Research On Optimal Configuring Of Power Quality Monitors In Distribution Network

The rapid development of national economy has greatly promoted the construction cause of power system in our country. With the increasing grandness of power system scale, it's very significant to realize comprehensive, reliable, dynamic and real-time monitoring of power grid to ensure the stability and security of power system. At present, the subjective monitoring means, with a view to steady and partial supervision, are unable to perform synchronous measurement work of the whole power grid, so there is lack of effective monitoring and management platform for operation dispatching of system. This paper emphatically studies optimal configuring of power quality monitors, which implements optimum number and location of monitors by certain optimization algorithm, in order to establish a good foundation for wide area online measurement system.The main research methods of optimal allocation of monitors are summarized in this paper. On the basis of this, according to practical conditions of our economic level and technical difficulty, two hierarchy of optimal configuration is first proposed through deep analysis, including no given and given configuration quantity of PMU, of which optimization mathematical models are presented in this paper. A FPDC-MAGA algorithm used to solve mathematical models is proposed, which combines FPDC strategy and modified adapted genetic algorithm. And concept of global critical configuration, less configuration and over configuration is first proposed in this paper.Optimization algorithm of each hierarchical configuration is analyzed mainly in this dissertation. For the first-hierarchy optimal configuration, the related mathematical theories and configuration principles are described. Based on mathematical model and FPDC-MAGA algorithm, the optimization configuration algorithm and corresponding flow chart without given installation quantity of PMU are shown in this paper. For the second-hierarchy optimal configuration, the judging basis of optimum configuration is analyzed, and referring to global critical configuration, this paper studies the optimization configuration with given installation quantity of PMU from two aspects such as less-configuration and over-configuration.Take the IEEE 37-node system as the example, in the light of optimal configuration algorithm flow of power quality monitors as proposed, this article has respectively confirmed the effectiveness of two hierarchical optimization algorithms through compile program, analyzed and compared the results obtained by program operation, in order to further assess the feasibility of optimization algorithm.