GWPR-RI Reactor Integrated Differential Protection Relay

GWPR-RI Reactor Integrated Differential Protection Relay – Left View

GWPR-RI Reactor Integrated Differential Protection Relay – Right View

GWPR-SRI Reactor Integrated Differential Protection Relay

Functions(ANSI) 87R 50/50N 51/51N 46 59 27 49

Product Desc

GWPR-SRI Reactor Integrated Differential Protection Relay (Brand: GoWatron) is suitable for reactor protection and measurement & control at voltage levels of 132 kV, 66 kV, 33 kV, and 11 kV. It uses a 32-bit high-performance microcontroller integrating DSP and FPU, providing comprehensive protection, measurement, control, communication, and time synchronisation functions. The GWPR-SRI Reactor Integrated Differential Protection Relay features flexible hardware configuration and high immunity to electromagnetic interference, meeting the diverse requirements of power systems for reactor protection.

Communication Interfaces: 2 Ethernet ports, 2 RS-485 ports (the second RS-485 port is multiplexed with the time synchronisation port; communication and time synchronisation are selected via configuration)
Communication Protocols: IEC 60870-5-104, IEC 60870-5-103, IEC 61850 (optional)
Time Synchronisation Methods: Communication message-based time synchronisation, SNTP time synchronisation, and IRIG-B time synchronisation

Request Quote

+8617621210051

+86-17621210051

Accuracy

≤ 0.2%

Quick Response

≤ 100ms

Reliable Protection

Comprehensive Protection

Quality Assurance

ISO 9001 Certified

Technical Support

24/7 Expert Support

Fast Delivery

Global Shipping

Warranty

2-Year Warranty

1. Product Introduction

The GWPR-SRI Reactor Integrated Differential Protection Relay is a reactor integrated differential protection relay developed by GoWatron, suitable for reactor protection and measurement & control at voltage levels of 132 kV, 66 kV, 33 kV, and 11 kV. The GWPR-SRI Reactor Integrated Differential Protection Relay adopts a full-panel, fully enclosed chassis with isolation between power/control circuits and low-level signal circuits, and corresponding anti-interference measures are taken in both software and hardware design, meeting relevant electromagnetic compatibility standards. The GWPR-SRI Reactor Integrated Differential Protection Relay provides complete protection functions, with each protection element designed in a modular manner, mutually independent and flexibly configurable, featuring a user-friendly human-machine interface and convenient on-site testing functions.
The GWPR-SRI Reactor Integrated Differential Protection Relay supports 21 active binary inputs, 11 protection outputs, 2 signal outputs, and 1 device power-loss output. It is equipped with dual Ethernet interfaces, RS-485 serial communication interfaces, and an IRIG-B time synchronisation interface. The GWPR-SRI Reactor Integrated Differential Protection Relay uses independent 16-bit analogue-to-digital conversion for high-precision sampling, combined with an algorithm for filtering anomalous samples to improve the anti-interference capability of AC signal acquisition. It also features fault recording, event logging, and communication with the supervisory system, facilitating on-site commissioning, operation, and maintenance.

2. Product Functions

Differential Protection

(ANSI 87R) Instantaneous Differential Protection (Trip) — Fast differential protection for internal reactor faults
(ANSI 87R) Percentage-Restrained Differential Protection (Trip) — Percentage restrained differential protection
CT Circuit Supervision (Immediate indication with a time-delayed alarm) — CT secondary circuit abnormality supervision
Differential Current High Alarm — Differential current over-limit supervision

Overcurrent Protection

(ANSI 50/51) Three-stage Definite-Time Overcurrent Protection (Trip, with configurable directional and composite voltage supervision) — Definite-time overcurrent protection; when directional supervision is enabled, the protection operates as directional overcurrent protection (ANSI 67)
(ANSI 51) Inverse-Time Overcurrent Protection (Trip, selectable among standard inverse, very inverse, and extremely inverse, with configurable directional and composite voltage supervision) — Inverse-time overcurrent protection; when directional supervision is enabled, the protection operates as directional overcurrent protection (ANSI 67)
(ANSI 49) Overload Protection (Alarm/Trip selectable) — Reactor overload supervision and protection
(ANSI 46) Negative-Sequence Overcurrent Stage I (Trip) — Negative-sequence current/phase current unbalance protection
(ANSI 46) Negative-Sequence Overcurrent Stage II (Alarm/Trip selectable)
(ANSI 50N/51N) Zero-Sequence Overcurrent Stages I & II (Trip) — Zero-sequence definite-time overcurrent protection
(ANSI 50N/51N) Zero-Sequence Overcurrent Stage III (Alarm/Trip selectable)
(ANSI 51N) Zero-Sequence Inverse-Time Overcurrent Protection (Trip)
(ANSI 50/51) Neutral-End Overcurrent Stages I & II (Trip, with configurable composite voltage supervision) — Definite-time overcurrent protection for reactor neutral-end current

Voltage Protection

(ANSI 59) Overvoltage Protection (Trip) — Overvoltage protection
(ANSI 27) Undervoltage Protection (Trip) — Undervoltage protection
System Power Loss Protection (Alarm/Trip selectable) — Identifies system power-loss status based on specified voltage, current, and status criteria
PT Circuit Supervision (Alarm) — Voltage transformer secondary circuit abnormality supervision

Other Protection

Control Circuit Disconnection Supervision (Alarm) — Circuit breaker control circuit abnormality supervision
6 Channels of Non-Electrical Protection (Alarm/Trip selectable) — Receives contact signals from reactor body protection

