Research on On-Line Monitoring Device for Metal Oxide Arrester

摘要

In view of the damage or explosion phenomenon of metal oxide surge arresters (MOA) in the current power system, which is easily affected by external factors, this paper will study the online monitoring device for metal oxide arresters. Throughout the research process, the author begins with the basic concepts of MOA and the research significance of online monitoring devices, and masters the design significance and basic theory of the device. On this basis, through the hardware design and software design two modules to build the entire metal oxide arrester online monitoring device. At the same time, considering the scientific and realistic nature of the metal oxide arrester online monitoring device, the author will also carry out simulation experiments on the device at the end of the article, in order to improve the safety of online monitoring of metal oxide arresters and ensure the power system is operating normally. As the basic energy source in China, electric energy is related to the normal development of national life and industrial production. In this context, the operating state of the power system has become the focus of national attention. If the power system fails to operate normally during the operation, it will have a great impact on the residents of China. Among the many devices in the power system, metal oxide surge arresters (MOAs) are among the most important devices, which can greatly reduce the line faults caused by lightning strikes in power systems. However, as far as the current situation is concerned, MOA equipment does not have too strong safety during the operation of the power system, and is highly susceptible to thermal damage, transients, resonant overvoltage and other factors, resulting in damage or even explosion problems. It is a serious threat to the normal operation of the power system. It can be seen that in order to ensure the normal operation of the power system, it is imperative to improve the security of the MOA. Currently, the most common method for research on MOA safety is to conduct preventive trials on MOA. Although this method can prevent the failure of MOA to a certain extent, it is not suitable for long-term because it has the characteristics of long test period, high labor intensity, high maintenance cost and easy to produce false alarms. Based on this, this paper will study the online monitoring device for metal oxide arresters.