【摘要】 开放的电力市场要求有竞争性的无功辅助服务,这就需要确定由不同无功源所提供的无功功率支持的价值并以此对无功辅助服务定价。本文首次提出有效无功容量的概念,并建立了基于统一优化补偿的无功市场模型,然后将无功电力市场分解为无功容量市场和无功电量市场。强调应根据无功源对系统安全与稳定的贡献来确定由其提供的无功功率的价格,通过灵敏度研究证明了该方法的正确性。以IEEE-30节点系统和四川电网为例对无功功率价格进行了仿真和计算,结果表明了该方法是可行和合理的。更多还原

【Abstract】 A deregulated electricity market demands competitive reactive power auxiliary service, so it is necessary to determine the values of reactive power supports from different reactive power sources, according to these values the reactive power auxiliary services can be priced. Here, the concept of effective reactive power capacity is first put forward, and the model of reactive power market is established on the basis of global optimal compensation, then the reactive power market is divided into two markets, i.e., the reactive power capacity market and the electricity quantity market of reactive power. It is emphasized that the values of reactive power supports should be determined according to their contributions to the stability and security of power system respectively. The correctness of the presented method is proved by the results of sensitivity analysis. Taking the IEEE-30 bus system and Sichuan power grid for examples, the simulation and the calculation for the presented method are conducted, the results of the calculated prices of reactive power show that the presented method is feasible and reasonable.更多还原