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-9700 Renewable Energy SCADA PCS-9726 Generation Management Unit PCS-9700F Power Forecast System PCS-9700R AGC/AVC
Battery Energy Storage System PCS-9567MV-10000 Medium Voltage Skid PCS-9567MV-7000 Medium Voltage Skid PCS-9567MV-5000 Medium Voltage Skid PCS-9567MV-3500 Medium Voltage Skid PCS-9567-2500 Twin Power Conversion Systems PCS-9567-2500 電力変換システム PCS-9567-1750 Power Conversion System PCS-9567-1750 電力変換システム PCS-9567 Power Conversion System Vulnerability Disclosure Policy PCS-9567 パワーコンディショナー脆弱性開示ポリシー
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
First Online WG meeting of IEC TC22/SC22F/WG53, “Grid-forming Energy Storage Systems (GFM ESS) in HV AC systems”, was successfully convened on April 28, 2026. Ms. Suzanne Yap, Secretary of IEC TC22/SC22F, sent her warm welcome massage, on behalf of Mr. Yantao Lou, Chairman of IEC TC22/SC22F, Dr. Baoliang Sheng, Deputy Secretary and herself, to the establishment of WG53 team.
Initiated by NR Electric, IEC TC22/SC22F/WG53 is led by Dr. Changjiang Zhan as the Convenor. It currently comprises 25 renowned international experts from 10 countries. As the first official working group on grid-forming technology standards under IEC TC22/SC22F, and also the first IEC working group dedicated to the grid-forming energy storage systems for high-voltage AC power grids, WG53 will focus on terminology/definition, functional requirements, system design, performance specifications, modeling and simulation, testing and verification, as well as operation and maintenance of grid-forming energy storage systems and equipment in high-voltage AC system. The scope covers grid-forming battery energy storage systems (BESS), grid-forming STATCOM, static synchronous condenser (SSC)/E-STATCOM, and other future grid-forming equipment & installations. WG53 will lead the formulation of a unified IEC standard system for grid-forming energy storage systems (GFM ESS) in HV AC systems, providing a solid reference for subsequent standard development and publication under IEC TC22/SC22F.
To address grid challenges brought by the large-scale integration of high-proportion renewable energy into electric power systems, NR Electric has developed the NR-ISGrid Grid-forming solution with featuring full-process voltage-source characteristics and inherently natural response. The solution is capable of independently establishing a power grid, coordinating operation with multiple types of power supply resources, and supporting the smooth transition from a traditional power system to a renewable energy dominated power system.
NR Electric has taken the lead in developing a full range of NR-ISGrid grid-forming equipment, including grid-forming energy storage, static synchronous condensers, grid-forming STATCOM and grid-forming VSC-HVDC. To date, NR has delivered over 170 grid-forming projects worldwide, with a total installed capacity exceeding 20 GW.
Moving forward, NR Electric will continue together with international communities to contribute to the development of relevant IEC grid-forming standards, promote greater contributions to the construction of the new power system in the future.