配电网络电容器优化投切的作用范围法

Action Scope Algorithm for Optimal Capacitor Switching in Distribution Network

从实时调度角度研究电容器优化投切问题。首先,根据配电网络电容器优化投切就是使无功就地补偿的思想及配电网辐射状运行的特点,提出节点最优条件并作为启发式规则,在不考虑电容器容量限值的条件下,获得电源及电容器的作用范围。然后根据提出的电容器补偿的两个基本规则,在电源及电容器作用范围的基础上,并计及电容器容量限值,计算电容器实际注入无功电流,最后得到电容器的投切组数。采用IEEE69节点系统标准算例验证了算法的准确性和实用性。

This paper studies the optimal capacitor switching problem from a real-time control perspective. Firstly,based on the idea that optimal capacitor switching is for reactive power local, balance and the characteristic of radial operating in distribution network, this paper proposes the node optimal condition that is treated as a heuristic rule. Not considering the capacity constraints of capacitors, this paper gets the action scope of source and each capacitor. Secondly, according to two capacitor compensation basic rules and the action scope of source and each capacitor, reactive injection current of capacitor is calculated with the capacity constraints of capacitors. Finally, the bank number of capacitor switching is obtained. IEEE 69-bus system is adopted to validate the accuracy and practicality of the proposed algorithm.