EP2777119A2 - Procédé pour fournir une puissance de régulation au moyen d'un générateur d'énergie et d'un consommateur d'énergie - Google Patents

Procédé pour fournir une puissance de régulation au moyen d'un générateur d'énergie et d'un consommateur d'énergie

Info

Publication number
EP2777119A2
EP2777119A2 EP12781067.9A EP12781067A EP2777119A2 EP 2777119 A2 EP2777119 A2 EP 2777119A2 EP 12781067 A EP12781067 A EP 12781067A EP 2777119 A2 EP2777119 A2 EP 2777119A2
Authority
EP
European Patent Office
Prior art keywords
power
energy
consumer
control power
generator
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Withdrawn
Application number
EP12781067.9A
Other languages
German (de)
English (en)
Inventor
Georg Markowz
Wolfgang SCHWEISSTHAL
Carsten Kolligs
Anna FLEMMING
Dennis GAMRAD
Sébastien COCHET
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.)
Steag Power Saar GmbH
Evonik Operations GmbH
Original Assignee
Evonik Degussa GmbH
Evonik Industries AG
Steag Power Saar GmbH
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.)
Filing date
Publication date
Application filed by Evonik Degussa GmbH, Evonik Industries AG, Steag Power Saar GmbH filed Critical Evonik Degussa GmbH
Publication of EP2777119A2 publication Critical patent/EP2777119A2/fr
Withdrawn legal-status Critical Current

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
    • H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
    • 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

