一种基于电容器组优化配置的智能低压无功补偿装置  

An Intelligent Low Voltage Var Compensation Device Based on Optimal Capacitor Banks

作　　者：李川[1] 王军[1] 舒欣梅[1] 韩冬军[1] 

机构地区：[1]西华大学电气信息学院,四川成都610039

出　　处：《西华大学学报（自然科学版）》2010年第4期15-17,21,共4页Journal of Xihua University:Natural Science Edition

基　　金：四川省教育厅重点基金资助(07ZA108);四川省重点学科基金资助(SZD0503090)

摘　　要：针对电容器组在投切过程中产生暂态过电压和涌流的问题,研究了一种基于DSP控制的电容器组同步投切无功补偿装置的设计方法。该方法对电容器组以二进制编码方式分配,优化了电容器的投切阈值。系统以DSP2812为核心,采用电能计量芯片ATT7022A采集电网数据,实现了实时提取三相电压和电流的过零点,同时使用永磁真空同步开关保证了电容器组在最佳相位投切。该优化方案大大提高了补偿效率和控制精度。In order to decrease the transient over-voltage and surge current caused by the capacitors switching,a new DSP-based synchronous closing device for var compensation is studied in this paper.The capacitor banks are distributed in binary encoding mode and the thresholds of switching capacitors are also optimally allocated.This controller is mainly designed based on DSP2812,and the ATT7022A is used to collect the power gird data.Furthermore,real-time voltage and current zero crossing points of three-phase circuit are obtained,and the permanent magnetic vacuum synchronous circuit breaker ensures the best phase of the capacitor bank switching.This optimal design can greatly enhance the efficiency and accuracy of the device.

关 键 词：无功补偿 同步投切 编码方式 投切阈值 永磁真空同步开关 

分 类 号：TM531.4[电气工程—电器] TM714.3