工频磁场干扰识别及母线保护防误技术
TM772; 分析工频磁场干扰对母线差动保护的影响,将各条支路上工频磁场干扰电流幅值和相位相似的特征与母线保护装置备用支路多的特点进行结合,通过母线保护装置的备用间隔的电流采样值特征识别工频磁场干扰并得到干扰值.计算补偿干扰电流后的差动电流,并在母线差动保护判据中增加补偿后差动电流相关的判据,有效防止发生工频磁场干扰时母线差动保护误动,提高了保护可靠性.仿真结果表明,所提算法能够准确有效地补偿工频磁场干扰,防止工频磁场干扰下母线差动保护误动,且不会影响区内故障下母线差动保护的性能....
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Published in | 电力自动化设备 Vol. 41; no. 4; pp. 184 - 189 |
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Main Authors | , , , , , , , , |
Format | Journal Article |
Language | Chinese |
Published |
国电南京自动化股份有限公司,江苏 南京 210003
10.04.2021
南京国电南自电网自动化有限公司,江苏 南京 211153%国网江苏省电力有限公司无锡供电分公司,江苏 无锡 214026%江苏省宜兴中等专业学校,江苏 宜兴 214206 |
Subjects | |
Online Access | Get full text |
ISSN | 1006-6047 |
DOI | 10.16081/j.epae.202102038 |
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Abstract | TM772; 分析工频磁场干扰对母线差动保护的影响,将各条支路上工频磁场干扰电流幅值和相位相似的特征与母线保护装置备用支路多的特点进行结合,通过母线保护装置的备用间隔的电流采样值特征识别工频磁场干扰并得到干扰值.计算补偿干扰电流后的差动电流,并在母线差动保护判据中增加补偿后差动电流相关的判据,有效防止发生工频磁场干扰时母线差动保护误动,提高了保护可靠性.仿真结果表明,所提算法能够准确有效地补偿工频磁场干扰,防止工频磁场干扰下母线差动保护误动,且不会影响区内故障下母线差动保护的性能. |
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AbstractList | TM772; 分析工频磁场干扰对母线差动保护的影响,将各条支路上工频磁场干扰电流幅值和相位相似的特征与母线保护装置备用支路多的特点进行结合,通过母线保护装置的备用间隔的电流采样值特征识别工频磁场干扰并得到干扰值.计算补偿干扰电流后的差动电流,并在母线差动保护判据中增加补偿后差动电流相关的判据,有效防止发生工频磁场干扰时母线差动保护误动,提高了保护可靠性.仿真结果表明,所提算法能够准确有效地补偿工频磁场干扰,防止工频磁场干扰下母线差动保护误动,且不会影响区内故障下母线差动保护的性能. |
Author | 殷建荣 刘志仁 薛明军 陈琦 陈宏岩 唐治国 吴路明 王永旭 周兆庆 |
AuthorAffiliation | 国电南京自动化股份有限公司,江苏 南京 210003;南京国电南自电网自动化有限公司,江苏 南京 211153%国网江苏省电力有限公司无锡供电分公司,江苏 无锡 214026%江苏省宜兴中等专业学校,江苏 宜兴 214206 |
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Author_FL | CHEN Hongyan WU Luming YIN Jianrong LIU Zhiren CHEN Qi TANG Zhiguo XUE Mingjun ZHOU Zhaoqing WANG Yongxu |
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Title | 工频磁场干扰识别及母线保护防误技术 |
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