利用经济压差确定动态无功补偿容量的方法  

New Approach to Determine Capacity of Dynamic Reactive Power Compensation Using Economic Voltage Difference

作　　者：钱峰[1] 郑健超[1] 汤广福[1] 贺之渊[1] 

机构地区：[1]中国电力科学研究院,北京市海淀区100192

出　　处：《中国电机工程学报》2009年第1期1-6,共6页Proceedings of the CSEE

基　　金：国家重点基础研究发展计划项目(973项目)(2004CB217907)~~

摘　　要：针对现阶段中国电网设计无功补偿容量的缺陷,提出一种基于经济压差确定动态无功补偿容量的算法。分析中国电网无功补偿现状,基于无功补偿应遵循的基本原则,引入经济压差的概念,通过电网各种运行方式下线路的剩余无功,变压器无功损耗和负荷,推出合理的计算动态无功补偿容量区间的公式,以减少电网输送无功时产生的有功损耗和电压降落。该方法可以有效地改变中国电网线损率高的现状,提高电网无功补偿的投资效益,有利于提高电网电压质量和运行的经济效益。仿真实例证明了本文提出方法的有效性和实用性。Aiming at the limitation in designing reactive compensation arrangement in power grids of China at present, a novel algorithm was proposed to determine dynamic reactive power compensation capacity according to economic voltage difference. The present situations of reactive power compensation in power grids of China were analyzed and the concept of economic voltage difference was introduced based on basic principles of it. The calculation formula for reasonable range of dynamic reactive power compensation capacity was derived by using surplus reactive power of transmission line, reactive power loss of transformer and load of various operational modes in order to reduce active power loss and voltage drop caused by transmitting reactive power. The proposed method can effectively reduce line loss and investment of reactive power compensation in power grids, improve voltage quality and operation benefits. Simulation results testify the validity and practicality of the proposed method.

关 键 词：无功补偿 容量 经济压差 有功损耗 电压质量 

分 类 号：TM71[电气工程—电力系统及自动化]