PCS 9705s x application manual EN overseas general x r1 00

⚫ Clock synchronization using IRIG-B, SNTP Simple Network Time Protocol, PPS Pulse-Per- Second and PPM Pulse-Per-Minute, IEEE1588 ⚫ Auxiliary functions for simple tests and commissioning

Copyright © 2019 NR All rights reserved

NR, the NR logo are either registered trademarks or trademarks of NR Electric Co., Ltd No NR trademarks may be used without written permission NR products appearing in this document may

be covered by P.R China and foreign patents NR Electric Co., Ltd reserves all rights and benefits afforded under P.R China and international copyright and patent laws in its products, including but not limited to software, firmware and documentation NR Engineering Co., Ltd is licensed to use this document as well as all intellectual property rights owned or held by NR Electric Co., Ltd, including but not limited to copyright, rights in inventions, patents, know-how, trade secrets, trademarks and trade names, service marks, design rights, database rights and rights in data, utility models, domain names and all similar rights

The information in this document is provided for informational use only and does not constitute a legal contract between NR and any person or entity unless otherwise specified Information in this document is subject to change without prior notice

To the extent required the products described herein meet applicable IEC and IEEE standards, but

no such assurance is given with respect to local codes and ordinances because they vary greatly Although every reasonable effort is made to present current and accurate information, this document does not purport to cover all details or variations in equipment nor provide for every possible contingency to be met in connection with installation, operation, or maintenance Should further information be desired or should particular problems arise which are not covered sufficiently for your purposes, please do not hesitate to contact us

Preface

About This Document

This manual describes the configuration scheme in multiple application scenarios for PCS-9705S Bay Control Unit, including how to connect the device to a computer and to configure functions, such as control, protection, measurement and supervision in using of configuration tool

To start using this manual for application configuration, user should know the basic operations of the configuration tool PCS-Studio

Safety Information

This manual is not a complete index of all safety measures required for operation of the equipment (module or device) However, it comprises important information that must be followed for personal safety, as well as to avoid material damage Information is highlighted and illustrated as follows according to the degree of danger:

Indicates an imminently hazardous situation that, if not avoided, will result

in death or serious injury

Indicates a potentially hazardous situation that, if not avoided, could result in death or serious injury

Indicates a potentially hazardous situation that, if not avoided, may result

in minor or moderate injury or equipment damage

Indicates that property damage can result if the measures specified are

not taken

Important information about the product, please pay attention to avoid undesired result

Instructions and Warnings

The following hazard statements apply to this device

Disconnect or de-energize all external connections BEFORE opening this

device Contact with hazardous voltages and currents inside this device can cause electrical shock resulting in injury or death

Contact with instrument terminals can cause electrical shock that can result

in injury or death

Use of this equipment in a manner other than specified in this manual can impair operator safety safeguards provided by this equipment

Have ONLY qualified personnel service this equipment If you are not

qualified to service this equipment, you can injure yourself or others, or cause equipment damage

This device is shipped with default passwords Default passwords should

be changed to private passwords at installation Failure to change each default password to a private password may allow unauthorized access NR shall not be responsible for any damage resulting from unauthorized access

DO NOT look into the fibre (laser) ports/connectors

DO NOT look into the end of an optical cable connected to an optical output

DO NOT perform any procedures or adjustments that this instruction

manual does not describe

During installation, maintenance, or testing of the optical ports, ONLY use the test equipment qualified for Class 1 laser products!

