Protection system for an electrical power network

Jason E Hill; Steven D A Fletcher; Patrick J Norman; Stuart J Galloway

Protection system for an electrical power network

Jason E Hill (Inventor), Steven D A Fletcher (Inventor), Patrick J Norman (Inventor), Stuart J Galloway (Inventor)

Electronic And Electrical Engineering

Research output: Patent

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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.

Original language	English
Patent number	GB1102031.0
IPC	H02H3/00
Priority date	7/02/11
Publication status	Published - 2 Jul 2011

Keywords

DC protection
fault detection
protection system
electrical power network

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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. ",

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AU - Fletcher, Steven D A

AU - Norman, Patrick J

AU - Galloway, Stuart J

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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.

KW - DC protection

KW - fault detection

KW - protection system

KW - electrical power network

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Protection system for an electrical power network

Abstract

Keywords

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