Thytronic SME2-IS Bedienungsanleitung

SME2-IS - Manual - 06 - 2021

MANUAL

FAULT DETECTOR CONFORMING TO ENEL SPECIFICATION GSTP011 (PROTECTION AND CONTROL

DEVICE FOR MV SUBSTATION – RGDM CONTROL UNIT)

2SME2-IS - Manual - 06 - 2021

SUMMARYSUMMARY

1 PREFACE 5

Scope and responsibilities ............................................................................................................................................................................5

Application........................................................................................................................................................................................................5

Compliance.......................................................................................................................................................................................................5

Technical Support............................................................................................................................................................................................5

Copyright...........................................................................................................................................................................................................5

Warranty...........................................................................................................................................................................................................5

Safety instructions ..........................................................................................................................................................................................5

Isolation tests...................................................................................................................................................................................................5

Identification....................................................................................................................................................................................................5

Ambient conditions .........................................................................................................................................................................................6

Symbols.............................................................................................................................................................................................................6

Abbreviations/definitions...............................................................................................................................................................................6

2 GENERAL INFORMATION 10

Preface........................................................................................................................................................................................................... 10

Picture............................................................................................................................................................................................................ 10

Main Characteristics................................................................................................................................................................................... 10

3 TECHNICAL CHARACTERISTICS 11

3.1 GENERAL INFORMATION ................................................................................................................................................................................11

Protection and measuring relay .................................................................................................................................................................11

Mechanical characteristics........................................................................................................................................................................11

Immunity to voltage dips..............................................................................................................................................................................11

Electromagnetic compatibility (EMC) ........................................................................................................................................................11

Issue ................................................................................................................................................................................................................12

Mechanical tests...........................................................................................................................................................................................12

Climatic conditions........................................................................................................................................................................................12

Reference specifications.............................................................................................................................................................................12

Certifications................................................................................................................................................................................................. 13

3.2 INPUT CIRCUITS .............................................................................................................................................................................................. 13

Auxiliary circuit power

aux ....................................................................................................................................................................... 13

Combined active sensor input circuits..................................................................................................................................................... 13

Combined passive sensor input circuits .................................................................................................................................................. 13

Capacitive voltage divider input circuits.................................................................................................................................................. 13

Digital inputs ................................................................................................................................................................................................. 13

3.3 OUTPUT CIRCUITS........................................................................................................................................................................................... 13

Final relays .................................................................................................................................................................................................... 13

Current transformer..................................................................................................................................................................................... 13

3.4 MMI.....................................................................................................................................................................................................................14

3.5 COMMUNICATIONS CIRCUITS.......................................................................................................................................................................14

Local port........................................................................................................................................................................................................14

Remote connection.......................................................................................................................................................................................14

Connection to remote control peripheral..................................................................................................................................................14

3.6 BASIC PROGRAMMING ..................................................................................................................................................................................14

Nominal values..............................................................................................................................................................................................14

Cyclical input sequence...............................................................................................................................................................................14

Polarity ............................................................................................................................................................................................................14

Timers associated with the logical inputs.................................................................................................................................................15

Output relay timers........................................................................................................................................................................................15

3.7 PROTECTION FUNCTIONS..................................................................................................................................................................................15

Voltage present - RVL ...................................................................................................................................................................................15

Maximum active power directional - 32P .................................................................................................................................................15

Phase sequence control - 47.......................................................................................................................................................................15

Overcurrent - 50/51..................................................................................................................................................................................15

Residual overcurrent - 50N/51N .................................................................................................................................................................16

Ground directional overcurrent - 67N........................................................................................................................................................16

ALB frequency (automatic load balancer)................................................................................................................................................16

Second harmonic restraint - 2ndh-REST...................................................................................................................................................17

Averaged values............................................................................................................................................................................................17

THD monitoring ..............................................................................................................................................................................................17

Breaker diagnostics......................................................................................................................................................................................17

SME2-IS - Manual - 06- 2021

Automation functions................................................................................................................................................................................... 18

Hot Line Tag function................................................................................................................................................................................... 18