Incorporated components, such as LEDs, transceivers, and laser emitters,

are NOT user serviceable Return units to NR for repair or replacement

Equipment components are SENSITIVE to electrostatic discharge (ESD)

Undetectable permanent damage can result if you do not use proper ESD procedures Ground yourself, your work surface, and this equipment

BEFORE removing any cover from this equipment If your facility is not

equipped to work with these components, contact NR about returning this device and related NR equipment for service

Insufficiently rated insulation can deteriorate under abnormal operating conditions and cause equipment damage For external circuits, use wiring

of SUFFICIENTLY RATED insulation that will not break down under

abnormal operating conditions

SEVERE power and ground problems can occur on the communications

ports of this equipment as a result of using non-standard cables Please use the wiring method recommended in the manual for communication terminals

DO NOT connect power to the relay until you have completed these

procedures and receive instruction to apply power Equipment damage can result otherwise

Use of controls or adjustments, or performance of procedures other than

those specified herein, may RESULT IN hazardous radiation exposure

The firmware may be upgraded to add new features or enhance/modify

existing features, please MAKE SURE that the version of this manual is

compatible with the product in your hand

For example: the access path of protection settings is: Main Menu→Settings→Protection

Settings

⚫ Settings not in the table should be placed in brackets

For example: the system setting [Opt_SysFreq]

⚫ Cross-references are presented in italics

For example: refer to Figure 1.1-1, refer to Table 1.1-1, reference to Section 1.1

⚫ Binary input signals, binary output signals, analogues, LED lights, buttons, and other fixed meanings, should be written in double quotes and bold

For example: press the button "ENT"

Three-phase Corresponding Relationship

Ia, Ib, Ic, I0 IL1, IL2, IL3, IN IR, IY, IB, IN

Warranty

This product is covered by the standard NR 10-year warranty For warranty details, please

consult the manufacturer or agent for warranty information

Document Structure

This manual is a comprehensive work covering all aspects of device application and configuration Read the sections that pertain to your application to gain valuable information about configuring the device To concentrate on the target sections of this manual as your job needs and responsibilities dictate An overview of each manual section and section topics follows

1 Functions and Applications

Introduction of device functions and typical application scenarios

Basic functions configuration methods, including functions selection through MOT, diagram drawing

of LCD display, communication protocol selection and setting, user authority management, configuration of binary inputs and outputs, programmable logic, etc

Appendix A Glossary

List of abbreviations adopted in this manual

Document Revision History

P/N: ZL_PCS-9705S_X_Application Manual_EN_Overseas General_X

1.2 Typical Application Scenarios 1-5

1.2.1 Single Circuit Breaker (with Single Busbar, App1) 1-5

1.2.2 Single Circuit Breaker (with Double Busbars, App1) 1-7

1.2.3 Double Circuit Breakers (App2) 1-8

1.2.4 Multiple Busbars (App3) 1-9

1.2.5 Bus Coupler (App3) 1-10

1.2.6 Transformer Sides (App4) 1-11

1.2.7 Multiple Bays of One Busbar (App5) 1-12

1.2.8 I/O Box (App7) 1-13

1

1

1.1 Functions

1.1.1 Basic Functions

⚫ Multiple setting groups

⚫ Flexibly configurable binary inputs (max 361)

⚫ Flexibly configurable binary outputs (max 107)

⚫ Configuration of max.40 users and allow each user to own different password and access

authority

⚫ Function shortcuts key, which can be configured by software tool to execute express

operations

⚫ Clock synchronization using IRIG-B, SNTP (Simple Network Time Protocol), PPS (Pulse-Per-

Second) and PPM (Pulse-Per-Minute), IEEE1588

⚫ Auxiliary functions for simple tests and commissioning

1.1.2 Control Functions

⚫ Switchgear control

⚫ Double point status synthesis

⚫ Remote/Local control mode switch

⚫ Interlocking logic for control

⚫ Direct control

⚫ Closing synchronism check with voltage selection

⚫ Switchgear tripping counter

⚫ Tap position indication and control

1.1.3 Protection Functions

⚫ Breaker failure protection

➢ Phase-segregated re-trip and three-phase re-trip

➢ Optional current criterion (phase overcurrent element, zero-sequence overcurrent

element, negative-sequence overcurrent element)

