| 基于不同故障情况的特高压变压器差动保护仿真研究 |
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| 引用本文： | 柳维衡,郑涛.基于不同故障情况的特高压变压器差动保护仿真研究[J].现代电力,2010,27(1):12-16. |
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| 作者姓名： | 柳维衡 郑涛 |
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| 作者单位： | 1. 电力系统保护与动态安全监控教育部重点实验室(华北电力大学),北京,102206
2. 华北电力大学,北京,102206 |
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| 摘 要： | 介绍了当前中国在建的特高压变压器的结构和参数,并建立了相应的动态仿真模型。根据特高压变压器的结构和运行特性,提出了针对特高压容量大,分体式结构的差动保护配置。通过模拟不同故障情况下差动保护的反应,对各种差动保护的灵敏性进行分析比较。仿真结果表明单独对调压绕组和补偿绕组分别配置差动保护能提高其匝间故障的灵敏性,故障分量差动保护可以提高重负荷情况下变压器内部发生轻微故障的灵敏性,分侧差动保护则可以避免励磁涌流和过励磁的影响,零序差动保护可以提高单相接地故障保护的灵敏性,尤其是接地点离中性点很近的轻微接地故障。
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| 关 键 词： | 特高压变压器 完全差动保护 故障分量差动保护 分侧差动保护 零序差动保护 |
Simulation Research on UHV Transformer DIFP Based on Different Fault Conditions |
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| Liu Weiheng,Zheng Tao.Simulation Research on UHV Transformer DIFP Based on Different Fault Conditions[J].Modern Electric Power,2010,27(1):12-16. |
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| Authors: | Liu Weiheng Zheng Tao |
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| Affiliation: | Liu Weiheng,Zheng Tao (1.Key Laboratory of Power System Protection , Dynamic Security Monitoring , Control of Ministry of Education,North China Electric Power University,Beijing 102206,China) |
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| Abstract: | The actual configuration and parameters of UHV transmission under construction in China are introduced,and the corresponding dynamic simulation experiment model is established.According to the structure and operation characteristics of the 1 000kV UHV transformer,the differential protection scheme is proposed based on the divided structure and large capacity of UHV transformer.Simulation results show that when voltage regulation winding and voltage compensation winding inter-turn faults happen,individual DI... |
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| Keywords: | UHV transformer complete DIFP fault component DIFP split-side DIFP zero-sequence DIFP |
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