华电技术 ›› 2014, Vol. 36 ›› Issue (10): 43-45.

• 技术交流 • 上一篇    下一篇

非整点数变压器的差动保护应用方案

  

  1. (国电南京自动化股份有限公司,南京〓210000)
  • 出版日期:2014-10-25 发布日期:2014-11-20

Application scheme of differential protection of noninteger points phaseshift transformer

  1. (Guodian Nanjing Automation Company Limited, Nanjing 210000, China)
  • Online:2014-10-25 Published:2014-11-20

摘要: 摘要:介绍了变压器发生非整点数偏移的原因及其特点,以瑞士ABB集团公司生产的RET670变压器保护装置为例,分析了非整点数变压器对差动保护的影响,提出了增加辅助CT补偿与装置软件改进相结合的应用方案。

关键词: 关键词:非整点数变压器, 差动保护, 应用方案, 参数设置, 测试

Abstract: Abstract:The reasons of noninteger phase shift of transformer and the features of the noninteger phase shift were introduced. Taking RET670 transformer protection device manufactured by ABB Group in Swiss as example, the influence of the noninteger phaseshift transformer on the differential protection was analyzed. An application scheme combining the additional auxiliary CT compensation with the device software improvement was proposed.

Key words: Keywords:noninteger points phaseshift transformer, differential protection, application scheme, parameter setting, measurement