On-line monitoring system for high voltage handcart switch cabinet

Abstract

The invention relates to an on-line monitoring system for a high voltage handcart switch cabinet. The on-line monitoring system comprises a temperature acquisition terminal, a display instrument terminal, and working power supplies, wherein the working power supplies are respectively corresponded to the temperature acquisition terminal and the display instrument terminal. The temperature acquisition terminal is mainly composed of temperature sensors, a one-ship microcomputer and a transmit-receive unit. The six temperature sensors are uniformly distributed and arranged at moving contacts or static contacts of a high voltage handcart switch cabinet and one environmental temperature sensor is arranged in a circuit breaker room of the high voltage handcart switch cabinet. Besides, the display instrument terminal is mainly composed of a reception unit, a display instrument terminal one-ship microcomputer and a display. High potential terminals of the sensors and a ground potential terminal of the display are connected in an isolated transmission mode. Therefore, the on-line monitoring system has characteristics of accurate measurement and interference resistance.

Description

technical field [0001] The invention relates to a switch cabinet temperature monitoring system, in particular to an automatic temperature monitoring device for a high-voltage handcart switch cabinet. Background technique [0002] High-voltage handcart switchgear is a very important electrical equipment in the power system. With the development of society, the requirements for power quality are getting higher and higher, and correspondingly higher requirements are put forward for the reliability of high-voltage switchgear. The internal overheating of the switchgear has become a common problem in the use of the switchgear. Due to the airtightness of the switchgear body, in some areas with heavy loads, the temperature rise of the switchgear exceeds the standard. The temperature rise of the switchgear exceeds the standard, which directly affects the safe and stable operation of the equipment, and the overheating problem is a continuous development process. If it is not controll...

AI Technical Summary

Problems solved by technology

The internal overheating of the switchgear has become a common problem in the use of the switchgear. Due to the airtightness of the switchgear, in some areas with heavy loads, the temperature rise of the switchgear exceeds the standard.

The temperature rise of the switchgear exceeds the standard, which directly affects the safe and stable operation of the equipment, and the overheating problem is a continuous development process. If it is not controlled, the degree of overheating will continue to increase, and it will have a great impact on the performance of the insulation and the life of the equipment.

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