近年来,电力企业承担着更多的社会责任,安全尤为重要。随着电力系统规模愈来愈大,电压等级愈来愈高,电气误操作事故也成为电力系统频发性事故之一。为了确保电网安全,避免各类误操作事故的发生,除强化运行管理手段外,还必须重视“五防”工作。众所周知,微机五防系统在各电压等级的变电站已得到广泛应用,效果显著,成为保证安全的重要技术措施。在实践中我们发现微机五 In recent years, power companies have assumed more social responsibility and safety is especially important. As the size of the power system becomes larger and larger, the voltage level is getting higher and higher, and electrical misoperation accidents have also become one of frequent accidents in the power system. In order to ensure the safety of the power grid and avoid all kinds of misoperation accidents, we must attach importance to the work of “Five Preventions” in addition to strengthening the operation and management measures. As we all know, microcomputer five defense system in the voltage level of the substation has been widely used, the effect is significant, become an important technical measure to ensure safety. In practice we found that computer five