➢ Optional circuit breaker position check logic

➢ Two time delay settings

1 ⚫ Transfer trip protection

➢ Three-phase or phase-segregated

⚫ Automatic reclosing

➢ One shot or multi-shot reclosing

➢ 1-pole AR, 3-pole AR or 1/3-pole AR

➢ Optional trigger mode, by protection operating and external binary input

➢ Support of synchronism check logic and voltage check logic

1.1.4 Measurement and Metering

⚫ U, I, P, Q, Cos

⚫ Positive, negative and zero sequences

⚫ Max.15th harmonics

⚫ Energy metering (active and reactive energies for import and export)

⚫ Power Quality Supervision (PQS) with Total Harmonic Distortion (THD), deviation and unbalance

⚫ DC analogue inputs (0~±20mA or 0~±10V)

⚫ DC analogue outputs (4~20mA, 0~10V, 0~5V or 0~20mA)

1.1.5 Synchrophasor Measurement

⚫ The integrated phasor Measurement Unit (PMU) function of synchrophasor measurement is compatible with IEEE C37.118-2005, IEEE C37.118.1-2011, IEEE C37.118.2-2011 and IEEE C37.118.1a-2014

⚫ Supporting time synchronization by IRIG-B signal

⚫ Supporting P Class or M Class measurement (user selectable)

⚫ Measurement of three-phase and single-phase voltage and current

⚫ Measurement of positive/negative/zero-sequence voltage and current

⚫ Calculation of active power, reactive power, system frequency, and rate-of-change of frequency (ROCOF)

⚫ Measurement of up to 32 binary status (user configurable)

⚫ Output of synchrophasor with timestamp, support of multiple protocols (TCP, TCP-UDP, UDP) and multiple data rates (2f0, f0, f0/2) for maximum 4 clients (PDC)

1

1.1.6 Monitoring

⚫ CT circuit failure Supervision (CTS)

⚫ VT circuit failure Supervision (VTS)

⚫ Self-diagnostic

⚫ Powerful faults recording (max buffer for 10,000 sampled points at 4.8 or 9.6 kHz)

⚫ Event recorder including 1024 change-of-state events, 1024 supervision events, 256 control

logs and 1024 device logs

⚫ Disturbance recorder including 32 disturbance records with waveforms (format compatible with

➢ IEC 61850 Ed1 & Ed2

➢ IEC 62439 Parallel Redundancy Protocol (PRP)

➢ IEC 62439 High-availability Seamless Ring (HSR) Redundancy Protocol

➢ IEEE 802.1w Rapid Spanning Tree Protocol (RSTP)

⚫ Support for digital substation

➢ Extendable quantity of communication interfaces

➢ Support of IEC 61850 MMS Server

➢ Support of IEC 61850-8-1 GOOSE

➢ Support of IEC 61850-9-2LE SMV

⚫ Up to four 10Base-T/100Base-TX copper Ethernet ports

⚫ Up to four 100Base-FX optical Ethernet ports

⚫ Two RS-485 serial ports for communication or printer

⚫ One RS-485/TTL serial port for clock synchronization

⚫ RJ45 debugging ports for both front and rear sides

⚫ 4 Programmable operator pushbuttons with user-configurable labels

⚫ Up to 15/18 programmable target LEDs with user-configurable labels

⚫ 1 RS-485 rear ports for printer

⚫ Language switchover: English+ selected language

⚫ Configuration tool: PCS-Studio

1.1.9 Additional functions

⚫ User programmable logic

⚫ System phase sequences rotation function (ABC or ACB)

⚫ Clock synchronization

➢ IRIG-B: IRIG-B via RS-485 differential level or TTL level

➢ PPS: Pulse per second (PPS) via RS-485 differential level or binary input

➢ PPM: Pulse per minute (PPM) via RS-485 differential level or binary input

➢ IEEE1588: Clock message based on IEEE1588 via optical fibre interface

➢ SNTP (PTP): Unicast (point-to-point) SNTP mode via Ethernet network

➢ SNTP (BC): Broadcast SNTP mode via Ethernet network

➢ Message (IEC103/Modbus/DNP3.0): Clock messages through IEC103 protocol, Modbus protocol and DNP3.0 protocol

