EP3711132A1 - Verfahren zum betreiben eines eine wärmepumpe aufweisenden wärmespeichersystems - Google Patents
Verfahren zum betreiben eines eine wärmepumpe aufweisenden wärmespeichersystemsInfo
- Publication number
- EP3711132A1 EP3711132A1 EP18796043.0A EP18796043A EP3711132A1 EP 3711132 A1 EP3711132 A1 EP 3711132A1 EP 18796043 A EP18796043 A EP 18796043A EP 3711132 A1 EP3711132 A1 EP 3711132A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- heat pump
- heat
- local
- energy management
- power
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000005338 heat storage Methods 0.000 claims description 44
- 230000002349 favourable effect Effects 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 claims description 3
- 230000002123 temporal effect Effects 0.000 abstract 1
- 238000010521 absorption reaction Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 239000003651 drinking water Substances 0.000 description 3
- 235000020188 drinking water Nutrition 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000006854 communication Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 239000008236 heating water Substances 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000007175 bidirectional communication Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
- F24D19/1066—Arrangement or mounting of control or safety devices for water heating systems for the combination of central heating and domestic hot water
- F24D19/1081—Arrangement or mounting of control or safety devices for water heating systems for the combination of central heating and domestic hot water counting of energy consumption
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H15/00—Control of fluid heaters
- F24H15/10—Control of fluid heaters characterised by the purpose of the control
- F24H15/144—Measuring or calculating energy consumption
- F24H15/148—Assessing the current energy consumption
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H15/00—Control of fluid heaters
- F24H15/10—Control of fluid heaters characterised by the purpose of the control
- F24H15/156—Reducing the quantity of energy consumed; Increasing efficiency
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H15/00—Control of fluid heaters
- F24H15/10—Control of fluid heaters characterised by the purpose of the control
- F24H15/16—Reducing cost using the price of energy, e.g. choosing or switching between different energy sources
- F24H15/164—Reducing cost using the price of energy, e.g. choosing or switching between different energy sources where the price of the electric supply changes with time
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H15/00—Control of fluid heaters
- F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
- F24H15/375—Control of heat pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H15/00—Control of fluid heaters
- F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
- F24H15/395—Information to users, e.g. alarms
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H4/00—Fluid heaters characterised by the use of heat pumps
- F24H4/02—Water heaters
- F24H4/04—Storage heaters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/02—Heat pumps of the compression type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/022—Compressor control arrangements
-
- 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
- H02J3/14—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by switching loads on to, or off from, network, e.g. progressively balanced loading
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D2200/00—Heat sources or energy sources
- F24D2200/02—Photovoltaic energy
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D2200/00—Heat sources or energy sources
- F24D2200/12—Heat pump
- F24D2200/123—Compression type heat pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H15/00—Control of fluid heaters
- F24H15/10—Control of fluid heaters characterised by the purpose of the control
- F24H15/176—Improving or maintaining comfort of users
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H15/00—Control of fluid heaters
- F24H15/10—Control of fluid heaters characterised by the purpose of the control
- F24H15/184—Preventing harm to users from exposure to heated water, e.g. scalding
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H15/00—Control of fluid heaters
- F24H15/20—Control of fluid heaters characterised by control inputs
- F24H15/212—Temperature of the water
- F24H15/223—Temperature of the water in the water storage tank
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H15/00—Control of fluid heaters
- F24H15/40—Control of fluid heaters characterised by the type of controllers
- F24H15/414—Control of fluid heaters characterised by the type of controllers using electronic processing, e.g. computer-based
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H15/00—Control of fluid heaters
- F24H15/40—Control of fluid heaters characterised by the type of controllers
- F24H15/414—Control of fluid heaters characterised by the type of controllers using electronic processing, e.g. computer-based
- F24H15/45—Control of fluid heaters characterised by the type of controllers using electronic processing, e.g. computer-based remotely accessible
- F24H15/457—Control of fluid heaters characterised by the type of controllers using electronic processing, e.g. computer-based remotely accessible using telephone networks or Internet communication
-
- 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
- H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
- H02J2310/10—The network having a local or delimited stationary reach
- H02J2310/12—The local stationary network supplying a household or a building
- H02J2310/14—The load or loads being home appliances
-
- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
-
- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
-
- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
- Y02B70/3225—Demand response systems, e.g. load shedding, peak shaving
-
- 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
- Y04S20/222—Demand response systems, e.g. load shedding, peak shaving
-
- 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
- Y04S20/242—Home appliances
-
- 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
- Y04S20/242—Home appliances
- Y04S20/244—Home appliances the home appliances being or involving heating ventilating and air conditioning [HVAC] units
Definitions
- the present invention relates to a method according to the preamble of claim 1. Such a method is used to operate a
- the heat pump is connected to a local electrical grid
- the local energy management controls electrical currents in the local electrical grid and between the local electrical grid and an external electrical grid flowing electrical currents, and wherein one associated with the operation of the heat pump electrical load is shifted in time and wherein the load shift is controlled by the local energy management.
