浅析变压器差动保护

电力系统是由发电、输电、变电、配电和用电等环节组成的电能生产与消费系统,它的正常运行是国民生产生活的基石。而变压器作为电压、电流的转换装置,联系着不同的电压等级网络,是电网中能量转换、传输的核心,其运行情况关系着电网的安全稳定。变压器的可靠运行非常重要,需要可靠的、完善的继电保护装置的支持,中国长期以来一直将差动保护作为变压器内部故障的主保护。该文主要介绍了差动保护的基本原理,分析了影响变压器差动保护的一些因素,进而总结了运行实际中一些常见的方法,并针对性地进行了理论上的可行性分析。

Analysis of Transformer Differential Drotection

The power system consists of power generation,transmission,substation,distribution and electricity sectors such as the composition of electricity production and consumption systemsAs the conversion of voltage and current device,transformer contact with the network of different voltage grade is the core of energy conversion and transmission in the network.The operation of transformer is related to the security and stability of power grid.So it is very important to ensure the re liable operation of the transformer.This requires reliable and comprehensive protection.China has long been take differential protection as the main protec- tion of transformer internal fault.This paper describes the basic principle of differential protection,and analyzes the fluence factors of differential protection. And then demonstrates the common feasibility method to solve the trouble.