摘要:变压器作为电力系统中重要的设备之一，其安全运行关系到整个电力系统在供电方面是否能长期稳定的工作起到至关重要的作用。随着电力系统发展，特别是在创新方面，新材料、新工艺的发展，对变压器的各个方面都有很高的要求，如在变压器的容量和工作的稳定性，而在对变压器的保护的快速性和可靠性上也提出了更高的要求。

　　　变压器的保护中，其主保护通常会选择差动保护，差动保护是反应其内部故障并起到保护作用，但是差动保护不能反应变压器外部故障，所以通常选择瓦斯保护来与差动保护共同作用，瓦斯保护是能够在变压器的外部故障起到保护作用。在本文中对现有的变压器的保护：差动保护、瓦斯保护和其后备保护作了一个简要的介绍。但是由于变压器的特殊性，变压器保护动作的正确率、拒动和误动事件时有发生，因此，我们迫切需要研究一种新的变压保护方法来解决一系列的存在问题。

　　　近年，随着技术的发展，计算机化、网络化和智能化的普遍应用，微机保护在变压器保护中成为了主要的保护方法。为了能够更好地完成此设计，本文对变压器保护的各种保护原理及作用和主要参数整定上作了一个分析，也对微机保护作了一个简要的概述。

关键字：变压器保护；差动保护；微机保护

ABSTRACT:Transformer, as one of the important equipment in the power system, the safe operation of the relationship to the whole power system can work steady in a long-term in power play a crucial role. With the development of electric power system, especially in innovation, the development of new materials, new technology, have very high requirements on all aspects of the transformer, such as in the capacity of transformer and the stability of work, and in the rapidity and reliability of transformer protection are also put forward higher request.

　　　Transformer protection, the main protection usually choose differential protection, differential protection is the reaction and the internal fault protection, but not reflect transformer differential protection external fault, so choose the gas protection to jointly with the differential protection, gas protection is to be able to in the external fault of transformer protection. In this paper the existing transformer protection, differential protection, gas protection and backup protection makes a brief introduction. But due to the particularity of the transformer, transformer protection action of the time, refusing action and error action events occurred frequently, therefore, we urgently need to study a new transformer protection method to solve a series of problems.

　　　In recent years, with the development of technology, computerized, networked and intelligent universal application of microcomputer protection in transformer protection becomes the main protection methods. In order to better complete the design, in this paper, the transformer protection principle and the function of all kinds of protection and the main parameter setting and a analysis, also made a brief overview of microcomputer protection.

Keywords： Transformer  protection; Differential  protection; Microcomputer Protection