含蓄热式电采暖接入的配网承载能力评估模型  

Carrying Capacity Evaluation Model of Distribution Network Containing Regenerative Electric Heating Access

作　　者：周云海[1] 宋德璟 贾倩 辛月杰 ZHOU Yunhai;SONG Dejing;JIA Qian;XIN Yuejie(College of Electrical Engineering and New Energy,China Three Gorges University,Yichang 443000,Hubei Province,China)

机构地区：[1]三峡大学电气与新能源学院,湖北省宜昌市443000

出　　处：《现代电力》2023年第5期797-806,共10页Modern Electric Power

基　　金：国家重点研发计划项目(2019YFB1505400)。

摘　　要：针对现有配网结构下蓄热式电采暖接入规模的评估问题,提出了1种含蓄热式电采暖接入的配网承载能力评估方法。首先,分析热负荷的主要影响因素与蓄热式电采暖运行特性,建立蓄热式电采暖系统模型;同时,建立配网可利用低谷电量模型;然后,以供热面积最大为目标,结合配网低谷电量约束与机会约束条件,构建含蓄热式电采暖的配网承载能力评估模型;最后将评估模型应用在河北省某农村配电网中,对比不同评估模型、机会约束置信度以及接入点对配网承载能力的影响。结果表明:所提评估模型可有效增大配网可承载的供热面积,提高配网资源利用率,实现当前配网结构下蓄热式电采暖接入规模的合理评估。Aiming at the problem of evaluating the access scale of regenerative electric heating under the existing distribution network structure,a method for evaluating the carrying capacity of distribution network with regenerative electric heating was proposed.Firstly,the main influencing factors of heat load and operation characteristics of regenerative electric heating were analyzed,and the regenerative electric heating system model was established.At the same time,the distribution network available valley power model was established.Then,with the maximum heating area as the goal,combined with the available low-valley electricity constraint and chance constraint of the distribution network,the evaluation model of the distribution network carrying capacity of the regenerative electric heating was constructed.Finally,the evaluation model was applied to a rural distribution network in Hebei Province,and the impacts of different evaluation models,confidence of chance constraints and access points on the carrying capacity of distribution network were compared.The results show that the proposed evaluation model can effectively increase the heating area that the distribution network can carry,improve the utilization rate of distribution network resources,and realize the reasonable evaluation of the access scale of regenerative electric heating in the current distribution network structure.

关 键 词：蓄热式电采暖 低谷电量 机会约束 承载能力 

分 类 号：TM715[电气工程—电力系统及自动化]