App4 Transformer sides App5 Bays

App7 I/O box

1.2.1 Single Circuit Breaker (with Single Busbar, App1)

In this scenario, the PCS-9705S is applied to a single circuit breaker with a single busbar The

three-phase CT and VT are adopted for measurement and protection of the line CB The

single-phase VT is connected to the busbar for synchronism check An optional single-single-phase CT may be

adopted for the residual current of line CB

The circuit breaker and the relevant disconnector switches and earthing switches in this bay could

be controlled by the device Breaker failure protection and auto-reclosing function are optional to

be adopted as the backup of line protection Meanwhile, supervision functions of analog input

channels, binary input channels, CT secondary circuits, VT secondary circuits, switchgear tripping

counter, etc are equipped for the operating reliability and safety of the device Moreover, phasor

measurement unit (PMU) function for synchrophasor measurement may be integrated

FR CTS

VTS 25

CILO XSWI

79

1

1.2.2 Single Circuit Breaker (with Double Busbars, App1)

In this scenario, the PCS-9705S is applied to a single circuit breaker with double busbars The

three-phase CT and VT are adopted for measurement and protection of the line CB Two

single-phase VTs are connected to the two busbars respectively for synchronism check An optional

single-phase CT may be adopted for the residual current of line CB

The circuit breaker and the relevant disconnector switches and earthing switches in this bay could

be controlled by the device Breaker failure protection and auto-reclosing function are optional to

be adopted as the backup of line protection Meanwhile, supervision functions of analog input

channels, binary input channels, CT secondary circuits, VT secondary circuits, switchgear tripping

counter, etc are equipped for the operating reliability and safety of the device Moreover, phasor

measurement unit (PMU) function for synchrophasor measurement may be integrated

VTS 25

CILO XSWI

79

1 1.2.3 Double Circuit Breakers (App2)

In this scenario, the PCS-9705S is applied to the tie CB and one bus CB in 3/2 CB arrangement Two three-phase CTs are adopted for measurement of the tie CB and one bus CB A three-phase

VT is adopted between the tie CB and one bus CB for measurement of the outgoing line Three single-phase VTs are connected to the two busbars and the other outgoing line respectively for synchronism check

The three circuit breakers and the relevant disconnector switches and earthing switches in this arrangement could be controlled by the device Meanwhile, supervision functions of analog input channels, binary input channels, CT secondary circuits, VT secondary circuits, switchgear tripping counter, etc are equipped for the operating reliability and safety of the device

CSWI

FR

Busbar1

1VT 3CTs

CTS VTS 25

CILO

*

XSWI XCBR

52

84 PQS

52 3VTs

Bus1 CB

Bus2 CB

1

1.2.4 Multiple Busbars (App3)

In this scenario, the PCS-9705S is applied to up to 4 busbars A three-phase VT is adopted for

measurement of each busbar

The relevant disconnector switches and earthing switches of busbars and outgoing lines could be

controlled by the device Meanwhile, supervision functions of analog input channels, binary input

channels, VT secondary circuits, switchgear tripping counter, etc are equipped for the operating

reliability and safety of the device

1 1.2.5 Bus Coupler (App3)

In this scenario, the PCS-9705S is applied to a bus coupler between two busbars The three-phase

CT is adopted for measurement of the bus coupler Two three-phase VTs are adopted for measurement of the two busbars respectively

The bus coupler and the relevant bus disconnector switches and earthing switches in this bay could

be controlled by the device Meanwhile, supervision functions of analog input channels, binary input channels, CT secondary circuits, VT secondary circuits, switchgear tripping counter, etc are equipped for the operating reliability and safety of the device

FR VTS

1

1.2.6 Transformer Sides (App4)

In this scenario, the PCS-9705S is applied to up to 4 sides of a transformer A three phase CT is

adopted for measurement between the busbar and the transformer of each side A three-phase VT

is adopted for measurement of each side

The circuit breakers and relevant disconnector switches and earthing switches could be controlled

by the device Meanwhile, supervision functions of analog input channels, binary input channels,

