EP1046208A1 - Electric power supply system for an electrical equipment - Google Patents
Electric power supply system for an electrical equipmentInfo
- Publication number
- EP1046208A1 EP1046208A1 EP99942964A EP99942964A EP1046208A1 EP 1046208 A1 EP1046208 A1 EP 1046208A1 EP 99942964 A EP99942964 A EP 99942964A EP 99942964 A EP99942964 A EP 99942964A EP 1046208 A1 EP1046208 A1 EP 1046208A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- electrical
- energy
- supply
- electrical energy
- network
- Prior art date
- 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.)
- Withdrawn
Links
Classifications
-
- 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
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/30—Arrangements for balancing of the load in a network by storage of energy using dynamo-electric machines coupled to flywheels
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
Definitions
- the present invention relates to an electrical energy supply system for at least one electrical apparatus.
- Such supply should provide, permanently, a highly stable frequency, that is to say, for example, with lower variation than about 1%, values of changes in voltage of less than about 10%, preferably lower by example 8%, for a power that can range, for example up to 30 megawatts.
- the object of the invention is to provide a power system capable of providing high quality power, that is to say capable of meeting the requirements mentioned above. It therefore provides a system for supplying electrical energy to at least one electrical apparatus connected to a power supply connected to a distribution network power line, further comprising at least one generator of electrical energy connected to line and interposed between the array and the line, disturbance compensation means in the power supplied to the apparatus, the compensating means comprising means for active electrical energy storage adapted to exchange the active electrical energy with the electrical equipment at the occurrence of a disturbance.
- the supply system according to the invention may also include one or more of the following characteristics, taken in isolation or in any technically possible combination:
- the means of storage of energy comprise at least one rotary mass associated with reversible means for converting a mechanical energy into an electric energy connected to a supply line of the apparatus;
- the system further comprises frequency converter means associated with the energy storage means;
- It further comprises reversible means for converting an active power delivered by the energy storage means into an active power intended to be exchanged with the apparatus;
- the system further comprises at least one step-up transformer connected between the supply line of the electrical equipment and the energy storage means;
- FIG. 1 is a general schematic view of a supply system according to the invention
- FIG. 1 there is shown a general view of a supply system according to the invention. It is intended for supplying one or more electrical devices, designated by the general reference numeral 10.
- electrical device is meant any type of device or installation consuming electrical energy, such as electronic power devices, motors, ...
- the installation 10 must be supplied by means of a high quality supply, that is to say having a stable frequency, with variations for example less than about 1%, variations in voltage for example less than 10%, preferably less than 8% and without voltage dips which may appear in the presence of a micro-break or a short-circuit on an electrical energy distribution network.
- the voltage to be supplied to the apparatus 10 is several tens of KV, for a power of several tens of megawatts.
- the supply system comprises a supply line 12 connected to a polyphase electrical energy distribution network R, in this case the public distribution network, and to which a set of electric power generators, such as 14, constituted for example by " suitable gas turbines or engines.
- the number of generators 14 used depends on the needs of the apparatus 10, that is to say on the total power to be supplied, on the power of each generator, and on the impact of the maximum admissible load, ie ie the frequency variation generated during the electrical connection of the apparatus 10.
- generators 14 each delivering a power of 3.8 megawatts
- eight identical generators 14 are used and connected in parallel on the supply line 12, so as to obtain an overall power of about 30 megawatts.
- each generator 14 is associated with a voltage step-up transformer, such as 16, capable of raising the voltage supplied on line 12 to the voltage level to be supplied to the apparatus 10, that is to say up to a voltage equal to 20 KV, for example.
- the supply system is provided with means for compensating for disturbances liable to appear in the supply supplied to the apparatus 10, designated by the general reference 18 and succinctly shown in this figure.
- the compensation means 18 comprise electrical energy storage means 20 constituted by a rotating mass associated with means 21 for reversible conversion of the mechanical energy delivered or absorbed by the latter into electrical energy, connected to the supply line 12.
- electrical energy storage means 20 constituted by a rotating mass associated with means 21 for reversible conversion of the mechanical energy delivered or absorbed by the latter into electrical energy, connected to the supply line 12.
- FIG. 2 a first exemplary embodiment of the compensation means 18 is shown.
