电力自动化技术的不断发展，对变电站监控系统提出了更高的要求，在阐述了系统功能需求的前提下，提出了基于嵌入式以太网技术的监控系统方案，并讨论了系统网络结构、网络安全性、视频与监控联动等相关技术问题。所提出的方案已在实际工程中应用，并取得了良好的效果。

With the development of the electric automation technology, higher requirements on supervisory control system for substation are presented. This article describes the requirement of system function and then puts in a scheme of supervisory control system based on the embedded Ethernet technology. And the related technological problems, such as the system network structure, network security, video frequency, and supervisory control interlock etc.， are discussed. The proposed scheme has been verified in a practical project.