计及电压分区协调控制策略的分布式光伏接入配电网规划

Planning of Distributed Photovoltaic Access to Distribution Network Considering Voltage Partition Coordination Control Strategy

针对光伏出力与负荷需求的不确定性问题,首先采用同步回代消除法对不同季节不同天气下进行日场景削减,形成12种确定的典型日场景;然后为了兼顾光伏并网时光伏运营商的经济性与配电网的技术性,构建了以光伏运营商年平均净收益最大、配电网平均有功网损最小、配电网平均节点电压偏差最小的多目标双层规划模型,上层优化光伏并网容量,下层运行光伏的电压分区协调控制策略,并采用基于目标相对占优策略的纵横交叉算法(crisscross optimization, CSO)对该模型进行优化求解;最后通过IEEE33系统的仿真分析,验证了该求解算法的有效性和规划方案的优越性.

In order to solve the uncertainty problem of photovoltaic output and load demands, the synchronous generation elimination method is adopted firstly to reduce the daily scenes under the different seasons and weather, and twelve kinds of typical daily scenes are formed. Then, a multi-objective bi-level programming model is constructed to consider the economy of photovoltaic operators and the technology of distribution network while photovoltaic grid is connected. Meanwhile, it should be considered that the annual average net income of photovoltaic operators is the largest and the network loss of the average active power in distribution network is the smallest. Also, the average deviation of node voltage is the smallest. In this proposed model, the photovoltaic grid-connected capacity is optimized in the upper layer and the voltage partition coordinated control strategy of photovoltaic operation is conducted in the lower layer. Furthermore, the algorithm of crisscross optimization(CSO) based on the relative dominance strategy of the target is employed to solve the model optimally. Finally, the effectiveness of the proposed algorithm and the superiority of the planning scheme are verified by the analysis of simulations in the IEEE-33 system.