- Heat pumps are used in particular for heating buildings and heat in their operation large heat storage such as heating water circuits,
- the heat storage system comprises in this case, in particular, the heat pump and the heat storage.
- the heat pumps used for this purpose are increasingly of the modulating heat pump type. Modulating heat pumps dynamically adjust their heat output through the heat pump's compressor to the actual power required and are therefore more efficient to use than constant-speed clocking heat pump compressors, which only allow for on-off operation.
- the local electrical grid is, for example, the electrical grid of a building or a collection of buildings.
- the external electric power grid is, for example, a larger area and cities with electricity supplying power network, which is fed by power plants.
- Local energy management is a term that covers both procedural aspects and device aspects of supplying the heat pump with electrical energy. For example, the local energy management can
- Be control program that runs in a control electronics of the heat pump or in a separate electrical control unit.
- the electrical load is the power or energy absorbed by the heat pump.
- the SG Ready interface can also be used for load shifting in conjunction with photovoltaic systems, in order to extend the heat pump's running time in the presence of high yields of the photovoltaic system, thereby increasing self-consumption and avoiding feed-in.
- the SG Ready interface is of limited use. It has two major disadvantages: one The first disadvantage is that it is capable of unidirectional communication only.
- the heat pump can receive a signal from the grid operator of an external electrical grid to control it. Due to the missing return channel, the control device located outside the heat pump, whether it be the local energy management of a local power grid or a large number of local power grids, is supplied with electrical energy
- Heat pump will respond to the recommendation, nor is it possible to influence the performance.
- the heat pump can be switched on and off only digitally in the prior art.
- the present invention differs by the characterizing features of claim 1. These provide that a power consumption of the heat pump is controlled so that this power consumption follows a specified by the local energy management default value for the electrical power consumption, if heat-side requirements allow this to the heat storage system.
- Heat pump via a first information interface provides information about current operating parameters of the heat storage system.
- the first information interface is preferably a digital interface, in particular an Internet or network-capable interface.
- Interfaces can be purchased and can communicate with other devices by cable or by radio.
- the interface can also be used as part of the control program of the heat pump or the
- the invention relates in In this context, it is not the structural design of this interface but its programmable function in conjunction with the local energy management and the direct control of the heat pump.
- Energy Management can take into account the current state of the heat storage system in the control of power flows.
- Heat-side requirements arise, for example, from the fact that the temperatures of the heat storage connected to the heat pump should be within certain limits.
- the heat pump can be turned on when it is convenient to receive power from the external power grid or from a local grid associated photovoltaic system. Such a situation can occur, for example, when there is currently a lot of wind power or solar power in the external power grid or in the local power grid.
- the flexibilities are defined as a currently possible power range or currently possible discrete stages for the
- Influencing factors such as system state, efficiency, blocking periods,
- Heating requirement or as a recordable by a heat storage capacity of the heat storage system recordable electrical energy.
- the invention allows a more accurate integration of the heat pump in a local energy management system and improves the usability of the heat pump for web services. Through the interface acquired the local
- a further preferred refinement is characterized in that the information additionally contains information about the time necessary for achieving the abovementioned values (power range, currently possible discrete stages for power consumption, absorbable electrical energy).
