基于模糊矢量投影的机组优化恢复策略

Optimal Restoration Sequence of Generating Sets Based on Fuzzy Vector Projection

针对电网恢复初期的最优机组恢复策略问题,提出基于模糊矢量投影的机组优化恢复策略。首先在总结已有研究成果的基础上对影响机组恢复的主要内、外部因素进行了分析,然后考虑到众多制约因素在语言表达上都具有较大模糊性的特点,利用L-R型梯形模糊数具有的良好合成运算性质,使用模糊数学的方法来处理各种影响机组启动顺序的因素,通过使用归一化后的决策指标矢量与理想解、负理想解之间的投影差异建立排序依据,得到机组优化的排序组合。最终的算例计算结果证明了作者所用方法的正确性及有效性。

An optimal restoration sequence of generating sets based on fuzzy vector projection was presented to determine the thermal power generating units′starting-up sequence during early stages of power system restoration. The internal and external factors which influence the restoration sequence of the generator were discussed based on existing results. Taking into account the fact that many constraints in the language have greater fuzziness and the trapezoidal fuzzy numbers in L R forms have good compose operation properties,the fuzzy mathematics method was used to deal with a variety of factors that affect the boot sequence units. The optimal restoration sequence of generator was obtained by fuzzy vector projection between decision-making index vector,ideal solution and negative ideal solution with normalized trapezoidal fuzzy numbers in L R forms. The correctness and effectiveness were proven through the example of the calculation results.