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
"The artificial short circuit test of grid-forming energy storage for the 50MW PV and storage project in Suo County, Tibet, achieves a complete success!" At 16:00 on January 26, 2024, the person in charge of the on-site test announced the results of the test, the first high-altitude grid-forming energy storage provided three times the current during a three-phase short circuit, which effectively enhanced the strength of the system, embodied the characteristics of the voltage source, and successfully verified the active support role of the grid-forming energy storage during the fault of a weak grid at high altitude.
Suoxian project is the first set of grid-forming energy storage system in Tibet, with an altitude of about 4100m, and the transmission line is set up in accordance with a single circuit, and the terrain along the route is dominated by mountainous and alpine mountain ranges, which leads to the local regional grid being at the end of the line, and the grid is relatively weak. After a large number of new photovoltaic power generation equipment installed, the local power grid shows the trend of inertia reduction, system strength becomes weaker, stability problems become more and more serious. In order to solve the problem of grid stability, and effectively protect the residents' production and life with electricity, NR provided the project with 10MW/40MWh grid-forming energy storage system, consisting of 22 sets of energy storage converters with 3 times/10s transient overload support capacity.
NR full set of solutions for this project, including grid-forming Power Conversion System (PCS), Power Management System(PMS) and Energy Management System (EMS). The system can not only realize the peak shaving and valley filling of PV power generation on a long time scale, but also realize the support of grid frequency and voltage in dynamic and transient processes, so as to realize the stable operation of the weak grid with a high proportion of renewable energy.
The on-site tests were carried out on the functionalities of grid tolerance, high and low voltage ride-through, frequency and voltage regulation, inertia support, damping control, phase jumping, and network control, etc. The results of the test showed that all the performance indexes meet the expectation, and it has strong grid adaptability and active support capability. and active support capability.
The successful completion of the artificial short-circuit test of Suo County project has actually verified the ability of grid-forming energy storage to support the stability of grid voltage and frequency. NR will rely on a deep understanding of the new power system with a high proportion of renewable energy, and continue to solve the problems arising from its development with technological innovation, to make more contributions to the enhancement of renewable energy consumption and the stable operation of the power grid.