- the information contain information about fixed start-up sequences when the heat pump is at a standstill.
- the information for heat pumps which also have an auxiliary heater in addition to a compressor, be provided separately for the compressor and the auxiliary heater.
- Heat pumps which in addition to a compressor also have an additional heater, for the compressor and the auxiliary heater is done separately.
- a network operator or a local energy management system can plan more accurately, because the current flexibilities are known and because one can optimize the granularity by specifying a power standard value, e.g. can follow the current surplus of a photovoltaic system.
- Heat storage of the heat storage system can be parameterized by an operator or by the local energy management. It is further preferred that, in the case of a heat storage system having a plurality of heat accumulators, independent temperature elevations for each heat accumulator can be parameterized.
- a further preferred embodiment is characterized in that also permissible maximum values for the respective flow or storage temperatures of the heat storage can be parameterized.
- Heat storage system in terms of a compromise between the greatest possible flexibility and the least possible loss of comfort (for example, in the heating) heat storage individually optimized.
- the local energy management sends as a default value for the electrical power consumption of the value of the current excess of favorable energy and the heat pump increases their power consumption accordingly or turns on if it is at a standstill.
- Load displacement heat is generated with cheap available electrical energy and so a later, resulting in a higher price reference from the external power network reduced or avoided.
- a further preferred embodiment is characterized in that if the local energy management does not output a default value or outputs a default value that is less than one to maintain a normal, that is not excessive temperature of a heat accumulator of the
- Heat storage system required power consumption of the heat pump, or if this normal temperature is exceeded, the
- Heat pump discards the specification of the local energy management system and changes their performance to meet the heat demand. In this way, undesirable loss of comfort, as they can occur, for example, if the flow temperature of the heating system is too low, is avoided.
- periods are determined by the local energy management in which cheap energy is available and the first
- Information interface is used to allow the heat pump to generate as much heat during these periods, so that they must not be generated sooner or later to higher energy costs.
- Energy management system continuously sends the current surplus power of the photovoltaic system as a default value to the heat pump, if it has previously indicated through the information interface that it can be operated in this power range. In this way, the electrical power generated by the photovoltaic system can be absorbed by self-consumption in the local power grid and a later purchase of (expensive) power from the external power grid can be reduced or at least avoided.
- a further preferred embodiment is characterized in that the local energy management system otherwise feeds the energy that can not be used by the heat pump directly into other flexible consumers connected to the local energy management.
- the local energy management determines the electrical load of the consumers of electrical energy connected to the local energy management and offers them to the operator of the external power network via a second information interface.
- This embodiment allows a needs-based provision of network services such as a decrease of temporarily excess available wind power.
- a further preferred embodiment is characterized in that when such a service is called up, the local energy management uses the setpoint specification in order to obtain the retrieved flexibility (eg
- FIG. 1 is a block diagram of a heat pump having
- Heat storage system in a local power grid connected to an external power grid
- Figure 2 curves of temperatures of a heat storage of a heat pump as they occur in the prior art and in one embodiment of a method according to the invention
- FIG. 3 shows curves of electric power corresponding in time to the curves according to FIG.
- FIG. 1 shows a local power network 10, which has a heat pump 12, a photovoltaic system 14, a plurality of further consumers 16.1 - 16. n, a local energy management 18, a first information interface 20 and a second information interface 22.
- the first information interface 20 is functionally located between the local power management 18 and an immediate controller 24 of the heat pump 12.
- the second information interface 22 is functionally located between the local power management 18 and an immediate controller 24 of the heat pump 12.
- the Interfaces 20, 22 are preferably digital interfaces, in particular Internet or network-compatible interfaces.
- the local electric power network 10 is, for example, the power grid of a building or a collection of buildings.
- the external power grid 26 is, for example, a larger area and cities with electric power
- the local power management 18 has a control unit with a processor and a memory.
- the process aspects of the local power management 18 are implemented by the processor using a program stored in memory.
