电力市场条件下配电网无功优化方法的研究

分析我国配电网现状,提出电力市场条件下,以节点电压为约束条件,建立经济效益最大的目标函数。根据无功电流持续曲线中两个重要几何特性—“等面积判据”和“等长度判据”,针对我国配电网中大部分线路的无功负荷随时间波动较大,提出固定与投切混合补偿方式。将其应用于末端集中负荷线路、分布负荷线路最佳补偿方式的求解过程,把求取最大经济效益的积分方程组求极值的困难问题,简化成十分简单的算术运算问题。

Study on Distribution Network's Reactive Power Compensation Method in Electricity Power Market

The paper analyses distribution network' s present situation , establishes objective function based on maximal economic benefit in electricity power market and node voltage is regarded as restriction condition. According to two significant geometric traits of reactive power current persistent curve - " equivalent area criterion" and "equivalent length criterion", fixed and switched mixed compensation mode is presented because our country' s reactive power load of distribution network has big fluctuation. The above method is applied to terminal convergence load circuitry and distribution load circuitry, predigests operation as well.