华电技术 ›› 2015, Vol. 37 ›› Issue (8): 10-11.

• 基础研究 • 上一篇    下一篇

变压器经济运行及励磁涌流抑制技术研究

  

  1. 1.国网扬州供电公司,江苏扬州〓225002 2.南京国电南自电网自动化有限公司,南京〓211100
  • 出版日期:2015-08-25 发布日期:2015-11-09

Study on transformer economical operation and excitation surge current technology

  1. 1.State Grid Yangzhou Power Supply Company, Yangzhou 225002, China; 2. Guodian Nanjing Automation Company Limited, Nanjing 211100, China
  • Online:2015-08-25 Published:2015-11-09

摘要:

摘要:从电力变压器的经济运行角度出发,分析了变压器经济运行点的选取及运行方式的调整策略。经济运行的实施需要频繁投切变压器,为了消除变压器空投时励磁涌流对变压器的使用寿命以及供电的安全性、高效性和可靠性带来的负面影响,提出了一种基于选相位合闸的励磁涌流抑制方法,能够有效降低空投时涌流大小。通过PSCAD/EMTDC仿真实验以及电力系统动态模拟试验,验证了该方法的优越性。

关键词: ">关键词:变压器;经济运行;励磁涌流;抑制技术

Abstract:

Abstract:Starting from the angle of power transformer economical operation, the selection of the economical operaton point of the transformer and the adjustment strategy of the transformer operation mode were analyzed.The implementation of economical operation needs to switch the transformer frequently. The excitation surge current of the transformer during switch on without load has some negative effects for the transformer service life and the safety, efficiency and reliability of the power supply. In order to eleminate these negative effects, a excitation surge current suppression method based on phase selecting switch on was proposed, and the method can reduce the excitation surge current. The superiority of the method was verified by PSCAD/EMTDC simulation and power system dynamic simulation test.

Key words: Keywords:transformer, economical operation, excitation surge current, suppression technique