华电技术 ›› 2013, Vol. 35 ›› Issue (8): 31-35.

• 技术交流 • 上一篇    下一篇

过激磁对RET316型变压器差动保护的影响

  

  1. (华电国际邹县发电厂,山东邹城〓273522)
  • 出版日期:2013-08-25 发布日期:2013-09-23

Influence of overexcitation on RET316 type transformer differential protection

  1. (Huadian International Zouxian Power Plant, Zoucheng 273522, China)
  • Online:2013-08-25 Published:2013-09-23

摘要: 摘要:介绍了ABB公司生产的RET316 型变压器差动保护概况,以华电国际邹县发电厂在机组升压过程中变压器差动保护动作跳闸为实例,全面分析了ABB公司 RET316标积制动式变压器差动保护在过激磁时误动原因,认为过激磁是导致主变压器差动保护不正确动作的主要原因,采取了有效措施,避免了此类似事故的再次发生。

关键词: 关键词:RET316 型变压器, 差动保护, 励磁涌流, 过激磁, 原因分析

Abstract: Abstract:The RET316 type transformer differential protection device manufactured by ABB was introduced. An incorrect tripping of the transformer differential protection occurred in the voltage rising process of a unit in Huadian International Zouxian Power Plant. Taking this accident as example, the reasons of incorrect tripping of the ABBmade RET316 scalar product braking type transformer differential protection in overexcitation were analyzed comprehensively. It was determined that the overexcitation is the main reason causing the transformer differential protection to trip incorrectly. The effective measures were adopted, and similar accident dos not occur again.

Key words: Key words:RET316 type transformer, differential protection, excitation surge current, overexcitation, reason analysis