基于分布式新能源与配网网络重构的降损技术

Loss Reduction Technology Based on Distributed New Energy and Distribution Network Reconstruction

考虑分布式新能源出力随机性对调控策略执行效果的影响,研究了基于电压风险评估和主动重构的日前调度技术。基于光伏出力预测和负荷预测,以电压安全概率风险最小为目标,以开合联络开关为控制变量,应用二阶锥松弛过的Distflow潮流模型进行求解,获取电压安全概率风险最小的配网重构方案。通过对IEEE 33节点配网进行算例分析,仿真结果验证了所提基于电压风险评估与主动重构的日前降损策略的可行性。

Considering the influence of the randomness of distributed renewable energy output on the implementation effect of the control strategy,the day-ahead scheduling technology based on voltage risk assessment and active reconstruction was studied.Based on the photo-voltaic output prediction and load prediction,this paper takes the minimum probability risk of voltage safety as the goal,and the opening and closing contact switches as control variable.A second-order cone relaxations Distflow flow model was applied to solve and obtain the distri-bution network reconstruction plan with the minimum voltage safety probability risk.Through the analysis of the IEEE 33 node distribution network,the simulation results verify the feasibility of the proposed day-ahead loss reduction strategy based on voltage risk assessment and active reconstruction.