Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F22—STEAM GENERATION
  • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
  • F22B1/00—Methods of steam generation characterised by form of heating method
  • F22B1/006—Methods of steam generation characterised by form of heating method using solar heat
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
  • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
  • F01K3/00—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein
  • F01K3/004—Accumulation in the liquid branch of the circuit
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
  • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
  • F01K3/00—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein
  • F01K3/18—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein having heaters
• • 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
  • Y02E20/00—Combustion technologies with mitigation potential
  • Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]

Definitions

• the invention relates to a method for a tripodrege ⁇ ment and / or frequency or primary and / or a secondary control in a solar thermal steam power plant with a not freely adjustable primary heat source and an additional borrowed heat source and a solar thermal steam power plant.
• a steam power plant is a type of power plant for
• Power generation in which a thermal energy of steam in a steam turbine is converted into kinetic energy and further converted into electrical energy in a generator.
• the steam required for operating the steam turbine is first of all generated in a steam boiler from previously cleaned and prepared (feed) water. By further heating the steam in a superheater, the temperature and specific volume of the steam increase. From the steam boiler, the steam flows via pipelines into the steam turbine, where it delivers part of its previously absorbed energy as kinetic energy to the turbine. To the turbine, a generator is coupled, which converts mechanical Leis ⁇ tion into electrical power.
• the expanded and cooled steam flows into the con ⁇ capacitor, where it is condensed by heat transfer to the environment and accumulates as liquid water.
• condensate pumps and preheaters through the water is cached in a feedwater tank and then through a feed pump and preheater through the again
• Solar thermal power plants are also known, example ⁇ from http: // de. wikipedia. org / wiki / Solar thermal power plant (available on 14.03.2012).
• a solar thermal power plant is a special form of steam power plant, in welehern solar energy is used as a primary source of energy or heat source for steam generation.
• such a solar thermal power plant has two - via a heat exchanger (thermal) coupled - circuits, a primary (solar circuit) and a secondary circuit (water-steam cycle), ie. It works on a two-circuit principle.
• the primary circuit or solar cycle is - to ⁇ usually a plurality of solar collectors, arranged in a solar collector field, flowing through - heat transfer medium, for example (thermal) oil there by solar irradiation he warms ⁇ (primary heat / energy source or primary energy / Heat supply).
• - heat transfer medium for example (thermal) oil there by solar irradiation he warms ⁇ (primary heat / energy source or primary energy / Heat supply).
• the heated heat transfer medium continues to flow through the heat ⁇ exchanger by the recorded thermal energy to the secondary circuit, the water-steam cycle, or to the local process medium, ie to a (food) water transmits.
• the mechanical power is then converted into electrical power, which is fed as electrical power in a power grid.
• the condenser being arranged ⁇ , in which the steam - after expansion in the turbine - the largest part of its heat transfer to the cooling water. During this process, the vapor liquefies by condensation.
• the feed water pump promotes the resulting liquid water as feed water again to the heat exchanger, which also the secondary circuit is closed.
• All of the information obtained in a solar thermal steam power plant are displayed in a control room and there, usually in a central processing unit, evaluated, operating states of individual power plant components are displayed, evaluated, controlled, controlled and / or regulated , Via control units, a power plant operator can intervene in a Be ⁇ operating sequence of the power plant, for example by opening or closing a valve or a valve or by a change in a supplied Brennstoffmen- ge.
• the central component of such a control room is a Leit ⁇ computer, on which a block management, a central control or control and / or regulating unit, - for example, as an automation system / automation software - implemented by means of which a control, a STEU ⁇ tion and / or a regulation of the solar thermal power plant can be carried out.
• a control a STEU ⁇ tion and / or a regulation of the solar thermal power plant can be carried out.
• frequency control in power grids a distinction is made between different types of frequency control, for example a primary control and a secondary control with or without a so-called dead band. Since electrical energy on the way from producer to consumer ⁇ cher can not be stored, electricity generation and consumption must be in equilibrium at every moment in the power grid, meaning it has to be generated as much electrical energy as is consumed.
• the frequency of the elec- innovative energy is the integrating control variable and assumes the power frequency rated value as long as electricity generation ⁇ supply and power consumption are in balance. The speeds of the power plant generators connected to a power grid are synchronized with this grid frequency.
