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 September 30, 2022, the Fujian-Guangdong Interconnection Back to Back DC Transmission Project was formally completed and put into operation. NR has provided complete core equipment such as converter valve and valve cooling system, measuring system and stability control for the project.
The Fujian Guangdong Project is a major project of State Grid Corporation of China and China Southern Power Grid Corporation to ensure the safe and reliable supply of electricity and help achieve the goal of carbon peaking and carbon neutralization. A new converter station is to be built in Mapu Township, Fujian Province. Two back-to-back LCC-HVDC units with rated voltage of ±100kV and rated capacity of 1000MW are to be built.
NR has designed a suspension back-to-back quadruple valve tower tailored for the Fujian Guangdong Networking Project. The structural innovation design has realized that all AC and DC bus interfaces of the quadruple valve tower are arranged on the same side of the valve tower, greatly simplifying the layout of the valve hall equipment. The valve cooling protection & control adopts the new generation UAPC3.0 platform, which has faster operation speed, higher reliability and smaller chassis size.
An AC electronic voltage transformer that can realize high-precision harmonic voltage measurement is developed, which has small measurement delay and high temperature stability, and effectively supports accurate harmonic control of active power filter. Aiming at the two-way flexible DC power transmission mode between Fujian and Guangdong, the AC section power loss protection device using adaptive fault criteria is developed to accurately identify faults, optimize the configuration of stability control system, and ensure the safe and stable operation of the power grid.
The completion and operation of the Fujian Guangdong Interconnection Project, realized the interconnection of the power grids of Fujian and Guangdong, provided mutual backup and support in emergency situations, and improved the power grid supply guarantee capability under extreme conditions. It is the first time to realize the flexible interconnection between the State Grid and China Southern Power Grid through back-to-back DC, which promotes the optimal allocation of power resources in a wider range. At the same time, it has effectively improved the delivery capacity of clean energy in Fujian Province, and promoted the green and low-carbon development in southern China.
The smooth implementation of the Fujian Guangdong project has demonstrated the comprehensive strength of NR in the field of high-end electrical equipment. NR will strive to make greater contributions to global power system reliability.