电力系统自动化2012，Vol.36Issue(17)：95-102,118,9.
电炉变压器成套保护装置研制
Development of Micropressor-based Assembly Protection Equipment for Furnace Transformer
姚晴林 1李瑞生 1刘星 1刘志远 2姚东晓 1姜睿智1
作者信息
- 1. 许继电气股份有限公司,河南省许昌市461000
- 2. 宁夏电力调度中心,宁夏回族自治区银川市750001
- 折叠
摘要
Abstract
Currently,there is only over-current protection for large capacity furnace transformer and without longitudinal differential protection（LDP） at home and abroad,in order to remedy the lack development of it,a LDP of furnace transformer is discussed.An optimal compensation equation for LDP of furnace transformer is put forward,which is different from that of traditional transformer.The particular protection problem during the breaker closing of furnace transformer is analyzed and its solution is also presented.As the gradient setting values for longitude difference in two sides of furnace transformer are small,the restraint current calculation of LDP in three sides of furnace transformer is also different from that of traditional LDP of transformer.The characteristic of the current for LDP is analyzed when the low voltage side of furnace transformer has particular wiring and grounding fault.The characteristic for low voltage start of backup protection of furnace transformer is also analyzed.The protection device developed has been put into production.关键词
电炉变压器/变压器保护/纵差保护/后备保护Key words
furnace transformer/transformer protection/longitudinal differential protection(LDP)/backup protection分类
信息技术与安全科学引用本文复制引用
姚晴林,李瑞生,刘星,刘志远,姚东晓,姜睿智..电炉变压器成套保护装置研制[J].电力系统自动化,2012,36(17):95-102,118,9.
