Abstract
The mechanical strength of old 66kV disconnect switches (V-type porcelain column type) in outdoor substations has been affected by weather and daily operation for a long time, and the change of internal force of porcelain column caused by external force during open and closed circuit operation is very likely to cause porcelain column fracture, which poses a safety hazard to the safety of people and equipment. In order to ensure the safety of personal and equipment during operation and maintenance of the switch, this paper proposes a kind of insulation protection frame for 66kV disconnecting switch V-type porcelain column fracture. The simple structure, flexible operation, safety and reliability of this protective frame have been proved by practice that after using this protective frame in work, the efficiency of work is obviously improved and the safety of personal and equipment is effectively guaranteed.
Highlights
There are still a certain number of V-type porcelain column disconnect switches in the operating 66kV substations
In response to the above problem, this paper proposes an insulation protection frame for 66kV disconnector switch V-post fracture
This insulating protective frame is designed according to the characteristics of the reversing operation of the site operator and the operation requirements of the 66kV disconnecting switch V-type porcelain column, combined with the safety distance between the human body and the 66kV live body during the operation of the operator
Summary
There are still a certain number of V-type porcelain column disconnect switches in the operating 66kV substations. The developed protective device has been tested and verified to meet the requirements of various regulations and standards and various technical conditions for operating 66kV disconnecting switch V-type porcelain column, and has a simple structure, convenient construction, which is safe and reliable. Porcelain column, combined with the operation of the human body and 66kV charged body in the operation of various types of safety distance, design both in line with various types of regulations, standard requirements and meet the operation of isolation switch V porcelain column of various technical conditions, simple and durable, convenient construction, safe and reliable protection device
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