基于DSP及永磁机构真空断路器的同步分合闸控制装置

为了减小在投切电容器组时对电力设备造成的危害,笔者采用DSP、CPLD及高速A/D等技术,实现了交流电压、电流同步采样,能准确计算电压、电流、有功功率、无功功率及功率因数等参数,通过测量控制电源电压、环境温度以及同步开关分合闸的数据预测开关动作时间,实现电容器组的同步投切,减小涌流及过电压的危害并依据电压无功综合控制策略完成无功补偿。试验验证,在相同温度及控制电压下,机构本身分散性小,通过补偿温度及控制电压的影响,断路器满足同步控制要求。

A Control Device for Synchronized Switch Based on DSP and Vacuum Circuit-breakers with Magnetic Drive

A control device to synchronously sample AC voltage and current and to accurately compute the parameters,including voltage,current,active power,reactive power and power factor,is presented,which is based on the technologies of DSP,CPLD and high-speed A/D converter.By measuring the DC voltage of capacitors,environmental temperature,and historical switch-on and switch-off data of circuit-breakers,the acting time of the circuit-breakers can be predicted with this device,and the synchronous switch of capacitor ...