基于数字孪生的配电网潮流网络模型构建研究

Research on power flow network model construction of distribution network based on digital twin

由于配电网中导线重复接地对潮流计算收敛性的影响,无法获取精准配电网潮流求解结果,为此,提出了基于数字孪生的配电网潮流网络模型构建研究。根据配电网数字孪生技术架构,计算配电网鲁棒最优潮流。依据配电网对电机出力和负荷需求,构建基于鲁棒优化的鲁棒约束函数,引入保守度调节参数使调控安全性与经济性达到平衡状态。分析配电网潮流网络拓扑结构,结合预设的特征数据类型与特征关联信息之间关系,确定配电网潮流方向。结合数字孪生技术迭代处理注入电压,完成数字孪生潮流网络模型构建。实验结果表明,该模型收敛次数较多,最短收敛时长为1.30 s,具有良好的收敛性。

Due to the influence of repeated grounding of conductors in the distribution network on the convergence of the power flow calculation,it is impossible to obtain accurate power flow solution results in the distribution network.Therefore,a research on the construction of power flow network model of distribution network based on digital twin is proposed.According to the digital twin technology architecture of the distribution network,the robust optimal power flow of the distribution network is calculated.According to the motor output and load requirements of the distribution network,a robust constraint function based on robust optimization is constructed,and a conservative adjustment parameter is introduced to achieve a balanced state of regulation safety and economy.The topology structure of the power flow network of the distribution network is analyzed,and the relationship between the preset feature data types and the feature associated information is combined to determine the power flow direction of the distribution network.Combined with digital twin technology,iteratively processes the injected voltage to complete the construction of the digital twin power flow network model.The experimental results show that the model has many convergence times,the shortest convergence time is 1.30 s,and it has good convergence.