• Fluctuations in electricity consumption are distributed by the primary control system to the power plants involved in primary control throughout the electricity grid.
• These provide a so-called primary control reserve, ie a power reserve, which is automatically supplied by the participating power plants to the power grid in order to compensate for the imbalance between production and consumption within seconds by regulating production.
• the primary control thus serves to stabilize the network frequency with as small a deviation as possible, but at a level deviating from a prescribed nominal power frequency value.
• the subsequent to the primary control Sekundärregelun has the task to restore the balance between the Stromerzeu ⁇ like and consumers in the power grid and thereby the network frequency again to the predetermined Netzfre quenznennwert, z. B. 50 Hz, due.
• the power plants involved in the secondary control provide a secondary control reserve in order to restore the grid frequency to the nominal grid frequency and restore the balance in the grid.
• the request for the primary control reserve and the discharge of the primary control reserve into the power grid are automatic by the control equipment of the power plants involved in the primary control (the power grid as such or the frequency change in the power grid requires the primary control reserve), whereas the secondary control is provided by a Parent network controller in the power grid at the power plants involved in the secondary control requested and then released to this request from the power plants in the power grid.
• a generally large-scale expansion of the solar collector field also leads to temporally strongly delayed changes in the solar collector field. This can not be caused by a change in focusing of the solar collectors targeted adjustment of the generator power, which also the
• an additional heat source for example an additional natural gas firing by means of special natural gas boilers, can be provided in the primary circuit for the primary heat source (in the solar cycle).
• This additional heat source and in particular a such additional natural gas firing allows, as required, the temperature of varnishträ ⁇ transfer medium in the primary circuit to adjust, thereby correspondingly more or less electrical Power can be generated in the secondary circuit. If heat is supplied or reduced as required by the additional heat source, for example natural gas firing, the delivered electrical power plant output can be stabilized in such a solar thermal power plant with non-freely adaptable primary heat source / supply and with an additional heat source / heat supply or to some extent electric power ramps, as well as a frequency or primary and / or a secondary control are driven.
• Performance only by a determined optional power i. a maximum mobile power of the power plant depending on the condition of individual power-limiting units (e.g., feed pumps in operation).
• the additional heat source can also be used in the primary ⁇ circulation to keep the heat transfer medium liquid ( "antifreeze protection").
• a measure of the use of this additional heat source such as the additional natural gas firing, but is based solely and alone For economic reasons, such additional firing or heat input requires additional / increased fuel and / or power plant costs.
• Power regulation is possible because the fluctuations in the - unadaptable - primary heat source, ie the Solar energy, can not be influenced by the power plant and occur more or less randomly.
• This process medium-immanent energy storage and this thermal storage in the water-steam circuit are aller- recently limited so that also is limited by available alternate ⁇ bare control reserve.
• the invention has for its object to provide a method which one, in particular automatic or auto ⁇ matinstrumente, power control and / or frequency or primary and / or secondary control, in a solar thermal power plant with a non-adjustable primary heat source and a additional heat source allows. Also is the He ⁇ -making based on the object to create a suitable for a particular au ⁇ matic or automated, power control and / or frequency or primary and / or secondary control solar thermal power plant.
• the object is by the method for, in particular auto ⁇ matischen or automated, power control and / or frequency or primary and / or secondary control in a solar thermal steam power plant with a non-adjustable primary heat source and an additional heat source and by a solar thermal power plant the features according to the respective independent claim.
• a realization of the invention or a further development described is possible by a computer-readable storage medium on which a computer program is stored, which carries out the invention or a further development.
• the invention and / or any further development described can also be realized by a computer program product which has a storage medium on which a computer program is stored which carries out the invention and / or the development.
• the invention relates to a solar thermal power plant with a primary as well as with the primary, in particular via a heat exchanger (thermal) coupled secondary circuit.
• the primary circuit is a - to a non anpassba ⁇ ren primary heat source for a primary supply of heat - additional heat source to a (additional) increasing or decreasing the supply of heat a circulating in the primary circuit heat transfer medium, for example a
• the secondary circuit also has at least one thermi ⁇ rule energy storage.
• Circulation - can be based on in a process medium of the secondary circuit, such as in a feedwater or water vapor of a water-steam cycle, immanent energy storage.
