Efficient simulation device for partial discharge modes under various faults in high-voltage switch cabinet

Abstract

The invention discloses an efficient simulation device for partial discharge modes under various faults in a high-voltage switch cabinet. The efficient simulation device mainly comprises an insulation casing, a switch, a partial discharge mode generator, a high-speed power amplification unit, an impulse transmitting antenna and a chargeable battery, wherein the chargeable battery is connected with an external charger through a socket fixed on the insulation casing. The efficient simulation device for the partial discharge modes under the various faults in the high-voltage switch cabinet can simulate an electrical impulse signal generated by partial discharge and an impulse sequence signal corresponding to partial discharge modes of hole, surface, corona and the like, improve examination and evaluation methods of current various geoelectric wave measuring instruments and fill the blank in the aspects of generation of partial discharge signals and identification of defect modes. The casing can resist high voltage, and the total weight of the device is smaller than 500 g, so that the device has the characteristics of convenience in carrying and safety, and the device is particularly suitable for a power enterprise to develop work of a partial discharge study of the high-voltage switch cabinet, examination of a commercial testing instrument, training of worker skills, and the like.

Description

technical field [0001] The invention relates to the intelligent technology of electric power equipment and its application field, in particular to a high-efficiency simulation device for partial discharge modes under various faults in high-voltage switch cabinets. Background technique [0002] The switchgear is an important equipment of the power system, and its safe operation has a great influence on the reliability of the power system. Once a failure occurs, the equipment itself will be damaged, the user will be interrupted by a power outage, and sometimes the personal safety of the operating personnel will be endangered. The non-intrusive internal partial discharge monitoring technology of high-voltage switchgear equipment based on ground wave measurement has been widely used in power companies in Europe, Southeast Asia and other countries and regions since 1990. By placing ground wave sensors on the surface of these devices for short or long periods of time, and measuri...

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Problems solved by technology

[0003] At present, power companies are facing several problems to be solved in carrying out related work: 1) When purchasing products, in order to select and evaluate the performance of products, it is necessary to make a variety of defect models, and apply high voltage to the high-voltage switchgear to stimulate discharge; The randomness of the discharge signal is difficult to accurately reproduce, and the reliability of the test cannot be ensured, which affects the objectivity and fairness of the test; 2) At present, new products have gradually added functions such as partial discharge mode testing, especially for fixed installations. There is no suitable assessment method for monitoring products; 3) Geoelectric wave monitoring technology, as a new monitoring method, electric power workers need to receive training at training bases and on-site, and need safe and efficient training tools

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