电力电容无功补偿技木的应用

分析了电容无功补偿技术在油田电网中的应用特点、存在问题，阐述了工作环境、电网环境对电容器正常运行及保障电力系统的影响，并提出了解决措施。应用表明，使用低压无功补偿和高压无功补偿相结合的方法，可有效提高电网功率因数，降低了线路无功损耗和网损。

烯烃厂6kV变电所无功补偿改造

针对烯烃厂6 kV变电所电功率因数存在的不足,利用调压式无功补偿原理,对并联电容器补偿容量进行了计算,并采取了谐波抑制措施。工业运行结果表明:采用并联电力电容器后,按照现负荷35 MW,其功率因数由0.8补偿到0.9,可降低上级主变有功损耗达0.9 M。

中石化管道储运分公司潍坊输油处抢维修中心

电力电容器作为电力系统无功补偿、消除谐波的重要装置,电容器组的正常运行对于电力系统电能的质量与效益都起着重要的作用,但由于电容器本身的设计及运行条件各方面的原因,造成电容器不能正常投运,针对问题,进行分析、总结出好的解决方法。

Comparative study of effectiveness of different var compensation devices in large-scale power networks

A comparison of the effectiveness of installing reactive power compensators,such as shunt capacitors,static var compensators(SVCs),and static synchronous compensators(STATCOMs),was presented in large-scale power networks.A suitable bus was first identified using modal analysis method.The single shunt capacitor,single SVC,and single STATCOM were installed separately on the most critical bus.The effects of the installation of different devices on power loss reduction,voltage profile improvement,and voltage stability margin enhancement were examined and compared for 57-and 118-bus transmission systems.The comparative study results show that SVC,and STATCOM are expensive compared to shunt capacitor,yet the effect of installing STATCOM is better than SVC and the effect of installing SVC is better than that of shunt capacitor in achieving power loss reduction,voltage profile improvement and voltage stability margin enhancement.