• immanent energy storage for example, a throttling of a high-pressure turbine control valve, an overload introduction to the high-pressure turbine part, a condensate accumulation, a bypass of high-pressure preheaters and a Androsse- treatment of the bleed steam lines to the Hochlichvor Suitern known thermal energy storage ("Flexible Load Operation ⁇ tion and Frequency Support for Steam Turbine Power Plants ", Wichtmann et al., VGB Power Tech 7/2007, pages 49-55).
• thermal energy storage allows - in "retrieval” of the stored energy, eg by changing the throttling or building up the condensate - to some extent a change in performance in the secondary circuit. However, emptied it, ie "recall” there vomit ⁇ cherter energy, thermal energy storage.
• the additional heat source is used to replenish the at least one thermal energy storage in the secondary circuit.
• the additional heat input - be activated or increased by the additional heat source, such as a gas burner, on the heat transfer medium in the primary circuit, which - by the (thermal) coupling of the primary with the secondary circuit - to an additional energy input into the process medium of secondary cycle leads.
• the additional heat source such as a gas burner
• This additional energy input in the process medium of the seconding ⁇ dary cycle can fill the thermal energy storage are used in the secondary circuit then for the (re) - without that changes a power of the solar thermal power plant or drops.
• the corresponding solar thermal power plant according to the invention has a data processing means, in particular a programmed computing unit, in particular implemented in a block guide, which is set up such that the inventive method for power control and / or frequency control is performed.
• the inventive method allows for Leis ⁇ processing control and / or frequency or primary and / or secondarybalrequenzregelung as well as the corresponding erfindungsge ⁇ zeße solar thermal power plant a power control
• the invention proves to be considerably advantageous in many respects.
• the invention enables a power control operation of the solar thermal power plant.
• the invention ⁇ It enables frequency or primary and / or secondary control capability of the solar thermal power plant.
• required grid connection conditions can be met by a solar thermal power plant operated according to the invention.
• the plant operator also receives corresponding remuneration for the primary and / or secondary regulation.
• thermal energy storage means of the additional heat source is dependent on a degree of filling of the thermal energy storage. If, for example, the degree of filling of the thermal energy store falls below a certain level, it can be filled according to the invention.
• the thermal energy storage can always be kept at or above a predetermined degree of filling.
• the thermal energy store can always be filled completely or be.
• the data processing means according to the invention is part of a block of the guide ⁇ solar thermal power plant.
• the data processing ⁇ medium may be implemented in the block management.
• the solar thermal power plant just then such a block guide, which is adapted to carry out the invention.
• the additional sources of heat ⁇ le allows quick heat input to the heat transfer medium and / or that - within wide ranges - is re ⁇ Gelbar.
• several smaller additional heat ⁇ sources (“small denominations") - instead of a large additional heat source - may be useful here.
• the additional heat supply for the heat transfer medium or on the heat transfer medium a natural gas fire with a corresponding special natural gas burner or Natural gas boilers - or, in the case of smaller denominations - be with several natural gas burners or natural gas boilers or take place by means of such.
• Other additional firings, such as coal or oil firing, are also possible.
• a method for adjusting the nominal value of a nominal value in the solar-thermal power plant, in particular in the context of an automated power control or frequency or primary and / or secondary frequency control.
• a current power range ((power) window) for the solar thermal power plant is determined for at least one predetermined time during operation of the solar thermal power plant.
• This current power range of the solar thermal steam power plant can be limited by a lower control range limit and by an upper control range limit.
• the current output range can be performed using a current output from the current primary heat supply through the primary heat source as well as using egg nes power range from the additional heat source ⁇ be true.
• the current power range results from the current power from the current primary heat input by the primary heat source and / or the power range of the additional heat source.
• a lower Leis ⁇ tung reserve can be considered processing rules with at least one replacement percentage for a performance and / or frequency or primary and / or secondary frequency control.
• an upper power ⁇ reserve will also be taken into account with at least one replacement percentage for power control and / or frequency or primary and / or secondary frequency control.
• setpoint adjustment can then be a current, for example, predetermined by a load distributor, setpoint of the solar thermal power plant, if the currently specified setpoint is outside the current power range, be set in the current power range.
• the limits of the current power range can also be part of the current power range.
