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Electric signal measuring device for high-voltage overhead line

A high-voltage overhead line and measuring device technology, applied in the direction of measuring devices, measuring electricity, measuring electrical variables, etc., can solve the problems of complex structure and high cost, and achieve the effect of small size, light weight, and reduced floor space

Inactive Publication Date: 2022-03-11
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide an electrical signal measuring device for high-voltage overhead lines, so as to solve the problem of complex structure and high cost of the capacitive voltage division type voltage transformer used for measuring the voltage of high-voltage overhead lines in the prior art

Method used

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  • Electric signal measuring device for high-voltage overhead line
  • Electric signal measuring device for high-voltage overhead line
  • Electric signal measuring device for high-voltage overhead line

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0022] Such as figure 1 As shown, this embodiment includes an equipotential shielding electrode 1 whose axis is left and right horizontal. The interior of the equipotential shielding electrode 1 is hollow, and the left and right ends of the axis are end walls. The center of the end wall is respectively provided with openings, and the high-level overhead wire 4 coaxially penetrates the equipotential shielding electrode 1 through the openings along the left and right directions.

[0023] The left and right ends of the equipotential shielding electrode 1 are respectively provided with metal connectors 3, and each metal connector 3 is electrically connected with a voltage equalizing ring 2, and each metal connector 3 is respectively ring-sleeved and fixed at the corresponding position The high-voltage overhead line 4, and the metal connector 3 itself is in...

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Abstract

The invention discloses an electric signal measuring device for a high-voltage overhead line, which comprises an equipotential shielding electrode for the high-voltage overhead line to penetrate through, and is characterized in that the equipotential shielding electrode and the high-voltage overhead line are electrically connected at one penetrating position; a notch is cut in the side wall of the equipotential shielding electrode, a voltage measurement sensing electrode is connected to the notch in an insulating manner, a sampling resistor is arranged in the equipotential shielding electrode, and the sampling resistor is electrically connected with the equipotential shielding electrode and the voltage measurement sensing electrode; and the signal acquisition unit is electrically connected with the two ends of the sampling resistor and is in communication connection with the outside. The device is simple in overall structure, small in occupied space and low in measurement cost, and electromagnetic induction measurement can be carried out on voltage and current signals of multiple positions of the high-voltage overhead line at the same time.

Description

technical field [0001] The invention relates to the field of electric parameter measuring devices for high-voltage overhead lines, in particular to an electrical signal measuring device for high-voltage overhead lines. Background technique [0002] Current and voltage are two important parameters in the grid, which can be used to characterize the operating state of the grid. The accurate measurement of current and voltage is of great significance to the parameter evaluation of transmission lines, fault location and relay protection, and plays a very important role in the safe and stable operation of the power grid. With the development of the smart grid and the continuous improvement of the voltage level of the power system, the requirements of the power system for current and voltage measurement are also gradually increasing. [0003] At present, in power grids with a voltage level of 220kV and above, the most commonly used voltage measurement equipment is a capacitor volt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00G01R31/08G01R19/00
CPCG01R31/00G01R31/085G01R19/00Y04S10/52
Inventor 卢斌先黄未啸刘鹏龙薛涛
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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