【摘要】 传统的同步相量测量单元(PMU)配置方法在N-1情况下会丧失对系统的观测能力,而完全考虑N-1情况的配置方法虽然能克服在N-1情况下系统不可观测的缺点,但需要配置的PMU数目较多,经济性差。文中针对以上2种方法的缺点,将田口鲁棒设计法应用到PMU优化配置问题中,提出一种最优成本—绩效比的PMU设计方案。通过基于复杂网络理论的互补性脆弱度指标集求出综合脆弱度指标来辨识重要线路,然后在方案设计过程中重点考虑对重要线路观测并充分考虑了方案对N-1噪声的鲁棒性。在设计实现时通过田口法品质特性指标和信噪比指标分别标示PMU配置方案的N-1观测能力和鲁棒性,最后采用两阶段最佳化程序对PMU配置方案进行设计得出最终方案。算例仿真表明,该方法设计的方案有效且实用。更多还原

【Abstract】 The traditional PMU placement methods may be unable to observe the power system under the N-1 condition,while PMU placement methods fully considering the N-1 condition need too many PMUs to ensure the observability of entire power system.In order to overcome the shortcomings of the above methods,this paper presents a PMU placement method with better cost-benefit ratio.It is based on the principles of Taguchi robust design method.Based on the complex network theory,a set of integrated vulnerability indices calculated by complementary vulnerability index set are used to identify the important lines in the system.By doing so,the aim of the design is focused on ensuring the important lines’ observability and the robustness of the placement plan under the N-1 noise.In the design,the Taguchi quality characteristic and the signal noise ratio indices are calculated to measure the PMU placement plan’s observability capabilities and robustness under the N-1 noise.Finally,a two stage optimization procedure is used to determine the final plan.A sample system is used to test the performance of the PMU placement plan,and the results show that the method is very effective and practical.更多还原