电力系统自动化Issue(19)：48-53,6.DOI:10.7500/AEPS20141229003
考虑电热耦合效应的配电网潮流计算
Calculation of Distribution Network Power Flow Considering Electrothermal Coupling Effect
舒隽 1关睿 1韩冰 2韩珝3
作者信息
- 1. 华北电力大学电气与电子工程学院，北京市 102206
- 2. 中国长江三峡集团公司，北京市 100038
- 3. 华能澜沧江水电股份有限公司，云南省昆明市 650214
- 折叠
摘要
Abstract
Conductor resistance changes with changing conductor temperatures,which shows that power flow is influenced by environmental factors.In consideration of the relationship between line temperature,line resistance and power flow,this paper presents a power flow formulation for distribution network with the electrothermal coupling effect taken into account.In the formulation,line resistance is a variable rather than a constant as is usual with the traditional power flow method.An extended power flow calculation for distribution system based on the normal backward/forward sweep power flow algorithm is proposed to address the computational complexity of the formulation,in which the line thermal balance equation is embedded in the forward sweep,as well as the line temperature,line resistance and power flow are dynamically updated during the process of iteration.Consequently,the power flow calculation for distribution network considering the electrothermal coupling effect is realized briefly and efficiently.Two case studies using an IEEE 14-bus distribution network and a 1 18-bus distribution network show that the electrothermal coupling effect has a profound impact on the power flow,while power flow calculation based on constant resistance may lead to significant errors.关键词
电热耦合/潮流计算/前推回代法/配电网Key words
electrothermal coupling/power flow calculation/backward/forward sweep algorithm/distribution network引用本文复制引用
舒隽,关睿,韩冰,韩珝..考虑电热耦合效应的配电网潮流计算[J].电力系统自动化,2015,(19):48-53,6.
