| 特高压分布电容对电流差动保护的影响分析及对策 |
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| 引用本文： | 宋璇坤,申洪明,黄少锋,韩柳,肖智宏.特高压分布电容对电流差动保护的影响分析及对策[J].电力自动化设备,2018,38(1). |
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| 作者姓名： | 宋璇坤 申洪明 黄少锋 韩柳 肖智宏 |
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| 作者单位： | 国网经济技术研究院有限公司，北京 102209,国网经济技术研究院有限公司，北京 102209; 华北电力大学 新能源电力系统国家重点实验室，北京 102206,华北电力大学 新能源电力系统国家重点实验室，北京 102206,国网经济技术研究院有限公司，北京 102209,国网经济技术研究院有限公司，北京 102209 |
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| 摘 要： | 在全球能源互联网的背景下,特高压输电技术迅速发展。特高压线路的分布电容对电流差动保护会产生不利影响,因此详细分析了分布电容对电流差动保护影响机理,并进一步分析了不同故障形式下动作电流的相角特征,进而提出了基于动作电流相角信息的电流差动保护动作逻辑。仿真结果验证了所提逻辑可以有效避免分布电容对差动保护产生影响。
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| 关 键 词： | 能源互联网 特高压输电 分布电容 继电保护 电流差动保护 相角 |
Effect of distributed capacitance on differential current protection and relevant countermeasures |
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| SONG Xuankun,SHEN Hongming,HUANG Shaofeng,HAN Liu and XIAO Zhihong.Effect of distributed capacitance on differential current protection and relevant countermeasures[J].Electric Power Automation Equipment,2018,38(1). |
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| Authors: | SONG Xuankun SHEN Hongming HUANG Shaofeng HAN Liu and XIAO Zhihong |
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| Affiliation: | State Grid Economic and Technological Research Institute Co.,Ltd.,Beijing 102209, China,State Grid Economic and Technological Research Institute Co.,Ltd.,Beijing 102209, China; State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, China,State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, China,State Grid Economic and Technological Research Institute Co.,Ltd.,Beijing 102209, China and State Grid Economic and Technological Research Institute Co.,Ltd.,Beijing 102209, China |
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| Abstract: | The UHV(Ultra-High Voltage) power transmission technology is rapidly developing under the background of global energy internet. Since the distributed capacitance in the UHV power transmission line has a negative effect on the differential current protection, the effect is analyzed in detail as well as the phase angle information of operating current under different faults, based on which a kind of operating logic based on the phase angle information of operating current is proposed for differential current protection. The simulative results verify that the proposed logic can effectively avoid the effect of distributed capacitance on the differential current protection. |
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| Keywords: | energy internet UHV power transmission distributed capacitance relay protection differential current protection phase angle |
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