Anti-interference infrared temperature measurement method and apparatus thereof

Abstract

The invention, which can be used for various voltage grade GIS equipment to on-line monitor internal buses and joints so as to provide a monitoring means for safe operation of the GIS equipment, relates to an anti-interference infrared temperature measurement method and an apparatus thereof. The apparatus comprises an infrared temperature sensor and GIS equipment which is full of SF6 seal gas under a pressure of about 0.4MPa. The invention is characterized in that: a seal tank shell of the GIS equipment has a window which is provided with chalcogenide glass; positions of the measured buses and joints are coated with paints which can increase infrared emissing ability; the infrared temperature sensor, which is installed out of the seal tank, on-line collects temperature signals of the measured buses and joints through the chalcogenide glass window of the seal tank; accurate temperature values of the measured buses and joints can be acquired through corrections made by software. An anti-electromagnetic interference effect is good.

Description

technical field [0001] The invention relates to a method and device for measuring the temperature of the internal bus bar and connector of a gas-insulated combined electrical equipment (GIS), specifically a high-voltage SF 6 The invention discloses an anti-interference infrared measurement method and device for the temperature rise of a bus bar or a joint in a gas-tight tank, belonging to the technical field of high-voltage electrical complete equipment measurement and protection. Background technique [0002] On-line monitoring of the temperature changes of the busbar and connectors of GIS equipment during operation is a further measure to ensure the safe operation of this type of high-voltage electrical equipment. At the same time, online monitoring must not affect the normal operation of the equipment. The heating element is at high voltage and filled with SF of about 0.4MPa 6 The gas-sealed tank needs special measurement methods and devices to complete. At present, ther...

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Problems solved by technology

[0004] Chinese invention patent "A Temperature Monitoring Device for Contacts of High Voltage Isolation Switch" (application number: 200910074969.2 application date: 2009-07-21) and utility model patent "online temperature continuous monitoring system" (application number: 200920087083.7 application date : 2009-07-02) The disclosed temperature measurement methods all use infrared temperature sensor to measure temperature, but can only measure temperature with switch contacts exposed to the air; utility model patent "online infrared temperature measurement device for high voltage cabinet" (Application No.: 200520052061.9 Application Date: 2005-09-30) is only an infrared temperature measuring device exposed in the air at room temperature, and a new type of anti-interference infrared temperature measuring method and device becomes necessary

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