A method for predicting the discharge voltage of the combined air gap for helicopter live work

A technology of discharge voltage and live work, which is applied in the field of helicopter live work combination air gap discharge voltage prediction, can solve the problems of limited applicability, long cycle and high cost of the Rizk model, and achieve the effect of saving manpower and material resources
CN108414897BActive Publication Date: 2019-08-02WUHAN UNIV
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
WUHAN UNIV
Publication Date
2019-08-02

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Abstract

The present invention relates to the live working technology of power transmission lines, and in particular to a method for predicting the combined air gap discharge voltage of helicopter live working. The air gap is defined as the second gap. Through the first calculation of the electrostatic field and the extraction of the electric field feature set, input the support vector classification machine for the first prediction of the discharge voltage, determine which gap will break down first and its discharge voltage value; perform the second calculation of the electrostatic field and the electric field according to the potential change after the breakdown Feature extraction, use the support vector classification machine to predict the discharge voltage twice, determine the discharge voltage value of the post-discharge gap; compare the discharge voltage values โ€‹โ€‹of the two gaps of the first discharge and the latter discharge, and take the larger one as the discharge of the air gap of the helicopter live working combination voltage prediction. This method can replace the discharge test, save the test cost, and provide guidance for obtaining the minimum safe distance for helicopter live working.
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Description

technical field

[0001] The invention belongs to the technical field of live work on power transmission lines, and in particular relates to a method for predicting discharge voltage of a helicopter live work combined air gap. Background technique

[0002] Live work is an important means of detection, maintenance and transformation of transmission lines. Helicopter live work can reduce the physical exertion of operators and improve work efficiency. It has become an important measure for the operation and maintenance of EHV / UHV transmission lines. At present, my country's UHV transmission projects have been widely put into operation, and it has become an important technical means to use helicopters to carry out live work and maintenance of UHV transmission lines.

[0003] The platform operation method is a commonly used helicopter live working method. Generally, a working platform is installed on the belly of the helicopter, and the operator rides on the platform to directly co...

Claims

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