Partial discharge detection system for intermediate joint of 10kV insulated tubular bus

A technology for partial discharge detection and intermediate joints, which is applied in the direction of measuring electricity, measuring devices, and measuring electrical variables, etc., can solve the problems that the research on partial discharge detection of insulating tubular busbars and field work have not yet been carried out, and achieve friendly interface and rich decision-making information , information display intuitive effect

Inactive Publication Date: 2016-12-21
STATE GRID TIANJIN ELECTRIC POWER +1
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Problems solved by technology

However, the research and field work on partial discharge detection for the...

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  • Partial discharge detection system for intermediate joint of 10kV insulated tubular bus
  • Partial discharge detection system for intermediate joint of 10kV insulated tubular bus

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Embodiment Construction

[0013] Embodiments of the present invention are described in further detail below in conjunction with the accompanying drawings:

[0014] A 10kV insulating tubular bus intermediate joint partial discharge detection system, such as figure 1 and figure 2 As shown, it includes a differential detection circuit, a filter amplification unit, a high-speed data acquisition card, a computer host and a touch screen display. The differential detection circuit is composed of a capacitive sensor and a detection impedance. The capacitive sensor is laid on both sides of the intermediate joint of the tubular bus bar with metal foil electrodes, and an equivalent capacitance is formed between the outer sheath and the grounding screen. The capacitance on both sides and the detection The impedance forms a differential detection loop. When a partial discharge occurs in the tubular busbar, after it propagates to the two capacitors, the formed signal is canceled on the detection impedance; when a...

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Abstract

The invention relates to a partial discharge detection system for an intermediate joint of a 10kV insulated tubular bus. The partial discharge detection system is characterized by comprising a differential detection loop, a filtering and amplifying unit, a high-speed data acquisition card, a computer host and a touch screen display, wherein the differential detection loop is formed by connecting a capacitive sensor and a detection impedor, the capacitive sensor adopts metal foil electrodes which are laid on two sides of the intermediate joint of the tubular bus, and an equivalent capacitor is formed between an outer layer sheath and a grounding shield; and an output end of the differential detection loop is connected with the filtering and amplifying unit for carrying out noise suppression and signal amplification, an output end of the filtering and amplifying unit is connected to the high-speed data acquisition card installed in the computer host, and partial discharge analysis software is installed in the computer host. The partial discharge detection system picks up a partial discharge signal based on the capacitive sensor and the differential detection loop, achieves the effect of providing abundant decision-making information for technicians by utilizing the partial discharge detection function of the intermediate joint of the tubular bus, and is convenient to carry out construction and maintenance operations on the tubular bus.

Description

technical field [0001] The invention belongs to the technical field of insulating tubular busbars, in particular to a partial discharge detection system for intermediate joints of 10kV insulating tubular busbars. Background technique [0002] With the increasingly widespread application of insulating tubular busbars, the research on its detection technology becomes more important. Insulated tubular bus has the advantages of large carrying capacity, good insulation performance, high mechanical strength, good heat dissipation, low temperature rise, anti-interference, long life, etc. At present, many power supply companies are increasingly using insulating tubular bus as the main transformer , The connecting conductor between the low-voltage side and the power distribution facility, in order to improve the effective utilization rate of the busbar material, enhance the mechanical strength of the busbar, prevent the person from touching the live busbar, metal objects falling on t...

Claims

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Application Information

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IPC IPC(8): G01R31/12
CPCG01R31/1272
Inventor 张黎明刘继平吴东周文涛满玉岩李旭孙昭郗晓光栗薇方琼郭勇徐力曹梦
Owner STATE GRID TIANJIN ELECTRIC POWER
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