Protection system for an electrical power network

Steven Fletcher (Inventor), Patrick Norman (Inventor), Stuart Galloway (Inventor), J.E. Hill (Inventor)

Research output: Patent

Abstract

The invention is a means of fault detection and location for dc networks. AC systems attempt to measure the inductance of the line; this is not possible in a dc system. Instead, in this invention, the inductance is estimated from the initial rate of discharge of the current from the dc bus capacitor on the converter feeding the dc network. This will reduce the duration that a fault will exist, reducing damage and improving safety, as well as improving discrimination so giving a more reliable system.
LanguageEnglish
Patent numberGB1102031.0
IPCH02H3/00
Priority date7/02/11
Publication statusPublished - 2 Jul 2011

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Patents and inventions
Inductance
Electric fault location
Fault detection
Capacitors

Keywords

  • DC protection
  • fault detection
  • protection system
  • electrical power network

Cite this

Fletcher, S., Norman, P., Galloway, S., & Hill, J. E. (2011). IPC No. H02H3/00 . Protection system for an electrical power network. (Patent No. GB1102031.0).
Fletcher, Steven (Inventor) ; Norman, Patrick (Inventor) ; Galloway, Stuart (Inventor) ; Hill, J.E. (Inventor). / Protection system for an electrical power network. IPC No.: H02H3/00 . Patent No.: GB1102031.0.
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Fletcher, S, Norman, P, Galloway, S & Hill, JE 2011, Protection system for an electrical power network, Patent No. GB1102031.0, IPC No. H02H3/00 .

Protection system for an electrical power network. / Fletcher, Steven (Inventor); Norman, Patrick (Inventor); Galloway, Stuart (Inventor); Hill, J.E. (Inventor).

IPC No.: H02H3/00 . Patent No.: GB1102031.0.

Research output: Patent

TY - PAT

T1 - Protection system for an electrical power network

AU - Fletcher, Steven

AU - Norman, Patrick

AU - Galloway, Stuart

AU - Hill, J.E.

PY - 2011/7/2

Y1 - 2011/7/2

N2 - The invention is a means of fault detection and location for dc networks. AC systems attempt to measure the inductance of the line; this is not possible in a dc system. Instead, in this invention, the inductance is estimated from the initial rate of discharge of the current from the dc bus capacitor on the converter feeding the dc network. This will reduce the duration that a fault will exist, reducing damage and improving safety, as well as improving discrimination so giving a more reliable system.

AB - The invention is a means of fault detection and location for dc networks. AC systems attempt to measure the inductance of the line; this is not possible in a dc system. Instead, in this invention, the inductance is estimated from the initial rate of discharge of the current from the dc bus capacitor on the converter feeding the dc network. This will reduce the duration that a fault will exist, reducing damage and improving safety, as well as improving discrimination so giving a more reliable system.

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KW - fault detection

KW - protection system

KW - electrical power network

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Fletcher S, Norman P, Galloway S, Hill JE, inventors. Protection system for an electrical power network. H02H3/00 . 2011 Jul 2.