• a current power range (power window) for the power plant is determined here at a time of operation of this solar thermal power plant. This current power range is determined by the
• a power reserve with at least one power reserve component for power control and / or frequency or primary and / or secondary frequency control can then be "installed" respectively be taken into account.
• the limits of the current power range can be considered as belonging to the area. These limits can be as limitations or of this current power range / (power) window may then be connected as a limitation to a set point adjuster of this solar thermal power plant, which the currently pre give ⁇ external command value if it lies outside the power window, that within the current butterfens ⁇ ters sets or leads into the current power window (setpoint adjustment).
• the current setpoint to be adjusted can be pushed at least to / to the corresponding relevant upper or lower window limit.
• a further displacement of the target value within the current power window is possible, for example, to the middle of the power window, however it appears appropriate to the desired value "only" to the souppper- limit zoom down, thereby avoiding unnecessarily large power ⁇ fluctuations of the system.
• this solar thermal power plant located the predetermined or adjusted target value of this solar ⁇ thermal power plant within thiscabfens- ters, a power control, such as an electric Leis ⁇ tung ramp, the secondary or primary control, this solar thermal power plant is always possible or ensured.
• a power control such as an electric Leis ⁇ tung ramp
• ⁇ Telte Can performance that is, a maximum mobile performance of the solar thermal power plant according to the state a ⁇ of individual power limiting units (for example, feed pumps in operation).
• the current power window and / or its limits can - for information - also be transmitted to the load distributor. If this setpoint adjustment over a time course, ie at successive times, a time interval, for example an operating phase or an operating time ⁇ ses steam power plant / solar thermal power plant, souge leads ⁇ so shifts with each of the currently available primary heat quantity, in particular solar radiation , (over time) the power window, within which the setpoint - for ensuring the power control and / or frequency or primary and / or secondary frequency control of this steam power plant - may lie, only automatically up or down.
• a current setpoint which would now lie abruptly above the upper limit of the power window due to a reduction in the primary amount of heat, in particular when, for example, entry of clouds, and / or additional heat quantity capacity, can be adjusted accordingly by the setpoint adjuster, ie it can from the sinking upper Limitation automatically be guided down.
• the setpoint adjuster ie it can from the sinking upper Limitation automatically be guided down.
• the target value the overall by the displacement of the upper power window limit upward at his disposal presented exploit game and as much as mög ⁇ Lich (power), that is again limited by the translating upwardly power window limit, upward in the direction of the ur ⁇ originally predetermined outside the then performance window lying setpoint move.
• the setpoint value can initially also be left at the level with the upper power window limit shifting upwards until a new, current setpoint is specified.
• FIG 1 shows a control / control / system diagram of a power control capable solar thermal power plant according to an embodiment
• FIG 2 is a schematic representation of a nursefens ⁇ ters of the power control performance solar thermal power plant according to FIG 1,
• Embodiment 3 shows service areas and performance of a so-larthermischen power station in actual operation, and in procedurefol ⁇ give operating according to the embodiment.
• FIG. 1 shows a control / control / system diagram 60 of a power-setting solar thermal power plant 1.
• the power control capability of this solar thermal power station level 1 includes the ability of the secondary Rege ⁇ adjustment ( "Secondary grid frequency control").
• All of the information obtained in the solar thermal power plant 1, such as measured values, process or status data are displayed in a control room and there in a central processing unit 64, a block guide 61 - as a central control or control and / or regulating organ of solar thermal Power station 1, evaluated, with operating states of individual power plant components are displayed, evaluated, controlled, controlled and / or regulated.
• Control organs can intervene there by a control room operator (operator) on the Block Entry - as a central part of the host computer - or automatically in the operation of the solar thermal power plant 1 - and thereby the system - driven, for example, by opening or closing a valve or a valve or also by a change in an amount of fuel supplied.
• the power control and / or Frequenzating. Primary and / or secondary frequency control and the automatic load following operation 71 of the solar thermal power plant 1 is controlled via the block guide 61.
• This solar thermal power plant also in the following only briefly power plant 1, has two - via a multi-stage heat exchanger 40 (thermally) coupled - circuits 2, 3, a primary- (solar circuit) 2 and a secondary circuit (What ⁇ water vapor Cycle) 3, ie it operates on a two-circuit principle.
