Study on the On-line Monitoring and Fault Early-Warning Techniques for Medium Voltage Cable Terminals

doi:10.11930/j.issn.1004-9649.2014.4.123.4

Abstract

Abstract: Based on the condition of wide distribution, poor working environment and inconvenient inspection of outdoor switchgear cubicles for loop network, an on-line monitoring and fault early-warning system is designed and developed for medium voltage cable terminals in order to assist the distribution network automation. The monitoring system architecture diagram is provided and the design method and function of various parts are described. To ensure the reliability of data acquisition, an anti-interference, high protection grade on-line intelligent monitoring device is developed with self testing capabilities, in which the optical fiber is used as communication medium to ensure the reliability of information transmission. In order to realize the intelligent analysis of fault early-warning techniques, a fault early-warning algorithm is designed based on the practical experiences.

Key words: distribution network automation, cable terminal, temperature, on-line monitoring, fault, early warning

CLC Number:

TM247

WU Min-xiu. Study on the On-line Monitoring and Fault Early-Warning Techniques for Medium Voltage Cable Terminals[J]. Electric Power, 2014, 47(4): 123-127.

Add to citation manager EndNote|Ris|BibTeX

URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.2014.4.123.4

https://www.electricpower.com.cn/EN/Y2014/V47/I4/123

References

[1] 李红雷,张丽,李莉华. 交联聚乙烯电缆在线监测与检测[J]. 中国电力,2010,43（12）：31-34.
LI Hong-lei, ZHANG Li, LI Li-hua. XLPE cable line monitoring and detection [J]. Electric Power, 2010, 43(12): 31-34.
[2] 张百华,江裕熬,郭海峰,等. 500 kV充油电缆局部放电在线监测系统的研究[J]. 高压电器,2007,43（6）：412-415.
ZHANG Bai-hua, JIANG Yu-ao, GUO Hai-feng, et al . Research 500 kV oil - filled cable line partial discharge monitoring system[J]. High Voltage Apparatus, 2007, 43(6): 412-415.
[3] 王滨,郑有明,邢昆. GIS局部放电在线监测系统及其在电缆终端的应用[J]. 中国电业技术,2012（11）：481-488.
[4] 徐红义,黄斌,郭和清. XLPE高压电缆在线监测方法综述与设计[J]. 湖北电力,2009,33（6）：38-39,76.
[5] 陆锋. 电力电缆故障的诊断及防范[J]. 供用电,2006,23（6）：45-48.
LU Feng. Power cable fault diagnosis and prevention[J].Electricity Supply, 2006, 23(6): 45-48.
[6] 刘永胜,孙亮,李则衡. 电力电缆接地电流在线监测平台的开发[J]. 科技致富向导,2012（30）：7-8.
[7] 郑文栋,杨宁,钱勇,等. 多传感器联合检测技术在XLPE电缆附件局部放电定位中的试验研究[J]. 电力系统保护与控制,2011,39（20）：84-88.
ZHENG Wen-dong, YANG Ning, QIAN Yong, et al . Experimental study on multi-sensor technology combined detection of partial discharge in XLPE cable accessories positioning [J]. Power System Protection and Control, 2011, 39(20): 84-88.
[8] 李志平,施卫华. 高压电缆及电缆隧道环境在线监测系统的应用[J]. 昆明冶金高等专科学校学报,2012,28（5）：32-36.
[9] 柳宗根.供配电系统电缆接头温度在线监测及其应用前景[J].安庆科技,2004（3）：31-32.
[10] 苏雪源. 红外测温在高压电缆瓷套终端监测中的应用[J]. 福建电力与电工,2004,24（1）：47-48,60.
[11] 李展鹏. 基于高压电缆金属护层接地电流的在线检测系统分析[J]. 电力技术资讯,2013（11）：86-87.
[12] 成永红,谢恒,衣立冬. 基于热效应的电力电缆及其终端在线检测技术[J]. 高电压技术,1999,25（3）：4-6.
CHENG Yong-hong, XIE Heng, YI Li-dong. Based on the thermal effects of power cables and terminal line detection technology [J]. High Voltage Engineering, 1999, 25(3): 4-6.
[13] 张艾萍,万瑞军. 基于数字温度传感器的电缆故障在线监测及火灾预警系统[J]. 电力自动化设备,2003,23（10）：57-61.
[14] 江秀臣,蔡军,董小兵,等. 110 kV及以上电压等级交联电缆在线监测技术[J].电力自动化设备,2005,25（8）：13-17.
[15] 郭灿新,张连宏,姚林朋,等. 局部放电HF_UHF联合分析方法的现场电缆终端检测应用[J]. 电力自动化设备,2010,30（5）：92-95.
GUO Can-xin, ZHANG Lian-hong, YAO Lin-peng, et al . Application of HF/UHF joint partial discharge analysis to on-site power cable terminal detection[J]. Electric Power Automation Equipment, 2010, 30(5): 92-95.