Voltage measuring device, voltage measuring method, and storage medium
A voltage measurement and current component technology, which is applied in the direction of measuring devices, measuring electrical variables, and only measuring voltage, can solve problems such as insulation damage of the line to be tested, low voltage efficiency, and bulky voltage transformers, and avoid wiring and dismantling. Line work, easy installation effect
Active Publication Date: 2021-09-07
CHINA SOUTHERN POWER GRID DIGITAL GRID RES INST CO LTD +1
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Problems solved by technology
[0004] However, the existing voltage measurement method requires wiring and disconnection operations, and the volume of the voltage transformer is large, resulting in low voltage measurement efficiency, which may also cause insulation damage to the line to be tested, so the safety is low
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[0060] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.
[0061] The voltage measurement device provided by the application is applicable to the technical field of power system measurement, and is used for voltage detection of the power system. The voltage measurement device in this embodiment can realize non-contact voltage measurement, improve the efficiency and safety of voltage detection, and improve the accuracy of voltage detection.
[0062] In the prior art, for the voltage measurement of the transmission line of the power system, the contact voltage measurement method is usually used, that is, it is necessary to connect t...
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The invention relates to a voltage measuring device, a voltage measuring method and a storage medium, the voltage measuring device comprises a probe module and a measuring unit, the probe module movably sleeves the outer insulation surface layer of an alternating-current power transmission line, the surface, opposite to the alternating-current power transmission line, of the probe module is provided with a metal electrode, the metal electrode is electrically coupled with the alternating-current power transmission line to form a coupling capacitor, and then forms an electrical loop with an inductance element, a resistance element and a reference signal source in the measuring unit; a processor controls the reference signal source to input reference voltage signals with different frequencies to the electrical loop, determines the resonant frequency of the electrical loop according to the current of the electrical loop under the reference voltage signals with different frequencies, and determines the voltage of the alternating-current transmission line according to the first current component amplitude of the electrical loop and the resonant frequency. Non-contact measurement of the voltage of the alternating-current power transmission line can be realized, the installation is simple, the voltage measurement efficiency and safety can be improved, and the voltage measurement accuracy of the alternating-current power transmission line is improved.
Description
technical field [0001] The present application relates to the technical field of power system measurement, in particular to a voltage measurement device, a voltage measurement method and a storage medium. Background technique [0002] In order to ensure the normal operation of the power system, it is usually necessary to monitor the voltage and current of the transmission line of the power system to ensure the stable operation of the power system or early warning of faults. [0003] In the traditional technology, most of the voltage transformers are used to monitor the voltage of the transmission line. Specifically, in the case of power failure, the insulation layer at the reserved node of the line to be tested is removed, and the primary side of the voltage transformer is connected to the The wires inside the insulating layer are connected. After the power is applied, the voltage of the line to be tested is calculated by measuring the voltage on the secondary side of the vo...
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IPC IPC(8): G01R19/00
CPCG01R19/0084G01R19/2513G01R15/16G01R15/144G01R23/02
Inventor 李鹏田兵周柯王志明骆柏锋尹旭张佳明刘仲王晓明孙宏棣吕前程陈仁泽李立浧
Owner CHINA SOUTHERN POWER GRID DIGITAL GRID RES INST CO LTD