考虑有源配电网运行灵活性的智能储能软开关优化规划  被引量:20

Optimal planning of soft open point integrated with energy storage system considering operation flexibility of active distribution network

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作  者:黄子桐 徐永海 叶兴杰 HUANG Zitong;XU Yonghai;YE Xingjie(State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources(North China Electric Power University),Beijing 102206,China)

机构地区:[1]新能源电力系统国家重点实验室(华北电力大学),北京102206

出  处:《电力工程技术》2023年第1期143-153,共11页Electric Power Engineering Technology

基  金:新能源电力系统国家重点实验室(华北电力大学)自主研究课题(LAPS202124)资助。

摘  要:当前大规模风光出力和负荷的波动性使得配电网对运行灵活性的要求不断增加。智能储能软开关(soft open point integrated with energy storage system,ESOP)具有智能软开关的功率灵活调节能力及储能系统的功率储存能力,可以提升配电网运行的灵活性和经济性。文中首先对ESOP的原理和数学模型进行阐述;然后,从节点和网架灵活性资源的调整能力出发提出净负荷调节量和支路负荷裕度,将其作为配电网灵活性的评价指标,将配电网运行成本及ESOP规划建设成本作为经济性指标,从而建立以含ESOP的配电网灵活经济运行为目标函数的优化规划模型;最后,采用二阶锥规划算法对模型进行求解。通过改进的IEEE 33节点系统进行算例验证,结果表明所提出的灵活性指标可准确量化配电网运行灵活性,优化规划模型可实现配电网经济灵活运行。At present,the fluctuation of large-scale wind-photovoltaic power output and load increases the demand for operational flexibility in the distribution network.Soft open point integrated with energy storage system(ESOP)contains both the flexible power regulation ability of soft open point and the power storage ability of energy storage system,which can improve the operational flexibility and economy of the distribution network.Firstly,the principle and mathematical model of ESOP are elaborated.Then,two distribution network flexibility evaluation indexes including net load regulation and branch load margin are proposed from the perspective of node and grid flexibility resources respectively,and the distribution network operating costs and ESOP planning and construction costs are proposed as the economic indicators.After that,an optimal planning model with the flexible and economic operation of the distribution network with ESOP as an objective function is established.Finally,the model is solved by the second-order cone programming algorithm.Through the simulation of the modified IEEE 33-bus system,the results show that the proposed flexibility evaluation indicators can accurately quantify the operational flexibility of the distribution network,and the proposed optimal planning model can realize the operational flexibility and economy distribution network.

关 键 词:智能储能软开关(ESOP) 有源配电网 灵活性 配电网规划 经济运行 二阶锥规划 

分 类 号:TM715[电气工程—电力系统及自动化]

 

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