- the interfaces 20, 22 may also be part of the control unit. In this case, the respective interface is just an extension of the software.
- the heat pump 12 is a modulating heat pump 12, as described above. It has an electrically driven compressor 28 and the immediate control 24. Under the concept of direct control 24 here procedural aspects and
- the heat pump 12 operates in particular so that set parameterizable temperatures in the connected heat storage, which temperatures can follow, for example, a likewise parameterizable time course.
- Such a static parameterization is carried out, for example, by an operator or by the local energy management 18.
- the immediate controller 24 includes a processor and memory. Immediate control is done by the processor using a program stored in memory. At the execution of the executed for the realization of the invention
- Process steps may involve the local power management 18 and / or one or both interfaces 20, 22 and / or the immediate controller 24.
- the heat pump 12 may have an electric auxiliary heater 30.
- the heat pump 12 is a component of a heat storage system having one or more heat storage. Examples of such heat storage are, for example, Schumachernikaction 32 of a building, a hot water drinking water storage 34 and buffer 36 of the building.
- the other consumers 16.1 - 16. n are, for example, household appliances such as washing machines and dishwashers.
- Heating water circuits 32, the hot water drinking water storage 34 and the buffer memory 36 represent heat flows.
- the remaining connection lines represent signal connections that are both wired
- Line-bound connections can be realized as a bus system.
- the heat pump 12 provides information about the current flexibilities via the first information interface 20.
- the flexibilities result, for example, from differences between actual temperature values and maximum temperature values or
- Temperature sensors are detected.
- Heat pump 12 taking into account current factors such as
- the intervention results in a load shift.
- the local energy management 18 continuously determines whether cheap energy is available. Cheap energy is available, for example, when a photovoltaic system 14 provides more electrical power than the heat pump 12 currently required as part of their immediate control 24 or just when electricity from the external power grid 26 can be obtained at a low price.
- An intervention may also be made to take advantage of the flexibility of the heat pump 12 for network services. Also in this case sends the local energy management 18 of the heat pump 12 via the first information interface 20 default values for the electrical power to be absorbed.
- a flexibility that is, a currently possible range for the absorption of electrical power by the heat pump 12 is for example between 1, 0 kW and 3.5 kW. This range varies depending on the selected flow temperature, the source temperature, the system state (e.g.
- This information may be communicated to the local power management 18 either through a continuous range (minimum-maximum), discrete stages (1kW, 2kW, 3kW) or via a mixture of both from the direct controller 24 of the heat pump 12 via the first information interface 20. Ideally, this will be communicated to the local power management 18 either through a continuous range (minimum-maximum), discrete stages (1kW, 2kW, 3kW) or via a mixture of both from the direct controller 24 of the heat pump 12 via the first information interface 20. Ideally, this will be communicated to the local power management 18 either through a continuous range (minimum-maximum), discrete stages (1kW, 2kW, 3kW) or via a mixture of both from the direct controller 24 of the heat pump 12 via the first information interface 20. Ideally, this will be communicated to the local power management 18 either through a continuous range (minimum-maximum), discrete stages (1kW, 2kW, 3kW) or via a mixture of both from the direct controller 24 of the heat pump 12 via the first
- the immediate controller 24 transmits the
- Heat pump 12 the local energy management on the first
- the local energy management 28 of the immediate control 24 via the first information interface 20 additionally transmitted information about the time required to reach a desired flow temperature.
- the local energy management 18 is additionally provided with information about fixed start-up sequences by the direct control 24 via the first information interface 20 if the
- Heat pump 12 is at a standstill.
- FIG. 2 shows time profiles of temperatures T of the heat accumulators, as occur in the prior art and an embodiment of the present invention, over the time of one day in a heat pump 12 and a photovoltaic system 14 having local power supply network.
- FIG. 3 shows corresponding courses of power values in the local power grid.
- the buffer memory 36 is associated with a normal temperature 40, which should set in a normal operation.
- the normal operation is an operation in which a load shift does not take place.
