高中压配电网动态无功优化算法的研究

考虑将各点负荷形态变化的系统优化为动态优化，提出了适用于高中压配电网的动态无功优化算法。该算法直接从动态无功优化的模型出发，通过控制变量的选取和动作时间量的预确定，将动态优化模型转化成同普通无功优化模型完全相同的表达形式。从而可以用任何适用于无功优化的算法从整体上来求解动态无功优化。该算法的数学模型简单，而且便于和现有的无功优化算法集成。算例结果表明，文中提出的动态无功优化算法能在完全满足最大允许动作次数约束的前提下降低系统在一天内的损耗、提高电压合格率，且算法的速度能完全满足实时运行的需要。

STUDY ON THE ALGORITHM FOR DYNAMIC REACTIVE POWER OPTIMIZATION OF DISTRIBUTION SYSTEMS

Load variation is taken into consideration in power system dynamic reactive power optimization. An algorithm for dynamic optimization of the whole medium-high voltage distribution network is presented in this paper. This algorithm simplifies the mathematical model of unknown control variables, determines the assumed switching time of control devices and then converts the dynamic optimization model into the same one as static optimization. Therefore, every method used to solve static optimization can be used to solve the dynamic model as a whole. This methodology is not only simple in modeling, but also easy in integrating into the existing static optimization module. The test results have shown that the presented algorithm can reduce daily energy loss and raise the ratio of qualified voltage under the constraint of maximal allowable daily operating times, as well as satisfy the needs of real-time operation.