电力系统保护与控制Issue(3)：118-122,5.
基于自定义模型的变压器纵差动保护PSCAD仿真
PSCAD simulation of transformer longitudinal differential protection based on custom model
蔡云峰 1徐洋 1潘琪1
作者信息
- 1. 江苏省电力公司苏州供电公司，江苏 苏州215000
- 折叠
摘要
Abstract
In order to reduce the error of the design of relay protection, setting calculation of transformer, a method is proposed based on the combination of internal leakage reactance parameters calculation and short-circuit impedance parameters determination. By using curve fitting technique, this method obtains the exact equivalent short circuit impedance parameters of the transformer in different fault conditions. On this basis, it establishes the custom model of the short-circuit impedance of primary protection and backup protection combining the real digital transformer protection device in the PSCAD/EMTDC by using FORTRAN language interface technology. Besides, using the equivalent system model, the short circuit to ground short circuit, inter-turn short circuit, phase to phase short circuit within the different positions of the transformer coil are simulated and calculated. The results show that, using the curve fitting method model and custom element can accurately simulate and analyze the internal fault of transformer and relay protection action, which provides a scientific basis for the design of relay protection principle and application.关键词
变压器/阻抗/差动保护/后备保护/自定义模型/仿真Key words
power transformer/impedance/differential protection/user-defined modeling/simulation分类
信息技术与安全科学引用本文复制引用
蔡云峰,徐洋,潘琪..基于自定义模型的变压器纵差动保护PSCAD仿真[J].电力系统保护与控制,2015,(3):118-122,5.
