CN110906421A - Heating system based on new energy consumption - Google Patents
Heating system based on new energy consumption Download PDFInfo
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- CN110906421A CN110906421A CN201911262129.9A CN201911262129A CN110906421A CN 110906421 A CN110906421 A CN 110906421A CN 201911262129 A CN201911262129 A CN 201911262129A CN 110906421 A CN110906421 A CN 110906421A
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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
- F24D13/00—Electric heating systems
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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
- F24D19/1096—Arrangement or mounting of control or safety devices for electric heating systems
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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
- F24D2200/00—Heat sources or energy sources
- F24D2200/08—Electric heater
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Abstract
The invention discloses a heating system based on new energy consumption, which can improve the utilization rate of a power generation system of new energy equipment and meet the requirement of new energy consumption, and belongs to the technical field of new energy consumption and heating. The invention comprises a plurality of new energy power generation devices, a power grid and a power grid regulation and control center; dividing a heat supply user area into a plurality of blocks, wherein each block is provided with a centralized heat supply control device and a block heat supply distribution network; the plurality of new energy power generation equipment and the block centralized heating control device in each block are respectively connected with the power grid; the block centralized heating control device supplies power to the user electric heating devices in the heating users through the block heating distribution network in each block; a user temperature sampling terminal is arranged in part of heat supply users; and the power grid regulation and control center obtains consumption regulation and control parameters according to the real-time power generation data, the power grid load data and the temperature collected by each block, and performs power-on and power-off control on the heat supply and distribution network of the block through the block centralized heat supply control device according to the consumption regulation and control parameters.
Description
Technical Field
The invention relates to a heating system, in particular to a heating system based on new energy consumption, and belongs to the technical field of new energy consumption and heating.
Background
In many places, cold is a problem which always troubles people, although people can be warmed by an air conditioner, an electric heater, an electric heating small stove and the like, a large amount of electric energy is consumed, the electricity consumption cost is a problem which is extremely concerned by users, and therefore, central heating is the best solution.
At present, fossil fuel is generally combusted to supply power and heat, however, the price of electric energy generated in the way is relatively expensive relative to that of new energy, and the economic life burden of a user is increased; secondly, thermal power generation has the problems of serious environmental pollution, low efficiency and the like. The new energy is just opposite to the new energy, and firstly, the new energy has lower power generation cost, the corresponding electricity purchasing cost of users is reduced, and the heating cost of the users is reduced; secondly, the power generation efficiency of new energy is higher; thirdly, the new energy is renewable, energy is saved, and the environment is protected. Renewable energy has the advantages of low cost and low pollution, and a new energy source is imminent to replace coal.
At present, along with the expansion of the development scale of wind power in some areas, the contradiction between the wind power and the operation of a coal-fired cogeneration unit is increasingly prominent at night in winter, and the wind power is forced to reduce the output power and even stop the operation, so that a large amount of 'wind abandon' is caused; on one hand, precious clean energy is wasted, and on the other hand, a large amount of coal is used for heat supply to cause serious environmental pollution, so that the quality of the atmospheric environment is continuously deteriorated. In addition, other new energy sources such as photovoltaic power generation also have similar problems.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the heating system based on new energy consumption, which can improve the utilization rate of the power generation system of new energy equipment and can also meet the problem of new energy consumption.
The invention relates to a heating system based on new energy consumption, which comprises: the system comprises a plurality of new energy power generation equipment 1, a power grid 2 and a power grid regulation and control center 3;
meanwhile, dividing a heat supply user area into a plurality of blocks, wherein each block comprises a block central heat supply control device 4, a block heat supply distribution network 5, a user electric heating device 7 and a user temperature sampling terminal 8;
the plurality of new energy power generation equipment 1 and the block centralized heating control device 4 in each block are respectively connected with the power grid 2;
each heat supply user in the block is provided with a user electric heating device 7 for providing heat energy for the heat supply user;
the block centralized heating control device 4 is used for supplying power to a user electric heating device 7 in a heating user through a block heating distribution network 5 in each block;
sampling a plurality of heat supply users in each block, and setting a user temperature sampling terminal 8 in each sampled heat supply user for collecting the temperature of the sampled heat supply users and sending the collected temperature to the power grid regulation and control center 3;
and the power grid regulation and control center 3 is used for acquiring the fluctuation of new energy power generation and the load fluctuation of the power grid according to the real-time power generation data provided by the new energy power generation equipment 1 and the real-time load data in the power grid 2, mainly taking the consumption of new energy and taking the user heat supply effect as assistance, meeting different consumption requirements according to the temperature acquired by each block, calculating to obtain consumption regulation and control parameters, and carrying out power-on and power-off control on the heat supply power distribution network 5 of the block through the block centralized heat supply control device 4 according to the consumption regulation and control parameters.
Preferably, the power grid control center 3 is configured to calculate a maximum temperature value T of each block according to the temperature collected by each blockn_maxMinimum value of temperature Tn_minAnd temperature average value Tn_ave，TmaxIndicating a maximum temperature threshold, TminRepresents a minimum temperature threshold;
when T isn_min<TminWhen the power grid regulation and control center 3 controls the block centralized heating control device 4 of the nth block to electrify the block heating distribution network 5;
when T isn_max>TmaxWhen the power grid control center 3 controls the block centralized heating control device 4 of the nth block to cut off the power of the block heating distribution network 5;
when the new energy power generation equipment 1 generates surplus electric energy, the power grid regulation and control center 3 regulates and controls the average value T of the temperature of each blockn_aveSequentially powering on from small to large in priority order until the requirement of consumption is met;
when the new energy power generation equipment 1 generates insufficient electric energy, the power grid regulation and control center 3 regulates and controls the average value T of the temperature of each blockn_aveAnd sequentially powering off from large to small in priority order until the load balance requirement in the power grid 2 is met.
