QWD Safety and Stability Control Device

Product Feature

• Advanced and Reliable

   Utilizes 64-bit floating-point SOC chips and a real-time operating system, featuring reliable technology, easy maintenance/upgrading, and strong compatibility.

  
  

• Comprehensive Analysis

  Features comprehensive accident analysis, recording protection events, fault waveforms, operation/withdrawal, self-check, etc., enabling reproduction of faults and equipment actions. 
• Dual Safety

   The protection core and blocking core have independent starting elements. The entire equipment outputs only when both elements are active, ensuring high safety. 

• Flexible Control

  Equipped with a highly versatile transient stability control policy table, configurable via PC tools to meet the needs of different power grids. 
• Modular Architecture

  Adopts a master-slave structure (1 master, 1-5 slaves). Hardware and software are modularized/standardized, allowing flexible configuration and expansion on demand. 

• Powerful Communication

  The station level supports 3 independent Ethernet interfaces (IEC61850), uses fiber optic communication, and modular programs facilitate configuration and debugging.

Related Products

BP-2C Busbar Protection Relay

The BP-2C is a numerical busbar differential protection intended for protecting and monitoring various busbars of various voltage levels, ranging from 1000kV to 110kV. BP-2C can detect and clear all types of internal faults.

Learn more

PRS-778 Transformer Protection Relay

The PRS-778 is a numerical distributed transformer protection intended for protecting and monitoring various transformers of various voltage level, ranging from 1000kV to 110kV. PRS-778 can detect and clear all types of internal faults.

Learn more

PRS-753 Line Protection Relay

The PRS-753 is a numerical line differential and distance protection intended for protecting and monitoring various line arrangement of various voltage level, ranging from 1000kV to 110kV. PRS-753 can detect and clear all types of internal phase-to-phase and phase-to-earth faults locating within the line protection zone.

Learn more

PRS-721 Breaker Protection Relay

The PRS-721 is a digital breaker protection device and can be applied for all kinds of busbar arrangement of various voltage level ranging from 1000kV to 110kV. By default, breaker failure protection, voltage protection, overcurrent protection, stub protection, broken conductor check and automatic reclosing function is taken as the standard function of PRS-721.

Learn more

PRS-7367 Feeder Protection Relay

The PRS-7367 is a numerical distributed protection intended for protecting and monitoring various primary apparatus including overhead line, underground cable, transformer, capacitor, etc. PRS-7367 can be used in various voltage level. PRS-7367 can detect and clear all types of internal phase-to-phase.

Learn more

PRS-789-H Auxiliary Relay

PRS-789-H series auxiliary relays are mainly used with main protection and control devices. Each relay type is designed with a specific function such as TCS, trip and lockout.

Learn more

PRS-7395 Merging and Control Unit

PRS-7395 Merging and Control Unit (hereinafter referred to as "the device") is a device integrating smart substation’s Smart Control Unit and Merging Unit with the function of local operating box to provide digital interfaces and act as smart accessories for traditional CBs, disconnect switches and instrument transformers.

Learn more

PRS-7973 Multifunction Fault Recorder

The PRS-7973 multifunction fault recorder is mainly used for recording the dynamic fault processes of power system anomalies. It is mainly designed to capture and diagnose the changing process of relative electrical parameters of the power system.

Learn more