一种计及脆弱性指标的分布式电源优化配置方法

Optimization Configuration Method of Distributed Power Supply Considering Vulnerability Index

更多的分布式电源接入电网是一种趋势,这种趋势使得分布式电源对电网的运行脆弱性影响越来越大。针对此问题,首先对电网的运行脆弱性进行研究,继而提出一种能够全面评价电网运行综合脆弱性的指标。再结合以往电网优化配置常用的考虑经济性方面的电网有功损耗指标和考虑电压质量方面的静态电压稳定性指标,建立一种计及电网运行脆弱性指标的多目标优化配置模型,运用提出的改进型量子粒子群算法对该模型进行优化求解,仿真算例最后得到分布式电源在容量、位置方面的全方位优化配置结果,结果表明,与传统的优化配置模型相比,在保证电网经济性和电压质量良好的状态下,还能改善电网运行脆弱性,证明了所提模型的优越性。

More distributed power supplies are connected to the grid.This trend has made distributed power sources more and more influential to the operational vulnerability of the grid.To solve this problem,firstly,the operational vulnerability of the power grid is studied,and then a comprehensive vulnerability index that can comprehensively evaluate the operation vulnerability of the power grid is proposed.Combined with the commonly used economic power consumption loss index and the static voltage stability index considering voltage quality,a multi-objective optimization configuration model considering the grid operation vulnerability index is established.The improved quantum particle swarm optimization algorithm is used to solve the model.The simulation example finally achieves the optimal configuration of the distributed power supply in terms of capacity and position.The results show that comparing with the traditional optimized configuration model,not only the grid economy and voltage quality can be guaranteed,but the grid operation vulnerability will be improved as well,thus the superiority of the proposed model being verified.