• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:

    公开号:DK201000069U1
    申请号:DK201000069U
    申请日:2010-04-16
    公开日:2010-07-23
    发明作者:Funda Zdenek
    申请人:Auxilien A S；
    IPC主号:
    专利说明:

    DK 2010 00069 U3
    Energy system with an extended control range for electrical power
    Technical area
    The generation relates to an energy system with an expanded range of electrical power.
    The prior art
    One of the major problems associated with the use of electricity is that it is impossible to store it in its original form as energy. Therefore, the balance between electricity production and consumption must be maintained at all times. In any electricity grid, this responsibility lies with the system operator who provides support services from power plants and heat plants. A support service provides an opportunity for an electricity provider to respond very quickly to the system operator's request for a change in output power.
    For the purposes of this application, power plants and heat plants are also referred to as "sources" in the text of the present utility model application.
    Supportive services can only be provided by some types of sources. Eg. they are not normally provided by nuclear power plants, or only to a minimal extent. Support services are to a greater extent provided by heat and power plants that produce electricity and heat from coal or gas. However, the area of providing support services is limited by the installed output power of the source at the top and the minimum technical output at the bottom. The minimum technical output indicates the output power whereby the source can still be operated in a stable manner. For some sources, this area is further limited by the obligation to provide heat.
    The reason why it is impossible to reduce the output power of a heat source for the production of electricity simply by reducing the output power of the turbine is a certain regulatory area for the operation of the turbine and steam boilers, whereby the turbine and boiler can be operated. In addition, in the case of high consumption of heat from extraction-condensation turbines, the high forced production of electricity in the high-pressure part of the turbine before the extraction is caused by the high flow that must be obtained in order for heat to be delivered through the high-pressure part of the turbine and heat recovery of the consumer. The steam turbine can be shut down and the heat supply can be obtained by reducing steam (throttling and cooling with high parameters - pressure and temperature) produced in the boilers. However, in case of shutdown of the turbine, the restart is time consuming and it shortens its service life and causes significant losses in startup from the shut down state to the required output power.
    The production of heat supplied to end users is ensured in most sources that produce heat and electricity through the burning of fuel and the production of steam in a boiler. Steam with high pressure and temperature parameters passes through a steam turbine when, after performing the work and production of electricity, it leaves the turbine and can be used to produce heat for end users in a heat exchanger. The level when steam from the turbine is extracted for heat production depends on the particular location and technological layout of the heating system. In principle, only part of the steam can be extracted, and the remainder can be continued, e.g. the condensing part (extraction turbine), or all the steam passing through the turbine can be extracted (back pressure turbine). Hot or hot water used as heat energy medium for the end user usually leaves the heat exchanger. The customers return the cooled water and heat it again with water in the heat exchanger to the outlet temperature and flow to the end users. During the production of electricity in the turbine, there is a certain minimum limit for its permanently durable output power, and this limit for minimum output power of the turbine is mostly increased by demands for heat supplies from the turbine outlet. In case there is a requirement to reduce the output power of the turbine for use in power control, this reduction may reach the level below the minimum output power of the turbine; however, one can only use the operating range of the turbine that results from its technical capability and which is also affected by the forced production of electricity as a result of heat supplies (forced increase of the production of the combined production state).
    The need for a higher regulatory area for the electricity grid has been increasing in recent years. One of the reasons is the increase in the installed output power of the wind turbines, whose operation depends on climatic conditions and the possibility of predicting their operation is minimal. As the above facts show, the disadvantage of existing electricity generation sources is that they are only insufficiently capable of changing the range of electrical power supplied to the grid while maintaining stable operation of the source and without that there is a need to destroy part of the electricity produced.
    The purpose of the present invention is to propose an energy system with an expanded range of electrical power.
    Brief description of the production
    The purpose of the generation is achieved by the electricity generated by an electricity source or an electricity and heat producing source can be supplied at the connection point to the electricity grid, where the control area of the source is limited by the maximum installed electrical 4 DK 2010 00069 U3 output at the peak and the minimum electrical output power of the source, whereby it is still possible to drive the source stable, at the bottom, the substance of the method being that before connecting the site to the electricity grid, an electrical device is connected to the source, which electrical device will reduce the electrical output power at the point of connection to the electricity grid below. the minimum electrical output power of the source, if necessary through its own consumption, thereby extending the range of the electrical output power that can be supplied to the electricity grid at the connection point, in comparison with the control area of the source alone.