CT secondary circuits, VT secondary circuits, switchgear tripping counter, etc are equipped for the

operating reliability and safety of the device

CSWI

FR

3VTs 3CTs

1 1.2.7 Multiple Bays of One Busbar (App5)

In this scenario, the PCS-9705S is applied to up to 6 bays with one busbar A three-phase CT and

a single-phase VT are adopted for measurement of each bay A three-phase VT is connected to the busbar An optional single-phase CT may be adopted for the residual current of each bay The circuit breaker and the relevant disconnector switches and earthing switches in each bay could

be controlled by the device Meanwhile, supervision functions of analog input channels, binary input channels, CT secondary circuits, VT secondary circuits, switchgear tripping counter, etc are equipped for the operating reliability and safety of the device

CSWI

FR CTS

VTS 25

CILO XSWI

1VTs

1CT 3CTs *

* 52

.

1

1.2.8 I/O Box (App7)

In this scenario, the PCS-9705S is applied for binary or DC analogue input and output signals

There is no adoption of instrument transformer for any AC analogue sampling input Besides the

CPU and PWR modules, all the slots could be equipped with I/O modules for binary input, binary

output, DC analogue input and DC analogue output signals

For the maximum capacity, this device supports 361 binary inputs, 107 binary outputs, 72 DC

analogue inputs or 48 DC analogue outputs at a time

1

2

2 Configuration Tool

Table of Contents

2.1 Brief Introduction of PCS-Studio 2-1

2.2 Connection to Debugging Computer 2-1

2.2.1 Via Front RJ45 Port 2-1

2.2.2 Via Ethernet Interface on CPU Module 2-2

2.3 Validation of Configuration 2-2

2

2

2.1 Brief Introduction of PCS-Studio

The PCS-Studio is the configuration and debugging software of PCS S series devices It provides

the following configuration functions:

⚫ Device information configuration

Viewing and editing project name, user configuration file version, file modification time, etc

⚫ Global function configuration

MOT selection, system configuration, function object activation/deactivation, etc

⚫ Human-machine interface configuration

Single Line Diagram (SLD) drawing for LCD display, definition of LED indicators, shortcut keys,

user-level waveform recording, etc

⚫ Communication configuration

Support of multiple communication protocols, including IEC 61850 (Edition 1 & Edition 2), IEC

60870-5-103, DNP3.0, Modbus, etc

⚫ IO signal configuration

Binary inputs, binary outputs, AC and DC analogue inputs, etc

⚫ User-defined logic programming

Complete and rich symbol library for user-defined logic programming

⚫ Parameter setting

Setting, import and export of device parameters

⚫ Online debugging

Debugging through visual pages and virtual LCD screen

2.2 Connection to Debugging Computer

On the front panel of the device, there is a multiplex RJ45 port which is the debugging port for

connection to a portable computer Meanwhile, the CPU plug-in module is equipped with several

Ethernet interfaces which may also be used to communicate with debugging computer

2.2.1 Via Front RJ45 Port

By default, the IP address of front debugging port is “100.100.100.100” with the subnet mask

“255.255.255.000” If this address conflicts with any other Ethernet port on CPU module Through

the device front human-machine interface, please call up the modification menu by pressing the

key combination "◄ ＋ ◄ － ENT" under the default LCD display screen and change the default

2

address

2.2.2 Via Ethernet Interface on CPU Module

Firstly, a connection between the device and the computer must be established by setting the IP address and subnet mask of the corresponding interfaces Configure the IP address and the subnet

mask of corresponding Ethernet interface through MainMenu → Settings → Global Settings →

Comm Settings → General Comm Settings

The IP addresses and the subnet masks of device PC should be in the same network segment Take the second Ethernet interface (LAN2) on CPU module as an example:

