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考虑电动汽车不确定性的配电网软联络开关优化配置 被引量:7

SNOP allocation based on consideration of the uncertainty in active distribution systems
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摘要 电动汽车的接入对配电网的安全稳定运行带来了根本性的影响,利用直流软联络(SNOP)代替联络/分段开关,不仅能够提高有源配电网的潮流控制能力和实现双端馈线的电气解耦,而且能够较准确调控两端所连馈线功率和提高有源配电网运行的灵活性。该文首先分析电动汽车及其负荷的不确定性,并基于二者的时序性概率出力模型,综合考虑系统网损和电动汽车的充放电功率特性,构建多目标的SNOP最优配置模型,然后提出相应的求解算法。最后,利用IEEE 33节点系统验证数学模型和求解算法的可行性和有效性。该文的理论分析结果可为计及电动汽车接入的配电网损耗计算分析提供借鉴作用。 Large scale integrations of EVs brings challenges on the security operation of the distribution networks.The Soft Normally Open Point(SNOP)is commonly utilized to replace tie-switch.It not only improves the power flow of both two lines,but also provides the accurate controlling for power flows of the feeders connecting to the SNOP and increase the control flexibility of whole systems.In this paper,sequential probability output models of EVs and loads are established based on the considerations of uncertain characteristics.Furthermore,a multi-objective model of the optimal allocation for SNOPs is proposed.Meanwhile,a corresponding solution is also presented by considering the system losses and uncertain outputs of EVs.Simulation results of an IEEE 33 nodes system are presented to verify the feasibility and validity of the proposed model and algorithm.
作者 邢金 王婧 叶辛 石晓欢 李冰冰 宋季冬 XING Jin;WANG Jing;YE Xin;SHI Xiaohuan;LI Bingbing;SONG Jidong(State Grid Jibei Electirc Power Co., Ltd., Beijing 100032, China;Guodianhuayan(Beijing) Electric Power Consulting Co., Ltd., Beijing 102200, China)
出处 《电力科学与技术学报》 CAS 北大核心 2020年第2期46-54,共9页 Journal of Electric Power Science And Technology
关键词 不确定性 软联络 电动汽车 优化配置 uncertainty soft normally open point(SNOP) distribution generation optimal allocation
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