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Static Var Generator (Static Var Generator, hereinafter referred to as SVG device) is widely applied to the industrial and traffic power distribution network such as high-voltage AC/DC power transmission and distribution system as well as metallurgy and electric railway etc; its major functions are to improve the operational conditions of power supply and distribution network, enhance the reliability of power transmission and distribution system, restrain the system voltage fluctuation, reduce the pollution of power grid caused by harmonic current and improve the power factor of the system.  

Operational Environment Conditions

Altitude: not higher than 1000m. 

Ambient temperature: -40oC~40oC; 

Cooling-down Method: forced air cooling

Earthquake Intensity: M 8.0

The places are free from corrosive or inflammable gases as well as the current-conducting and explosive dusts. 

Input: 

Grid voltage: single-phase/three-phase, 50Hz/60Hz，6kV、10kV、35kV; 

Allowable running voltage: <120%. 

Compensation Performance: 

Power factor: >0.95 (within rated capacity) not over-compensated; 

Harmonic wave: satisfies GB/T14549

System response time: 5ms for the fastest 

Reliability and service life: the designed service life is 20 years, MTBF>75000 hours; MTTR<5 minutes.  

Controls: 

Control Methods: Instantaneous current detection technology; PWM current tracing control technology; decoupling control technology 

Control chips: adopt the most advanced Digital Signal Processor DSP, Field-Programmable Gate Array EPGA. 

Subordinate functions: all-digital microcomputer control, real-time communication net, self-diagnostic function  

Control functions: reactive compensation control, harmonic current compensation, negative-sequence current compensation, comprehensive compensation 

Control power sources: 380VAC or 220VDC 

Communications: Modbus/Profibus

IPC displays: grid current, grid voltage, load current, SVG current, active power, reactive power, power factor etc. 

Others: 

Protection functions: system protection: overvoltage, undervoltage, overcurrent, short circuit, synchronization loss, phase failure, negative-sequence default etc. 

Unit protection: overvoltage, undervoltage, excessive temperature, short circuit, overcurrent, optical fiber failure etc.   

System structure: integrated design, holistic design, integral transportation, use upon installation 

High-voltage isolation: optical fiber signal 

Power semiconductor: IGBT 

Cooling-down method: air-cooling/water-cooling

Degree of protection: IP20