- the energy storage means 20 of the compensation means 18 are connected between two inductance coils 22 and 24 connected on one side to the network R of electrical energy distribution and on the other to the supply line 12, to allow an exchange of energy with the electrical equipment and the network when a disturbance in the supply occurs, for example a micro-cut generated by the supply network R, or a malfunction of one of the generators 14, in order to maintain constant the supply voltage of the apparatus 10.
- the energy storage means 20 are connected to the coils 22 and 24 via a step-up transformer 26 capable, for example, of providing an active power of 5 MW. They comprise several identical branches 28, 30 and 32 arranged in parallel and connected to the transformer 26 by means of suitable switching devices, such as 33.
- each of the branches 28, 30 and 32 comprises a rotary mass, 34, 36 and 38, constituted by a flywheel of the conventional type, associated with means for reversible conversion of mechanical energy into electrical energy. , respectively 40, 42 and 44, with a view to converting, on the one hand, the mechanical energy supplied by the flywheels 34, 36 and 38 into electrical energy and, on the other hand, energy electrical power to be absorbed on the supply line 12 with corresponding mechanical energy for driving the flywheels in rotation.
- each of the flywheels is a flywheel capable of delivering an active power equal to 1650 KW for 10 s.
- the operating point of these flywheels is adjusted so as to be positioned in the middle of their operating range, so as to absorb or deliver either active power.
- the energy converting means 40, 42 and 44 are also connected to a frequency converter, respectively 46, 48 and 50, of the conventional type, capable of providing, at output, a frequency equal to 50 Hz compatible with the frequency d supply of electrical equipment 10.
- Each of the branches 28, 30 and 32 is further completed by a converter, 52, 54 and 56, constituted for example by an alternator, capable of transforming the active power supplied by the flywheels 34, 36 and 38 into a power. corresponding active, for injection into the supply line 12 and transforming the active power taken from the latter into active power corresponding, to be stored in the flywheels.
- a converter, 52, 54 and 56 constituted for example by an alternator, capable of transforming the active power supplied by the flywheels 34, 36 and 38 into a power. corresponding active, for injection into the supply line 12 and transforming the active power taken from the latter into active power corresponding, to be stored in the flywheels.
- the coils 22 and 24 limit the transmission of electrical energy in the direction of the portion of the network concerned as long as a circuit breaker 58 conventionally equipping the network R is not actuated, this which typically occurs after a period of time of up to 500 ms. Therefore, the effects of such a short circuit are limited.
- the switching elements, such as 33, equipping the energy storage means are controlled by means of a conventional electronic device whose response time is negligible compared to the response time of the circuit breaker 58, which contributes to limit the effects of a malfunction appearing on network R.
- the energy storage means 20 are connected between two rotating machines 62 and 64 with a wound rotor connected one, 62, to the network R of electrical energy distribution and the other, 64, to the supply line 12, to allow an exchange of energy with the electrical equipment and the network when a disturbance in the supply occurs, for example a micro-cut generated by the supply network R, or by a malfunction of one of the generators 14.
- the rotating machines 62 and 64 are connected to the network R and to the supply line 12 via two step-up transformers 66 and 68 capable, for example, of providing an active power of 3 MW .
- the compensation means 18 comprise several identical branches arranged in parallel.
- Each of the branches is adapted to exchange active power with the electrical equipment 10 and the network R to compensate for the disturbances that may appear in the supply of the latter.
- the energy storage means 20 of each of the branches comprises a rotary mass 70 of energy storage constituted by a flywheel of conventional type, associated with reversible means for converting mechanical energy into electrical energy , 72 and 74, with a view to converting, on the one hand, the mechanical energy supplied by the flywheels into electrical energy and, on the other hand, the electrical energy to be absorbed on the line of l 'supply 12 with corresponding mechanical energy for driving the flywheels in rotation.
- the flywheel is a flywheel capable of delivering an active power equal to 3000 KW for 3 s.
- the energy converting means 72 and 74 are also capable of supplying, at the output, a variable frequency compatible with the frequency of rotation of the flywheel 70.
- the switching elements equipping the energy storage means are controlled by means of a conventional electronic device whose response time is negligible compared to the response time of the circuit breaker 76, which contributes to limiting the effects of a dysfunction appearing on the network R.
- the power system described with reference to Figures 1 and 2 is provided with energy storage means mainly constituted by flywheels.