• a multi-stage heat exchanger 40 thermoally coupled - circuits 2, 3, a primary- (solar circuit) 2 and a secondary circuit (What ⁇ water vapor Cycle) 3, ie it operates on a two-circuit principle.
• the primary circuit or solar circuit 2 is a mostly a plurality of in a solar collector array 11 to ⁇ ordered solar panels 12 by flowing town umanme ⁇ dium 13, here a (thermal) oil 13, there heated by solar radiation 10 (primary heat / Energy source or primary energy / heat input or input, primary energy / source 10).
• the heated heat transfer medium 13 also flows through a natural gas fired natural gas boiler 21, in which the "primary heated” thermal oil 13 is further heated 20 or can (additional heat source / supply, additional energy / source 20).
• This additional heat source 20 on the one hand used to operate the plant 1 economically optimal, the - uncontrollable fluctuations unsuccessful - power from the primary power source 10 to stabilize and - described as nachfol ⁇ quietly in detail - the frequency control ability and the automatic load-following operation 71 of the Power plant 1 to ⁇ possible.
• the additional heat source 20 is used to keep the thermal oil 13 liquid ("anti-freeze protection").
• the thermal oil 13 flows through the heat exchanger 40, where it - at least partially - the absorbed thermal energy from primary and possibly additional heat 10, 20 to the secondary circuit 3, the water-steam circuit 3, or. to the local process medium 41, ie to a (food) water 41 transmits.
• the (food grade) is where water is converted into steam 41 41, ie it is heated, vaporized and superheated, and flows through conduits 43 to the steam turbine 42, in which the water vapor 41 releases a part of its energy by relaxation as kinetic energy to the turbine 42.
• the mechanical power is then converted into electrical power, which is fed as electrical current into a power grid 33 45.
• a condenser 46 is arranged, in which the steam 41 - after relaxation in the turbine 42 - transmits most of its heat to cooling water. During this process, the vapor 41 liquefies by condensation ⁇ tion.
• a feedwater pump 48 conveys the resulting liquid water 41 as feed water 41 again to the multi-stage heat exchanger 40, whereby the secondary circuit 3 is closed ⁇ sen.
• FIG 1 shows example here such thermi ⁇ rule memory 63 in the form of a throttling of a high-pressure turbine control valve 47 and a high pressure turbine control valve throttle 47th
• throttling of the high-pressure turbine control valve 63 controlled by the block guide 61 permits the targeted "call-off" of the feed water 41 or water vapor 41 immanent energy, whereby a targeted power change in the secondary circuit 3 - in the context of frequency control - is possible.
• Turbine control valve 47 has been retrieved for the required power change in the frequency control energy / power, so this thermal memory 63, 47 - if necessary level or filling level depending - be filled again.
• this additional energy input is transferred to the secondary circuit 3 and is available there for the replenishment of the used thermal storage 63, 47.
• the throttling 47 is returned to its original state by block guide 61 - and the thermal reservoir 63, 47 is filled again.
• FIG 1 shows, be it - via corresponding line ⁇ compounds 62 - the block guide 61 in particular, the performance of the solar panel 30, the operating state of the gas ⁇ lights 34, the state of the throttling 35 and the power generated from the power plant 1 31 as well as the Mains frequency 32 of the power network 33 transmitted.
• FIG 1 further illustrates, then the control of the natural gas firing 20 - via control / regulation of the natural gas flow 22, 73 - and the throttling of the high pressure
• Turbine control valve 47 - via the control / regulation of the high-pressure turbine control valve throttle 47, 72- also through the block guide 61. That is, the system 1 in the frequency or primary and / or secondary controlled Lastfole réelle 71 - after automatic specification of the load distributor 14th - be driven.
• the plant 1 or the turbine 42 is in order to power control, i. in modified sliding pressure mode with throttled valves, driven.
• the achievable power is limited only by a determined optional power 96, i. a maximum mobile power of the power plant 1 as a function of the state of individual power-limiting units (for example, feed pumps in operation).
• FIG. 2 schematically illustrates the power following mode / load setting mode 71 or the corresponding power range 80 of the power plant 1 for the power follow-up mode b or. 71. possible by the system 1 operating power sequence b and 71, the system is in modified variable-pressure operation with ge ⁇ throttled valves is driven. Corresponding performance curves or the operating behavior are or is shown in more detail in FIG.
