电力系统保护与控制Issue(8)：140-145,6.
变压器匝间短路建模及其实际应用
Transformer inter-turn short circuit modeling and its application
杨理才 1孙结中 1刘蔚 2周卫 1秦楷1
作者信息
- 1. 广西电网公司电力科学研究院，广西 南宁 530023
- 2. 南方电网科学研究院，广东 广州510080
- 折叠
摘要
Abstract
Aiming at transformer inter-turn short problem, this paper presents an idea which is equivalent the shorted winding to two different windings. The modeling of equivalence is proposed with the low voltage side inter-turn short of three windings as an example. First, the shorted three-winding transformer is equivalent to a four-winding transformer. Then a formula in the middle and low voltage sides is derived, according to which shorted information is calculated and the decrease of middle and low voltage sides is deduced and the latter decreases more seriously. The model is applied successfully to the simulation and analysis of the Guangxi power grid 220 kV transformer inter-turn short circuit by MATLAB, the simulation curve and result of analysis are coincide with examination results and recorded curve, which verify the correctness of the model.关键词
匝间短路/等效建模/事故分析/Matlab仿真/故障录波Key words
inter-turn short circuit/equivalent modeling/fault analysis/MATLAB simulation/fault recorder分类
信息技术与安全科学引用本文复制引用
杨理才,孙结中,刘蔚,周卫,秦楷..变压器匝间短路建模及其实际应用[J].电力系统保护与控制,2014,(8):140-145,6.
