基于操作动作效果预算比较的电压无功综合控制原理

Study on voltage and reactive power control based on operation effect calculation and comparison

“九区图”原理是电压无功综合控制领域中经典的控制理论,每个区的控制规则都是人为给定,缺乏一个明确判据。在新的“五区图”控制原理的基础上提出了一种根据变电站等值电路模型,精确计算预测各相关操作动作对系统电压无功的综合影响,通过进行操作优劣距离比较,选择最优操作动作的新型变电站电压无功综合控制原理。明确提出了基于操作动作效果预算比较,面向VQC装置实际操作动作的控制思想,使VQC装置的控制动作有了明确的判据,动作选择更加合理,更能适应未来电力系统硬件架构及全网联合电压无功优化控制的发展方向。

“Nine-zone” theory is the classic theory in the area of voltage and reactive power synthetical control. As the control strategy is setted by fixed value, an explicit criteria is lacked. This paper presents a new theory with new control target and for future structure in substation. According to the equivalent circuit model of substation, the effect on the voltage and reactive power caused by the interrelated operation can be calculated, then through the comparison of operation quality distance, the optimum operation is determined and selected to excecute. This paper definitely presents the control idea based on the calculation and comparison of control effect and with actual operation oriented. This control theory makes the control of the VQC devices have an explicit creteria and no more blindly, the selection of operation is much more reasonable. This theory is better to suit the future structure of power system and the improving direction of the automatic control over the optimization of voltage and reactive power in entire power network.