• the power range (power window / "range of adaptability") 80 in which the power plant 1 can be automatically power-controlled, that is to say in the "load setting mode” 71, is subject to certain restrictions.
• the recipesoll ⁇ value (setpoint) 70 of the system 1 must be in order to be automatically power controlled.
• the boundaries 90 of the power window 80 are connected as a limitations on a power ⁇ set point adjuster (not labeled).
• the power window 80 Downwardly the power window 80 is initially limited by the performance of the currently available primary power 81 plus the power from the minimal mög ⁇ union feuerbaren amount of natural gas 82; At the top, the power window 80 is initially limited by the power from the current available primary energy 81 plus the power from the maximum possible amount of flammable gas 83. Further, at the lower limit 90 of the power window 80, a natural gas fire amount is provided to achieve the economic optimum 86 , That is, the lower limit 90 of the Leis ⁇ tung window 80 shifts by this - considered economic boundary conditions - amount upwards.
• Power plant 1 as long as it is within these "reserve limits" 91 (lower limit of the power range / window in the "load setting mode"), 92 (upper limit of the power range / window in the "load setting mode”) is driven, ie the setpoints are set within these limits 91, 92, quiet is controllable.
• the lower power reserve 84 is composed of a reserve for underfiring at power ramps, a damper reserve, a reserve for unloading the vapor storage and the load control reserve and the reserve for the primary regulation;
• the upper power reserve 85 is composed of a reserve for overshoot at power ramps, the damping reserve, a reserve for steam storage loading, and the reserve for power control and the reserve for the primary control.
• This power window 80 may lie within which the target value 70 of the plant 1, is dynamic, ie it moves during the operation of the power plant 1 in depen ⁇ dependence of - fluctuating or changing - available primary energy 10, 93.
• the power window 80 shifts upwards 94 represents less primary energy (cloudiness) available, shifts s I down the performance window 95.
• the achievable power of the power plant 1, "Ranks of Operation" 100 is limited only by a determined optional power 96, ie a maximum drivable power of the power plant 1 depending on the state of individual power-limiting units (eg feed pumps in operation). . After below the traveling performance of the system is 1 le ⁇ diglich limited by a maximum (minimum) Last 97 wel ⁇ che for stable operation of the plant 1 at least emergency is agile.
• the system 1 is to the actual ⁇ value tracked and load distributor influence or primary / secondary control influence switched off (actual operation 74). As FIG 1 shows, the power plant 1 by - part of the
• Load distributor 14 Specification of the (power) setpoint, MWel, 70 driven. From this predetermined desired value 70, corresponding setpoint values for the natural gas firing control 73 and the turbine control 72 are determined - and the system 1 is regulated or driven accordingly.
• FIG 3 shows in curves the power ranges and the operating performance of the solar thermal power plant 1 in actual operation a, c or 74 and in the power following mode b or 71 ("load setting mode")
• Curves in [%] (axis 105) over time t (axis 106) angege ⁇ ben.
• the curve 101 shows the course of the power available through the primary heat source / supply 10.
• the curve 104 shows the profile of the (power) desired value of Appendices 1 ⁇ ge;
• Curve 107 shows the actual power output of system 1.
• the power plant 1 is operating in the varnishbe- b and 71 offset, in which the system is operated until the time point ⁇ B.
• the power window 80 "opens" with the lower power window limits 102 and 91 shown in FIG. 3 and the upper power window limits 103 and 92, respectively.
• the setpoint becomes approximately centered at time A .
• the Leis ⁇ tung window 80 driven As FIG 3 also shows, shifts with changing the per ⁇ wells currently available "primary energy" 10, 101, the power window 80, within which the target value 70 - for ensuring the power control 71 in the solar thermal Power plant 1 - may lie (curve C), up or down.
• a current setpoint value 70 which as a result of an increase in the primary energy 10 would suddenly be below the lower limit 102, 91 of the power window 80 (point E), is adjusted in accordance with the setpoint adjuster, i. it is automatically guided upwards by the rising lower limit 102 (course / phase d).

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• 2012
  • 2012-03-16 DE DE102012204219A patent/DE102012204219A1/de not_active Ceased
• 2013
  • 2013-03-13 WO PCT/EP2013/055120 patent/WO2013135761A2/fr not_active Ceased

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