Definitions

  • the present invention relates to a method for providing control power for a power grid in which control power is provided, and to an apparatus for carrying out such a method.
  • Electricity grids are used to distribute electricity in large areas to many users and to provide energy to households and industry. Energy producers mostly in the form of power plants provide the required energy. As a rule, power generation is planned and provided based on the forecasted consumption.
  • Both the generation and the consumption of energy can lead to unplanned fluctuations. These can arise on the energy producer side, for example, in that a power plant or part of the power grid fails or, for example, in the case of renewable energies such as wind, that the energy production is higher than predicted. Consumers may also experience unexpectedly high or low consumption. For example, the failure of a portion of the grid, which cuts off some consumers from the power supply, can lead to a sudden reduction in power consumption.
  • the desired AC frequency is, for example, in Europe 50,000 Hz. This frequency is often referred to as the desired frequency.
  • a reduction in consumption compared to the plan results in an increase in the frequency of planned power generation by the energy producers, as well as an increase in electricity production compared to the planned consumption plan.
  • a reduction in performance compared to the energy producers' plan leads to a reduction in the Mains frequency at scheduled consumption, the same applies to an increase in consumption compared to the plan when scheduled production.
  • the required balancing power sources generally need to be operated at part load to accommodate or release additional energy as needed.
  • a power plant it would need to be run at partial load to provide additional positive control power when needed.
  • a consumer would have to be driven at partial load in order to be able to increase the load when additional negative control power is required.
  • These partial load modes are usually disadvantageous.
  • part-load operation leads to lower efficiency of power generation and higher specific emissions.
  • With reduced use of capacity increased specific fixed costs. Consumers operating at partial load reduce their productivity and efficiency.
  • An electrolysis plant used for chemical production has a lower productivity according to the load reduction, and only a smaller proportion of the consumed energy is converted into the product, that is, more energy is needed for the same amount of product.
  • the disadvantage is that for the provision of the regulatory capacity, these sources are usually driven in partial load and only if they just provide maximum control power, can be operated at full load and thus the losses are correspondingly high.
  • US 2006/122738 A1 discloses an energy management system comprising a power generator and an energy store, the energy store being chargeable by the power generator.
  • Increasingly favored renewable energies such as wind power or photovoltaic power plants, are enabled to deliver its energy more evenly into the power grid.
  • the disadvantage of this is that in this way a single power plant can be stabilized, but all other disturbances and fluctuations in the power grid can not be intercepted.
  • a method for the provision of control power in which a combustible gas is generated and stored with renewable energies.
  • the combustible gas can be reconverted exactly in periods of high residual load of the power grid.
  • the power of a gas power plant is increased when a positive control power is requested.
  • the disadvantage of this is that the gas power plant is operated only at a full control request at high power and thus high efficiency, so only in rare cases.
  • the disadvantage of this is that there is currently no way to power producers or energy consumers to provide control power as efficiently as possible to operate in the operation to provide power without control and thus the best possible efficiency, and also for a long time to control power To provide stabilization of the power grid. Overdimensioning is in any case uneconomical.
  • control power by means of energy generators or energy consumers, which can be operated at the most optimal conditions, especially at the highest possible efficiency. So should the control power suppliers have the most efficient energy yield.
  • the energy producers or energy consumers should be able to selectively provide a sufficient amount of positive or negative control power regardless of the magnitude and direction of the deviation of the grid frequency.
  • the energy producer and the energy consumer can be operated as a control power supplier.
  • the process should be as simple and inexpensive as possible.
  • the process should be able to be carried out with as few process steps as possible, whereby they should be simple and reproducible.
  • the subject of the present invention is therefore a method for providing control power for a power grid in which control power is provided, which is characterized in that a power generator and an energy consumer are operated together, whereby the power which the power consumer takes from the power grid is throttled. to provide positive control power and throttling the power that the power generator supplies to the power grid to provide negative control power.
  • a power plant is used as the energy generator, preferably a coal-fired power station, gas-fired power plant or a hydroelectric power station, and / or as an energy consumer an industrial production plant, in particular an electrolysis plant or an industrial production plant for the provision of a metal, preferably of aluminum or steel.
  • the energy producers and the energy consumers are to be devices which are counted on the basis of the amount of the control power provided to the large-scale installations in the industrial sense.
  • a steam power plant a coal power plant, a nuclear power plant, an oil power plant, a solar thermal power plant, a gas and steam combined cycle power plant (Gu D power plant), a biomass cogeneration plant, a gas turbine power plant, a power generator, a hydroelectric power plant, a geothermal power plant and / or a combined heat and power can be used.
  • an energy storage in particular an accumulator, preferably a Li-ion accumulator, or a pool of energy storage is operated together with the energy generator and the energy consumer and the energy storage, in particular the Accumulator is operated such that it is prioritized in the provision of positive and / or negative control power to the power consumer and the power generator, preferably the energy storage, in particular the accumulator has a capacity of at least 4 kWh, preferably of at least 10 kWh, particularly preferably at least 50 kWh, very particularly preferably at least 250 kWh.
  • the capacity of electrochemical energy storage can be at least 40 Ah, preferably about 100 Ah.
  • the heat storage must be operated together with a device for producing electricity from the stored thermal energy.
  • the energy store in particular the accumulator, is used to prevent overshoots above the rated power and / or to accelerate the time change of the power in the event of a change in the control power to be provided.
  • a direct-current consumer such as, for example, an electrolysis
  • an accumulator can be advantageously integrated into the intermediate DC voltage circuit of the consumer, so that the cost of the power electronics can be eliminated or reduced.
  • the tolerance with regard to the amount of the control power provided and the tolerance in determining the frequency deviation, etc. is to be understood by the network operator to be certain deviations between an ideal nominal power due to technical conditions, such as the measurement accuracy in determining the control power supplied or the grid frequency and the actual control power actually delivered.
  • the tolerance may be granted by the network operator, but could also comply with a legal requirement.
  • the tolerances used in the various methods in particular the choice of bandwidth in the dead band, vary depending on the time of day, the day of the week or the season. For example, within a period of 5 minutes to 5 minutes after the hour change, tolerances may be more narrowly defined. This is due to the fact that often very rapid frequency changes take place here. It may be in the interest of transmission system operators that there are lower tolerances and thus the control energy supply is more secure in the sense of sharper.
  • control power it may be provided within the scope of the specifications for the provision of control power that, in particular, more energy is absorbed from the network than is fed in by the energy store. This can be done by virtue of the fact that according to the regulations, including the procedure set out above, preference is given to a very large amount of negative control power whereas, according to the regulations including the procedure set out above, only the at least guaranteed power is preferably provided at positive control power.
  • an average of at least 0.1% more energy is withdrawn from the network than is supplied, in particular at least 0.2%, preferably at least 0.5%, more preferably at least 1.0%, especially preferably 5%, these values being based on a Average measured over a period of at least 15 minutes, preferably at least 4 hours, more preferably at least 24 hours and especially preferably at least 7 days, and refer to the energy fed.
  • the control power provision set out above can be used to extract a maximum of energy from the network, whereby the maximum possible negative control power is provided, whereas only a minimum of positive control power is provided.
  • the energy thus extracted from the network can be sold via the energy trade described above, preferably at times when the highest possible price is to be achieved.
  • forecasts of the price development based on historical data can be used.
  • the state of charge of the energy store at the time of a planned sale of energy may preferably be at least 70%, particularly preferably at least 80% and particularly preferably at least 90% of the storage capacity, the state of charge after sale preferably not exceeding 80%, in particular not more than 70% and especially preferably at most 60% of the storage capacity amounts.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Supply And Distribution Of Alternating Current (AREA)
  • Control Of Eletrric Generators (AREA)

