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 18, 2020, the complete set of voltage sag control equipment based on high-speed switch, independently developed by NR, has successfully passed the full set type test of Xi'an High Voltage Apparatus Research Institute (XIHARI) and its performance has been fully certified by the authority. Among them, the fastest switching time of dual power fast switching device is less than 16ms. The fastest working time of bus voltage current limiting protection device is less than 10ms, which can reduce the fault current from 80KA to 1.6 KA in the first half wave. NR voltage sag control series equipment can effectively reduce the production accidents caused by voltage sag and greatly improve the reliability of power supply.
Voltage sag, also known as "Power Swing", will lead to the trip or damage of sensitive equipment in the enterprise, causing significant economic losses and safety risks to the enterprise. The traditional voltage sag control equipment is distributed compensation around the load side or centralized compensation based on power electronic devices. The overall equipment cost is high, which is far beyond the scope of the enterprise. Many enterprises are still suffering from the hidden danger of power consumption caused by long power swing time.
Based on the customers’needs, NR has developed a series of equipment that should respond to the impact of high-speed switching technology accumulated in high-end equipment such as ± 500kV high-voltage DC circuit breaker, 220kV lossless short-circuit current limiter, and ± 10kV DC distribution network circuit breaker, as well as high-speed fault detection technology in the field of protection. The equipment adopts standard metal enclosed armored switch cabinet, with the same size as conventional switch cabinet of the same level, and flexible installation, which is suitable for new construction and reconstruction projects.
NR has a leading advantage in core technology in the field of power protection control and intelligent power equipment. According to the user's actual grid structure and load distribution characteristics, it can provide a customized comprehensive solution for power swing control. It can realize fast protection, fault isolation and power switching under different fault forms, and minimize the impact of grid power swing on the power quality of users.
The successful development of a series of equipment for power swing control based on high-speed switch is a breakthrough in the field of ensuring the reliability of AC distribution network power supply.