基于改进Tabu搜索算法的区域电网无功优化

Reactive Power Optimization in Area Power Grid Based on Improved Tabu Search Algorithm

为了满足无功优化的实时控制要求,提出了考虑静态电压稳定的区域电网无功优化方案。该方案采用改进的Tabu搜索算法,以有功网损最小为目标进行无功优化,记录优化过程中搜索得到的前10位最优网损解;然后对这10个最优网损解进行静态电压稳定裕度计算,再运用模糊集理论,将网损最小和静态电压稳定裕度最大两个目标的优化问题转化为单目标优化问题。通过算例仿真,证明了改进Tabu算法适合于解决区域输电网无功优化问题,同时也验证了本文提出的考虑静态电压稳定性的区域输电网二级无功电压控制方案是可行的,有效的。

In order to meet the requirements of real-time control for reactive power optimization, this paper puts forward a new reactive power optimization method in area power grid, which is the secondary optimization control of voltage and reactive power in area power grid based on improved Tabu search algorithm, firstly, the minimum active power loss is chosen as objective function, and the improved Tabu search algorithm is applied to the reactive power optimization, in which the top 10 solutions are recorded; secondly, static voltage stability margins for the top 10 solutions are calculated; thirdly, by using fuzzy set theory, the two objectives including the minimum active power loss and the maximum margin index are converted into single objective, at last, solution corresponding the maximum of single objective function is the final optimal result of reactive power optimization in area power grid. Simulation results indicate that, not only is the improved Tabu search algorithm suitable to solve reactive power optimization in area power grid, but also the secondary optimization control of voltage and reactive power in area power grid based on improved Tabu search algorithm and considering static voltage stability is practicable and effective.