Abstract

L'invention concerne un procédé pour fournir une puissance de régulation pour un réseau électrique selon lequel une puissance de régulation est mise à disposition. Un générateur d'énergie et un consommateur d'énergie fonctionnent ensemble, la puissance absorbée par le consommateur d'énergie du réseau électrique étant restreinte pour mettre à disposition une puissance de régulation positive et la puissance injectée par le générateur d'énergie dans le réseau électrique étant restreinte pour mettre à disposition une puissance de régulation négative. L'invention concerne également un dispositif pour mettre en oeuvre un tel procédé.
EP12781067.9A 2011-11-10 2012-10-26 Procédé pour fournir une puissance de régulation au moyen d'un générateur d'énergie et d'un consommateur d'énergie Withdrawn EP2777119A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201110055227 DE102011055227A1 (de) 2011-11-10 2011-11-10 Verfahren zur Bereitstellung von Regelleistung
PCT/EP2012/071235 WO2013068247A2 (fr) 2011-11-10 2012-10-26 Procédé pour fournir une puissance de régulation au moyen d'un générateur d'énergie et d'un consommateur d'énergie

Publications (1)

Publication Number Publication Date
EP2777119A2 true EP2777119A2 (fr) 2014-09-17

Family

ID=47137688

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12781067.9A Withdrawn EP2777119A2 (fr) 2011-11-10 2012-10-26 Procédé pour fournir une puissance de régulation au moyen d'un générateur d'énergie et d'un consommateur d'énergie

Country Status (4)

Country Link
US (1) US20140306527A1 (fr)
EP (1) EP2777119A2 (fr)
DE (1) DE102011055227A1 (fr)
WO (1) WO2013068247A2 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012113051A1 (de) 2012-12-21 2014-06-26 Evonik Industries Ag Verfahren zur Erbringung von Regelleistung zur Stabilisierung eines Wechselstromnetzes, umfassend einen Energiespeicher
DE102014009953A1 (de) * 2014-07-07 2016-01-07 LichtBlick SE System und Verfahren zum Bestimmen der Eignung mehrerer elektrischer Produzenten und Verbraucher, die in einem Netzwerk als virtuelles Kraftwerk betrieben werden, für die Erbringung von Regelleistung
DE102017106465A1 (de) * 2017-03-27 2018-09-27 LichtBlick SE Hybride Nutzung von Energiespeichern
DE102018133641A1 (de) 2018-12-27 2020-07-02 Sma Solar Technology Ag Elektrolysevorrichtung mit einem umrichter und verfahren zur bereitstellung von momentanreserveleistung für ein wechselspannungsnetz
CN112072675A (zh) * 2020-07-23 2020-12-11 国网江西省电力有限公司电力科学研究院 一种水电机组一次和二次调频协同控制方法

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DE4215550A1 (de) * 1992-05-12 1993-11-18 Siemens Ag Verfahren und Einrichtung zur Bereitstellung von elektrischer Energie aus einem Gleichstromspeicher
WO1995020836A1 (fr) * 1994-01-26 1995-08-03 Onan Corporation Systeme integre generateur de puissance, et procede
JP4945077B2 (ja) 2004-12-03 2012-06-06 シャープ株式会社 蓄電設備管理システム
PL1834393T3 (pl) * 2005-01-07 2017-12-29 Steag Energy Services Gmbh Sposób i urządzenie do podtrzymywania częstotliwości napięcia przemiennego w sieci elektroenergetycznej
US7536240B2 (en) * 2005-07-22 2009-05-19 Ut-Battelle, Llc Real power regulation for the utility power grid via responsive loads
JP5100132B2 (ja) 2007-01-18 2012-12-19 株式会社東芝 周波数調整システムおよび周波数調整方法
DE102008002839A1 (de) 2007-05-08 2008-12-18 Karl-Ludwig Blocher Verfahren und Einrichtungen zur Nutzung von in mechanischen-elektrischen Systemen und anderen elektrischen Systemen gespeicherter Energie als Regelreserve in elektrischen Versorgungsnetzen
DE102008046747A1 (de) 2008-09-11 2010-03-18 Hoppecke Advanced Battery Technology Gmbh Verfahren zum Betrieb eines Produktionssystems und/oder einer lokalen Anlage im Inselbetrieb
US7839027B2 (en) 2008-10-09 2010-11-23 The Aes Corporation Frequency responsive charge sustaining control of electricity storage systems for ancillary services on an electrical power grid
DE102009018126B4 (de) 2009-04-09 2022-02-17 Zentrum für Sonnenenergie- und Wasserstoff-Forschung Baden-Württemberg Energieversorgungssystem und Betriebsverfahren
US8478452B2 (en) * 2010-04-06 2013-07-02 Battelle Memorial Institute Grid regulation services for energy storage devices based on grid frequency

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
None *
See also references of WO2013068247A2 *

Also Published As

Publication number Publication date
US20140306527A1 (en) 2014-10-16
WO2013068247A2 (fr) 2013-05-16
DE102011055227A1 (de) 2013-05-16
WO2013068247A3 (fr) 2013-11-21

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Inventor name: FLEMMING, ANNA

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