摘要
为保证无功规划方案能够适应风机出力和负荷的随机变化、电网在所有负荷水平都能安全且经济的运行,本文计及风机出力和负荷的随机性,在不同负荷水平下研究了含风电机组的配电网无功规划问题。以不同负荷水平下系统支出费用最小为目标,建立了配电网无功规划数学模型。通过三点估计法将概率潮流计算转变为采样点处的确定潮流计算,来处理模型中的不确定因数。针对粒子群算法易陷入局部最优的缺陷,采用自适应混沌变异粒子群算法(ACMPSO)用于模型的求解。在已知无功补偿装置安装位置但安装容量不确定的情况下,确定各待补偿节点的最优容量配置。通过对改进的IEEE33节点配电网的仿真测试,验证了所提出的无功规划策略的有效性。
In order to ensure that the reactive power planning scheme could adapt to the random changes of wind turbine output and load,and that the power grid could work safely and economically at all load levels,in this paper the randomness of wind turbine output and load was considered,and the reactive power planning of distribution network with wind turbines was studied at different load levels.Based on the minimum system expenditure under different load levels,the mathematical model of reactive power planning for distribution network was established.The three-point estimation method was used to transform the probabilistic power flow calculation into the determined power flow calculation at the sampling point to process the uncertainty factor in the model.Aiming at the defect that particle swarm optimization algorithm is easy to fall into local optimum,the adaptive chaotic mutation particle swarm optimization(ACMPSO)algorithm was used to solve the model.In the case where the reactive power compensation device installation position was known but the installation capacity was uncertain,the optimal capacity configuration of each bus to be compensated was determined.The effectiveness of the proposed reactive power planning strategy was verified by simulation test of the improved IEEE33 bus distribution network.
作者
文天舒
马平
董跃哲
WEN Tianshu;MA Ping;DONG Yuezhe(College of Electrical Engineering,Qingdao University,Qingdao 266071,China)
出处
《青岛农业大学学报（自然科学版）》
2020年第1期53-59,共7页
Journal of Qingdao Agricultural University(Natural Science)
