人类已步入了21世纪,这是一个以迅速发展的计算机网络为基础的全面数字化的信息时代。因特网(Internet)跨越了国界的限制和空间的约束,在改变了人们生活方式的同时也为信息交流和传输创造了便利的手段。而同样以计算机技术、网络技术、通信技术为基础的电力自动化系统也基本上随之而发展,许多新技术得到了及时地应用。 Mankind has entered the 21st century, a fully digital era of information based on a rapidly growing computer network. The Internet has straddled the limits of national boundaries and space constraints, and has changed people’s lifestyles and meanwhile facilitated the exchange of information and transmission. The same electric power automation system based on computer technology, network technology and communication technology has basically followed that many new technologies have been applied in time.