摘要
为消除空调与电动汽车等高比例柔性负荷接入配电网形成新的供电瓶颈,提高供电能力,本文提出了考虑高比例空调负荷与电动汽车负荷接入下的配电网供电能力两阶段动态评估模型。第1阶段,在空调代理商和电动汽车有序充电模型的基础上,以统一代理商经济效益最大为目标,进行空调负荷和电动汽车负荷协同优化运行。第2阶段在明确代理商负荷接入前提下,配合网络重构提出配电网供电能力的动态评估模型。采用big-M、二阶锥法等技术将多目标、非线性两阶段评估模型转化为混合整数二阶锥规划模型,并利用CPLEX进行求解。最后,通过IEEE 33节点算例系统验证了所提模型的合理性与实用性。
To eliminate the new power supply bottleneck caused by the connection of high-proportion flexible loads such as air conditioners and electric vehicles(EVs)to distribution network and to improve its load supply capacity(LSC),a two-stage dynamic evaluation model for the LSC of distribution network is proposed,which considers the high-proportion integration of air-conditioning loads and EV charging load(EVCL).At the first stage,based on the model of air-conditioner aggregators and orderly charging EVs,the coordinated and optimal operation of air-conditioner load and EVCL is carried out with the goal of unifying the maximum economic benefit of agents.At the second stage,a dynamic evaluation model for the LSC of distribution network combined with network reconfiguration is proposed under the premise of specifying the connection of agent loads.Then,the nonlinear multi-objective two-stage evaluation model is transformed into a mixed integer second-order cone programming model by technologies such as big-M and second-order cone method,which is further solved using CPLEX.Finally,the rationality and practicability of the proposed model is verified by an IEEE 33-bus example.
作者
汤华奇
TANG Huaqi((Beijing)China Railway Construction Electrification Design and Research Institute,Beijing 100043,China)
出处
《电力系统及其自动化学报》
CSCD
北大核心
2021年第7期128-134,共7页
Proceedings of the CSU-EPSA
关键词
高比例柔性负荷
空调代理商
供电能力
两阶段动态评估
二阶锥规划
high-proportion flexible load
air-conditioning aggregator
load supply capacity(LSC)
two-stage dynamic evaluation
second-order cone programming