Automatic reclosing - 79 ............................................................................................................................................................................. 18

Synchrocheck relay - 25 ............................................................................................................................................................................. 18

3.8 MONITORING AND CONTROL FUNCTIONS................................................................................................................................................ 19

Oscillograph ................................................................................................................................................................................................. 19

3.9 MEASUREMENTS............................................................................................................................................................................................ 19

Measurements.............................................................................................................................................................................................. 19

Fault recording...............................................................................................................................................................................................21

Event recording.............................................................................................................................................................................................21

Measurement logging ..................................................................................................................................................................................21

GD measurement recording .......................................................................................................................................................................21

4 FUNCTIONAL CHARACTERISTICS 22

4.1 HARDWARE .......................................................................................................................................................................................................22

4.2 SOFTWARE........................................................................................................................................................................................................ 23

Basic software.............................................................................................................................................................................................. 23

Real-time operating system........................................................................................................................................................................ 23

Processes (task)........................................................................................................................................................................................... 23

Drivers............................................................................................................................................................................................................ 23

The application software ............................................................................................................................................................................ 23

Data Base...................................................................................................................................................................................................... 23

Self test (application)................................................................................................................................................................................... 23

4.3 CONFIGURATION AND CALIBRATION ..........................................................................................................................................................24

4.4 INPUTS/OUTPUTS ............................................................................................................................................................................................25

Measurement inputs.....................................................................................................................................................................................25

Measured signal processing.......................................................................................................................................................................26

Measurement conventions......................................................................................................................................................................... 29

LED signals.................................................................................................................................................................................................... 30

Communications interfaces........................................................................................................................................................................ 30

4.5 PROTECTION FUNCTIONS..................................................................................................................................................................................31

Type selection ................................................................................................................................................................................................31

4.6 PROTECTION FUNCTIONS..................................................................................................................................................................................31

Overcurrent - 50/51 .......................................................................................................................................................................................32

Residual overvoltage - 51N..........................................................................................................................................................................34

Ground directional overcurrent - 67N........................................................................................................................................................35

Directional detection of intermittent ground arcs...................................................................................................................................37

Maximum directional active power - 32P ................................................................................................................................................ 38

4.5 MONITORING AND CONTROL FUNCTIONS................................................................................................................................................ 40

ALB frequency (automatic load balancer) protection ........................................................................................................................... 40

Second harmonic restraint - 2ndh-REST...................................................................................................................................................42

Interface methods........................................................................................................................................................................................ 43

Automatic reclosing (79) ..............................................................................................................................................................................45

Synchrocheck - 25 ....................................................................................................................................................................................... 48

Automatic faulty branch selection function ............................................................................................................................................ 53

GD management function............................................................................................................................................................................55

Virtual I/O........................................................................................................................................................................................................56

5 MEASUREMENTS, LOGICAL STATES AND COUNTERS 59

Protection status.......................................................................................................................................................................................... 60

Timed inputs .................................................................................................................................................................................................. 60

Breaker monitoring...................................................................................................................................................................................... 60

Input function statuses.................................................................................................................................................................................61

Relays..............................................................................................................................................................................................................61

Counters..........................................................................................................................................................................................................61

Protection diagnostic status .......................................................................................................................................................................61

Selective block - BLOCKS............................................................................................................................................................................62

Virtual inputs ..................................................................................................................................................................................................62

Virtual outputs................................................................................................................................................................................................62

Fault logging - SFR ........................................................................................................................................................................................62

Event logging - SER...................................................................................................................................................................................... 63

4SME2-IS - Manual - 06 - 2021

DFR.................................................................................................................................................................................................................. 63

6 CYBER SECURITY 65

Configuration management ........................................................................................................................................................................65

Hardware systems and networking equipment ......................................................................................................................................65

Initial system configuration ........................................................................................................................................................................65

Threat and vulnerability management......................................................................................................................................................65

Access control..............................................................................................................................................................................................65

Authentication and authorization management......................................................................................................................................65

Auditing...........................................................................................................................................................................................................65

