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Ship electricity fault current restrictor

A fault current limiting and fault current technology, applied in circuit devices, emergency protection circuit devices, emergency protection circuit devices for limiting overcurrent/overvoltage, etc., can solve the problem of ineffective protection of the system, high cost, and marine circuit breakers Specifications cannot be fully applied, etc.

Inactive Publication Date: 2010-06-16
苏俊连
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as mentioned above, the short-circuit fault current of the current marine power system is increasing day by day, and the specifications of the existing marine circuit breaker are not fully applicable, nor can it effectively protect the entire system, or the selected switchgear is too large in size and weight, or the cost is too high

Method used

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  • Ship electricity fault current restrictor
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  • Ship electricity fault current restrictor

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Embodiment Construction

[0021] The content, characteristics and embodiments of the present invention are described below through drawings, so that your examiners can have a better understanding of the present invention.

[0022] see figure 1 As shown, it is a preferred embodiment of the present invention, about a ship electric fault current limiting device, including:

[0023] A ship electrical system 1, the ship electrical system 1 includes a power supply terminal 11, a load 12, the power supply terminal 11 is electrically connected to the load 12;

[0024] A fault current limiter 2, the fault current limiter 2 is a discriminant impedance device 21, the discriminant impedance device 21 is a superconductor, connected in series on the path from the power supply end 11 to the load 12, when When the ship's electrical system 1 is in normal operation, it is in a low-impedance state to avoid the loss of Joule thermal power; but when a fault occurs and a huge fault current is generated, it can quickly chan...

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PUM

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Abstract

The invention relates to a ship electricity fault current restrictor comprising a ship electricity system and a fault current restrictor. The ship electricity system comprises a power supply end and a load which are electrically connected with each other; and the fault current restrictor is a judging-type impedance device which is electrically connected with a patch from the power supply end to the load and can judge the fault current. A low-impedance state is presented if no fault current occurs and a high-impedance state is presented if the fault current is detected so as to restrict the fault current to pass through.

Description

technical field [0001] The invention relates to a ship electric fault current limiting device, in particular to a device for limiting the short circuit fault current of the ship power system. Background technique [0002] Due to the importance of the ocean to my country's industrial and economic development, the shipbuilding industry plays a pivotal role in the development of the ocean. For a ship, its power system is a very important part. The ship power system is somewhat different from the shore power system, and its reliability and stability requirements are more stringent. The stability of the power system of a ship sailing at sea is very important. For example, all navigation instruments, communication equipment, mechanical equipment, various pumps, compressors, blowers, centrifuges and domestic electricity on board need to rely on In the operation of electric power, if a generator or other electrical equipment fails, causing a partial or total power outage, serious ...

Claims

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Application Information

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IPC IPC(8): H02H9/02
Inventor 苏俊连苏信益
Owner 苏俊连
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