混合式直流断路器模型及其操作暂态特性研究

发布时间：2018-01-03 23:07

本文关键词：混合式直流断路器模型及其操作暂态特性研究　出处：《中国电机工程学报》2016年01期 　论文类型：期刊论文

【摘要】：该文围绕±10 kV柔性直流系统中的自然换流型混合式直流断路器操作暂态特性进行分析并建模仿真。首先简要分析直流断路器拓扑结构,提出一种基于绝缘栅双极型晶体管的自然换流混合式断路器。随后设计了断路器的动态模型,并整定了动作时序。接着讨论了断路器参数变化和故障特性对断路器分断性能的影响,利用PSCAD/EMTDC仿真软件分析了极间短路故障时直流断路器的暂态特性。仿真结果表明,电流转移过程能否正常进行对断路器开断有很大的影响,转移回路的杂散电感与电流转移时间接近线性关系,金属氧化物压敏电阻吸收电流持续时间对断路器成功开断故障有很大影响。此外,该文还设计了电流转移实验验证研究结果的正确性。研究结果可用于指导直流配电系统和断路器设计和电磁暂态分析。
[Abstract]:This paper focuses on the 10 kV flexible DC system in natural change pattern of DC hybrid circuit breaker transient characteristics analysis and simulation. The first is a brief analysis of DC circuit breaker topology, this paper puts forward a natural commutation hybrid circuit breaker based on insulated gate bipolar transistor. Then the design of dynamic model of breaker. And setting the timing. Then it discusses the parameters of circuit breaker fault characteristics change and effect on the performance of the circuit breaker, using PSCAD/EMTDC simulation software to analysis the transient characteristics of DC circuit breaker short circuit fault. The simulation result shows that the current transfer process can be normal to the circuit breaker has a great influence transfer, the stray inductance and the current loop transfer time close to the linear relationship between the metal oxide varistor absorbs current duration of circuit breaker successfully breaking fault has a great influence. In addition, a current transfer experiment is designed to verify the correctness of the research results. The research results can be used to guide the design and electromagnetic transient analysis of DC distribution system and circuit breaker.

【作者单位】：电力系统及发电设备控制和仿真国家重点实验室(清华大学电机系);深圳供电局有限公司;南方电网科学研究院;
【基金】：国家863高技术研究发展计划项目(2013AA050104)~~
【分类号】：TM561
【正文快照】： 管的自然换流混合式断路器。随后设计了断路器的动态模型,并整定了动作时序。接着讨论了断路器参数变化和故障特性对断路器分断性能的影响,利用PSCAD/EMTDC仿真软件分析了极间短路故障时直流断路器的暂态特性。仿真结果表明,电流转移过程能否正常进行对断路器开断有很大的影响

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