Intelligent arc extinction and resonance extinction overvoltage protection integral optimization device
An optimized device and intelligent arc suppression technology, which is applied in the direction of emergency protection circuit devices, emergency protection circuit devices, circuit devices, etc. for limiting overcurrent/overvoltage, can solve the problem that the protection characteristics cannot be matched with each other, and cannot be completely and effectively suppressed System overvoltage and other problems, to achieve the effect of eliminating frequent fusing, suppressing ultra-low frequency oscillating current, and gently rising the leading edge
Inactive Publication Date: 2012-10-03
淄博联诚电力科技有限公司
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Problems solved by technology
[0004] For such a complex system, it is difficult to use one or several overvoltage protection devices in isolation to completely suppress various types of system overvoltages, and these overvoltage protection products produced by different manufacturers cannot match each other because of the protection characteristics. Cannot completely and effectively suppress system overvoltage
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[0019] Embodiments of the present invention are further described below in conjunction with accompanying drawings:
[0020] Such as figure 1 As shown, the cabinet 1 is equipped with an isolating switch 2, a PT harmonic elimination device 3, a large-capacity integrated overvoltage protector 4, a single-phase vacuum contactor 5 and a high-voltage current-limiting fuse 6, which are installed on the front door of the cabinet 1. Intelligent controller 7, isolating switch 2 are respectively connected with PT harmonic elimination device 3, large-capacity integrated overvoltage protector 4 and high-voltage current-limiting fuse 6, and high-voltage current-limiting fuse 6 is connected with single-phase vacuum contactor 5 , the intelligent controller 7 is connected with the PT harmonic elimination device 3 and the single-phase vacuum contactor 5 respectively.
[0021] The isolation switch 2 is set in the middle of the cabinet 1, the PT harmonic elimination device 3 is set in the rear l...
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The invention relates to an intelligent arc extinction and resonance extinction overvoltage protection integral optimization device and belongs to the technical field of electric network protection equipment. The integral optimization device is characterized by comprising a cabinet body, wherein an isolation switch, a PT (platinum) resonance extinction device, a high-capacity integral overvoltage protector, a single-phase vacuum contactor and a high-voltage current limiting fuse are arranged in the cabinet body, an intelligent controller is arranged on a surface door of the cabinet body, the isolation switch is respectively connected with the PT resonance extinction device, the high-capacity integral overvoltage protector and the high-voltage current limiting fuse, the high-voltage current limiting fuse is connected with the single-phase vacuum contactor, and the intelligent controller is respectively connected with the PT resonance extinction device and the single-phase vacuum contactor. The intelligent arc extinction and resonance extinction overvoltage protection integral optimization device has the advantages that the overvoltage ascending front edge can be effectively gentled, the voltage peak is smoothed, the ultra-low frequency oscillation current is inhibited, the frequent fuse phenomenon of the fuse is eliminated, and the arc grounding voltage is effectively limited.
Description
technical field [0001] The invention relates to an intelligent comprehensive optimization device for arc suppression and harmonic elimination overvoltage protection, which belongs to the technical field of power grid protection equipment. Background technique [0002] With the development of the power grid, overhead lines are gradually replaced by solid insulated cable lines. Due to the cumulative effect of solid insulation breakdown, its internal overvoltage, especially the arc grounding overvoltage generated when single-phase intermittent arcing grounding occurs in the power grid and the ferromagnetic resonance overvoltage caused by it, have become the safe operation of this type of power grid. a major threat. Among them, the single-phase arc light grounding overvoltage is the most serious. [0003] In the non-effective grounding system of the neutral point, an electromagnetic voltage transformer (hereinafter referred to as PT) is generally connected. In order to measur...
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IPC IPC(8): H02H9/04H02H9/08H02B1/04
Inventor 李红军韩家永成学英
Owner 淄博联诚电力科技有限公司
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