兼顾连锁跳闸免疫和端部故障响应能力的距离保护Ⅲ段自适应椭圆动作特性研究
TM77; 针对潮流转移引发距离保护Ⅲ段误动作的问题,提出了一种基于椭圆动作特性的保护自适应调节优化策略.分析了现有透镜形判据自适应调节所存在的问题,针对性地设计了椭圆形判据,并探讨了其整定原则.理论分析及基于PSCAD的仿真结果表明,所提策略可有效规避以距离保护Ⅲ段为代表的后备保护应对潮流转移工况时可能存在的误动作风险,且在区内短路故障时允许保护正确动作.相较于现有的自适应调节距离保护Ⅲ段保护判据,采用所提判据的保护抗过渡电阻能力得到了有效恢复....
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| Published in | 电力自动化设备 Vol. 44; no. 11; pp. 217 - 224 |
|---|---|
| Main Authors | , , , , , , , |
| Format | Journal Article |
| Language | Chinese |
| Published |
国家电网有限公司华中分部,湖北 武汉 430077
01.11.2024
柳焕章劳模创新工作室,湖北 武汉 430077%华中科技大学 强电磁工程与新技术国家重点实验室,湖北 武汉 430074%三峡大学 电气与新能源学院,湖北 宜昌,443002 |
| Subjects | |
| Online Access | Get full text |
| ISSN | 1006-6047 |
| DOI | 10.16081/j.epae.202408001 |
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| Abstract | TM77; 针对潮流转移引发距离保护Ⅲ段误动作的问题,提出了一种基于椭圆动作特性的保护自适应调节优化策略.分析了现有透镜形判据自适应调节所存在的问题,针对性地设计了椭圆形判据,并探讨了其整定原则.理论分析及基于PSCAD的仿真结果表明,所提策略可有效规避以距离保护Ⅲ段为代表的后备保护应对潮流转移工况时可能存在的误动作风险,且在区内短路故障时允许保护正确动作.相较于现有的自适应调节距离保护Ⅲ段保护判据,采用所提判据的保护抗过渡电阻能力得到了有效恢复. |
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| AbstractList | TM77; 针对潮流转移引发距离保护Ⅲ段误动作的问题,提出了一种基于椭圆动作特性的保护自适应调节优化策略.分析了现有透镜形判据自适应调节所存在的问题,针对性地设计了椭圆形判据,并探讨了其整定原则.理论分析及基于PSCAD的仿真结果表明,所提策略可有效规避以距离保护Ⅲ段为代表的后备保护应对潮流转移工况时可能存在的误动作风险,且在区内短路故障时允许保护正确动作.相较于现有的自适应调节距离保护Ⅲ段保护判据,采用所提判据的保护抗过渡电阻能力得到了有效恢复. |
| Abstract_FL | Aiming at the problem of mal-operation of distance protection zone Ⅲ caused by power flow transfer,a protection self-adaptive adjustment optimization strategy based on ellipse operation characteristics is proposed.The problems of self-adaptive adjustment of the existing lens-type criterion are analyzed,the ellipse criterion is designed in a targeted manner,and its setting principle is discussed.Theoretical analysis and simulative results based on PSCAD show that the proposed strategy can effectively avoid the possible mal-operation risk of the backup protection represented by distance protection zone Ⅲ during power flow transfer,and allow the correct operation in the case of real internal short circuit fault.Compared with the existing self-adaptive adjustment criterion for the distance protection zone Ⅲ,the ability of withstanding transition resistance of the protection adopting proposed criterion has been effectively restored. |
| Author | 刘阳 张今 林湘宁 李正天 魏繁荣 翁汉琍 吕东晓 冀吉豪 |
| AuthorAffiliation | 国家电网有限公司华中分部,湖北 武汉 430077;柳焕章劳模创新工作室,湖北 武汉 430077%华中科技大学 强电磁工程与新技术国家重点实验室,湖北 武汉 430074%三峡大学 电气与新能源学院,湖北 宜昌,443002 |
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| Author_FL | LIU Yang ZHANG Jin LIN Xiangning WENG Hanli LI Zhengtian Lü Dongxiao JI Jihao WEI Fanrong |
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| Keywords | 距离保护Ⅲ段 继电保护 椭圆动作特性 power flow trans-fer elliptical operation characteristics cascading trip backup protection self-adaptive adjustment 后备保护 连锁跳闸 潮流转移 relay protection distance protection zone 自适应调节 |
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| PublicationTitle | 电力自动化设备 |
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| Publisher | 国家电网有限公司华中分部,湖北 武汉 430077 柳焕章劳模创新工作室,湖北 武汉 430077%华中科技大学 强电磁工程与新技术国家重点实验室,湖北 武汉 430074%三峡大学 电气与新能源学院,湖北 宜昌,443002 |
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| Title | 兼顾连锁跳闸免疫和端部故障响应能力的距离保护Ⅲ段自适应椭圆动作特性研究 |
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