Testing method for on-line monitoring internal insulation incipient fault of electric equipment

A technology for power equipment and internal insulation, applied in the direction of testing dielectric strength, etc., can solve problems such as inability to effectively prevent sudden failure of power equipment and affect power supply
CN1605879AInactive Publication Date: 2005-04-13欧阳南尼
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
欧阳南尼
Publication Date
2005-04-13
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a testing method for on-line monitoring internal insulation incipient fault of electric equipment, wherein a sensing unit is employed for collecting collision high-frequency heavy current signal from power transmission bus wire and earthed sheathed tube port, the correlation between the waveform, amplitude and time of the collected shock transient signal is utilized to select the excitation signal and response signal of the power equipment transfer function and establish the internal transfer function curve of the power equipment.
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Description

technical field

[0001] The invention relates to a test method for on-line monitoring of internal insulation hidden dangers of power equipment in a power transmission and transformation system, which is suitable for online state maintenance of power equipment (such as: transformers, transformers, lightning arresters, and circuit breakers) in power system 35kV-150kV substations. monitor. Background technique

[0002] At present, domestic and foreign researches on online monitoring technology for internal insulation hazards of power equipment have been carried out for many years. People have developed a variety of technical methods for online detection of internal insulation hazards of power equipment, such as: temperature method, pressure method, chromatography, etc. method, ultrasonic method, pulse current method, ultra-high frequency method, etc. However, none of the currently adopted methods can effectively prevent sudden failures of electrical equipm...

Claims

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