- the time profile of the normal temperature 40 and the normal electrical power 42 each represent a normal course in which the recording of the normal electrical power 42 by the heat pump 12 serves to set a predetermined target temperature T_soll by a performed by the direct control 24 of the heat pump 12 control. A load shift does not take place in these courses.
- the daytime course of the electrical power 44 of a photovoltaic system 14 of the local power grid 10 has, for example, the shape shown in FIG. 3 with a maximum lying in the midday hours.
- Temperature actual value adjusts itself at constant temperature setpoint T_soll an equilibrium at which for the rest of the day the normal temperature 40 and also the recording of the normal electrical power 42 is approximately constant when no load shift occurs.
- the electrical power 44 generated by the photovoltaic system 14 exceeds the normal electrical power consumption 42 of the heat pump 12.
- a signal of an SG ready - Interface is present, which recommends a (Lastverschiebungs-) operation of the heat pump 12 to avoid, for example, an undesirable feed into the external power grid 26.
- the direct control 24 of the heat pump 12 reacts to this signal with a maximum increased absorption of a first load displacement power 48 by the heat pump 12, which must be obtained from the external power network 26 inadequate power 44 of the photovoltaic system 14.
- the first load shift temperature 46 increases and reaches its maximum allowable value T_max at time t3.
- the immediate control 24 of the heat pump 12 responds with a reduction in the intake of the first
- the power 44 provided by the photovoltaic system 14 drops below the power requirement of the heat pump 12 again.
- the heat pump 12 is switched off at still above the temperature setpoint T-soll lying temperature, so that in this case recorded by the heat pump first load shift performance drops to zero.
- the then decreasing first load shift temperature reaches its setpoint value at time t6, which leads to the heat pump 12 being switched on again.
- Load shifting power 52 which is not greater than the power 44 provided by the photovoltaic system 14.
- the heat pump 12 is operated with less electrical energy between the times t2 and t3 than in the first load shift known from the prior art (SG-Ready).
- second increases are also possible.
- the load-shift temperature only reaches its maximum permissible value t-max at t3 ⁇ t4 ⁇ t5 at time t4. Then it will be up to the second
- Load shifting performance 52 reduces increased electrical power consumption back to an equilibrium value at which the second
- Load shift temperature 50 is initially maintained at its maximum allowable value T_soll. At the time point t5, at which the power 44 provided by the photovoltaic system 14 is higher than that of the heat pump 12, while the second load shift temperature 50 is still higher, in order to maintain the increased second power level
- the heat pump 12 is in this embodiment of the invention with that of the
- Photovoltaic system 14 provided power 44 continues to operate.
- the second load-shift temperature thereby decreases more slowly than in the first load shift generated by the prior art operating on the SG-Ready interface.
- the reference of electrical energy which is characterized by the area between the times t2 and t3 and the progress of the power provided by the photovoltaic system 14 44 and that of the Area lying over the SG-ready interface set first load displacement performance 52 results in the invention advantageously avoided.
- Energy management 18 then sends as a default value for the electrical Power consumption the value of the current surplus, and the
- Heat pump 12 increases your power consumption accordingly, or switches on, if it is at a standstill. This is controlled by the immediate controller 24. The excess comes from the photovoltaic system 14 in the example considered here.
- the heat pump 12 When the maximum flow temperature is then reached, the heat pump 12 signals this to the local energy management 18 via the first information interface 20 in that no or only a reduced possible power consumption is offered as flexibility. At the same time, the heat pump 12 (or immediate controller 24) reduces its electrical power consumption or shuts down.
- the local power management 18 sends no or too low a setpoint, or if it is corrupted by e.g. sudden increased thermal loads in the
- Normal operation is set to be set target flow temperature T_soll without load shift, the heat pump 12 rejects the default of the local energy management 18 and changed their performance to this
- the mode of operation of the local energy management system 18 is independent. It determines periods of favorable energy or favorable performance and uses the first information interface 20 to allow the heat pump 12 to generate as much heat as possible during these periods so that it does not later become higher tariffs / energy costs must be generated. If, as in the case of photovoltaics, the power of cheap energy is limited, then sends the local
- Energy Management 18 continuously the currently available power of the photovoltaic system 14 as a target value specification to the heat pump 12, if this previously indicated via the first information interface 20 that it can be operated in this power range. Otherwise, the local energy management 18 uses the energy that can not be used by the heat pump 12 directly in other flexible consumers 16.1 - 16. n, for example in
- Household appliances such as washing machines.
