中文摘要本课题讨论以低压电网无功补偿改造为背景，讨论低压无功功率补偿装置，该装置以实时的电网监测数据为依据，采纳动态补偿的方式，投切、分段时按国家有关规定限制涌流，补偿断电源功率因数不低于 0.95，自动补偿电网中的无功损耗，提高功率因数，降低线损，从而提高电网的负载能力和供电质量。装置采纳 PQC—100 系列无功功率自动补偿控制器，取样物理量为无功电流，沟通采样抗电网高次谐波干扰，提取基波电力参数控制投切电力电容器来提高功率因数。电容器接触器则采纳CJ19-63/21 系列，该接触器带有抑制涌流装置，能有效的减少合闸涌流对电容的冲击和抑制开断时的过电压。关键字：无功补偿，低压, 控制器，接触器，电力电容器英文摘要The research of the low voltage reactive power compensation transformation as the background, research for low voltage reactive power compensation device, the device to the real-time grid based on the monitoring data, the dynamic compensation method, switching, segmented according to relevant state regulations limit the inrush current, the compensation off power supply power factor of not less than 0.95, automatic compensation of power grid reactive power loss, improve power factor, reduce the line loss, thereby increasing the load of the power grid and power quality.Device using PQC - 100series of reactive power automatic compensation controller, sampling the physical quantity for reactive current, AC sampling of power system harmonic interference, extracting the fundamental harmonic power parameter control switching power capacitor to improve the power factor. Capacitor contactor adopts CJ19-63/21 series, the contactor with inhibition of inrush current device, can effectively reduce the inrush current of capacitor and the impact of inhibition at breaking overvoltage.Key words:reactive power compensation,low voltage,controller,contactor, electric power capacitor毕业设计（论文）原创性声明和使用授权说明原创性声明本人...
