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高渗透率分布式电源并网的无功电压控制研究

Research on Reactive Power and Voltage Control of Grid Connected with High Permeability
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摘要 为了解决当不同情况下高渗透率分布式电源并入电网时,在传统配电和输电系统中出现一些电压波动较大、网损过高等问题。本文提出一种改进型自适应遗传算法应用在无功电压控制中。首先,采用线性标定的方法对5个最小化问题的目标函数进行标定,加快算法在后期的收敛进程。其次,并采用NSGA-Ⅱ快速非劣支配排序法来求取其中的Pareto前沿解,则多目标问题可化为单目标优化问题。最终可以减少迭代次数,具有很好的全局寻优能力和较快的后期收敛速度,可以使得把最小网损和电压偏差作为目标函数的解多样化且最优。这样高渗透率分布式电源并网条件下的系统电压更稳定,网损减少,从而增强电力系统电能质量可靠性。本文采用把输配电电系统相结合的改进型IEEE30节点模型作为研究对象,探究了输配电系统在含不同渗透率分布式电源下的几个重要指标,其仿真结果证明了本文方法的可行性和有效性。 In order to solve the problems of High voltage fluctuation and high network loss at traditional Transmission and Distribution system when the mass Distributed Generation(DG) are penetrated with various cases. Implementation of Modified Self-adaptive Genetic Algorithm(MSGA) in Voltage and Reactive Power Control(VQC) . First, The linear calibration method is used to calibrate the objective function of 5 minimization problems, and the convergence process of the algorithm is accelerated. Secondly, the fast forward non dominated sorting method of NSGA- II is used to obtain the Pareto frontier solution, then the multi-objective problem can be reduced to a single objective optimization problem. Finally, it can reduce the number of iterations and has good global optimization ability and faster convergence rate.It make the solution of the minimum network loss and voltage deviation as the objective function diverse and optimal. What is proposed to maintain the voltage stability,reliability of the power system and reduce the total power loss in the system. In this paper, the modified IEEE30 node model combining the power transmission and distribution system is taken as the object of study. Several important indexes of transmission and distribution system under distributed power with different permeability are studied .The simulation results show that the self-adaptive genetic algorithm is feasible and effective.
出处 《软件》 2017年第9期51-56,共6页 Software
基金 中国南方电网有限责任公司科技项目(YNKJXM00000358)
关键词 分布式电源 无功电压控制 改进型自适应遗传算法 输配电系统 Distributed Generation Voltage and Reactive Power Control(VQC) Modified Self-Adaptive Genetic Algorithm Transmission and Distribution System
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