AU3213778A - Creation of Inventions and Patents with Artificial Intelligence

AU3213778A – Detecting subsynchronous current in powersystems
– Google Patents

AU3213778A – Detecting subsynchronous current in powersystems
– Google Patents
Detecting subsynchronous current in powersystems

Info

Publication number
AU3213778A

AU3213778A
AU32137/78A
AU3213778A
AU3213778A
AU 3213778 A
AU3213778 A
AU 3213778A
AU 32137/78 A
AU32137/78 A
AU 32137/78A
AU 3213778 A
AU3213778 A
AU 3213778A
AU 3213778 A
AU3213778 A
AU 3213778A
Authority
AU
Australia
Prior art keywords
powersystems
subsynchronous current
detecting
detecting subsynchronous
current
Prior art date
1977-01-06
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)

Granted

Application number
AU32137/78A
Other versions

AU515422B2
(en

Inventor
SC Sun
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

ASEA BROWN BOVERI Inc

Original Assignee
ASEA BROWN BOVERI Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
1977-01-06
Filing date
1978-01-03
Publication date
1979-07-12

1978-01-03
Application filed by ASEA BROWN BOVERI Inc
filed
Critical
ASEA BROWN BOVERI Inc

1979-07-12
Publication of AU3213778A
publication
Critical
patent/AU3213778A/en

1981-04-02
Application granted
granted
Critical

1981-04-02
Publication of AU515422B2
publication
Critical
patent/AU515422B2/en

Status
Expired
legal-status
Critical
Current

Links

Espacenet

Global Dossier

Discuss

Classifications

H—ELECTRICITY

H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS

H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection

H02H3/46—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to frequency deviations

G—PHYSICS

G01—MEASURING; TESTING

G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES

G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 – G01R27/00

G01R29/18—Indicating phase sequence; Indicating synchronism

H—ELECTRICITY

H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS

H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions

H02H7/06—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric generators; for synchronous capacitors

AU32137/78A
1977-01-06
1978-01-03
Detecting subsynchronous current in powersystems

Expired

AU515422B2
(en)

Applications Claiming Priority (2)

Application Number
Priority Date
Filing Date
Title

US05/757,177

US4125884A
(en)

1977-01-06
1977-01-06
Apparatus for detecting subsynchronous current in power systems

USUS757177

1977-01-06

Publications (2)

Publication Number
Publication Date

AU3213778A
true

AU3213778A
(en)

1979-07-12

AU515422B2

AU515422B2
(en)

1981-04-02

Family
ID=25046714
Family Applications (1)

Application Number
Title
Priority Date
Filing Date

AU32137/78A
Expired

AU515422B2
(en)

1977-01-06
1978-01-03
Detecting subsynchronous current in powersystems

Country Status (14)

Country
Link

US
(1)

US4125884A
(en)

JP
(1)

JPS5385352A
(en)

AR
(1)

AR213989A1
(en)

AU
(1)

AU515422B2
(en)

BR
(1)

BR7800018A
(en)

DE
(1)

DE2800067A1
(en)

ES
(1)

ES465823A1
(en)

FR
(1)

FR2377108A1
(en)

GB
(1)

GB1599131A
(en)

IN
(1)

IN149274B
(en)

IT
(1)

IT1104439B
(en)

MX
(1)

MX144248A
(en)

SE
(1)

SE438579B
(en)

YU
(1)

YU40502B
(en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

US4208687A
(en)

1978-11-08
1980-06-17
Westinghouse Electric Corp.
Protective relay apparatus

US4218718A
(en)

1978-11-08
1980-08-19
Westinghouse Electric Corp.
Protective relay apparatus

US4331882A
(en)

1980-03-17
1982-05-25
Electric Power Research Institute, Inc.
Method and means for detecting spurious electrical signals in an electrical power system

US4454428A
(en)

1981-07-22
1984-06-12
Westinghouse Electric Corp.
Noise reduction means for a dynamic stabilizer for synchronous machines having torsional oscillations and method

