Protection&Control Transmission Line Protection Busbar Protection Transformer Protection Circuit Breaker Protection Generator Protection Feeder Protection Capacitor Protection Motor Protection Transfer & Synchronization Arc Protection
Digital Substation PCS-221S Merging Unit PCS-221 Merging Unit PCS-222 Circuit Breaker Controller PCS-9250 AC Electronic CT/VT
Automation PCS-9700 Automation System PCS-9700 HMI Software PCS-9705 Bay Control Unit PCS-9705S Bay Control Unit PCS-9799 Station Manager PCS-9799S Station Manager PCS-9710 Remote Terminal Unit PCS-9710S Remote Terminal Unit PCS-9794 Protocol Converter PCS-9785 Satellite-Synchronized Clock PCS-9882 Ethernet Switch PCS-9882Rx DIN Rail Managed Ethernet Switch PCS-9882XD Managed Ethernet Switch PCS-9884 Managed Ethernet Switch Supporting HSR and PRP MUX-2M/64 Communication Interface
Phasor Measurement PCS-997S Fault Line Locator PCS-996S-G Phasor Data Concentrator PCS-996 Phasor Measurement Unit
Disturbance Fault Recording PCS-996RC Disturbance Fault Recorder PCS-996R Disturbance Fault Recorder PCS-986 Disturbance Fault Recorder PCS-9013 DFR Management System
Stability Control System PCS-992 Power Stability Control System PCS-993 Out-of-Step Controller PCS-994 Frequency & Voltage Controller PCS-994S Frequency and Voltage Controller
Power Grid Monitoring and Control PCS-9000 Energy Management System PCS-9000 Distribution Management System
Configuration Tool PCS-Torch MOT Tool PCS-Studio Configuration Tool PCS-Explorer IED Configuration & Debugging Tool PCS-SCD Configuration Tool PCS-COMM Configuration & Debugging Tool
Accessories MD1501 Series Auxiliary Relays MD1701 Series Test Blocks MD1701S Test Block
FACTS PCS-9580 Static Var Compensator PCS-9583 Static Synchronous Compensator PCS-9570 Series Compensation PCS-9590 DC De-Icer PCS-9578 Controllable Shunt Reactor PCS-8200 Unified Power Flow Controller PCS-9571 Fault Current Limiter PCS-9564A Dynamic Voltage Restorer PCS-9569 Shore Power System
HVDC PCS-8600 UHVDC Converter Valve System PCS-9550 LCC-HVDC Control and Protection System PCS-8100 VSC-HVDC IGBT Valve PCS-9520 VSC-HVDC Control and Protection System PCS-9510 Cooling System PCS-8300 High-voltage DC Circuit Breaker PCS-9250 DC Electronic CT/VT
PV & Wind Power Grid-Connection PCS-9561 Wind Energy Converter System PCS-9700 Renewable Energy SCADA PCS-9726 Generation Management Unit PCS-9700F Power Forecast System PCS-9700R AGC/AVC PCS-9563 PV Grid-Connected Inverter
Battery Energy Storage System PCS-8811CB Centralized energy storage system PCS-8812PB Liquid cooled energy storage cabinet PCS-8813CPB High voltage directly connected energy storage system PCS-9567A Power Conversion System PCS-9567C BESS Control Unit PCS-9700 Energy Storage System
Microgrid PCS-9617MG Microgrid Controller
Static Frequency Converter PCS-9575 Static Frequency Converter
Protection,Automation&Control DMS EMS Stability Control & WAMS Digital Substation
HVDC & FACTS De-Icing Unified Power Flow Controller (UPFC) Series Compensation Static Synchronous Compensator(STATCOM) Static Var Compensator (SVC) LCC-HVDC Transmission VSC-HVDC Transmission
Renewable & Microgrid Energy Storage System Microgrid PV Generation SFC
Power Generation Pumped Storage Power Plant Nuclear Power Plant Hydro Power Plant Thermal Power Plant
Transmission System AC Transmission LCC-HVDC Transmission VSC-HVDC Transmission
Distribution System Distribution Network
Industrial Consumer Urban Track Traffic Electrified Railway Oil & Petrochemical Metals & Mining
On December 26, 2023, two sets of 100Mvar STATCOM installed at 500kV Zongjiang Substation in Dongguan, Guangdong were successfully put into operation, after a comprehensible system commissioning and rigorous testing process that includes 1.5 times overload operation, low voltage ride-through, and redundancy tests. Dongguan region has been facing challenges with intensive loads and notable voltage transient stability issues. The successful commissioning of this project will not only enhance the transient voltage stability and improve the safety margin of the power grid operation in Dongguan, but also create a more favorable operating environment for Chuxiong-Suidong and Xingren-Baoan HVDC system.
NR provided comprehensive equipment solutions for this project, including converter valves, valve cooling, control and protection systems, etc. The control and protection equipment, adopted the advanced NR UAPC3.0 hardware platform, ensures exceptional performance, reliability, and safety for large-capacity STATCOM operating in the power grid.
Zongjiang Project incorporates a comprehensive coordinated control strategy that combines reactive power support and active filtering. This strategy effectively addresses both transient voltage support and steady-state filtering requirements. During transient states, the system can temporarily provide 1.5 times the rated reactive current to support bus voltage and expedite fault voltage recovery. Additionally, the project employs a single line diagram adaptive control strategy to accurately compensate for harmonic currents, considering the complex and variable topology configurations within the station. The control targets for harmonic mitigation can be adjusted based on the specific harmonic conditions of the system, while also balancing for harmonic voltage and current control. NR's comprehensive equipment solutions have consistently exhibited outstanding performance, reliable redundancy capabilities, and seamless integration with the power grid, which have been highly recognized by customers.
NR has achieved a significant milestone by deploying 35kV/±150Mvar STATCOM with the largest capacity per unit in China at China Southern Power Grid's 500kV Pengcheng Substation and ±800kV UHV Dongfang Converter Station. Following this achievement, the high-capacity STATCOM at 500kV Zongjiang Substation in Dongguan have also been successfully put into operation. This accomplishment demonstrates NR's leadership in large-capacity STATCOM technology and strengthens its global reputation in exceptional technical expertise and reliable delivery capabilities as a world-class provider of flexible AC system solutions. While pursue its goal of "Creat Value and Serve the Society", NR will continue to make significant contributions to the construction of the new generation power systems.