System for monitoring contact temperature of high-voltage switch cabinet on line

A high-voltage switchgear and monitoring system technology, applied to thermometers, signal transmission systems, and parts of thermometers, etc., can solve problems such as unreliable work, achieve high reliability, broaden the application range, and strong anti-interference ability.

Active Publication Date: 2009-11-11
巨元智能电气(浙江)有限公司
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

Its advantage is that the position of the measurement point is not limited, and the installation and arrangement of the sensor is flexible; the disadvantage is that the sensor is not reliable in the en

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  • System for monitoring contact temperature of high-voltage switch cabinet on line
  • System for monitoring contact temperature of high-voltage switch cabinet on line
  • System for monitoring contact temperature of high-voltage switch cabinet on line

Examples

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Example Embodiment

[0025] The present invention will be described in detail below with reference to the drawings and specific embodiments.

[0026] The structure of an embodiment of the monitoring system of the present invention, such as figure 1 As shown, it includes a repeater 2, a converter 3, and a local workstation 4 connected in sequence. The repeater 2 is also connected to multiple monitoring extensions 1. The repeater 2 uses an RS-485 repeater, and the converter 3 Use RS-485 converter.

[0027] The structure of the monitoring extension 1 in the monitoring system of the present invention, such as figure 2 As shown, the microcontroller 5 is included. The microcontroller 5 is connected to the LCD 6, the key module 7, the temperature and humidity sensor 8, the serial communication interface 9, the wireless receiving module 10, the buzzer 13, the indicator light 14 and the relay 15. The wireless receiving module 10 is connected to the 9 wireless temperature sensor nodes 11 wirelessly, and the 9...

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Abstract

The invention provides a system for monitoring the contact temperature of a high-voltage switch cabinet on line. The system comprises a repeater, a converter and a local workstation, which are connected in sequence, wherein, the repeater is connected with a plurality of slave monitoring units respectively; and the RS-485 standard is applied to the repeater and the converter respectively. The monitoring system of the invention can monitor the temperature rise value of the contact in the high-voltage switch cabinet on a real-time basis under the conditions of high voltage, high temperature and high magnetic field intensity; by detecting the contact temperature of the high-voltage switch cabinet, the temperature rise value obtained through the comparison between the temperatures of an isolated contact and the high-voltage switch cabinet body can be comprehended on a real-time basis, and a real-time alarm can be triggered, thereby avoiding the power failure caused by the isolated contact which is subjected to excessively high temperature rise or even burnt; and meanwhile, the system of the invention can carry out the following operations on data from each sink node: collection, storage, query and report output.

Description

technical field [0001] The invention belongs to the technical field of status monitoring of power transmission and transformation equipment, and relates to an online monitoring system for the contact temperature of a high-voltage switch cabinet. Real-time alarm to avoid excessive temperature rise of isolation contacts, or even burnt out, resulting in power failure. Background technique [0002] At present, trolley-type switch cabinets are commonly used in power transmission and transformation systems, and the switch cabinets and circuit breakers are connected through plugs. If the contacts are in poor contact, the contact resistance of the contacts will increase, the temperature of the contacts will rise, and even the contacts will be burned, resulting in a power outage in the power transmission and transformation system. This phenomenon is particularly prominent in high-current switch cabinets such as incoming cabinets, and has a great impact. In order to avoid power tran...

Claims

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Application Information

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IPC IPC(8): G01K1/02G01K7/00G08C17/02G01K1/024
Inventor 黄新波田毅
Owner 巨元智能电气(浙江)有限公司
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