含高渗透率分布式光伏的主动配电网电压分区协调优化控制

随着高渗透率分布式光伏的接入,配电网的过电压问题愈发严重,传统集中式的电压优化控制方法因为变量维数过多而无法满足控制时间的要求.基于此,该文提出一种主动配电网电压分区协调优化控制的方法.首先提出无功/有功分区质量函数作为分区指标,并以网络快速分区算法对配电网进行无功、有功分区.在无功分区内,以无功调节量最少为目标建立光...

VOLTAGE PARTITION COORDINATED OPTIMIZATION CONTROL OF ACTIVE DISTRIBUTION NETWORK OF HIGH PENETRATION DISTRIBUTED PVs

The higher the penetration level of PVs in distribution networks, the greater the overvoltage issues would be. Due to the extremely high dimension of control variables, the traditional centralized control methods are getting too complex, which would barely satisfy the operational requirements of future active distribution networks. In order to address this crucial issue, this paper presents a voltage control method based on a network partitioning technique. A community detection algorithm based on a reactive/active quality function is introduced to divide a distribution network into reactive/active power sub-networks. For the reactive power sub-networks, a second-order cone programming （SOCP） based model for PV inverters is established with the objective of minimizing the regulated reactive power. For the active power sub-networks, a SOCP based model is also proposed for PV inverters with the objective of minimizing the curtailed active power of PVs. The proposed models in each sub-networks are solved by a parallel way. After the optimization, the results of the optimization are exchanged among each sub-network, and the constraints in each sub-network are then updated accordingly. A new optimization process is then started until the stopping criterion is met. Finally, an actual feeder is employed to verify the feasibility and effectiveness of the proposed approach.