GB8510696D0 - Electricity supplies - Google Patents

Electricity supplies

Info

Publication number: GB8510696D0
Authority: GB; United Kingdom
Prior art keywords: electricity supplies; supplies; electricity
Prior art date: 1984-05-19
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

GB858510696A

Other versions

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.)

Rolls Royce Power Engineering PLC

Original Assignee

Northern Engineering Industries PLC

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.)

1984-05-19

Filing date

1985-04-26

Publication date

1985-06-05

1985-04-26 Application filed by Northern Engineering Industries PLC filed Critical Northern Engineering Industries PLC

1985-06-05 Publication of GB8510696D0 publication Critical patent/GB8510696D0/en

1985-12-11 Publication of GB2159963A publication Critical patent/GB2159963A/en

1987-08-12 Application granted granted Critical

1987-08-12 Publication of GB2159963B publication Critical patent/GB2159963B/en

Status Expired legal-status Critical Current

Classifications

- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
- G01R23/02—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage
- G01R23/15—Indicating that frequency of pulses is either above or below a predetermined value or within or outside a predetermined range of values, by making use of non-linear or digital elements (indicating that pulse width is above or below a certain limit)
- 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
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for AC mains or AC distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers

Landscapes

Physics & Mathematics (AREA)
Engineering & Computer Science (AREA)
Power Engineering (AREA)
Nonlinear Science (AREA)
General Physics & Mathematics (AREA)
Measuring Frequencies, Analyzing Spectra (AREA)
Control Of Eletrric Generators (AREA)

GB08510696A 1984-05-19 1985-04-26 Measuring rate of change of frequency Expired GB2159963B (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
GB848412856A GB8412856D0 (en)	1984-05-19	1984-05-19	Frequency detection

Publications (3)

Publication Number	Publication Date
GB8510696D0 true GB8510696D0 (en)	1985-06-05
GB2159963A GB2159963A (en)	1985-12-11
GB2159963B GB2159963B (en)	1987-08-12

Family

ID=10561220

Family Applications (3)

Application Number	Title	Priority Date	Filing Date
GB848412856A Pending GB8412856D0 (en)	1984-05-19	1984-05-19	Frequency detection
GB08510695A Expired GB2159010B (en)	1984-05-19	1985-04-26	Protecting alternators in electricity supply systems
GB08510696A Expired GB2159963B (en)	1984-05-19	1985-04-26	Measuring rate of change of frequency

Family Applications Before (2)

Application Number	Title	Priority Date	Filing Date
GB848412856A Pending GB8412856D0 (en)	1984-05-19	1984-05-19	Frequency detection
GB08510695A Expired GB2159010B (en)	1984-05-19	1985-04-26	Protecting alternators in electricity supply systems

Country Status (1)

Country	Link
GB (3)	GB8412856D0 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE58904574D1 (en) *	1988-03-15	1993-07-08	Siemens Ag	METHOD FOR STABILIZING AN VIBRATING ELECTRICAL SUPPLY NETWORK.
JP2730595B2 (en) *	1989-08-21	1998-03-25	株式会社四国総合研究所	Grid connection equipment for small power generators
JPH03256533A (en) *	1990-03-02	1991-11-15	Shikoku Sogo Kenkyusho:Kk	System linkage system
GB2370702B (en) *	2000-09-19	2003-07-09	Toshiba Kk	Line linkage protective device for electricity generation equipment
GB0102212D0 (en) *	2001-01-29	2001-03-14	Lattice Intellectual Property	Controller
ES2428240B1 (en)	2012-05-03	2015-03-10	Gamesa Innovation & Tech Sl	Method and Module to measure the frequency change rate of the waveforms related to the wind turbine converter units

1984
- 1984-05-19 GB GB848412856A patent/GB8412856D0/en active Pending
1985
- 1985-04-26 GB GB08510695A patent/GB2159010B/en not_active Expired
- 1985-04-26 GB GB08510696A patent/GB2159963B/en not_active Expired

Also Published As

Publication number	Publication date
GB2159963B (en)	1987-08-12
GB2159010B (en)	1987-04-23
GB8510695D0 (en)	1985-06-05
GB2159963A (en)	1985-12-11
GB8412856D0 (en)	1984-06-27
GB2159010A (en)	1985-11-20

Publication	Publication Date	Title
GB8527102D0 (en)	1985-12-11	Generator
GB8416153D0 (en)	1984-08-01	Power supply
GB8514307D0 (en)	1985-07-10	Electrical power supplies
ZW2685A1 (en)	1986-09-24	Hydrogen
GB8512721D0 (en)	1985-06-26	Power supply system
GB8529962D0 (en)	1986-01-15	Zero reference generation
GB8527252D0 (en)	1985-12-11	Generator
DE3562307D1 (en)	1988-05-26	Zinc-alkaline battery
GB8513909D0 (en)	1985-07-03	Battery
GB8422444D0 (en)	1984-10-10	Pure-air generator
GB8527616D0 (en)	1985-12-11	Power supply
GB8518433D0 (en)	1985-08-29	Battery
DE3560471D1 (en)	1987-09-17	Electrical jack-plug
DK165885A (en)	1985-10-14	Windmill
GB8510696D0 (en)	1985-06-05	Electricity supplies
GB8509584D0 (en)	1985-05-22	D c generator
GB8517005D0 (en)	1985-08-07	Generator
GB8514376D0 (en)	1985-07-10	Generator set
GB8521153D0 (en)	1985-10-02	Pure-air generator
PT80345A (en)	1985-05-01	Solar colector
DE3566015D1 (en)	1988-12-08	Windmill-driven generator
GB8404479D0 (en)	1984-03-28	Electrical connection arrangement
GB8523629D0 (en)	1985-10-30	Generator
ZA857138B (en)	1986-04-30	Sanitant arrangement
KR860003223Y1 (en)	1986-11-14	Eundan case

Legal Events

Date	Code	Title	Description
2005-05-18	PE20	Patent expired after termination of 20 years	Effective date: 20050425