    As an electrical appliance, an electric heater for heat conducting media can advantageously be installed.
    An electric water heater can advantageously be connected to the steam heat exchanger designed to heat steam water with steam, where it is required to reduce the electrical output power at the point of connection to the electricity grid to below the minimum electrical power output of the source, be heated in the electric water heater.
    In the electric water heater, at least a portion of returned, cooled water from the customer or customers can be heated before entering the steam exchanger. Another solution is that in the electric heater, at least a portion of water flowing to the customer or customers from the steam heat exchanger is further heated. Both of these options can also be combined.
    The purpose of the generation is provided by an energy system with an expanded electrical power control area, where electricity generated from an electricity source or an electricity and heat producing source can be supplied at the connection point to the electricity grid, where the source control area is limited by the maximum installed electrical output at 5K 2010 00069 U3 the peak and the minimum electrical output power of the source, whereby it is still possible to operate the source stably, at the bottom, where the substance of the energy system consists in comprising an electrical device connected to the source before the connection to the electricity grid.
    As an electrical appliance, an electric heater for heat conducting media can advantageously be used.
    According to another advantageous embodiment, an electric water heater that heats water, if necessary, to reduce the electrical output power at the point of connection to the electricity grid to below the minimum output power of the source, is connected to heat exchangers of the source designed to heat heating water. with steam.
    The electric water heater may be designed to heat at least a portion of the water returned from the heat consumer or heat consumers before entering the steam heat exchanger, or to additionally heat at least a portion of the water flowing from the heat exchanger to the heat consumer or the heat consumer, both of which can also be combined.
    Brief description of the drawing
    Below, some advantageous embodiments of the invention will be described, one of which will be described with reference to the accompanying FIG. 1, showing a diagram of one of the possible layouts of the electrical apparatus included in the energy system of the invention.
    Examples of embodiments of the production 6 DK 2010 00069 U3
    The electricity grid is often in a state where there is excess electricity and with a requirement to reduce the output power. The equivalent of non-produced electricity is the consumption of electricity or its destruction. The regulatory range for electricity sources or electricity and heat generating sources can be increased by incorporating an electrical appliance into this electrical system which, in addition to the source, also contains this electrical appliance. Electric power will not be destroyed, but it will be used to produce the required heat.
    The generation uses the combination of heat production with an increase in electricity consumption in heat sources to generate electricity or electricity and heat (hereinafter simply referred to as "source"), where the energy will not be destroyed but used efficiently.
    The increase in internal consumption can be provided e.g. by starting to electrically heat water or other heat-conducting media supplied to consumers or used for the internal needs of the source. In this way, part of the electricity will be consumed for the production of heat, and at the same time the turbine will be able to operate within a wider area because it will not fall below the minimum output power. With this solution, where the internal consumption is increased and the total output power of the energy system is thereby reduced to below the sustainable level from the turbine point, an electric water heater will be connected to the existing steam or hot water heat exchanger (hereinafter also simply "exchanger") which The layout and the special design of the water heater will depend on each source There are limiting factors such as the layout of the source, parameters of the heating media, special conditions for the local heating market, etc.
    If there is a need for a sudden reduction in the electrical output power from the energy system to below the turbine control area at a specific time (the control area is also derived from current heat supplies), then cooled water returned from the customers will be heated in a electric boiler or with a heating coil installed directly in the pipeline or other flow site before entering the heat exchanger. In addition, water flowing to customers can be heated in a similar way. The flow through the exchanger will be maintained, the steam consumption for heating water will be controlled in accordance with the additional heating for use for high quality heat supply to the end consumers. A diagram of one of the possible modes of connection is shown in FIG. First
    The electric boiler can be designed as a flow boiler with a large heating surface and will be connected to the source as part of the energy system. If the exchanger is only operated (without the need to increase the internal consumption of electricity), the electric boiler will be separated from the technology without any effect on the operation of the source. In order to eliminate the pressure loss of water as a result of it flowing through the electric boiler by use thereof, the output power of the heating water circulation pumps can be increased. To regulate flow through the electric boiler, a shut-off valve can be installed which will affect the flow through the electric boiler when setting the pressure ratio. The electric boiler can also be equipped with technology to protect the heating surface from operation without the refrigerants.