AU557496B2
(en)

1981-09-10
1986-12-24
Westinghouse Electric Corporation
Static var generator

US4451777A
(en)

1981-09-10
1984-05-29
Westinghouse Electric Corp.
Static VAR generation for transmission line compensation

US4470091A
(en)

1982-10-20
1984-09-04
Westinghouse Electric Corp.
Productive relay apparatus for protection from sub-synchronous current oscillations in a power system

US4607217A
(en)

1983-09-28
1986-08-19
Southern California Edison Company, Inc.
Subsynchronous resonance detection

US4855664A
(en)

1988-06-10
1989-08-08
General Electric Company
Method and apparatus for damping oscillations of an ac generator

US6774614B2
(en)

2002-02-27
2004-08-10
General Electric Company
Method and apparatus for detecting current

EP2357483B1
(en)

2010-02-17
2013-06-26
ABB Research Ltd.
A method of subsynchronous resonance detection

CN102508027B
(en)

2011-09-20
2014-05-28
南京南瑞继保电气有限公司
Method for screening, separating and monitoring subsynchronous modal signals

Family Cites Families (5)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

US3654516A
(en)

1971-04-07
1972-04-04
Westinghouse Electric Corp
Change of current or voltage acutated protecting relay

US3886449A
(en)

1974-03-06
1975-05-27
Gen Electric
Power measurement circuit

US3944846A
(en)

1974-03-19
1976-03-16
Southern California Edison Company
Subsynchronous relay

US3999115A
(en)

1974-05-02
1976-12-21
Westinghouse Electric Corporation
Dynamic stabilizer for synchronous machines having torsional oscillations and method

US4001695A
(en)

1975-03-24
1977-01-04
Systron Donner Corporation
Automatic deviation analysis meter

1977

1977-01-06
US
US05/757,177
patent/US4125884A/en
not_active
Expired – Lifetime

1977-12-20
IN
IN1758/CAL/77A
patent/IN149274B/en
unknown

1977-12-27
FR
FR7739349A
patent/FR2377108A1/en
active
Granted

1977-12-30
SE
SE7714957A
patent/SE438579B/en
not_active
IP Right Cessation

1978

1978-01-02
DE
DE19782800067
patent/DE2800067A1/en
not_active
Withdrawn

1978-01-03
AU
AU32137/78A
patent/AU515422B2/en
not_active
Expired

1978-01-03
BR
BR7800018A
patent/BR7800018A/en
unknown

1978-01-04
IT
IT4150378A
patent/IT1104439B/en
active

1978-01-05
AR
AR27064278A
patent/AR213989A1/en
active

1978-01-05
GB
GB323/78A
patent/GB1599131A/en
not_active
Expired

1978-01-05
ES
ES465823A
patent/ES465823A1/en
not_active
Expired

1978-01-05
YU
YU1278A
patent/YU40502B/en
unknown

1978-01-06
JP
JP30878A
patent/JPS5385352A/en
active
Granted

1978-01-06
MX
MX171960A
patent/MX144248A/en
unknown

Also Published As

Publication number
Publication date

IN149274B
(en)

1981-10-17

GB1599131A
(en)

1981-09-30

YU40502B
(en)

1986-02-28

IT7841503D0
(en)

1978-01-04

SE438579B
(en)

1985-04-22

MX144248A
(en)

1981-09-17

SE7714957L
(en)

1978-07-07

JPS5627057B2
(en)

1981-06-23

JPS5385352A
(en)

1978-07-27

FR2377108B1
(en)

1981-11-27

BR7800018A
(en)

1978-12-05

IT1104439B
(en)

1985-10-21

ES465823A1
(en)

1979-01-01

US4125884A
(en)

1978-11-14

YU1278A
(en)

1982-08-31

FR2377108A1
(en)

1978-08-04

AU515422B2
(en)

1981-04-02

DE2800067A1
(en)

1978-07-20

AR213989A1
(en)

1979-04-11

Contact information