Device Debugging PC

IP address [IP_LAN2] = 198.87.96.XXX 198.87.96.102

Subnet mask [Mask_LAN2] = 255.255.255.0 255.255.255.0

LAN enabling setting [En_LAN2] = Enabled

“XXX” can be any value from 0 to 255 except 102

2.3 Validation of Configuration

To take effect of all kinds of offline configuration work through PCS-Studio, it is necessary to regenerate the device configuration file (*.devs) and download it to the device A reboot of device

is obligatory after the download for the validation of any modification

All function configuration described in the following chapters are offline tasks, which requires the “file generation, file downloading and device reboot” process for validation

3.3 Breaker Failure Protection (50BF) 3-2

3.3.1 Selection and Enabling 3-2

3.3.2 Input and Output Signals 3-2

3.3.3 Breaker Failure Initiation 3-3

3.4 Transfer Trip (TT) 3-4

3.4.1 Selection and Enabling 3-4

3.4.2 Input and Output Signals 3-4

3.4.3 Receiving of Transfer Trip Command 3-5

3.5 Trip Logic (TRP) 3-6

3.5.1 Selection and Enabling 3-6

3.5.2 Input and Output Signals 3-6

3.5.3 Output of Protective Operation 3-6

3.5.4 Enforcing of Three-phase Tripping 3-7

3.6 Automatic Reclosing (79) 3-7

3.6.1 Selection and Enabling 3-7

3.6.2 Input and Output Signals 3-7

3.6.3 Synchronism Check 3-10

3.6.4 Reclosing Mode 3-10

3.6.5 Initiation 3-11

3.6.6 Blocking 3-11

3.6.7 Power Line Communication Lost 3-12

3.6.8 Cooperation with Another AR 3-12

3.6.9 Circuit Breaker Energy 3-13

3.6.10 Pause of AR Procedure 3-14

3

3

3.1 Selection of Protective Function

In the PCS-9705S Bay Control Unit, certain protective functions are available in two application

scenarios: Single Circuit Breaker (App1) and Double Circuit Breakers (App2) For such scenarios,

the integrated protective functions serve as backup protection to complete the protection scheme

of the protected object with other protective device If a protective function has not been selected,

its related settings, signals and menu are hidden from both the LCD screen of device and the menu

and libraries of configuration tool

To select a protective function:

⚫ Firstly, make sure that the option "Single circuit breaker" or "Double circuit breakers" has

been selected through the path: Project Node → IED Node → Device Setup → Global

Config → MOT → U1 Application in the PCS-Studio configuration tool

⚫ Select the option "Basic + Backup protection" in the "S1 Software" field

⚫ Locate the protective function through the path: Project Node → IED Node → Device Setup

→ Global Config → Function Group and double click the "Option" column to select the

option "ON" or "OFF"

3.2 Enabling/Blocking of Function

If a function is selected or activated manually or by factory predefinition, it is enabled by default

Every function provides an input terminal of enabling and another input terminal of blocking Locate

these two terminals "XXXX.Enable" and "XXXX.Block" through the path: Variable DB →

Destination → Function_Logic → Page: Function Name → Component: XXXX in the

PCS-Studio configuration tool To establish the function enabling/blocking logic, user may connect these

two terminals to binary signal(s), such as binary input from contact (refer to the Section Binary

Inputs), result of logic calculation (refer to the Section User-programmable Logic) or function link

for local/remote control (refer to the Section Function Links)

3

3.3 Breaker Failure Protection (50BF)

3.3.1 Selection and Enabling

If this function is selected (refer to the Section Selection of Protective Function) and enabled (refer

to the Section Enabling/Blocking of Function), the related settings, signals and menu should be

displayed in the PCS-Studio configuration tool

3.3.2 Input and Output Signals

Breaker failure protection adopts phase current, zero sequence current and negative sequence current in operating criteria Therefore, the three-phase current analog input must be configured

correctly (refer to the Section AC Analog Inputs)

The available input and output terminals in PCS-Studio configuration tool are listed below:

Input terminals: Variable DB → Destination → Function_Logic → Page: BF_Protection →

