A dual-probe transmission line non-contact current measuring device and its measuring method

Abstract

The invention discloses a double-probe transmission line non-contact current measurement device and a measurement method thereof, which include a near-end integrated probe and a far-end integrated probe, which are installed on a support frame and located on a transmission line. Below the line, both the near-end integrated probe and the far-end integrated probe are optical current sensor probes, which are connected to the optical fiber connector through optical fiber, and the optical fiber connector is connected to the optical fiber junction box in the room through the optical fiber cable. The optical fiber junction box is facing the light source and photoelectric detection , the photodetector is connected to the signal processing terminal. The invention is safe and reliable, and does not affect the insulation performance of line equipment; it has the advantages of high sensitivity and large measuring range, and has a wider application range; it can measure various types of current, including DC current, AC current and the impact of power grid failure High current; integrated design, easy and reliable installation; wide frequency response, good transient performance; small size, no iron core, high and low voltage isolation, suitable for digital substation requirements.

Description

technical field [0001] The invention relates to a double-probe transmission line non-contact current measurement device and a measurement method thereof, belonging to the technical field of transmission line non-contact current measurement equipment. Background technique [0002] In recent years, power grid companies have actively taken a number of measures to fully promote the construction of the three major power projects of "rural power grid upgrading and transformation", "low-voltage centralized reading and smart meter full coverage", and "power supply station construction". The management goal of “end-region integration” meets the work requirements of lean management. In the construction of the "low-voltage centralized reading and full coverage of smart meters", the remote low-voltage power centralized reading adopts the concentrator method. The function of the concentrator is to first collect the data of a batch of electricity meters through carrier wave or 485 communi...

AI Technical Summary

Problems solved by technology

At present, power supply enterprises have installed as many as one million concentrators, smart meters and low-voltage centralized reading equipment. In actual work, it is difficult for the first-line meter reading and operation and maintenance personnel of the distribution network to locate the location of related equipment accurately and quickly on site. Contradiction between measurement sensitivity and measurement range

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