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Neutral-point resistance grounding cabinet

A resistance grounding, neutral point technology, applied in the field of electric power, can solve the problems of sound phase potential increase, damage to insulation level, interphase short circuit, etc., to achieve the effect of design optimization, broad market prospects, and stable use

Inactive Publication Date: 2015-04-29
SUZHOU LONG YUAN ELECTRICITY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] When the neutral point of the power grid is not grounded, even if the capacitive current of the system is not large, intermittent arc overvoltages will be generated when the single-phase is grounded, so that the potential of the healthy phase may rise enough to destroy its insulation level. degree, even forming phase-to-phase short circuit

Method used

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  • Neutral-point resistance grounding cabinet

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Embodiment Construction

[0011] The following will clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0012] Embodiments of the invention include:

[0013] A neutral point resistance grounding cabinet includes: a cabinet body 1 , a wiring device 2 , a circuit breaker 3 , a resistor 4 and a detection device 5 .

[0014] The wiring device 2, the circuit breaker 3, the resistor 4 and the detection device 5 are all arranged inside the cabinet body 1 to play the role of isolation and protection. At the neutral point, the neutral point of the power grid is connected to the resistance ground, which discharges the electroma...

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Abstract

The invention discloses a neutral-point resistance grounding cabinet. The cabinet comprises a cabinet body, a junction device, a breaker, a resistor and a detection device, wherein the junction device, the breaker, the resistor and the detection device are all arranged in the cabinet body; the junction device is used for being externally connected with a power generator or a neutral point of a transformer; the resistor is connected with the junction device through the breaker; the resistor is in power connection; the detection device is electrically connected with the resistor. With the adoption of the scheme, the neutral-point resistance grounding cabinet has the advantages of safe protection, optimized design, novel structure, use stability, real-time monitoring and the like and has a wide market prospect in popularization.

Description

technical field [0001] The invention relates to the field of electric power, in particular to a neutral point resistance grounding cabinet. Background technique [0002] When the neutral point of the power grid is not grounded, even if the capacitive current of the system is not large, intermittent arc overvoltages will be generated when the single-phase is grounded, so that the potential of the healthy phase may rise enough to destroy its insulation level. degree, and even form a phase-to-phase short circuit. Contents of the invention [0003] The technical problem mainly solved by the present invention is to provide a neutral point resistance grounding cabinet. By adopting the neutral point connection resistance grounding of the power grid, the electromagnetic energy in the intermittent arc overvoltage is discharged, so that the neutral point potential is reduced. The rising speed of the fault phase recovery voltage is also slowed down, thereby reducing the possibility ...

Claims

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Application Information

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IPC IPC(8): H02H9/08
Inventor 朱剑华戴兵
Owner SUZHOU LONG YUAN ELECTRICITY TECH
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