Network communication security..............................................................................................................................................................66

Cybersecurity application scheme.............................................................................................................................................................66

Access procedure.........................................................................................................................................................................................66

7 INSTALLATION 67

7.1 PACKAGING.......................................................................................................................................................................................................67

7.2 ASSEMBLY.........................................................................................................................................................................................................67

7.3 ELECTRICAL CONNECTIONS ......................................................................................................................................................................... 68

8 CALIBRATION AND START-UP 70

8.1 ThyVisor software............................................................................................................................................................................................ 70

Installing ThyVisor........................................................................................................................................................................................ 70

8.2 MMI (Man Machine Interface) ..................................................................................................................................................................... 70

Reading variables (READ)............................................................................................................................................................................71

Setting modifying (SET) ................................................................................................................................................................................71

Test...................................................................................................................................................................................................................72

Communication..............................................................................................................................................................................................72

CB open/close commands...........................................................................................................................................................................72

Enabling / locking the keyboard - Password........................................................................................................................................... 73

8.4 MAINTENANCE.................................................................................................................................................................................................75

8.5 REPAIRS .............................................................................................................................................................................................................75

8.6 STORAGE............................................................................................................................................................................................................75

9 APPENDIX 76

9.1 APPENDIX A - IEC time dependent curves .................................................................................................................................................76

General formula.............................................................................................................................................................................................76

First protection threshold 50/51 - IEC inverse time curves (type A, NIT).............................................................................................77

First protection threshold 50/51 - IEC very inverse time curves (type B, VIT).................................................................................... 78

First protection threshold 50/51 - IEC long inverse time curves (type LIT)......................................................................................... 79

First protection threshold 50/51 - IEC extremely inverse time curves (type C, VIT).......................................................................... 80

9.2 APPENDIX B - Insertion diagram...................................................................................................................................................................81

9.3 APPENDIX C - SME2-IS panel dimensions...................................................................................................................................................82

9.4 APPENDIX D - Revisions ................................................................................................................................................................................ 83

9.5 APPENDIX E - CE Declaration of Conformity ...............................................................................................................................................84

SME2-IS - Manual - 06- 2021

INTRODUCTION

1 PREFACE1 PREFACE

Scope and responsibilities

SME2-IS fault detectors are made in conformity with the ENEL GSTP011 specication (Protection

and control device for MV substation – RGDM control unit); please refer to this specication for a

full description.

This document describes the technical characteristics of the device, illustrates its operation and

gives installation, adjustment and commissioning instructions.

The content has been checked, but since we cannot exclude inaccuracies in the description, we are

not liable for errors and omissions.

The document is updated from time to time. Information about revisions is represented by the date

of publication.

We welcome any corrections and suggestions for improvement from users of the document.

Thytronic reserves the right to modify and improve the product without notifications.

Application

This document covers versions running application rmware 1.01

Compliance

The product is conforming with the following EC directives:

• EMC Directive: 2014/30/EC

• LV Directive: 2014/35/EC

Technical Support

Contacts: THYTRONIC Technical Service www.thytronic.it

the firmware and its related software be copied or modified.

Warranty

The product is covered by a one year warranty.

Safety instructions

Observe the instructions given in this document; in particular, pay special attention to the following

symbols:

Devices must be installed and commissioned by a qualied technician; Thytronic is not responsible

for any consequences of improper use or failure to observe the instructions given in this document.

In particular:

• Power the device off before working on its interior.

• Use proper instrumentation to check for voltage on all input/output terminals, with special attention

to all circuits powered externally (logical inputs, measurement inputs, etc.).

• Take care when handling metal parts (front panel, connectors).

Isolation tests

Dielectric rigidity and isolation resistance testing may generate hazardous voltages (charged capac-

itors, etc.): take care not to shut off power suddenly but gradually reduce it to zero.

Identiﬁcation

• Device identication screenprinted on the front panel.

• Test label bearing the date of testing, serial number and ID of test operator.

Failure to observe these instructions can result in serious injury or death!