    The layout where not all the water returned from the customers but where only part of it will flow will work the same way. In that case, there will also be a system of closure devices to separate the newly installed equipment.
    The design of the electric boiler is one of many technically feasible ways to increase the internal consumption of electricity in order to influence the total output power of the energy system and thus the range of supporting services.
    DK 2010 00069 U3 8
    As shown above, the primary advantage and the primary characteristic of the method and energy system based on the present invention, in comparison with the prior art, is that with the proposed energy system (and with the proposed method) it becomes possible to reduce the electrical output power at the point of connection to the electricity grid compared to the electrical output power provided by the source alone, by increasing the consumption of electricity, using the electricity efficiently to provide heat supply. Compared to simple destruction of energy or total shutdown of the source, this solution also ensures, in addition to increasing the regulatory area, efficient use of energy in the fuel and the solution is more environmentally friendly.
    权利要求:
    Claims (5)
    [1]
    1. An energy system with an extended range of electrical power in which electricity produced by an electricity source or an electricity and heat producing source can be supplied at the connection point to the electricity grid, where the source area of the source is limited by the maximum installed electrical output at the peak and minimum electrical output power of the source, whereby it is still possible to drive the source stable, at the bottom, characterized in that it comprises an electrical device installed in connection with the source before the connection point to the electricity grid.
    [2]
    Energy system according to claim 1, characterized in that the electrical apparatus is an electric heater for heat conducting media.
    [3]
    Energy system according to claim 2, characterized in that in connection with the steam or hot water heat exchanger (1) of the source designed to heat water, an electric water heater (2) is installed to reduce the electrical output power at the connection point of the electricity grid to below the minimum electrical power output of the source if needed.
    [4]
    Energy system according to claim 3, characterized in that the electric water heater (2) is designed to heat at least a portion of the cooled water returned from the heat consumer (s) before entering the heat exchanger (1).
    [5]
    Energy system according to claim 3 or 4, characterized in that the electric water heater (2) is designed to further heat at least a portion of water flowing to the heat consumer or heat consumers from the heat exchanger (1). DK 2010 00069 U3 Electricity for heating water Steam for heating water

    Electric heating 2 Heat consumers Heated water
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    GB473324A|1936-03-28|1937-10-11|Hermann Honnef|Improvements in methods of storing and recovering the surplus electrical energy temporarily delivered by large wind-driven dynamos|
    JPS5818504A|1981-07-25|1983-02-03|Mitsui Eng & Shipbuild Co Ltd|Method of generating electricity by turbine while storing hot water|
    JPS6261276A|1985-09-12|1987-03-17|Inoue Japax Res Inc|Energy supply device|
    DE3623478A1|1986-07-11|1988-01-21|Siemens Ag|METHOD FOR REGULATING THE ENERGY RELATIONSHIP OF A MULTIPLE CONSUMER|
    US5751604A|1992-02-03|1998-05-12|Terasaki Denki Sangyo Kabushiki Kaisha|Cogeneration system|
    JPH10140880A|1996-11-15|1998-05-26|Ig Tech Res Inc|House|
    JPH1172028A|1997-08-29|1999-03-16|Mitsubishi Heavy Ind Ltd|Electric power leveling power generation method|
    JP2000002790A|1998-06-18|2000-01-07|Toshiba Corp|Nuclear power combinat|
    DE10003186A1|2000-01-25|2001-08-02|Bhkw Betreiber Gmbh|Method and device for generating electricity and heat|
    JP4003553B2|2002-06-26|2007-11-07|Ｊｆｅスチール株式会社|Power generation method and power generation facility using by-product gas|
    EP1834393B1|2005-01-07|2016-08-31|STEAG Power Saar GmbH|Method and device for supporting the alternating current frequency in an electricity network|CN111146819B|2019-12-26|2021-03-02|上海电力大学|Electric heating combined system auxiliary service scheduling method considering heat supply network characteristics|
    法律状态:
    2015-04-24| UBP| Utility model lapsed|Effective date: 20140924 |
    优先权:
    申请号 | 申请日 | 专利标题
    SK5117-2007A|SK288722B6|2007-10-04|2007-10-04|Method of extension control range of electric power supplied by electricity supply system and energy system with advanced control range|
    PCT/CZ2008/000114|WO2009043318A2|2007-10-04|2008-09-24|A method of extension of the regulation range of electric power supplied to the electricity grid and an energy system with an extended regulation range|
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