The Design Of Substation Switchgear Operating Environment Automatic Monitoring System

With the rapid development of State Grid and extension of unattended substation, The electrical equipment, such as metal armored switchgear (KYN), has been widely used in lOkV,35kV distribution system. This style of equipment often uses a closed-end structure, some parts of moving contact, static contact and the inlet and outlet contact, located in the switch cabinet, due to overload, contact surface oxidation and bad heat dispersion, will cause resistance increase, the heat buildup and the rise of temperature. At the same time, if the humidity rises rapidly, it probably occur accident of the bus flashover, which makes influence on stable operation of equipment in substation. As the improvement of substation automation level, it is necessary to devise an effective online monitoring plan, in order to solve the problem of real-time non-electricity monitoring in substation. In order to detect the situation and take measures to prevent damage to the electrical equipment, as well as personal undue damage.This paper first substation non-power remote monitoring system based on ZigBee wireless sensor network design for overall program as the starting point, expand the topics. The system mainly consists of three major components:the terminal monitoring equipment, data management machine and the host machine management software. The terminal monitoring equipment mainly refers to the wireless temperature sensors and smart controllers. The paper from the program selection, equipment hardware design, software design of three parts, is described in detail the terminal monitoring equipment research and development process. Which wireless temperature sensor using low power management technology, the module can work in the high temperature environment for a long time only lithium battery-powered technical indicators. Intelligent controller with perfect control strategies to achieve effective regulation and control of the switch cabinet temperature and humidity. The entire system of the underlying data transmission by ZigBee wireless sensor network equipped with the sky, and finally through the data management machines and other equipment for wireless transmission to cable transmission conversion, making the whole system has higher reliability and stability. The system for improving the substation reliable and stable operation, and the substation automation level is of great significance.