- a flexible consumer is a consumer of electrical power that increases the electrical power
- a second information interface 22 for network services (for example, control power, timetable optimization, distribution network optimization). If such a service is called up by the external power grid, the local energy management 18 uses a setpoint specification received in this case from the external power network 26 via the second information interface 22 to obtain the requested flexibility (eg power reduction by 1 kW or additional power of 1 kW ) implement.
- All interfaces 20, 22 are digital interfaces, preferably Internet or network-compatible interfaces.
- FIG. 4 shows a flowchart as an exemplary embodiment of a
- the heat pump 12 provides information about current operating parameters of the heat storage system over the first
- Information interface 20 ready, the information on current flexibilities of the heat pump 12 included.
- step 56 the local energy management determines periods in which cheap energy (for example solar power or favorable electricity tariffs) is available and thus checks whether favorable energy and flexibilities of the heat pump are available.
- cheap energy for example solar power or favorable electricity tariffs
- step 58 the first information interface 20 is used in step 58 to allow the heat pump 12 to generate as much heat as possible during these periods so that it does not have to be generated sooner or later at higher energy costs. Otherwise, the process returns to step 54.
- step 58 the power consumption of the heat pump 12 is controlled so that this power consumption follows a predetermined by the local power management 18 default value for the electrical power consumption, as far as heat-side requirements for the heat storage system allow.
- step 60 it is checked whether an abort condition is fulfilled.
- Termination condition is met, for example, when the maximum temperature T_max is reached. If this is not the case, the program returns to step 58, so that the loop from steps 58 and 60, if necessary, returns.
- step 62 An abort condition is also met if the local power management 18 does not output a default value or outputs a default value that is less than a power consumption of the heat pump 12 required to maintain a normal, that is not excessive, temperature of a heat accumulator of the heat storage system or if this is normal Temperature is below.
- the default of the local power management 18 is discarded and the heat pump 12 changes its electrical power consumption to meet the heat demand. The method may then proceed to step 54.
- the local energy management 18 can also offer the flexibility present in the local power grid 10 to the external power grid 26 via the second information interface 22.
- the external power grid 26 retrieves such flexibility via the second information interface 22.
- the Energy Management 18 from the external power grid 26 requested flexibility on the first information interface 20 from.
- the requested flexibility in this case consists of a momentary change in the electrical power drawn from the external power network 26 (power supply), for Example from a reduction of the grid reference by 1 kW or from an additional grid reference of 1 kW.
- the power with which the favorable energy is available is limited
- the local energy management 18 may otherwise feed the energy not usable by the heat pump 12 directly into other flexible consumers (16.1, ..., 16. n) connected to the local energy management 18.
- the local power management 18 may be the electrical load of the loads connected to the local power management 18
- Information interface 22 offer the operator of the external power network 26.
- the method when retrieving such a service, may use the local power management 18 the setpoint default to implement the fetched flexibility.
