主变差动保护中不平衡度校验试验的实现

在主变的安装调试或定检过程中,不平衡度校验试验是主变保护检验必不可少的项目。由于国内目前主变差动保护的生产厂家较多,设计原理上各不相同,这些给调试人员的工作带来了一定难度。结合国内主变保护主要生产厂家的设计原理和现场调试经验,提出了不平衡度校验试验采用三相电流与单相电流试验方法,用实例给予了验证。该方法有较好的通用性。

Realization of Imbalance-degree Checkout in Transformer Differential Protection

Imbalance-degree checkout is indispensable for transformer test.There are so many transformer protection manufactories and the design principles of transformer protection are different,which brings us many difficulties. Means based on practice are brought out and proved universal in this article.