DSTATCOM配置与整定的多目标协调优化

配电网具有供电半径长、结构复杂的固有特征,强波动性负荷以及分布式电源的增加进一步加剧了配电网潮流的不确定性,恶化配电网的电压质量,因此有必要合理配置DSTATCOM以提升配电网经济效益、保证电压质量,进而提高对分布式电源的消纳能力。提出一种配电网DSTATCOM配置与整定的多目标协调优化方法,在优化配置过程中考虑DSTATCOM的运行与参数整定问题。优化模型涉及系统网损电量、设备总投资、设备闲置率以及DG弃发电量等多个目标,基于NSGA-II求取帕累托解集并运用带权理想点法进行决策,其突出特点在于能够综合考虑DSTATCOM的配置与运行,通过IEEE33节点算例验证了该方法的有效性。

Multi objective coordinated optimization of DSTATCOM configuration and setting in distribution network

The distribution network has inherent characteristics of long supply radius and complex structure.With the increasing of strong wave from load and DCs,the uncertainty of distribution network power flow is also increased and might causes the voltage quality deterioration in the distribution network.Therefore,it is necessary to rationally configure the DSTATCOM to improve the economic benefit of distribution network,ensure the voltage quality,and improve the DG accommodation.In this paper,a multi-objective coordinated optimization method are proposed for the DSTATCOM configuration and its setting in distribution networks,which considers the operation of DSTATCOM and the parameters setting problem in the process of optimal configuration.For distribution networks with DG.the optimization model of target system involves losses,a total investment of equipment,equipment idle rate and abandoned power generation of DG.The Pareto solution sets are obtained based on the NSGA II,and the weighted ideal point method is employed for decision-making.The outstanding characteristic of those methods is that it considers the configuration and operation of the DSTATCOM synthetically and the proposed method is verified by the example of IEEE33 bus sample system.