T/CES 113-2022 Active Group standards

T/CES 113-2022 Guidelines for Field Application of Infrared Thermal Imaging Detection for GIS Equipment

Publish Date: 2022-06-22 Implement Date: 2022-06-24 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/CES 113-2022

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: -

ICS Name: Other equipment related to the transmission and distribution networks

Publish Date: 2022-06-22

Implement Date: 2022-06-24

Scope

Scope: This document specifies the requirements for infrared thermal imaging on-site inspection of GIS equipment, inspection sites, inspection cycles, inspection steps, and judgment methods. This document applies to infrared thermal imaging on-site inspection of GIS (including HGIS) equipment with voltage levels of 126 kV to 1100 kV. Infrared on-site inspection of GIL and tank circuit breakers can be carried out as a reference; Main technical content: Infrared thermal imaging inspection is one of the most effective live inspection methods for GIS equipment operation, which can detect internal joint overheating, overheating caused by tank body eddy currents, and overheating of cable lead wires. However, the existing DL/T 664 does not mention the identification method of GIS equipment heating defects and does not provide a method for judging their severity. In order to promote the infrared thermal imaging inspection and diagnostic methods of GIS equipment, this document is specially prepared. This document specifies the requirements for infrared thermal imaging inspection of GIS equipment, inspection sites, inspection cycles, inspection steps, and judgment methods. The internal joint overheating of GIS equipment is characterized by high hazardousness and strong concealment. Infrared thermal imaging inspection should be carried out in accordance with the requirements of precise inspection to improve the detection rate of defects. Therefore, the inspection requirements and steps mentioned in this document refer to the requirements of precise inspection in DL/T 664. At the same time, the internal joint overheating of GIS is caused by current heating, which is characterized by a rapid temperature rise. If there are contact defects caused by the failure to close the disconnecting switch, severe overheating may lead to GIS failure in a short period of time. Therefore, this document proposes that, under certain conditions, infrared thermal imaging inspection should be ca