电力系统自动化Issue(18)：53-57,5.DOI:10.7500/AEPS20131205004
处理不接地配电网三相潮流不收敛的变压器建模新方法
A Novel Transformer Modeling Method for Overcoming Divergence of Three-phase Power Flow in Ungrounded Power Distribution Networks
摘要
Abstract
In ungrounded distribution networks,the three-phase power flow may diverge because the admittance matrix of transformer is singular.With a given reference for zero-sequence voltage,this paper proposes a novel method for modeling three-phase transformers able to overcome the singularity.The transformer admittance matrix is augmented by adding a constraint of the voltage on the secondary side,certain that the value of the constant zero-sequence voltage reference will not affect the calculated current in the medium voltage (MV) network or the power flow in other segments.The proposed model can be used in the popular three-phase power flows such as backward/forward sweep (BFS) and implicit ZBus algorithms. Numerical tests show the correctness of the proposed method.关键词
配电网/三相潮流计算/导纳阵/变压器/建模Key words
distribution network/three-phase power flow calculation/admittance matrix/power transformers/modeling引用本文复制引用
高亚静,苗宏佳,吴文传,巨云涛,李飞..处理不接地配电网三相潮流不收敛的变压器建模新方法[J].电力系统自动化,2014,(18):53-57,5.基金项目
国家科技支撑计划资助项目(2013BAA01B01) （2013BAA01B01）
黔科重大专项资助项目(〔2012〕6022)。@@@@This work is supported by Key Technologies Research and Development Program of China (No.2013BAA01B01) and Important Guizhou Science & Technology Specific Projects(No.(2012)6022) （〔2012〕6022）
