针对目前配网中电压与电流较难实时测量的问题,详细介绍了MCR的无功补偿控制系统采样电路的设计思想,设计出基于DSP采样的硬件电路,对硬件电路设计上进行了优化,对硬件的可靠性详细的分析.由于滤波以及触发信号的时间基准问题,同时也设计了相位补偿硬件电路以及过零检测硬件电路.实验结果表明采样电路、相位补偿电路和过零检测电路解决了MCR的无功补偿控制系统中电压、电流采样问题以及晶闸管触发信号的时间基准问题.%In view of the current distribution network voltage and current to be difficult of real-time measurement problems,the design principle of sampling circuit of reactive power compensation MCR control system is introduced,the design of hardware circuit based on DSP sampling is optimized,the reliability of hardware is analyzed in detail.The phase compensation hardware circuit and the zero crossing detection circuit are also designed for the time reference of the filter and the trigger signal.The experimental results show that the sampling circuit,the phase compensation circuit and the zero crossing detection circuit can solve the problem of voltage and current sampling in the reactive power compensation control system of MCR,and the time reference of thyristor trigger signal.
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