自贡电网无功补偿及其优化

近年来,随着电网容量的增加,对电网无功功率补偿的要求也日益明显。无功功率如同有功功率一样,是保证电力系统电能质量、降低电网损耗以及系统安全运行所不可缺少的重要组成部分。对四川自贡电网的无功补偿现状作简要分析,在分析电容器、调相机和各种静止补偿器的工作原理基础上比较其各自的优缺点。最后,针对当前无功补偿的薄弱环节——长线路补偿问题进行了定量分析。所做研究对无功功率平衡及补偿方式的优化对电力系统降损节能有一定的指导意义。

Reactive Power Compensation and Its Optimization in Zigong Power Grid

With the rapid development of power grid recently,the needs for reactive power compensation also increase a lot.Like active power,the reactive power plays a key role in guaranteeing the power quality of power system,reducing the power loss in grid and ensuring the safety of whole power system.According to the brief analysis on reactive power compensation of Zigong Power Grid in Sichuan,the advantages and disadvantages of capacitors,rotary condensers and various static var compensators are given based on the analysis of their operating principles.Aiming at the weak points of reactive power compensation,namely compensation on long transmission line,a detailed analysis is given with pictures and tables.It is useful in reactive power equilibrium and compensation optimization,as well as in loss reduction and energy conservation.