The complete set of high-voltage reactive power compensation equipment is a key device used in 6kV~35kV power systems. It achieves dynamic reactive power compensation through parallel capacitor banks and intelligent control systems. Its main functions include:
Power factor improvement: Compensate for the reactive power demand of inductive loads to stabilize the power factor above 0.95
Voltage stability: suppress voltage fluctuations and control the fluctuation amplitude within ± 2%
Harmonic control: By using series reactors (reactance rate of 4%~12%) to suppress 5-7 harmonics, the harmonic distortion rate can be reduced to below 3.5%
Main circuit components
High voltage parallel capacitor bank: adopts full film or film paper composite structure, with flexible capacity grouping (equal capacity/unequal capacity)
Series reactor: H-grade copper wire winding, suppresses closing inrush current (limiting factor ≤ 2)
Vacuum contactor/circuit breaker: no reignition switching, with a lifespan of up to 100000 times
.
Control system
Voltage and reactive power integrated controller: supports RS485 communication and realizes the "four remote" function
Protection unit: equipped with multiple protections such as PT disconnection, overvoltage, and capacitor overcurrent
Application scenarios
New energy stations: smoothing wind/photovoltaic power fluctuations
Heavy industry: solving the problem of three-phase imbalance in electric arc furnaces (reducing negative sequence current from 15% to 3%)
Substation: Reduce line loss through grouped switching, with a typical energy-saving rate of 8%~15%
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