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Author

Wang Keqiang

Bio: Wang Keqiang is an academic researcher. The author has contributed to research in topics: Alarm device & Transformer (machine learning model). The author has an hindex of 1, co-authored 4 publications receiving 3 citations.

Papers
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Journal ArticleDOI
TL;DR: In this paper, a monitoring model of overhead line in threedimensional space is constructed, and based on oblique parabola equation, the algorithm for detecting the crossed span distance based on three-dimensional inclination under the windless and windy conditions is studied, which are applied to the on-line monitoring system.
Abstract: In order to safely operate the electric transmission lines, to monitoring the crossed span distance of the overhead lines is one of the key measures. Since the current measurement methods of crossed span distance of overhead line has high cost, low accuracy, and traditional measurement methods has low efficiency, the monitoring model of overhead line in threedimensional space is constructed, and based on oblique parabola equation. The algorithm for detecting the crossed span distance based on three-dimensional inclination under the windless and windy conditions is studied, which are applied to the on-line monitoring system. Through actual measurement, the accuracy and practicability of the three-dimensional model and algorithm are verified which provides reliable algorithm support for traverse crossing distance measurement and on-line monitoring system, and improves work efficiency.

2 citations

Patent
15 Feb 2019
TL;DR: In this article, the authors proposed an anti-theft alarm device for transformer, which includes four transformer supporting pillars, transformer, two infrared light spot detection alarm units, planar mirror group, microcomputer control unit, power supply unit and alarm units.
Abstract: Anti -theft alarm device for transformer belongs to the power engineering technology field, and in order to solve the stolen problem of transformer, the device includes four transformer supporting pillars, transformer, two infrared light spot detection alarm units, planar mirror group, microcomputer control unit, power supply unit and alarm units, the transformer sets up on four transformer supporting pillars fixedly, and the transmitting terminal of infrared light spot detection alarm unit is organized the triple reflection through planar mirror and is received by the receiving terminal of infrared light spot detection alarm unit, the infrared light spot detection alarm unit passes through electric wire and microcomputer control unit connection, and alarm unit and power supply unit pass through the electric wire respectively in the microcomputer control unit connection, the device realizes the measuring and the warning of the displacement of transformer high sensitivity, will extensively be adopted in electric power system, and it is huge that it promotes application prospect ten minutes.

1 citations

Proceedings ArticleDOI
01 Aug 2019
TL;DR: In this article, the authors proposed a charged detection method of porcelain insulator in single asymmetric transmission line and compared it with the traditional detection method in terms of detection efficiency and accuracy.
Abstract: Because the traditional charged detection method of porcelain insulator in single asymmetric transmission line has the disadvantages of low detection efficiency and low detection accuracy, the research on the charged detection method of porcelain insulator in single asymmetric transmission line is proposed. The data is collected by the AD acquisition channel, processed by the limiting filtering method and the fitting algorithm, and then transmitted by the asynchronous transmission interface. After that, the data is detected by the NFT1230 single-chip microcomputer, thereby the research on the charged detection method of porcelain insulator in single asymmetric transmission line is achieved completely. The comparison experiment between the charged detection method of porcelain insulator in single asymmetric transmission line and the traditional detection method is carried out. The experimental results show that the charged detection method of porcelain insulator is about 25% higher than the traditional method in terms of detection efficiency. In terms of detection accuracy, the proposed charged detection method of porcelain insulator is about 36% higher than the traditional method.
Patent
12 Oct 2018
TL;DR: In this paper, a transformer anti-theft alarm device is proposed, which consists of four transformer support columns, a transformer, two infrared spot light detection and alarm units, a plane mirror group, and a microcomputer control unit, a power supply unit and an alarm unit.
Abstract: The invention discloses a transformer anti-theft alarm device, and belongs to the technical field of electric power engineering, and solves the problem of transformer theft. The device consists of four transformer support columns, a transformer, two infrared spot light detection and alarm units, a plane mirror group, and a microcomputer control unit, a power supply unit and an alarm unit; the transformer is arranged on the four transformer support columns, and the emission end of the infrared light spot detection alarm unit is received by the receiving end of the infrared light spot detectionalarm unit by triple reflections of the plane mirror group; the infrared light spot detection alarm unit is connected with the microcomputer control unit through the electric wire, and the alarm unitand the power supply unit are respectively connected with the microcomputer control unit through electric wires. The device realizes the detection and alarm of high-sensitivity displacement of the transformer, and is bound to be widely adopted in the power system, and the popularization and application prospect is very large.

Cited by
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Journal Article
TL;DR: The result indicates that the developed sag online monitoring system is accurate in measurement, with a maximum relative error of less than 2%.
Abstract: Conductor sag is a key factor of determining the safe operation of the line.The sag online monitoring is significant for implementing smart transmission line.A sag online monitoring system based on the relationship between conduct sag and axial tension was proposed.The prototype of the developed system was installed on-site and many raw data were collected and verified.The result indicates that the system is accurate in measurement,with a maximum relative error of less than 2%.It can fully meet the requirements of online monitoring for operation and maintenance.

2 citations

Journal Article
TL;DR: In this paper, a transmission line conductor temperature-sag new model is proposed to solve sag with steel-core characteristics, and the error of sag calculation is less than the other two methods; application of the new model will help ensure safe operation of transmission line capacity increasing.
Abstract: To ensure the security of transmission line capacity-increasing running,research of conductor temperature and sag relationship has a very realistic meaning. Some common methods,like state equation and strain-summation method,are only suitable for conductor with a lower temperature range. Once the conductor temperature is too high,aluminum strands have mutant mechanical characteristics because of radial expansion,which will cause sag calculation results error. Transmission line conductor temperature-sag new model addresses the issues raised. Experimental results show that,while the conductor temperature is high,new model continues to solve sag with steel-core characteristics, the error of sag calculation is less than the other two methods; application of the new model will help ensure safe operation of transmission line capacity-increasing.

1 citations

Patent
12 Oct 2018
TL;DR: In this paper, a transformer anti-theft alarm device is proposed, which consists of four transformer support columns, a transformer, two infrared spot light detection and alarm units, a plane mirror group, and a microcomputer control unit, a power supply unit and an alarm unit.
Abstract: The invention discloses a transformer anti-theft alarm device, and belongs to the technical field of electric power engineering, and solves the problem of transformer theft. The device consists of four transformer support columns, a transformer, two infrared spot light detection and alarm units, a plane mirror group, and a microcomputer control unit, a power supply unit and an alarm unit; the transformer is arranged on the four transformer support columns, and the emission end of the infrared light spot detection alarm unit is received by the receiving end of the infrared light spot detectionalarm unit by triple reflections of the plane mirror group; the infrared light spot detection alarm unit is connected with the microcomputer control unit through the electric wire, and the alarm unitand the power supply unit are respectively connected with the microcomputer control unit through electric wires. The device realizes the detection and alarm of high-sensitivity displacement of the transformer, and is bound to be widely adopted in the power system, and the popularization and application prospect is very large.