Switch cabinet partial discharge monitoring positioning system and method
A partial discharge monitoring and positioning system technology, applied in the field of power switchgear, can solve problems such as poor technical economy, interference, and switchgear cannot be promoted, and achieves the effect of reducing environmental interference and improving calculation accuracy
Pending Publication Date: 2021-02-26
安徽科瑞新电气自动化有限公司
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Problems solved by technology
Partial discharge measurement of high-voltage switchgear, the current common way is to use the ground wave measurement method to carry out inspections, this method can not measure the partial discharge quantitative analysis, the use of ultra-high frequency or ultrasonic method is susceptible to interference, the use of sound and electricity combined The method needs to use a variety of equipment, the technical economy is not good, the long-term on-line monitoring of the switchgear and the location of the partial discharge source cannot be promoted, so a system that can accurately locate the partial discharge location is urgently needed
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[0034]The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.
[0035]It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other if there is no conflict.
[0036]The present invention will be further described below in conjunction with specific embodiments, but it is not a limitation of the present invention.
[0037]figure 1 It is a schematic diagram of the electromagnetic propagation of the partial discharge part of the partial discharge monitoring and positioning sy...
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The invention discloses a switch cabinet partial discharge monitoring positioning system and method. The system comprises a plurality of collection probes and a monitoring circuit, all collection probes are electrically connected with the monitoring circuit, and the collection probes are disposed on the top wall, bottom wall, right side wall and right side wall of an inner cavity of a switch cabinet and in the middle of a backboard. When partial discharge occurs in the switch cabinet, electromagnetic pulses emitted by the discharge part are transmitted to all directions along the inner cavitywall of the switch cabinet, electromagnetic pulse signals which are emitted by the partial discharge part and transmitted along the inner cavity wall of the switch cabinet are received through the acquisition probes, the electromagnetic pulse signals are transmitted to all directions through the time intervals of the electromagnetic pulse signals received by the plurality of acquisition probes, and the main controller calculates to obtain the accurate position of the partial discharge part. The switch cabinet partial discharge monitoring positioning system provided by the invention has the effect of accurately positioning the partial discharge part in the switch cabinet.
Description
Technical field[0001]The invention relates to the technical field of power switch cabinets, in particular to a switch cabinet partial discharge monitoring and positioning system and a positioning method thereof.Background technique[0002]High-voltage switchgear is an important infrastructure in the urban power distribution network, and the stability of its operation directly affects the development of the urban economy. Condition maintenance and online monitoring are important technical means to improve the reliability of high-voltage switchgear. According to statistics, insulation and current-carrying faults account for more than half of switchgear faults. Partial discharge is an important indicator to characterize the insulation and current-carrying problems of high-voltage switchgear. Research on the partial discharge detection and online monitoring technology of high-voltage switchgear is important for improving the reliability of power supply. important meaning. The current comm...
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IPC IPC(8): G01R31/12G01S5/06G01S5/16
CPCG01R31/1227G01S5/06G01S5/16
Inventor 刘观洪
Owner 安徽科瑞新电气自动化有限公司