A controllable combined device and implementation method of resistance change curve of voltage-controlled material
A combined device and resistance change technology, applied in circuit devices, emergency protection circuit devices, emergency protection circuit devices for limiting overcurrent/overvoltage, etc., can solve problems such as high overvoltage in the branch to be transferred, and achieve cost reduction Effects of low cost, cost reduction, and overvoltage reduction
Active Publication Date: 2021-10-15
DALIAN UNIV OF TECH
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Problems solved by technology
When the single device unit mentioned in this patent is used together with the mechanical breaking port for fault current limiting, the resistance curve changes too quickly after the single device unit operates, resulting in extremely high overvoltage in the branch to be transferred. Therefore, a method with controllable resistance curve is needed to realize current transfer
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[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described implementation Examples are some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0030] figure 1 It is a schematic diagram of a controllable combination device for the resistance change curve of the voltage-controlled material adopted in the present invention, such as figure 1As shown, the device of this embodiment includes: the combination device 1 is composed of three single device units 2 , 3 , 4 with the same structur...
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The invention relates to a controllable combination device and a realization method of a resistance change curve of a voltage-controlled material, which belong to the technical field of high-voltage electric equipment. It includes three single device units with the same structure and a timing control unit. The voltage control material of the first single device unit is connected in series with the voltage control material of the second single device unit to form a first branch, and the voltage control material of the third single device unit is connected in series with a fixed value resistor to form a second branch. The two branches are connected in parallel. The timing control unit separately controls the opening action of the repulsion mechanism of the three individual device units. After the voltage-controlled material is connected to the current limiting circuit, the resistance value of the voltage-controlled material is changed through rapid pressure control. The invention obtains the total resistance change curve that needs to be connected by controlling the opening time of the repulsion mechanism, the connection mode of each single device, and the action sequence of the repulsion mechanism of each single device, and realizes the controllable resistance change curve of the voltage-controlled material. The invention can be applied to occasions where current transfer is required in a power system, and the controllable current transfer can be realized by controlling the change of resistance, thus having better practicability.
Description
technical field [0001] The invention belongs to the technical field of high-voltage power equipment, and specifically relates to a combination device and a realization method of a controllable resistance curve of a voltage-controlled material connected to a circuit, and in particular to an application in the related technical field of using a voltage-controlled material resistance change to drive current transfer. Background technique [0002] At present, with the increase of power transmission in my country's power grid system, the fault current that needs to be interrupted is getting larger and larger. In recent years, there have been more and more researches on fault current limiting. In the power system, the fault current is limited by transferring the fault current to the parallel current-limiting line, but the transfer of the fault current from the mechanical break to the parallel branch is generally completed at the natural zero-crossing point of the system current, r...
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IPC IPC(8): H01C10/10H01C10/16H01C10/50H02H9/02
CPCH01C10/10H01C10/16H01C10/50H02H9/02
Inventor 孙超董恩源王永兴朱玉
Owner DALIAN UNIV OF TECH