Rapid response magnetically controlled reactor device with novel voltage source control

Abstract

The present invention relates to a rapid response magnetically controlled reactor device with novel voltage source control, and the defect that the response speed of an existing magnetically controlled reactor is slow and a voltage flickering governance requirement can not be satisfied is solved. The device comprises a magnetically controlled reactor body formed by an iron core with a small cross section structure and four cross-connected parallel coils wound around the iron core, an excitation control unit with an auxiliary high voltage power supply and a controller. The input ends ac12 and ac22 of the excitation control unit are connected to the low-order taps ac1 and ac2 of the magnetically controlled reactor body to form a two-quadrant voltage source. An excitation control point unit and the magnetically controlled reactor body taps are connected to a two-quadrant voltage source. Through voltage closed-loop control, the two-quadrant voltage source is used as the auxiliary high voltage source of the excitation control unit, the rapid adjustment output of the magnetically controlled reactor is realized, the voltage flickering governance and the reactive power compensation of rapid change load are solved, and the reactive power output requirements of existing wind power generation, photovoltaic power generation and other power systems in low voltage through conditions can be satisfied.

Description

technical field [0001] The invention relates to the field of reactive power compensation, in particular to a novel voltage source controlled fast-response magnetron reactor device. Background technique [0002] A magnetically controlled reactor (MCR for short) is a device that uses the principle of DC magnetization to magnetize the iron core with an additional excitation current to change the magnetic permeability of the iron core to achieve continuously adjustable reactance value. The dynamic reactive power compensation device (MCR type SVC) composed of a magnetically controlled reactor combined with a capacitor bank has become one of the important technologies for reactive power compensation in power systems. [0003] Compared with the TCR type SVC, the traditional magnetron reactor type SVC has significant advantages such as high reliability, small footprint, maintenance-free, etc., and has strong competitiveness in cost; but due to the traditional magnetron reactor type ...

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Problems solved by technology

[0004] The invention solves the defects that the existing magnetron reactor has a slow response speed and cannot meet the requirements for voltage flicker control, and provides a novel voltage source-controlled fast-response magnetron reactor device, which takes electricity from the tap of the reactor body, and The rectification module with switchable rectification state and inverter state supplies power to the excitation control circuit to realize the rapid adjustment of the output of the magnetic control reactor, combined with the fixed capacitor bank, to solve the problem of voltage flicker control

[0005] The present invention also solves the defects of slow response speed of existing magnetron reactors and poor compensation effect on tracking fast-changing loads, and provides a novel voltage source-controlled fast-response magnetron reactor device, which taps from the reactor body Take power, and supply power to the excitation control circuit through the rectification module with switchable rectification state and inverter state, realize the rapid adjustment output of the magnetic control reactor, and solve the reactive power compensation of the rapidly changing load

[0006] The invention also solves the defect that the existing magnetron reactor has a slow response speed and cannot meet the requirement of reactive power output under the low-voltage ride-through condition required by the current power system, and provides a novel voltage source-controlled fast-response magnetron reactor The device takes power from the tap of the reactor body, and supplies power to the excitation control circuit through the rectification module that can switch between the rectification state and the inverter state, so as to realize the rapid adjustment output of the magnetic control reactor, and can meet the requirements of current wind power generation, photovoltaic power generation and other power generation. Reactive power output requirements under low voltage ride-through conditions required by the system

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