Component: CB*.50BF

CB*.50BF.Enable Input signal of enabling breaker failure protection

CB*.50BF.Block Input signal of blocking breaker failure protection

CB*.50BF.ExtTrpA Input signal of initiating breaker failure protection (phase-A)

CB*.50BF.ExtTrpB Input signal of initiating breaker failure protection (phase-B)

CB*.50BF.ExtTrpC Input signal of initiating breaker failure protection (phase-C)

CB*.50BF.ExtTrp3P Input signal of initiating breaker failure protection (three-phase)

CB*.50BF.ExtTrp_WOI Input signal of initiating breaker failure protection with the position check of the circuit breaker CB*.50BF.52b Input signal of three-phase open position of three circuit breaker

Output terminals: Variable DB → Source → Function_Logic → Page: BF_Protection →

Component: CB*.50BF.

CB*.50BF.Op_ReTrpA Breaker failure protection operates to re-trip phase-A circuit breaker

CB*.50BF.Op_ReTrpB Breaker failure protection operates to re-trip phase-B circuit breaker

CB*.50BF.Op_ReTrpC Breaker failure protection operates to re-trip phase-C circuit breaker

CB*.50BF.Op_ReTrp3P Breaker failure protection operates to re-trip three-phase circuit breaker

CB*.50BF.Op_t1 Breaker failure protection operates with the time delay [50BF.t1_Op]

CB*.50BF.Op_t2 Breaker failure protection operates with the time delay [50BF.t2_Op]

3

CB*.50BF.On Breaker failure protection is enabled

CB*.50BF.Blocked Breaker failure protection is blocked

CB*.50BF.Valid Breaker failure protection is valid

CB*.50BF.StA Breaker failure protection starts (phase-A)

CB*.50BF.StB Breaker failure protection starts (phase-B)

CB*.50BF.StC Breaker failure protection starts (phase-C)

CB*.50BF.St Breaker failure protection starts (three-phase)

CB*.50BF.Alm_Init The initiating signal of breaker failure protection is abnormal

3.3.3 Breaker Failure Initiation

Normally, the configuration of Breaker Failure Initiation (BFI) logic via internal protection logic has

been pre-defined as the factory default configuration If BFI by external tripping signal is required,

the corresponding configuration should be made

⚫ Open or create a configuration page under the path: Project Node → IED Node → Program →

Function_Logic → in the PCS-Studio configuration tool

⚫ Locate the input terminal(s) of such function in: Variable DB → Destination →

Function_Logic → Page: BF_Protection → Component: CB*.50BF

➢ "CB*.50BF.ExTrpA", "CB*.50BF.ExTrpB" and "CB*.50BF.ExTrpC" for phase-segregated

BFI

Connect the terminals to phase-segregated tripping outputs from another protective

device (e.g line protection) in the configuration page;

➢ "CB*.50BF.ExTrp3P" for three-phase BFI

Connect the terminal to three-phase tripping output from another protective device (e.g

busbar protection);

➢ "CB*.50BF.ExTrp_WOI" for single-phase BFI

Connect the terminal to the corresponding phase tripping output from another protective

device in the configuration page

3

For the operation of certain protection function, such as overvoltage protection, the fault current maybe too small to initiate breaker failure protection To make sure that breaker failure protection can reliably operate, the

"CB*.50BF.ExTrp_WOI" terminal, which stands for "without current" criteria is

equipped for BFI Once this input terminal is energized, the status of normally closed auxiliary contact of circuit breaker is selected in addition in current check

to initiate breaker failure timer

⚫ Locate the output terminal(s) of protection in: Variable DB → Source → Function_Logic →

Page: BF_Protection → Component: CB*.50BF Connect the terminal(s) to the input(s) of

another function if necessary

3.4 Transfer Trip (TT)

3.4.1 Selection and Enabling

If this function is selected (refer to the Section Selection of Protective Function) and enabled (refer

to the Section Enabling/Blocking of Function), the related settings, signals and menu should be

displayed in the PCS-Studio configuration tool

3.4.2 Input and Output Signals

The available input and output terminals in PCS-Studio configuration tool are listed below:

