Excitation method of self-excited magnetic-valve controllable reactor and apparatus thereof
An excitation method and reactor technology, which are applied to output power conversion devices, conversion equipment that can be converted to DC without intermediate conversion, electrical components, etc., can solve problems such as insufficient excitation flexibility.
Active Publication Date: 2013-01-16
STATE GRID ELECTRIC POWER RES INST
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Problems solved by technology
[0007] The purpose of the present invention is to solve the problems raised by the background technology, to provide an excitation method and device for a self-excited controllable reactor, which can realize the rapid excitation and demagnetization of the reactor, and change the problem that the excitation of the self-excited magnetically controlled reactor is not flexible enough. Disadvantages, on the premise of not increasing the complexity and cost of the equipment, the method and device for greatly improving the performance of the equipment, the device has a simple structure, reliable operation, and low cost
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[0031] Markings in the attached drawings:
[0032] attached image 3 , attached Figure 4 Middle: K1—thyristor, K2—thyristor, K3—full control device IGBT;
[0033] attached Figure 8 , attached Figure 9 , attached Figure 11 , attached Figure 12 Middle: R1, R2, R3, R4—equivalent resistance, U1, U2, U3, U4—equivalent voltage source;
[0034] Among the accompanying drawings 14: 4—reactor single-phase four-column iron core, 5, 6, 7, 8—winding, 9—the small section of the middle two-column iron core.
[0035] Embodiments of the invention will be further described below in conjunction with the accompanying drawings:
[0036] Refer to attached image 3 , the technical solution of the present invention is to change the diode connected between the two columns in the wiring diagram of the traditional self-excited valve reactor into a full-control device IGBT, and the two thyristors and the IGBT are respectively controlled by three independent control lines. The different turn...
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The invention relates to an excitation method of a self-excited magnetic-valve controllable reactor and an apparatus thereof. Purposes of rapid excitation and demagnetization of a reactor can be realized. The excitation of the self-excited magnetically controlled reactor is not flexible enough. The method and the apparatus of the invention can change the above disadvantage. By using the method and the apparatus of the invention, equipment performance can be greatly raised under the condition of not increasing equipment complexity and costs. The method is characterized in that: in the excitation method, a diode connecting two columns in a traditional self-excited magnetic-valve controllable reactor wiring diagram is changed into an all-controlled-device insulate-gate bipolar transistor IGBT; two thyristors and the IGBT are respectively controlled by three independent control lines; a four pillar structure is adopted in iron cores of the reactor.
Description
technical field [0001] The invention relates to an excitation method and device for a self-excitation valve-type controllable reactor. Specifically, three semiconductor devices are used to control the self-excitation bias current of the magnetron reactor, so as to realize the bidirectional control of DC magnetization and degaussing, and achieve the reactance The invention relates to automatic adjustment of reactor reactance value, which belongs to the technical field of reactor equipment in electrical engineering. Background technique [0002] Reactor is an important electrical device, which is widely used in power system, and plays a role in limiting power frequency overvoltage, eliminating generator self-excitation, limiting operating overvoltage, reactive power compensation, suppressing potential supply current, limiting short circuit current and peace The reactor can be divided into fixed reactor and controllable reactor according to its characteristics, and the excitati...
Claims
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IPC IPC(8): H02P13/12
Inventor 康文斌彭庆华张波梅刚冯宇
Owner STATE GRID ELECTRIC POWER RES INST