Failure to observe these instructions can cause damage and personal injury!

The regulations made be made following a coordination study.

The values indicated in the example calculations are purely illustrative and are not intended to be

used for the actual application.

6SME2-IS - Manual - 06 - 2021 INTRODUCTION

Ambient conditions

The device must be used in the environmental conditions indicated in the technical specications.

Use in other conditions requires that the device be adapted appropriately prior to commissioning

(conditioning systems, humidity control, etc.).

Appropriate filters must be installed when the device is to be used in polluted conditions (dust, cor-

rosive substances, etc.).

Symbols

The manual employs the standard CEI/IEC and ANSI symbols when available:

for example: 51 = ANSI time overcurrent relay code

This manual uses the following typographical formats:

The headings of Thyvisor[1] menus are highlighted as shown:

Overcurrent - 50/51

The descriptions of parameters (measurements, thresholds, delays, etc.) and their values are high-

lighted as follows:

Threshold I>

Time-independent

I>def

MMI display messages are highlighted with the following font:

SPR10

Notes are highlighted with cursive script on a coloured background

Note: Note considered of value to the description

Abbreviations/deﬁnitions

En Nominal residual current of the relay

Enp Nominal residual CT primary current

nNominal phase current of the relay

np Nominal CT primary phase current

25 ANSI synchrocheck relay code

27-59 ANSI undervoltage/overvoltage relay code

32P ANSI directional power code

47 Phase sequence control

50/51 ANSI overcurrent relay code

50N/51N ANSI neutral overcurrent relay code

67 ANSI directional overcurrent relay code

67 ANSI neutral directional overcurrent code

79 ANSI auto reclose code

52 or CB Circuit breaker

52a Auxiliary contact, assignable to a digital input, used to determine the

circuit breaker position for diagnostics and in case of failure to open.

The state of the contact corresponds to the circuit breaker position

(52a open = CB open)

52b Auxiliary circuit breaker contact (see 52a). The state of the contact

is opposite to the circuit breaker position (52b open = CB closed)

DFR Digital Fault Recorder (oscilloscope)

SER Sequential Event Recorder

SFR Sequential Fault Recorder

ANSI American National Standards Institute

IEEE Institute of Electrical and Electronics Engineers

IEC International Electrotechnical Commission

FSL Automatic faulty branch selection function

BLIND temporary opening inhibition signals (IEC61850)

FSL1 BLIND wait always active

FSL2 BLIND wait for rst fault occurrence only

FRT Automatic faulty branch selection function (without BLIND)

K1...K5 Output relays

PULSE Output relay programmed with a pulse output

tTR Minimum hold time with output relays tripped

CT Current transformer

P1 IEC terminology indicating the polarity of the CT primary (as an alter-

native to the ANSI dot symbol)

P2 IEC terminology indicating the polarity of the CT primary (as an alter-

native to the terminal not marked with the ANSI dot symbol)

S1 IEC terminology indicating the polarity of the CT secondary (as an

alternative to the ANSI dot symbol)

Note 1 For the detailed description of the graphic interface and use of the Thyvisor software, refer to the respective chapter

SME2-IS - Manual - 06- 2021

INTRODUCTION

S2 IEC terminology indicating the polarity of the CT secondary (as an

alternative to the terminal not marked with the ANSI dot symbol)

Self test Self diagnostics

Start Start of a protective function (instantaneous)

Trip Initiation of a protective function (timed)

Operating time The start and tripping time are determined by varying the input value

instantaneously (stepwise) from a set standby value to a set tripping

value.

Reset time Time required for the relay to reset, in specied conditions following

a trip, so that the successive tripping time does not differ by more

than a set percentage from the previously measured time.The reset

time is determined by changing the tripping reference value to the

reset reference value.

Overshoot time The overshoot time is determined by changing the input value instan-

taneously from the standby value to the tripping value and returning

it, again instantaneously, to the standby value. The difference be-

tween the tripping time of the test device (determined as above) and

the minimum length of the pulse which trips it is the overshoot time.

