配电网动态无功优化方法研究及系统研制
发布时间：2018-08-04 14:53
【摘要】：随着我国社会经济的不断发展、人民生活水平的不断提升,人们对于高质量电能的需求越来越强烈。近年来,我国电力事业发展十分迅速,配电网作为直接面向电力用户的关键环节,其中的动态无功优化问题对于我国电力系统的经济安全运行,以及对用户供电显得十分必要。本文首先通过分析动态无功补偿的作用机理,指出了动态无功补偿对配电网的意义;其次详细介绍了几种常见的无功补偿装置同步调相机、静止电容器、SVC和SVG/STATCOM,比较了不同装置接入配电网的优缺点,同时分析了常用的无功补偿方法;其次从经济性角度出发,建立了基于调节代价的动态无功优化解耦的数学模型,建立目标函数,应用粒子群算法求解,得出了各个时段下的电容器组投切量;随后,针对目前分布式电源的大规模接入,构建了改进的IEEE33配电网系统,提出LCPI电压稳定性指标,基于上节数学模型建立了目标函数,应用粒子群算法求解,得出了各个时段下的电容器组投切量、分布式电源无功输出大小,同时验证了无功优化之后系统电压稳定性有所提高;最后应用MATLAB中GUI模块针对上述模型编写了基于粒子群算法的配电网动态无功优化软件。
[Abstract]:With the development of social economy and the improvement of people's living standard, the demand for high quality electric energy is more and more intense. In recent years, the electric power industry of our country develops very quickly, the distribution network is the key link of facing the electric power user directly, the dynamic reactive power optimization problem is very necessary for the safe operation of the electric power system of our country and the power supply to the user. By analyzing the mechanism of dynamic reactive power compensation, the significance of dynamic reactive power compensation to distribution network is pointed out in this paper. Static capacitor SVC and SVG / STATCOMare compared the advantages and disadvantages of different devices to the distribution network, and analyzed the common reactive power compensation methods. Secondly, from the economic point of view, the mathematical model of dynamic reactive power optimization decoupling based on regulating cost is established. The objective function is established, and particle swarm optimization algorithm is used to solve the problem, and the switching capacity of capacitor banks is obtained in each time period. Then, an improved IEEE33 distribution network system is constructed for the large-scale access of distributed power supply, and the LCPI voltage stability index is proposed. Based on the mathematical model of the previous section, the objective function is established, and the particle swarm optimization algorithm is used to solve the problem. The switching capacity of capacitor banks and the reactive power output of distributed power supply are obtained. At the same time, it is verified that the system voltage stability has been improved after reactive power optimization. Finally, the dynamic reactive power optimization software of distribution network based on particle swarm optimization (PSO) is compiled by GUI module in MATLAB.
【学位授予单位】：华北电力大学(北京)
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM727
本文编号：2164227
[Abstract]:With the development of social economy and the improvement of people's living standard, the demand for high quality electric energy is more and more intense. In recent years, the electric power industry of our country develops very quickly, the distribution network is the key link of facing the electric power user directly, the dynamic reactive power optimization problem is very necessary for the safe operation of the electric power system of our country and the power supply to the user. By analyzing the mechanism of dynamic reactive power compensation, the significance of dynamic reactive power compensation to distribution network is pointed out in this paper. Static capacitor SVC and SVG / STATCOMare compared the advantages and disadvantages of different devices to the distribution network, and analyzed the common reactive power compensation methods. Secondly, from the economic point of view, the mathematical model of dynamic reactive power optimization decoupling based on regulating cost is established. The objective function is established, and particle swarm optimization algorithm is used to solve the problem, and the switching capacity of capacitor banks is obtained in each time period. Then, an improved IEEE33 distribution network system is constructed for the large-scale access of distributed power supply, and the LCPI voltage stability index is proposed. Based on the mathematical model of the previous section, the objective function is established, and the particle swarm optimization algorithm is used to solve the problem. The switching capacity of capacitor banks and the reactive power output of distributed power supply are obtained. At the same time, it is verified that the system voltage stability has been improved after reactive power optimization. Finally, the dynamic reactive power optimization software of distribution network based on particle swarm optimization (PSO) is compiled by GUI module in MATLAB.
【学位授予单位】：华北电力大学(北京)
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM727
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