Measurement and Control Functions

AC Signals: Voltages Ua, Ub, Uc, Uab, Ubc, Uca; Currents Ia, Ib, Ic, ia1, ib1, ic1, ia2, ib2, ic2, i30
Power: P, Q, COSΦ
Energy: EP+, EP-, EQ+, EQ-
Supports 21 active binary inputs (AC/DC 220 V, DC 100 V, or DC 48 V; please specify when ordering)
Supports 11 protection outputs, 2 signal outputs, and 1 device power-loss output

3. Product Application Scenarios

The GWPR-SRI Reactor Integrated Differential Protection Relay is suitable for the following scenarios:
Reactor protection and measurement & control at voltage levels of 132 kV, 66 kV, 33 kV, and 11 kV
Reactor protection in substations, power plants, industrial and mining enterprises, and other power systems
Applications requiring multiple protection functions such as differential protection, overcurrent protection, zero-sequence protection, and overvoltage/undervoltage protection
Power automation systems requiring integrated measurement & control, communication networking, and time synchronisation
Smart substations requiring flexible protection function configuration and support for IEC 60870-5-104, IEC 60870-5-103, and IEC 61850 (optional) communication protocols
Applications requiring real-time monitoring, fault recording, and event logging of reactor operating status
Operation and maintenance scenarios requiring on-site commissioning, local testing, and report printing

Frequently Asked Questions (FAQ)

Q:What voltage levels is the GWPR-SRI Reactor Integrated Differential Protection Relay suitable for?

The GWPR-SRI Reactor Integrated Differential Protection Relay is suitable for reactor protection and measurement & control at voltage levels of 132 kV, 66 kV, 33 kV, and 11 kV, covering the reactor protection requirements of medium and high voltage power systems.

Q:What differential protection functions does the GWPR-SRIReactor Integrated Differential Protection Relay provide, and how does second-harmonic blocking work?

The GWPR-SRI Reactor Integrated Differential Protection Relay provides instantaneous differential protection, percentage-restrained differential protection, CT circuit supervision, and a differential current high alarm. When the second-harmonic-to-fundamental ratio exceeds the configured threshold, the percentage-restrained differential element is blocked. The relay also detects open circuits in CT secondary circuits.

Q:What communication protocols, communication interfaces, and time synchronisation methods does the GWPR-SRI Reactor Integrated Differential Protection Relay support?

The GWPR-SRIReactor Integrated Differential Protection Relay supports IEC 60870-5-104, IEC 60870-5-103, and IEC 61850 (optional). It is equipped with 2 Ethernet ports and 2 RS-485 ports (the second RS-485 port is multiplexed with the time synchronisation port; communication and time synchronisation are selected via configuration). It supports communication message-based time synchronisation, SNTP time synchronisation, and IRIG-B time synchronisation, with time synchronisation accuracy of ≤ 2 ms.

Q:How many binary inputs, protection outputs, and signal outputs does the GWPR-SRIReactor Integrated Differential Protection Relay provide?

The GWPR-SRI Reactor Integrated Differential Protection Relay provides 21 active binary inputs (AC/DC 220 V, DC 100 V, or DC 48 V; please specify when ordering), 11 protection outputs, 2 signal outputs, and 1 device power-loss output, meeting the output requirements for differential protection, overcurrent protection, non-electrical protection, and other protection actions.

Q:Does the GWPR-SRI Reactor Integrated Differential Protection Relay support fault recording and event logging?

The GWPR-SRI Reactor Integrated Differential Protection Relay supports fault recording and event logging. The device can cyclically record the latest 32 fault recording events, 128 protection action reports, and 128 device operation events, facilitating fault analysis and localisation.

Q: What are the auxiliary power supply and ambient temperature ranges of the GWPR-SRI Reactor Integrated Differential Protection Relay?

The GWPR-SRI Reactor Integrated Differential Protection Relay operates with an auxiliary power supply of AC 100 V–264 V, 47–63 Hz; DC 100 V–264 V. The normal operating temperature range is −10 °C to +55 °C, and the extreme operating temperature range is −40 °C to +70 °C.

Q: Does the overcurrent protection of the GWPR-SRI Reactor Integrated Differential Protection Relay support directional supervision and composite voltage supervision?

Both the three-stage definite-time overcurrent protection and the inverse-time overcurrent protection support configurable directional supervision and composite voltage supervision. When the directional criterion is enabled, the protection operates as directional overcurrent protection (ANSI 67), adapting to protection coordination requirements under different operating modes.

Q: Does the GWPR-SRI Reactor Integrated Differential Protection Relay support non-electrical protection, zero-sequence overcurrent protection, and neutral-end overcurrent protection?

Yes, the GWPR-SRI Reactor Integrated Differential Protection Relay supports all of these. It is equipped with 6 channels of non-electrical protection (Alarm/Trip selectable), which can receive Buchholz alarm and trip signals as well as oil temperature and oil level signals from the reactor body. The zero-sequence overcurrent stages I, II, and III (ANSI 50N/51N) and zero-sequence inverse-time overcurrent protection can select direct 3I0 sampling or calculated residual current, designated i0z, via configuration settings. It also provides neutral-end overcurrent stages I and II protection (Trip, with configurable composite voltage supervision).

Q:How can I modify and save the parameters of the GWPR-SRI Reactor Integrated Differential Protection Relay? Does it support remote control and printing functions?

After modifying the parameters of the GWPR-SRI Reactor Integrated Differential Protection Relay, when exiting the parameter setting modification interface, enter password 1000 to save the parameters. Remote control is enabled when the "Remote" binary input is active. The device supports a dot-matrix printer connected via a serial interface and can print settings, event records, fault recording events, and other reports.

Q: Does the GWPR-SRI Reactor Integrated Differential Protection Relay support integrated measurement and control?

The GWPR-SRI Reactor Integrated Differential Protection Relay supports integrated measurement and control. The device integrates protection, measurement, and control, and can measure AC voltages and currents and calculate power and energy, meeting the requirements for integrated measurement and control.