Input terminals: Variable DB → Destination → Function_Logic → Page: DTT_Protection →

Component: TT

TT.Enable Input signal of enabling transfer trip

TT.Block Input signal of blocking transfer trip

TT.Init_3P Input signal of initiating transfer trip (Three phase)

TT.Init_A Input signal of initiating transfer trip (Phase A)

TT.Init_B Input signal of initiating transfer trip (Phase B)

TT.Init_C Input signal of initiating transfer trip (Phase C)

Output terminals: Variable DB → Source → Function_Logic → Page: DTT_Protection →

Component: TT.

3

TT.On Transfer trip is enabled

TT.Blocked Transfer trip is blocked

TT.Valid Transfer trip is valid

TT.Op_3P Transfer trip operates (Three phase)

TT.Op_A Transfer trip operates (Phase A)

TT.Op_B Transfer trip operates (Phase B)

TT.Op_C Transfer trip operates (Phase C)

TT.Alm The initiating signal of transfer trip is abnormal

3.4.3 Receiving of Transfer Trip Command

The device can trip circuit breaker by receiving the transfer trip signal via contact of binary input or

GOOSE communication protocol from another device The configuration method is:

⚫ Make sure that the corresponding binary signals have been correctly configured as binary

inputs (refer to the Section Binary Inputs) or GOOSE receiving signals (refer to the Section

GOOSE Communication)

⚫ Open or create a configuration page under the path: Project Node → IED Node → Program →

Function_Logic → in the PCS-Studio configuration tool

⚫ Locate the input terminal(s) of such function in: Variable DB → Destination →

Function_Logic → Page: DTT_Protection → Component: TT

➢ "TT.Init_A", " TT.Init_B" and " TT.Init_C" for phase-segregated tripping

In the configuration page, connect the terminals to the corresponding binary input signals,

which locate in the path: Variable DB → Source → Function_Logic → BI or Page:

UserPage_GOOSE → …;

➢ "TT.Init_3P" for three-phase tripping

In the configuration page, connect the terminal to the corresponding binary input signal,

which locates in the path: Variable DB → Source → Function_Logic → BI or Page:

UserPage_GOOSE → …;

3

3.5 Trip Logic (TRP)

3.5.1 Selection and Enabling

If this function is enabled (refer to the Section Enabling/Blocking of Function), the related settings,

signals and menu should be displayed in the PCS-Studio configuration tool

3.5.2 Input and Output Signals

The available input and output terminals in PCS-Studio configuration tool are listed below:

Input terminals: Variable DB → Destination → Function_Logic → Page: CB_TripOut →

Component: CB*.

CB*.Enable Input signal of enabling trip logic of circuit breaker

CB*.Block Input signal of blocking trip logic of circuit breaker

CB*.PrepTrp3P Input signal of three-phase tripping permission

Output terminals: Variable DB → Source → Function_Logic → Page: CB_TripOut →

Component: CB*.

CB*.TRP.On Tripping logic of circuit breaker is enabled

CB*.TrpA Tripping phase A of circuit breaker

CB*.TrpB Tripping phase B of circuit breaker

CB*.TrpC Tripping phase C of circuit breaker

CB*.Trp Tripping any phase of circuit breaker

CB*.Trp3P Tripping three phases of circuit breaker

CB*.BFI_A Protection tripping signal of phase A configured to initiate BFP, BFI signal shall be reset immediately after tripping signal drops off

CB*.BFI_B Protection tripping signal of phase B configured to initiate BFP, BFI signal shall be reset immediately after tripping signal drops off

CB*.BFI_ C Protection tripping signal of phase C configured to initiate BFP, BFI signal shall be reset immediately after tripping signal drops off

CB*.BFI Protection tripping signal configured to initiate BFP, BFI signal shall be reset immediately after tripping signal drops off

3.5.3 Output of Protective Operation

This function may block/unblock the circuit breaker tripping output which is issued by protective functions