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Wuhan GuoWei ZhiChuang Technology Co., Ltd. specializes in manufacturing a wide range of protection relays for voltages up to 110KV, including optical differential, bus differential, distance, and anti-islanding protection relays. These products are available in multiple series and configurations to meet diverse customer requirements. The company also supplies various system panels, such as PLC panels, excitation panels, industrial control panels, synchronizing panels, protection panels, metering panels, communication panels, remote terminal unit (RTU) panels, dispatching data network panels, AC/DC distribution panels, and more.
With extensive expertise in electrical engineering design and technical support, the company provides end-to-end solutions for power automation systems, including design, installation, and commissioning. Its products and services are widely used in substations, hydropower plants, thermal power plants, industrial facilities, and commercial buildings. Furthermore, the company develops protection control and automated monitoring systems for renewable energy applications, including photovoltaic and wind power generation.
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GWZC-9000 Drainage Pumping Station Automation System
Drainage Pumping Station Automation System—Forging a New Urban Flood Control Ecosystem
Drainage pump stations employ electromechanical systems for active water discharge, IoT and AI for precise regulation, and backup power for reliability. Digital twin platforms optimize decision-making with failure prediction and damage assessment. Each ¥100M investment reduces annual losses by ¥230M while saving 30% energy, as proven by Tokyo's flood defense system.
2025/07/23
Hydropower Station
Comprehensive Analysis of the Yarlung Zangbo River Hydropower Station
Massive hydropower potential, extreme seismic/geological challenges, unprecedented engineering (tunnels, dam, turbines), sensitive ecology, and critical transboundary impacts.​
2025/07/22
VT (Voltage Transformer ) Protection RelayRear View
Comprehensive Protection Relay: Full Analysis​
A comprehensive protection relay is an intelligent device that safeguards electrical systems by detecting faults (e.g., overcurrent, short circuits) and isolating affected equipment. It integrates multiple protection functions, ensures system reliability, and prevents damage. This guide covers its definition, working principle, protection targets, activation conditions, and outcomes.
2025/07/18
GWZC-9621 Distribution transformer protection relay
Three IEC International Standards for Electrical Relays Led by China Have Been Officially Released!
IEC 63522-6:2025 Electrical Relays – Tests and Measurements – Part 6: Contact Circuit Resistance (or Voltage Drop); IEC 63522-35:2025 Electrical Relays – Tests and Measurements – Part 35: Resistance to Cleaning Agents,IEC 63522-36:2025 Electrical Relays – Tests and Measurements – Part 36: Fire Hazard,Issuing Body: International Electrotechnical Commission (IEC)
2025/07/07
Technical Knowledge more
Generator Protection Panel
Generator Protection Relay Panel : Composition and Function
Integrating protection, measurement, and communication, the Generator Protection Relay Panel can realize the protection and control of various units, enabling unattended or minimally attended operation. It can achieve generator differential protection, rotor earth fault protection, stator earth fault protection, excitation protection, overcurrent protection, overvoltage protection, overload protection, backup protection, etc.
2025/11/25
Main Transformer-Protection Panel
Transformer Protection Relay Panel:Composition and Function
Transformer Protection Relay Panel is primarily used in automation systems for substations and distribution stations in power systems of 11kV, 33kV, 132kV and above. Its main function is to ensure that the transformer can promptly trip the faulty circuit in case of overload, short circuit, gas relay activation, and other abnormal operating conditions, thereby protecting the main transformer from damage and preventing the expansion of faults.
2025/11/24
Feeder Protection Relay
Common Protection Functions for Feeder Protection Relays?
Feeder protection relays are a type of line protection relay and serve as critical devices in distribution systems for protecting power cables (feeders). They integrate multiple protection functions to achieve comprehensive, reliable, and selective protection. Below are the commonly used protection functions of feeder protection relays, along with their corresponding ANSI codes.
2025/11/14
Transformer protection relay
Transformer Differential Protection(ANSI 87T): Working Principle, Function, and Setting Calculation
The working principle of the Transformer Differential Protection Relay is based on Kirchhoff's Current Law. This law states that the sum of currents entering a node is zero. Ideally, for a healthy (non-faulted) transformer, the current entering the primary winding should equal the current leaving the secondary winding (after accounting for the transformer's turns ratio and phase shift).
2025/11/12
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+86-17621210051
+86-17621210051
+86-17621210051
+86-17621210051
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