Online monitoring device and method for insulation characteristic of cable head

A monitoring device and cable head technology, which is applied in the direction of measuring devices, measuring electricity, and measuring electrical variables, etc., can solve the problems of single-phase ground fault, unreliable contact at the installation place, temperature rise, etc., and achieve the effect of reducing fault loss

Inactive Publication Date: 2019-02-22
HOHAI UNIV CHANGZHOU
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Problems solved by technology

[0002] According to the authoritative data analysis of the power industry, 90% of the failures of the fully inflated and fully insulated switchgear are caused by poor contact at the connection of the incoming and outgoing cables. The cable cannot detect the reliability of the installation, so the contact at t

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  • Online monitoring device and method for insulation characteristic of cable head

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Embodiment Construction

[0013] The online monitoring device and method for the insulation characteristics of the cable head proposed by the present invention collects the surface temperature of the cable joint in real time, evaluates the insulation characteristics of the cable elbow head according to the surface temperature rise of the elbow cable head and the ambient temperature, and can find out accurately and timely Its hidden trouble of failure helps to reduce failure loss.

[0014] The present invention will be further described below in conjunction with the drawings. The following embodiments are only used to illustrate the technical solutions of the present invention more clearly, and cannot be used to limit the protection scope of the present invention.

[0015] The online monitoring device for the insulation characteristics of the cable head provided by the embodiment of the present invention detects the surface temperature data of the cable head in real time through a temperature sensor installe...

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Abstract

The invention discloses an online monitoring device and method for the insulation characteristic of a cable head. The device comprises a receiving terminal and a temperature measuring module communicatively connected with the receiving terminal. The receiving terminal includes a microprocessor connected with an ambient temperature detecting module. The microprocessor collects the temperature of the outer surface of the cable head in real time through the temperature measuring module, calculates a temperature rise of the cable head, and carries out insulation characteristic determination of thecable head by combining the ambient temperature outputted by the ambient temperature detecting module and a predetermined insulating characteristic. According to the invention, the surface temperature of the cable joint is collected in real time and the insulation property of the cable head is evaluated according to the temperature rise of the cable head surface, the ambient temperature and the predetermined insulation characteristic, so that the potential safety hazard can be discovered timely and accurately and thus the fault losses are reduced.

Description

Technical field [0001] The invention relates to an online monitoring device and method for the insulation characteristics of a cable head, and belongs to the technical field of power monitoring. Background technique [0002] According to the authoritative data analysis of the power industry, 90% of the failures of the fully inflated and fully insulated switchgear are caused by poor contact at the cable connections of the incoming and outgoing cables. The main reason is that the on-site personnel did not strictly follow the cable specifications for installation. The cable cannot detect the reliability of the installation, so the contact at the installation site is unreliable, and the temperature rise of the contact part during operation exceeds the allowable range of the national regulations, which makes the cable terminal insulation aging, and discharges and causes single-phase ground faults or inter-phase short circuits. Summary of the invention [0003] The purpose of the presen...

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Application Information

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IPC IPC(8): G01R31/12
CPCG01R31/1272
Inventor 赵浩然张金波赵发东韩昕秀王虹霁宋佳佳
Owner HOHAI UNIV CHANGZHOU
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