新型换流变压器建模及故障计算  

Modeling and Faults Calculation for a New Converter Transformer

作　　者：张杰[1] 罗隆福[1] 张志文[1] 李勇[1] 李季[1] 赵志宇[1] 

机构地区：[1]湖南大学电气与信息工程学院,长沙410082

出　　处：《高电压技术》2009年第12期2983-2988,共6页High Voltage Engineering

基　　金：湖南省重大科技专项(06GK1003-1)~~

摘　　要：新型换流变压器建模和故障计算是新型换流变压器运行特性研究及继电保护、故障诊断的基础。为改进传统变压器数学模型,采用互感消去法建立了消去互感后的新型换流变压器等值电路,并根据等值电路建立了新型换流变压器数学模型。基于所建立的数学模型,采用拓扑描述串和故障等效处理技术来计算新型换流变压器的各种故障。仿真结果验证了所建立的新型换流变压器模型和故障计算结果的正确性和精确性,能用于解决实际工程中新型换流变压器建模及故障计算问题。Modeling and faults calculation in the new converter transformer are the bases of research on operating characteristics, relay protection and fault diagnosis of the new converter transformer. We adopted the method named mutual inductance elimination to establish the equivalent circuit of the new converter transformer after eliminating mutual inductance, accordingly, the mathematical model of the new converter transformer was obtained. Based on the mathematical model, we adopted topological description series and the technique of fault equivalence disposal to calculate all kinds of faults of the new converter transformer. Simulation results verify that the modeling and faults calculation for the new converter transformer are correct and accurate, and they can solve the problems of modeling and faults calculation in the new converter transformer in actual projects.

关 键 词：新型换流变压器 数学模型 拓扑描述串 故障计算 互感消去 等效处理 

分 类 号：TM42[电气工程—电器]