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9811417 | 1998-09-14 | ||
FR9811417A FR2783367B1 (en) | 1998-09-14 | 1998-09-14 | ELECTRIC POWER SUPPLY SYSTEM FOR ELECTRICAL EQUIPMENT |
PCT/FR1999/002180 WO2000016461A1 (en) | 1998-09-14 | 1999-09-14 | Electric power supply system for an electrical equipment |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1046208A1 true EP1046208A1 (en) | 2000-10-25 |
Family
ID=9530386
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99942964A Withdrawn EP1046208A1 (en) | 1998-09-14 | 1999-09-14 | Electric power supply system for an electrical equipment |
Country Status (6)
Country | Link |
---|---|
US (1) | US6188143B1 (en) |
EP (1) | EP1046208A1 (en) |
JP (1) | JP2002526010A (en) |
KR (1) | KR100675109B1 (en) |
FR (1) | FR2783367B1 (en) |
WO (1) | WO2000016461A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1656722B2 (en) * | 2003-08-15 | 2019-08-14 | Beacon Power, LLC | Methods, systems and apparatus for regulating frequency of generated power using flywheel energy storage systems with varying load and/or power generation |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2629961B1 (en) * | 1988-04-11 | 1993-11-12 | Acutronic France Sa | DEVICE FOR DRIVING ROTATION OF A CENTRIFUGAL ARM AND METHOD FOR SUPPLYING POWER TO SUCH A DEVICE |
DE3829457A1 (en) * | 1988-08-31 | 1990-03-01 | Struever Kg Ad | IMMEDIATE READY FOR A DYNAMIC, UNINTERRUPTIBLE POWER SUPPLY |
EP0431486B1 (en) * | 1989-12-07 | 2002-09-25 | Maschinenfabrik Rieter Ag | Power failure in a card room |
JPH0412628A (en) * | 1990-04-27 | 1992-01-17 | Mitsubishi Electric Corp | Power supply system |
DE4030134A1 (en) * | 1990-09-24 | 1992-03-26 | Guimet Marie Helene | Energy storing electrical current generating set - has heat power machine and coupling with energy storage flywheel and electro-energy generator and switching system producing working voltage |
US5169500A (en) | 1991-10-15 | 1992-12-08 | Wilbanks International | Adjustable angle foil for paper making machine with rigid foil body and cam actuation means |
DE19516838A1 (en) * | 1995-05-08 | 1996-11-14 | Hagen Batterie Ag | Method and circuit arrangement for covering energy peak demand in electrical AC or three-phase networks |
US5821630A (en) * | 1995-11-13 | 1998-10-13 | Schutten; Herman P. | Flywheel-speed sensing for control of an emergency-power engine |
US5994794A (en) * | 1997-05-09 | 1999-11-30 | Active Power, Inc. | Methods and apparatus for providing protection to batteries in an uninterruptible power supply |
-
1998
- 1998-09-14 FR FR9811417A patent/FR2783367B1/en not_active Expired - Fee Related
-
1999
- 1999-09-07 US US09/391,651 patent/US6188143B1/en not_active Expired - Fee Related
- 1999-09-14 EP EP99942964A patent/EP1046208A1/en not_active Withdrawn
- 1999-09-14 WO PCT/FR1999/002180 patent/WO2000016461A1/en active IP Right Grant
- 1999-09-14 JP JP2000570885A patent/JP2002526010A/en active Pending
- 1999-09-14 KR KR1020007005143A patent/KR100675109B1/en not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO0016461A1 * |
Also Published As
Publication number | Publication date |
---|---|
FR2783367B1 (en) | 2002-05-10 |
JP2002526010A (en) | 2002-08-13 |
WO2000016461A1 (en) | 2000-03-23 |
KR20010032025A (en) | 2001-04-16 |
KR100675109B1 (en) | 2007-01-29 |
US6188143B1 (en) | 2001-02-13 |
FR2783367A1 (en) | 2000-03-17 |
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Legal Events
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Owner name: L'AIR LIQUIDE, S.A. A DIRECTOIRE ET CONSEIL DE SUR |
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RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: L'AIR LIQUIDE, SOCIETE ANONYME POUR L'ETUDE ET L'E |
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RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: L'AIR LIQUIDE, SOCIETE ANONYME POUR L'ETUDE ET L'E |
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17Q | First examination report despatched |
Effective date: 20090507 |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 20090918 |