基于控制器局域网的模块化低压无功补偿装置  

Modularized low-voltage reactive power compensation device based on CAN

作　　者：王飞[1] 米增强[1] 

机构地区：[1]华北电力大学电力系统保护与动态安全监控教育部重点实验室,河北保定071003

出　　处：《电力自动化设备》2009年第6期98-101,共4页Electric Power Automation Equipment

摘　　要：所设计的基于控制器局域网(CAN)的新型模块化低压无功补偿装置由一系列通过CAN总线互联的模块组成,主模块能够智能识别总线上连接的所有补偿模块,模块的个数取决于实际需要的补偿容量。装置的智能控制策略综合考虑了无功功率、电压限制、功率因数、负载电流、最小补偿电容器容量等因素。在模块化补偿装置的投切判断程序中嵌入了电容器补偿容量的动态修正环节,根据母线电压的波动实时修正补偿容量,可以减小投切判断环节的偏差。与常规无功补偿产品的对比分析和实际测试结果表明,模块化结构可靠性好、功率密度高、接线简单、扩容方便,综合智能控制策略和补偿容量动态修正改善了性能指标,在各种配置完全相同的情况下该装置的补偿效果优于常规的无功补偿产品。The designed low- voltage reactive power compensation device is composed of the main module and several compensation modules interconnected through CAN bus. The main module can identify all connected compensation modules and the quantity of compensation module depends on the compensation capacity required. Voltage limitation, power factor, load current and minimum capacitor capacity are considered in its control policy besides the load reactive power. The dynamic modification technology is adopted in the capacitor switching judgement program to reduce its error,which adjusts the compensation capacity in real time according to voltage fluctuation. Contrastive analysis with conventional device indicates that the modularized structure has high reliability,high power density,simple connection, convenient extension,etc.. Practical test results show that,the intelligent control policy and dynamic modification technology improve the performance index of the new device and its compensation effect is better than the conventional product with the same configuration.

关 键 词：控制器局域网 无功补偿 模块化结构 动态修正 低压 电力系统 

分 类 号：TM714.3[电气工程—电力系统及自动化] TP393.1[自动化与计算机技术—计算机应用技术]