[1]张鹏,杨栋,陆承与,等.现行保护机制对10 kV无内熔丝电容器组早期故障预警策略的影响[J].电力电容器与无功补偿,2020,41(5):6-11.[doi:10.14044/j.1674-1757.pcrpc.2020.05.002]
 ZHANG Peng,YANG Dong,LU Chengyu,et al.Effect of Current Protection Mechanism on Early Fault Warning Strategy of 10 kV Capacitor Bank Without Inner Fuses[J].Power Capacitors & Reactive Power Compensation,2020,41(5):6-11.[doi:10.14044/j.1674-1757.pcrpc.2020.05.002]
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现行保护机制对10 kV无内熔丝电容器组早期故障预警策略的影响()
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《电力电容器与无功补偿》[ISSN:1674-1757/CN:61-1468/TM]

卷:
41卷
期数:
2020年第5期
页码:
6-11
栏目:
无功补偿与滤波
出版日期:
2020-10-30

文章信息/Info

Title:
Effect of Current Protection Mechanism on Early Fault Warning Strategy of 10 kV Capacitor Bank Without Inner Fuses
作者:
张鹏12 杨栋2 陆承与2 王加臣2 翟国柱2
1. 上海交通大学电气工程系, 上海 200030; 2. 国网江苏省电力有限公司太仓市供电分公司, 江苏 太仓 215400
Author(s):
ZHANG Peng12 YANG Dong2 LU Chengyu2 WANG Jiachen2 ZHAI Guozhu2
1. Department of Electrical Engineering,Shanghai Jiaotong University, Shanghai 200030, China; 2. State Grid Taicang County Power Supply Company, Jiangsu Taicang 215400, China
关键词:
在线监测 保护协同 保护整定 预警策略
Keywords:
online monitoring protection coordination protection setting early warning strategy
DOI:
10.14044/j.1674-1757.pcrpc.2020.05.002
文献标志码:
A
摘要:
针对近年来国内电容器组在线监测装置罕有成功预警案例的现象,通过分析10 kV无内熔丝电容器组的外熔断器和继电保护协同机制,指出尽管理论条件下,通过监测电容器内部单个元件击穿时的电气量突变情况能够实现预警功能,但在工程实践中,由于保护的实际整定值远低于理论值,单台电容器内部击穿1个元件通常即可触发继电保护动作,各类基于突变量的预警方法将丧失时间裕度,需适当调高保护定值、允许电容器组短期带病运行,方能发挥其预警功效。
Abstract:
In view of the rare successful early warning cases of online monitoring devices for domestic capacitor banks in recent years,it is pointed out by analyzing the cooperative mechanism of external fuse and relay protection of 10 kV capacitor bank without inner fusesthat the early warning function can be achieved by monitoring the sudden change of electrical quantity at breakdown of single element of capacitor at theoretical condition,yet in engineering practice,since the actual setting value of protection is much lower than the theoretical value,the breakdown of a single element in capacitor can usually trigger the relay protection. Various kinds of early warning methods based on mutation will lose time margin. It is necessary to adjust the protection setting value appropriately and allow the capacitor bank to run with illness for a short termin order to play warning effect of online monitoring devices.

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备注/Memo

备注/Memo:
收稿日期:2020?03?24
作者简介: 张鹏(1986—),男,高级工程师,从事变电设备的故障诊断与状态检测工作。 杨栋(1976—),男,工程师,从事电网设备技改大修及运维管理工作。 陆承与(1995—),男,助理工程师,从事变电设备检修与试验工作。 王加臣(1983—),男,高级工程师,从事电网安全生产管理工作。 翟国柱(1979—),男,高级工程师,从事高电压专业技术管理工作。
更新日期/Last Update: 2020-10-30