GWPR300‑AIP Anti‑Islanding Protection Relay
Product Desc
The GWPR300‑AIP anti‑islanding protection relay is mainly applied to 132kV, 66kV and 33kV voltage levels in grid‑connected distributed generation and centralized photovoltaic power generation systems. It realizes anti‑islanding protection, electrical protection, measurement and control to ensure the safe operation of grid‑connected distributed power sources.
- Measurement & Control: Electrical quantity measurement, four‑quadrant energy metering; 21‑channel digital inputs, 13‑channel relay outputs, 1‑channel device power‑loss signal output
- Communication: Dual Ethernet ports, RS‑485 interface; supports IEC104, Modbus‑RTU, optional IEC61850
- Time Synchronization: Supports IRIG‑B (B‑code), SNTP and network message time synchronization
- Recording: Event and fault oscillography storage, supports local report printing
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
Product Overview
- The GWPR300‑AIP anti‑islanding protection relay adopts a 32‑bit high‑performance microcontroller integrated with DSP and FPU computing units. It is equipped with 16‑bit independent ADC for high‑precision sampling, with data validity verification and bad‑data filtering algorithms. The fully‑enclosed chassis features physical isolation between strong and weak‑current circuits for excellent electromagnetic compatibility (EMC) performance. Adopting modular protection element design with independent and flexibly configurable protection logics, the device is equipped with rich hardware interfaces. It integrates protection, measurement, event logging, fault oscillography, back‑office communication and local human‑machine operation functions. It supports panel‑mounted rack installation or on‑site installation inside switchgear, meeting diverse application requirements for high‑voltage photovoltaic and distributed generation grid‑connection sites.
Main Functions
- (ANSI 81O) Over‑frequency Protection Stage I/II/III (Trip)
- (ANSI 81U) Under‑frequency Protection Stage I/II/III/IV/V (Trip)
- (ANSI 59) Over‑voltage Protection Stage I/II/III (Trip)
- (ANSI 27) Under‑voltage Protection Stage I/II/III (Alarm / Trip selectable)
- (ANSI 81df) Rate‑of‑Change‑of‑Frequency Protection (Trip)
- (ANSI 50/51/67) Over‑current Protection Stage I/II/III (Trip, directional blocking optional)
- (ANSI 51N) Zero‑Sequence Overcurrent Protection (Alarm / Trip selectable)
- (ANSI 59N) Zero‑Sequence Overvoltage Protection (Alarm / Trip selectable)
- (ANSI 25) Voltage‑checked Auto‑reclosing (Close)
- (ANSI PTI) PT Circuit Failure Detection (Alarm)
- (ANSI THD) Harmonic Detection (Trip)
- (ANSI 85) External Trip (Alarm / Trip selectable)
Application Scenarios
- Grid‑connection points of centralized photovoltaic power stations and distributed generation systems for 33kV, 66kV and 132kV voltage levels;
- Supports centralized rack‑mount installation or direct on‑site installation within switchgear;
- It provides anti‑islanding protection, frequency/abnormal‑voltage protection, over‑current and zero‑sequence fault protection on the grid‑connection side, along with electrical data uploading, fault oscillography and event alarming.
