考虑电源无功优化时电力系统的无功最优补偿

Optimal Var Compensation in Power System Considering the Optimization of Reactive Output in Var Sources

本文根据网损的等微增率准则和边界条件,提出了考虑电源无功优化时电力系统无功最优补偿的数学模型。该模型能一次解出电源间的无功最优分配和系统无功补偿容量的最优配置。所编制的程序具有多种功能,对地区电网和多电源的复杂区域网均能适用。经实际电网算例表明,若在进行无功补偿的同时,又考虑电源间的无功优化,则能进一步降低网损,提高经济效益。

Based on the criterion of equal incremental losses and boundary conditions, the mathmaticai models for optimal var compensation when considering the optimization of reactive output in var sources is presented in this paper. According to this model, the optimal locations, and capacities for var compensation, and the distribution of reactive power among var sources can be determined by a set of optimal equations. The developed program, having several functions, can serve for not only local network but also complex network with multi-power sources. The calculation of optimal var compensation for actual systems shows that if the reactive power optimization of power sources is considered the transmission loss is further reduced, and the economic profit is also promoted