动态规划法在配电网电压无功控制中的应用

提出利用动态规划法解决配电网电压无功控制问题。基于对主变每时段的负荷、馈线每部分的负荷和主变高压侧电压的预测值，利用动态规划法（DP法）确定主变分接头、并联电容器和馈线电容器的优化动作方案，从而使配电网的网络损耗最小，主变低压倒电压与其理想值的偏差最小，主变的功率因数尽可能的高，约束条件包括主变分接头、电容器一天内最大操作次数，馈线电压允许范围，主变功率因数的允许值。为了说明这种方法的有效性，我们将其应用到沧州电力公司某变电站的部分系统中进行无功电压控制。

Dynamic Programming Approach to Reactive Power Voltage Control in A Distributed Network

This paper presents a dynamic programming method for solving reactive power voltage control problem in a distributed network.The objective of this paper is properly to dispatch main transformer under load tap changer,substaion capacitor and feeder capacitors by using DP based forecast hourly loads of main transformer and each feeder section and primary bus voltage such that the total feeder loss can be minimized,voltage profile can be improved,and main transformer power factor is ad much as high.The constraimts that must be considered include maximum allowable number of switching operations in a day for under load tap changer and each capacitor,and the voltage limit on the feeder,and main transformer power factor is limited.To demonstrate the usefulness of the proposed approach,reactive power/voltage control in the part system of a substation of Cangzhou power company is performed.