Magnetic controllable reactor excitation current monitoring device and method based on Hall transformer

Abstract

The invention relates to the technical field of a magnetic controllable reactor and particularly relates to a magnetic controllable reactor excitation current monitoring device and method based on a Hall transformer. The device includes a Hall sensor HW1, a Hall sensor HW2, a Hall sensor HW3, a sampling conditioning board, a first optical transceiver, a second optical transceiver and a controller,wherein the Hall sensor HW1 is mounted between a cathode of a thyristor K1 and a tail end of a lower winding, the Hall sensor HW2 is mounted between a cathode of a thyristor K2 and a tail end of an upper winding, the Hall sensor HW3 is mounted between a first end of the upper winding and an anode of a diode D1, the sampling conditioning board includes an adjustment filter circuit, and an output end of the adjustment filter circuit is connected with the controller through the first optical transceiver and the second optical transceiver. The device is advantaged in that a problem of secondary side current distortion caused by long-term magnetic biasing during ordinary electromagnetic current transformer CT measurement is avoided, a secondary circuit is easily isolated from the primary sidehigh voltage, and easy mounting, low cost and high measurement accuracy are realized.

Description

technical field [0001] The invention relates to the technical field of magnetron reactors, in particular to a Hall transformer-based magnetron reactor excitation current monitoring device and method. Background technique [0002] The full name of magnetically controlled reactors is magnetic valve controllable reactor, referred to as MCR, which is a shunt reactor with adjustable capacity, which is mainly used for reactive power compensation of high-voltage and ultra-high-voltage power systems. Compared with other types of SVC, magnetron-based MSVC has the advantages of small loss, small harmonics, fast response, high voltage resistance, high reliability, and low cost. The magnetic control reactor is composed of the control part and the reactor body, such as figure 1 As shown, it is a schematic diagram of the structure of a single-phase magnetically controlled reactor. The reactor is composed of upper and lower half core columns with windings of N / 2 symmetrically wound respec...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is: the technical problem of poor isolation and large volume of the excitation current monitoring device of the magnetic control reactor

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