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
Recently, the 5MW/2min supercapacitor energy storage system of Longbai Group was officially put into operation. It is the first time in China that supercapacitor energy storage has been officially applied in the field of high energy consuming industrial enterprises, and has achieved expected results such as suppressing power fluctuations, stabilizing bus voltage, and reducing the maximum demand for electricity. It has reference significance for the field of industrial enterprises with rapid response to impulsive loads such as smelting.
Figure 1: Operational Effect of Energy Storage System
Figure 2: Interior view of supercapacitor compartment
The Longbai Group's supercapacitor energy storage system is divided into two 2.5MW supercapacitor units, which are connected in parallel to the 35kV busbar of Longbai North Substation. For the first time in China, supercapacitors have been used as energy storage devices, and with the help of advanced control strategies, a 10 second discharge peak shaving has been achieved. By collecting the real-time power of two 35kV high titanium slag furnaces to identify three operating states, it has functions such as automatic control of SOC level, adaptive operation mode automatic switching control strategy, receiving stable control commands for discharge and locking, etc., in order to achieve the effects of suppressing fluctuations, stabilizing bus voltage, and improving power quality. This not only promotes the safety and stability of power grid operation, but also reduces the maximum demand for electricity and saves electricity costs.
The smooth operation of this system not only provides strong support for the innovative development of Longbai Group in the energy field, but also means that the super capacitor energy storage technology has been successfully applied in practice in China, marking the important progress of renewable energy storage, providing a feasible technical means for energy transformation, and providing a useful reference for the promotion of super capacitor energy storage in the power system.
Figure 3. Service personnel debugging energy storage backend
NR continues to pay attention to the pain points and needs of the industry, solve industry problems with a pragmatic attitude and positive innovation awareness, promote technological innovation, and lead industry development!