|
|
|
| Function improvement and experimental analysis of the back-up-switchover-unit |
| SUN Dagen |
| CHN Energy Daduhe Pubugou Hydropower General Plant, Yaan, Sichuan 625304 |
|
|
|
|
Abstract The back-up-switchover-unit can put the standby power supply into operation quickly after the working power supply is disconnected due to fault or other reasons. However, if the working power supply trips due to short circuit at the load end, the tripping signal of the power supply protection device shall block the action of the back-up-switchover-unit, otherwise the standby power supply will also be closed in the fault and lead to secondary damage. Based on the field test, this paper analyzes the problems existing in the locking function of the back-up-switchover-unit, and puts forward the corresponding solutions, which improves the reliability of the back-up-switchover-unit.
|
|
Received: 27 April 2021
|
|
|
|
[1] 姚李孝, 朱雪凌. 发电厂电气部分[M]. 北京: 中国水利水电出版社, 2011.
[2] 郑曲直, 程颖. 备用电源自投装置设计、应用的若干问题[J]. 继电器, 2003(8): 18-21.
[3] 金鑫, 刘文君, 杨秀花. 工厂低压配电室备自投调试浅析[J]. 电工技术, 2019(22): 22-24.
[4] 继电保护和安全自动装置技术规程:GB 14285—2006[S]. 2006.
[5] WBT 196D-I数字备用电源自动投装置使用说明书[Z].BT 196D-I数字备用电源自动投装置使用说明书[Z]. 太原合创自动化有限公司, 2012.
[6] 胡庆春. 110kV备自投与上级母线保护配合问题研究[J]. 电工技术, 2020(19): 73-74.
[7] 郑曲直, 程颖. 备用电源自投装置设计、应用的若干问题[J]. 继电器, 2003(8): 18-21.
[8] 尹晓海, 王时光, 肖云亮, 等. 一例特高压站用电备自投误闭锁研究与改进[J]. 电气技术, 2018, 19(3): 130-133.
[9] 闫石, 钟素梅. 地铁35kV备自投的分析[J]. 电气技术, 2020, 21(1): 113-116, 125.
[10] 金能, 梁宇, 邢家维, 等. 提升配电网线路保护可靠性的远方保护及其与就地保护优化配合方案研究[J].电工技术学报, 2019, 34(24): 5221-5233.
[11] 刘鹏辉, 黄纯, 石雁祥, 等. 配电线路励磁涌流自适应闭锁方案[J]. 电工技术学报, 2019, 34(11): 2395-2404.
[12] MiCOM P12x过电流保护装置技术说明书[Z]. 上海阿海珐电力自动化有限公司, 2006. |
|
|
|
2021, Vol. 22 
