变压器故障检测系统_大学生毕业设计论文.doc

变压器故障检测系统 摘 要 大型电力变压器是电力系统中重要的和昂贵的设备之一，其运行状态直接影响系统的安全性。本文是从变压器的故障原因、类型以及分析入手，介绍了现今国内外主要研究的基于变压器油中气体的故障诊断方法。系统的硬件部分以ATmega8单片机为核心，运用C语言编写软件程序，使之能够识别并处理从传感器传来的电信号，然后通过人机交互界面显示出来，近而使人能够很轻易判断故障类型。 关键词：变压器故障 油气体分析 Transformer malfunction detection system Abstract In the electrical power system, the large-scale power transformer is one of the important and expensive equipment, it’s running status direct influence system security. At present, the electrical power system overhaul system is transforming by the preventive maintenance to the condition overhaul, but the condition overhaul is take understands the equipment the running status as the foundation. Must understand the equipment condition, needs to carry on the analysis diagnosis to the equipment information. This article work is develops under this background, its significance lies in for the power transformer condition overhaul provides the technical support. This article is from the transformer breakdown reason, the type and the analysis obtains, introduced the nowadays domestic and foreign main research based on the transformer oil in the gas breakdown diagnosis method. Are partial in the system hardware, this article take the ATmega8 MCU as a core, use the gather simulation signal likes voltage, electric current, temperature, gas and so on, to transform after ADC for the digital quantity, and then signal sends in the MCU system to process, will judge the transformer through the processing result whether will include the breakdown and the breakdown type and so on. Simultaneously this system has also established the relay prevents likes the electric current protection, the differential motion protection and the gas protection and so on, to protect for short-circuit the breakdown or the off normal operation condition according to becomes the transformer the damage, enhances the power supply reliability. Are partial in system software, this article utilizes the C language compilation software procedure, enables