【摘要】 对于施工前期不能完成上库蓄水的抽水蓄能电厂来说,完成主变压器差动保护CT极性判别是一个技术难题。根据电厂自身条件、利用有限资源完成主变压器差动CT极性判别,对主变压器安全稳定运行,对更好地完成机组首机首次启动调试均有较大帮助。本文列举了几种主变压器差动保护CT极性判别的方法,并对这几种方法的使用特点进行比较、分析,得出一些结论。为今后新建、扩建抽水蓄能电厂做好主变压器差动保护CT极性判别工作提供参考。更多还原

【Abstract】 For the pumped storage power plant which cannot get water in upper dam at the early stage of construction,it is a technical difficulty to complete the CT polarity judgment of main transformer differential protection. The main transformer differential protection polarity judgment can be completed according to present conditions and limit resources of the power plant. It is helpful to the main transformer safe & reliable operation as well as first unit initial startup commissioning. The article gives examples of CT polarity judgment methods for main transformer differential protection and gets conclusions through comparison and analysis of these methods. This provide conferences for new built and extended pumped storage power plants on CT polarity judgment of main transformer different protection.更多还原