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- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Power Engineering (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE102017220414.1A DE102017220414A1 (de) | 2017-11-16 | 2017-11-16 | Verfahren zum Betreiben eines eine Wärmepumpe aufweisenden Wärmespeichersystems |
PCT/EP2018/079882 WO2019096587A1 (de) | 2017-11-16 | 2018-10-31 | Verfahren zum betreiben eines eine wärmepumpe aufweisenden wärmespeichersystems |
Publications (1)
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EP3711132A1 true EP3711132A1 (de) | 2020-09-23 |
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ID=64051600
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EP18796043.0A Pending EP3711132A1 (de) | 2017-11-16 | 2018-10-31 | Verfahren zum betreiben eines eine wärmepumpe aufweisenden wärmespeichersystems |
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EP (1) | EP3711132A1 (de) |
DE (1) | DE102017220414A1 (de) |
WO (1) | WO2019096587A1 (de) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
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EP3865778A1 (de) * | 2020-02-13 | 2021-08-18 | E.ON Sverige AB | Wärmeenergieanordnung |
EP3961980A1 (de) * | 2020-08-27 | 2022-03-02 | Fronius International GmbH | System und verfahren zum steuern einer wärmepumpe |
DE102020123355A1 (de) * | 2020-09-08 | 2022-03-10 | Vaillant Gmbh | Wärmepumpenanordnung und Verfahren zu ihrem Betrieb |
DE102020215070A1 (de) | 2020-11-30 | 2022-06-02 | Viessmann Climate Solutions Se | Verfahren, system und computerprogramm-produkt zum ermitteln eines lastverschiebepotentials eines elektrischen verbrauchers |
WO2022123266A2 (en) * | 2020-12-10 | 2022-06-16 | Mixergy Limited | Improvements in heating systems |
CN113237075B (zh) * | 2021-04-30 | 2022-03-22 | 西安交通大学 | 烟气余热回收系统的设计优化及调控方法 |
DE102021213447A1 (de) * | 2021-11-29 | 2023-06-01 | Robert Bosch Gesellschaft mit beschränkter Haftung | Verfahren zum Betrieb eines Wärmepumpensystems und Wärmepumpensystem |
DE102022107048A1 (de) | 2022-03-25 | 2023-09-28 | Viessmann Climate Solutions Se | Verfahren zum Betrieb einer energietechnischen Anlage |
EP4435333A1 (de) * | 2023-03-24 | 2024-09-25 | Ariston S.p.A. | Wärmepumpensystem mit selbstverbrauchsmanagement und bedarfsreaktionsfunktionen |
DE102023109037A1 (de) * | 2023-04-11 | 2024-10-17 | Vaillant Gmbh | COP-optimierte Vorlauftemperaturregelung für eine Wärmepumpe |
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JP5365358B2 (ja) * | 2009-06-16 | 2013-12-11 | 東京電力株式会社 | 電力負荷制御装置および電力負荷制御方法 |
JP5025834B2 (ja) * | 2010-11-10 | 2012-09-12 | パナソニック株式会社 | 運転計画方法、運転計画装置、ヒートポンプ式給湯システムの運転方法、及びヒートポンプ式給湯暖房システムの運転方法 |
CN102959339A (zh) * | 2011-06-06 | 2013-03-06 | 松下电器产业株式会社 | 热泵的运转方法及热泵系统 |
JP5494696B2 (ja) * | 2012-02-27 | 2014-05-21 | ダイキン工業株式会社 | ヒートポンプ機器エネルギー管理装置 |
DE102012011119A1 (de) * | 2012-06-05 | 2013-12-05 | Diehl Ako Stiftung & Co. Kg | Lokales Energiesystem |
DE202014000950U1 (de) * | 2014-01-31 | 2014-04-07 | Wolfram Hennemann | Vorrichtung zur Stellung / Regelung der Leistungsaufnahme von Geräten, die einen Kompressor zur Realisierung ihrer Funktion verwenden |
DE102016015503B4 (de) * | 2016-12-24 | 2022-09-08 | Consolar Solare Energiesysteme Gmbh | Verfahren zur Temperierung mindestens eines Gebäuderaums mit Prognose und Optimierung der Energieaufnahme |
ES2635647B2 (es) * | 2017-04-17 | 2018-04-24 | Ecoforest Geotermia, S.L. | Sistema y método de aprovechamiento de excedentes de energía eléctrica procedentes de una instalación con generación eléctrica renovable |
-
2017
- 2017-11-16 DE DE102017220414.1A patent/DE102017220414A1/de active Pending
-
2018
- 2018-10-31 WO PCT/EP2018/079882 patent/WO2019096587A1/de unknown
- 2018-10-31 EP EP18796043.0A patent/EP3711132A1/de active Pending
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DE102017220414A1 (de) | 2019-05-16 |
WO2019096587A1 (de) | 2019-05-23 |
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