Composite sensor for 10kV distribution cable partial discharge online monitoring and positioning system

A composite sensor and power distribution cable technology, applied in the field of composite sensors, can solve problems such as consuming a lot of manpower and material resources, affecting user power supply, and low detection efficiency, achieving the effects of fast encryption and decryption, good security performance, and improved efficiency.

CN105699860AInactive Publication Date: 2016-06-22友铂空天动力(深圳)有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2016-06-22
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a composite sensor for a 10kV power distribution cable partial discharge on-line monitoring and positioning system, comprising an insulating shell, an electric field coil frame, an electric field coil, a magnetic field coil frame and a magnetic field coil, and the electric field coil frame and the magnetic field coil frame are arranged in the insulating shell Inside, the electric field coil is evenly wound on the electric field coil frame, and the magnetic field coil is evenly wound on the magnetic field coil frame. The composite sensor for the 10kV distribution cable partial discharge on-line monitoring and positioning system can not only detect high-frequency partial discharge signals, It can also locate the discharge source, which effectively improves the accuracy and reliability of positioning while reducing the complexity of the system.
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Description

technical field

[0001] The invention relates to a composite sensor used in a 10kV power distribution cable partial discharge on-line monitoring and positioning system. Background technique

[0002] The normal service life of 10kV distribution cables is about 30 years. However, since they are usually laid by direct burial, pipes, trenches and tunnels, the laying environment and usage conditions will greatly affect the service life of the cables. Coupled with tiny defects during cable manufacturing or installation, under the action of overvoltage, temperature, mechanical stress, moisture, compounds, and microorganisms, partial discharges will be triggered, resulting in cable failures. The power outages caused by cable line faults have a wide range, large economic losses, and serious social impacts. Through online monitoring of cable operation status, data collection, preprocessing, feature extraction and decision analysis of cable partial discharge data can effectively preven...

Examples

Embodiment Construction

[0016] Such as figure 1 and figure 2 As shown, the composite sensor for 10kV distribution cable partial discharge on-line monitoring and positioning system is characterized in that it includes an insulating shell 1, an electric field coil bobbin 2, an electric field coil 3, a magnetic field coil bobbin 4 and a magnetic field coil 5, and the electric field coil bobbin 2 and the magnetic field coil bobbin 4 are arranged in the insulating casing 1, the electric field coil 3 is uniformly wound on the electric field coil bobbin 2, and the magnetic field coil 5 is evenly wound on the magnetic field coil bobbin 4. The electric field coil bobbin 2 is made of high magnetic permeability material, and the electric field coil bobbin 2 is arranged in an I shape. The electric field coil 3 is an enameled wire with a wire diameter of 0.6 mm, and the number of turns of the electric field coil 3 is 100-200 turns. The magnetic field coil bobbin 4 is arranged in an I-shape. The magnetic field...