基于机会约束规划和二层规划的配电网广义电源优化配置

发布时间：2018-04-05 12:49

本文选题：配电网　切入点：广义电源　出处：《电力系统自动化》2014年05期

【摘要】：针对配电网中分布式电源渗透率逐渐提高、有功和无功资源规划分进行的现状,提出了将配电网中能够提供有功或无功功率的电源统称为广义电源的概念。考虑时序性和随机性,对不可控的风力、光伏和负荷建立了分时段多状态模型。以高于置信水平的年费用和运行费用小分别为上、下层规划目标函数,建立了基于机会约束规划的二层规划模型,考虑了分布式电源的无功调节能力以及运行中电源出力随负荷变化的调整,使配电网损耗、电压等指标和目标函数计算更准确。采用分段二进制编码方式和精英保留策略遗传算法对二层模型求解。算例结果表明,有功和无功资源综合配置有利于提高资源利用率,减少年费用;考虑分布式电源无功出力能够充分发挥分布式电源无功控制作用,保证配电网经济安全运行。
[Abstract]:In view of the increasing permeability of distributed generation and the planning of active and reactive power resources in distribution network, the concept of generalized power supply is put forward, which can provide active or reactive power in distribution network.Considering the timing and randomness, the multi-state model of uncontrollable wind, photovoltaic and load is established.A bilevel programming model based on opportunity-constrained programming is established by using the lower level programming objective function and the lower level programming objective function with the annual cost and running cost higher than the confidence level, respectively.The reactive power regulation ability of distributed generation and the adjustment of power output with load in operation are taken into account to make the calculation of distribution network loss voltage and objective function more accurate.Piecewise binary coding and elite retention strategy genetic algorithm are used to solve the two-layer model.The results show that the comprehensive allocation of active and reactive power resources is beneficial to increase the utilization rate of resources and reduce the annual cost, and considering the reactive power output of distributed power generation, it can give full play to the reactive power control role of distributed power supply and ensure the economic and safe operation of distribution network.
【作者单位】：中国农业大学信息与电气工程学院;
【基金】：国家自然科学基金资助项目(51377162) 国家电网公司科技项目(PD71-13-031)~~
【分类号】：TM715

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