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2 242 015

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IPC

(21) (22)

Application

2003124733/28, 2003-08-07

(24)

Start date

2003-08-07

(22)

Actual filing date

2003-08-07

(45)

Published

2004-12-10

(72)

Inventor

Sidorov A.I.Khusainova N.A.

(73)

Holder

Gosudarstvennoe Obrazovatel'Noe Uchrezhdenie Vysshego Professional'Nogo Obrazovanija Juzhno-Ural'Skij Gosudarstvennyj Universitet

METHOD FOR CONTROLLING CONDUCTIVITY OF ISOLATION RELATIVELY TO GROUND OF GRID PORTION WITH ISOLATED NEUTRAL LINE Russian patent published in 2004 - IPC

Abstract RU 2242015 C1

FIELD: electric engineering.

SUBSTANCE: method includes measuring currents at start and end of controlled grid portion and all phase voltages relatively to ground at start and end of controlled grid portion. Also measured are linear voltages at end of controlled grid portion, and displacement angles between current vector for each phase and voltage vector for each phase relatively to ground at start and end of controlled grid portion. Values of active and capacity components of conductivity of isolation of each phase relatively to ground is determined from invented formulae.

EFFECT: higher efficiency.

3 dwg, 1 tbl

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RU 2 242 015 C1

Authors

Sidorov A.I.

Khusainova N.A.

Dates

2004-12-10—Published

2003-08-07—Filed