Study On The Influence Of 220kV Shunt Reactor On The Operation Characteristics Of The Whole Cable Power Network

Zhuhai Hengqin New Area Grid adopting 20 k V Voltage Level and a 220 k V system the entire cable power line reactive power charging.The district is now using 20 k V shunt reactor compensation mode,resulting in a large number of reactive power through the main transformer,the main variable power factor is very low.Hengqin New Area Power Grid plans to build a 220/20 k V substation,the installed capacity of 220 k V Shunt Reactor,of 220 k V side charging reactive power compensation.Large capacity of the reactor,the cast may have a greater impact on the system.For assessment of reactor on the system impact,this study intends to according to the Zhuhai Hengqin grid network wiring and components parameters,the system model is established,and this model is based on key research problems: shunt reactor on each node of the system power factor and system without influence of voltage and reactive power;reactor switching effect on the system over-voltage,including removal of the reactor overvoltage analysis,reactor switching inrush current analysis,reactor switching effect on system voltage;reactor switching on system resonance effect;reactor switching ferromagnetic resonance effect;reactor on protective relaying system influence.Through the research and analysis,it can fully grasp the law of the influence of the 220 k V shunt reactor on the system,and put forward the elimination and control measures for the adverse effects of the system.