全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
电网技术  2007 

基于电压闭锁的异步法变压器差动保护新算法

, PP. 37-41

Keywords: 变压器,励磁涌流,比率差动,序电压,异步法

Full-Text   Cite this paper   Add to My Lib

Abstract:

分析了变压器发生区内外故障时差流和制动电流的异步变化规律,提出了变压器差动保护新算法。以端电压序分量的大小和变化趋势作为比率差动的闭锁条件,选取小于1个周波的数据窗计算相关电压值。仿真试验表明新算法不受励磁涌流、和应涌流的影响,当发生区内略微严重故障时可在10~15ms内快速动作,发生区外故障时不会误动,对大型高压/超高压变压器能够起到快速保护作用,具有较高的实用价值。

References

[1]  马静,王增平,徐岩.用相关函数原理识别变压器励磁涌流和短
[2]  路电流的新方法[J].电网技术,2005,29(6):78-81.
[3]  Ma Jing,Wang Zengping,Xu Yan,et al. A new method to identify inrush current and short circuit current of transformer based on correlation function[J].Power System Technology,2005,29(6):78-81(in Chinese).
[4]  潘荣贞,郁惟镛,田寿龙.基于波形记忆和模糊极小-极大神经网络的变压器励磁涌流和内部短路的鉴别[J].电网技术,2002,26(5):4-9.
[5]  Pan Rongzhen,Yu Weiyong,Tian Shoulong.Distinguish transformer magnetizing inrush from its internal faults based on wave shape remembrance and fuzzy minimum–maximum neural network [J].Power System Technology,2002,26(5):4-9(in Chinese).
[6]  王雪,王增平.变压器内部故障仿真模型的设计[J].电网技术,2004,28(12):50-52.
[7]  Wang Xue,Wang Zengping.Study of simulation of transformer with internal faults[J].Power System Technology,2004,28(12):50-52 (in Chinese).
[8]  韩正庆,高仕斌,李群湛.基于变压器模型的新型变压器保护原理和判据[J].电网技术,2005,29(5):67-71.
[9]  Han Zhengqing,Gao Shibin,Li Qunzhan.A novel transformer model based protective principle for transformer and its criteria[J].Power System Technology,2005,29(5):67-71(in Chinese).
[10]  李贵存,刘万顺,贾清泉,等.一种利用小波原理防止变压器差动保护误动的新算法[J].电网技术,2001,25(7):48-52.
[11]  Li Guicun,Liu WanShun,Jia Qingquan,et al.A new algorithm to prevent misoperation of transformer differential protection based on principle of wavelet transform[J].Power System Technology,2001, 25(7):48-52 (in Chinese).
[12]  张雪松,何奔腾.变压器励磁涌流的移相比较鉴别方法[J].中国电机工程学报,2005,25(19):43-47.
[13]  Zhang Xuesong,He Benteng.A new method to identify inrush current by phasor comprarison[J].Proceedings of the CSEE,2005,25(19):43-47(in Chinese).
[14]  徐岩,王增平,杨奇逊.基于变压器模型的新型变压器保护原理的研究[J].中国电机工程学报,2003,23(12):54-58.
[15]  Xu Yan,Wang Zengping,Yang Qixun.Study on the novel transformer protection principle based on the transformer model[J].Proceedings of the CSEE,2003,23(12):54-58 (in Chinese).
[16]  葛宝明,苏鹏声,王祥珩,等.基于等效瞬时电感频率特性判别变压器励磁涌流[J].电力系统自动化,2002.26(17):35-40.
[17]  Ge Baoming,Su Pengsheng,Wang Xiangheng,et al.Distinguish inrush current for transformers using frequency characteristic of instantaneous excitation inductance[J].Automation of Electric Power Systems,2002,26(17):35-40(in Chinese).
[18]  徐岩,王增平,杨奇逊,等.基于电压与电流微分比值原理的新型变压器保护[J].电力系统自动化,2003,27(23):56-62.
[19]  Xu Yan,Wang Zengping,Yang Qixun,et al.Research on novel transformer protection based on the ratio of voltage and fluxional differential current [J].Automation of Electric Power Systems,2003,27(23):56-62(in Chinese).
[20]  Lin Xiangning, Liu Pei, Malik O P.Studies for identification of the inrush based on improved correlation algorithm[J].IEEE Trans on Power Delivery,2002,17(4):901-907.
[21]  Keizo Inagaki,Masaru Higaki,Yoshiaki Matsui,et al.Digital protection method for power transformer based on an equivalent circuit composed of inverse inductance[J].IEEE Trans on Power Delivery,1998,3(4):1501-1510.
[22]  Wang H,Butler K L.Finite element analysis of internal winding faults in distribution transformers[J].IEEE Trans on Power Delivery,2001,16(13):422-428.
[23]  陈德树.计算机继电保护原理与技术[M].北京:水利电力出版社,1992.
[24]  葛耀中.新型继电保护与故障测距原理与技术[M].西安:西安交通大学出版社,1993.
[25]  杨经超,尹项根,陈德树,等.多判据综合的变压器差动保护[J].电网技术,2003,27(10):66-71.
[26]  Yang Jingchao,Yin Xianggen,Chen Deshu,et al.Power transformer differential protection with integration of multi-criteria[J].Power System Technology,2003,27(10):66-71 (in Chinese).

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133