Reset ratio The ratio between the release value and the value of the same pa-

rameter that operates the device, in specied conditions. The reset

ratio may be less than or greater that 1, depending on whether the

device is an over or under voltage/current relay.

Reset delay An intentional reset delay which can be set by the user.

MMI Man Machine Interface

SW Software

FW Firmware

Thyvisor The parameter reading and setting software

Log le A text le which logs the operations of a program (Thyvisor)

Upgrade Firmware update

XML EXtensible Markup Language

8SME2-IS - Manual - 06 - 2021 INTRODUCTION

Symbols.ai

Symbols

Internal logical signal (output); may be a logical state (e.g. U>> Start) or a numerical value

The variable is available in read (ThyVisor + communications interfaces)

External logical signal (input); may be a digital input command or an SW command

The variable is available in read (ThyVisor + communications interfaces)

Internal signal (e.g. state of the Breaker Failure signal relative to the second threshold of function 50)

The variable is not available in read (non-availability is indicated by the lack of an arrow)

AND and NAND logical ports

OR and NOR logical ports

Comparator block (e.g. tripping threshold U>>)

Calculation block (e.g. maximum phase current value)

Regulation (e.g. tripping threshold I>>)

The variable is available in read and can be set with ThyVisor + MMI

Commutator

Resettable timer with tripping delay

(tripping time tON)

Non-resettable timer with tripping delay

(tripping time tON)

Non-resettable timer with reset delay

(reset time tOFF)

Tripping characteristic (dependent/independent)

≥1

EXOR logical port

SME2-IS - Manual - 06- 2021

INTRODUCTION

Symbols1.ai

tOFF

Minimum tripping time for output relays (tTR)tTR

tTR

INPUT

OUTPUT

tTR

0 T

tTR

INPUT

OUTPUT

Latched operating mode of output relays and

LEDs

Pulse operating mode of output relays

INPUT

OUTPUT

Latched

tTR

RESET

Resettable timer with reset delay

(reset time tOFF)

RESET

INPUT

OUTPUT

tOFF

10 SME2-IS - Manual - 06 - 2021 GENERAL INFORMATION

2 GENERAL INFORMATION2 GENERAL INFORMATION

Preface

SME2-IS fault detectors are conforming with ENEL specication GSTP011 (Protection and control

device for MV substation – RGDM control unit); they are installed in remote controlled substations

to detect phase faults and ground faults on both isolated neutral grids and compensated neutral

grids, without the need for modication to handle switching between the two grid congurations and

independently of the power direction;

In particular:

• they detect multi-phase faults and single-phase ground faults,

• they detect line undervoltage,

• they measure the voltage and the active and reactive power of the MV line,

• the open and close the DY800 in response to faults or when remotely operated by UP,

• they interface with the generators on the MV grid to coordinate the regulation of the voltage along

the line and remote disconnection signals.

The input circuits are suited to acquire measurements with integrated phase current/voltage sen-

sors; the device is able, with SW selection, to acquire the current values from active sensors (signal

proportional to the current transduced by the sensor) or passive sensors (DJ 5400 and GSTC005 -

signal proportional to the value of the time derivative of the current), and can measure current and

voltage values with IEC 61869-10 and IEC 61869-11 low power sensors.

The homopolar values are calculated vectorially from the measured phase currents and voltages.

Voltage measurement inputs are available with capacitive voltage dividers.

Two Ethernet communications ports are available, of which one runs the IEC61850 protocol.

To ensure full compatibility with any RTUs already on the secondary systems, the SME2-IS device

is equipped with a dual interface to dialogue with both the UP (DX1215) and future communications

equipment.

The system can be calibrated, programmed and its logs and values read with a PC, or via the Ether-

net communications port using the freely available ThySetter software; all the above operations are

also available via the front panel keypad (MMI).

Picture

Main Characteristics

• Metal enclosure

• Backlit LCD display

• Ten indicator LEDs on the front panel, freely programmable

• RESET button for resetting the indicators

• Switch open/close buttons

• Hot Line Tag function button

• Switch for enabling/disabling auto-reclose

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