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Half wave arc extinguishing type superconductive fault current limit possessing integral high speed switch module

A high-speed switching and arc-extinguishing technology is applied to devices that can be switched between superconducting and normal conducting states, the usage of superconducting elements, and protection against overcurrent, which can solve the problem of overcurrent relays not working properly and Controlling cutouts etc.

Active Publication Date: 2008-04-30
LSIS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But if the FCL limits the overcurrent before the overcurrent relay detects the overcurrent, the overcurrent relay will not work properly and control the breaker

Method used

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  • Half wave arc extinguishing type superconductive fault current limit possessing integral high speed switch module
  • Half wave arc extinguishing type superconductive fault current limit possessing integral high speed switch module
  • Half wave arc extinguishing type superconductive fault current limit possessing integral high speed switch module

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Embodiment Construction

[0038] image 3 Denotes an exemplary embodiment of a half-wave non-fault current limiting superconducting fault current limiter with an integral high speed switching module, Figure 4 express image 3 The connection state of the superconducting element in , Figure 5 express image 3 The detailed operation of the overall high-speed switch module in, Image 6 express image 3 A block diagram of an exemplary embodiment in .

[0039] see image 3 , the superconducting element 310 is connected in series with the power line, and the power line has a preset resistance to optimize the transmission characteristics of the electric energy provided by the power feeder 300 .

[0040] An integral high speed switch module 320, a current limiting load 330 and a cutout 340 are connected to the rear end of the superconducting element (shown in dashed lines for completeness).

[0041] The overall high-speed switch module 320 includes: an excitation coil 322 connected in parallel with the...

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Abstract

The present invention discloses a half-wave expulsion type superconducting fault-current limiter having an integral high speed switch module. The fault-current limiter has minimum superconducting elements and a circuit of which is formed in a hybrid type with an integral high speed switch module. The fault-current limiter supplies an electric power supplied from a power feeder to a system without loss thereof according to unique characteristics of the superconducting element when a normal current flows, and restricts an over current through a high speed switching contact point integrally inter-working with a driving coil and an arc changeover switch past a half period in a case that the over-current is generated by accidents such as thunder-stroke, earth fault and short circuit, such that electric power appliances such as circuit breakers in an electric power system can be normally operated.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of Korean Patent Application No. 10-2006-0104194 filed with the Korean Intellectual Property Office on October 25, 2006, the contents of which are incorporated herein by reference. technical field [0003] The invention relates to a half-wave arc-extinguishing (non-fault current limiting) type superconducting fault current limiter with an integral high-speed switch module. Background technique [0004] Current limiters and circuit breakers in power systems are used to prevent overcurrents exceeding a certain threshold from flowing into the system due to accidents such as lightning strikes, ground faults, and short circuits. [0005] Among all the current limiters, due to the uniqueness of the superconducting element, the FCL (fault current limiter) using the superconducting element provides the electric energy supplied by the power feeder to a system without loss, and limits such as ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H9/02H02H3/08
CPCY02E40/69H02H9/023H01L39/16Y02E40/60H10N60/30
Inventor 朴劝培李昉昱
Owner LSIS CO LTD
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