Introduction

The integrated automation system of substations utilizes advanced computer technology, modern electronic technology, communication technology and information processing technology to reconfigure and optimize the functions of secondary equipment in substations (including relay protection, control, measurement, signaling, fault recording, automatic devices and telecontrol devices, etc.), and to monitor, measure, control and coordinate the operation of all equipment in the substations. Through the exchange of information among the various devices within the integrated automation system of substations, data sharing is achieved, completing the tasks of substation operation monitoring and control. The integrated automation system of substations replaces the conventional secondary equipment of substations and simplifies the secondary wiring of substations. The integrated automation system of substations is an important technical measure for improving the safety and stability operation level of substations, reducing operation and maintenance costs, improving economic benefits and providing high-quality electric power to users.
The integration of functions is its most distinctive feature compared to conventional substations. It is based on computer technology, uses data communication as a means, and aims at information sharing.
Two principles
First, for medium and low voltage substations, an automation system is adopted to better implement unmanned operation, achieving the goal of reducing personnel and increasing efficiency;
Second, for the construction and design of high voltage substations (220kV and above), it is required to use advanced control methods to solve the technical dispersion, self-contained systems, repeated investment and even impact on operational reliability of various specialties.