| 基于电压型故障特征量的发电机机端断路器非全相保护 |
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| 引用本文： | 李荷婷,桂林,贺儒飞,陈俊.基于电压型故障特征量的发电机机端断路器非全相保护[J].电力系统自动化,2017,41(1):140-144. |
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| 作者姓名： | 李荷婷 桂林 贺儒飞 陈俊 |
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| 作者单位： | 清华大学电机工程与应用电子技术系, 北京市 100084; 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, 北京市 100084,清华大学电机工程与应用电子技术系, 北京市 100084; 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, 北京市 100084,广州蓄能水电厂, 广东省广州市 510950,南京南瑞继保工程技术有限公司, 江苏省南京市 211102; 智能电网保护和运行控制国家重点实验室, 江苏省南京市 211106 |
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| 摘 要： | 针对广州蓄能水电厂A厂在轻载发电工况下,发电机机端断路器(GCB)发生单相断线时,相关保护未能及时切除故障导致事故扩大的现状,利用对称分量法对GCB非全相故障进行了理论分析,并运用PSCAD软件搭建了GCB非全相故障的动态仿真计算模型。根据故障特征提出了以GCB两侧基波零序电压的相角差作为GCB非全相保护新型判据的构想,通过动模实验验证了仿真计算模型的正确性与GCB非全相保护新型判据的合理性。
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| 关 键 词： | 发电机机端断路器 非全相保护 保护判据 故障分析 |
| 收稿时间： | 2016/1/21 0:00:00 |
| 修稿时间： | 2016/12/1 0:00:00 |
Voltage Features Based Open-phase Protection of Generator Circuit Breaker |
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| LI Heting,GUI Lin,HE Rufei and CHEN Jun.Voltage Features Based Open-phase Protection of Generator Circuit Breaker[J].Automation of Electric Power Systems,2017,41(1):140-144. |
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| Authors: | LI Heting GUI Lin HE Rufei and CHEN Jun |
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| Affiliation: | Department of Electrical Engineering, Tsinghua University, Beijing 100084, China; State Key Laboratory of Control and Simulation of Power System and Generation Equipments, Tsinghua University, Beijing 100084, China,Department of Electrical Engineering, Tsinghua University, Beijing 100084, China; State Key Laboratory of Control and Simulation of Power System and Generation Equipments, Tsinghua University, Beijing 100084, China,Guangzhou Pumped Storage Power Station, Guangzhou 510950, China and Nari-Relays Electric Co. Ltd., Nanjing 211102, China; State Key Laboratory of Smart Grid Protection and Control, Nanjing 211106, China |
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| Abstract: | In view of the failure of Guangzhou Pumped Storage Power Station A(GPSPSA)generator circuit breaker(GCB)to shave the fault during single-phase disconnection that led to expansion of the accident when the generator was running under low load, the symmetrical component method is adopted to analyze the GCB open-phase fault. The simulation model for the GCB open-phase fault is built using the PSCAD software. According to the fault features, the phase angle difference of the zero sequence fundamental voltages between the two sides of GCB is assumed to be the new criterion for GCB open-phase protection. Through the experiment of the dynamic simulation system for the GCB open-phase fault, the simulation model is verified to be correct and the new criterion for the GCB open-phase protection is rational. |
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| Keywords: | generator circuit breaker(GCB) open-phase protection protection criterion fault analysis |
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