Preferably, the power grid control center 3 is further configured to prestore the load of each heat supply block, calculate the amount of surplus or shortage of electric energy, and advance the calculationWhen the power is on or off, the T of each heating block is ensuredn_min>TminAnd Tn_max<TmaxUnder the premise of optimally combining the simultaneous electrification or outage of part of the heat supply blocks according to the surplus or shortage of the electric energy and the load size of each heat supply block, and combining the temperature average value T obtained by collecting and calculating in a set timen_aveRecalculating and controlling to finally enable the temperature average value T of each blockn_aveAs close to equal as possible.
Preferably, the average temperature value T of each block is determinedn_aveSumming, dividing by the number of blocks to obtain the average temperature value of all blocks, and recording as TaveWhen the electric energy in the power grid 2 is surplus, the power grid regulation and control center 3 gradually raises T through alternating power-on modes of all the heat supply blocksave。
Preferably, an indoor manual switch 9 is connected in series between each user electric heating device and the block heating distribution network 5, and the indoor manual switch 9 is arranged in the heating user room.
Preferably, an outdoor forced switch 10 is connected in series between each electric heating device of the user and the block heating distribution network 5, and the outdoor forced switch 10 is arranged outside the heating user.
The invention has the following beneficial effects:
1. the method of electric heating central heating is adopted, the fluctuation condition of new energy power generation is combined with the load fluctuation of a power grid, the consumption of the new energy is taken as the main part, the heat supply effect of a user is taken as the auxiliary part, the work of the heat supply load is centrally controlled by using the redundant electric quantity, the problem of the consumption of the new energy is effectively solved, the heating effect is ensured, and the cost of electric heating is effectively reduced. The system has the advantages of simple structure, easy operation, low cost, strong practicability and the like.
2. The mode of dividing heat supply blocks and respectively carrying out level difference type heat supply regulation and control on each heat supply block is adopted, different consumption requirements are met, and peak-valley load fluctuation of the power grid is effectively stabilized.
3. And for the heat supply control of the heat supply block, a control strategy of convergence of low temperature, high priority and average temperature is adopted according to the average temperature of the sampling, so that the optimal heat supply effect is realized as far as possible while the new energy consumption requirement is met.
4. By utilizing the buffering effect of indoor heat preservation of a user and the large hysteresis effect of temperature reduction, redundant electric quantity of the new energy power generation system in different time periods is utilized as much as possible for heat supply, the utilization rate of the new energy power generation system is effectively improved, fossil fuel of traditional heat supply is saved, energy is saved, emission is reduced, the environment is protected, and the problem of consumption of new energy is solved.
Drawings
Fig. 1 is a schematic diagram of a heating system based on new energy consumption according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The invention is further described with reference to the following drawings and specific examples, which are not intended to be limiting.
As shown in fig. 1, the heating system based on new energy consumption in the present embodiment includes a plurality of new energy power generation devices 1, a power grid 2, and a power grid regulation center 3;
meanwhile, dividing a heat supply user area into a plurality of blocks, taking a residential district as an example, dividing each building in the district into one block, wherein each heat supply block is composed of a plurality of units, and each block comprises a block centralized heat supply control device 4, a block heat supply distribution network 5, a user electric heating device 7 and a user temperature sampling terminal 8; the mode that this embodiment adopted the partition heat supply block is favorable to realizing the regulation and control of differential heat supply.
The new energy power generation equipment 1 and the district centralized heating control device 4 in each district are respectively connected with the power grid 2, and the new energy power generation equipment 1 and the power grid 2 of the embodiment provide electric energy for the district centralized heating control device 4;
each heat supply user in the block is provided with a user electric heating device 7 for providing heat energy for the heat supply user;
the block centralized heating control device 4 is used for supplying power to a user electric heating device 7 in a heating user through a block heating distribution network 5 in each block;
sampling a plurality of heat supply users in each block, setting a user temperature sampling terminal 8 in each sampled heat supply user for collecting the temperature of the sampled heat supply user and sending the collected temperature to the power grid regulation and control center 3, preparing for calculating a new energy scheduling and consumption regulation and control strategy of the power grid regulation and control center 2 by taking the typical temperature as reference data, and setting the user temperature sampling terminal (8) by considering different typical positions of residents in each building to ensure that the user temperature sampling terminal is representative;
and the power grid regulation and control center 3 is used for acquiring the fluctuation of new energy power generation and the load fluctuation of the power grid according to the real-time power generation data provided by the new energy power generation equipment 1 and the real-time load data in the power grid 2, mainly taking the consumption of new energy and taking the user heat supply effect as assistance, meeting different consumption requirements according to the temperature acquired by each block, calculating to obtain consumption regulation and control parameters, and carrying out power-on and power-off control on the heat supply power distribution network 5 of the block through the block centralized heat supply control device 4 according to the consumption regulation and control parameters. The embodiment adopts an electric heating central heating method, the power grid regulation and control center 3 of the embodiment combines the load fluctuation of the power grid according to the fluctuation condition of new energy power generation, mainly takes the consumption of new energy and assists the user heat supply effect, utilizes the modes of dividing heat supply blocks and respectively carrying out level difference type heat supply regulation and control on each heat supply block to meet different consumption requirements, effectively stabilizes the peak-valley load fluctuation of the power grid, adopts a control strategy of convergence of low temperature high priority and average temperature, utilizes the redundant electric quantity of a new energy power generation system at different time intervals to supply heat, effectively improves the utilization rate of the new energy power generation system, further solves the problem of the consumption of the new energy, simultaneously ensures the heating heat supply effect and effectively reduces the cost of electric heat supply. The system has the advantages of simple structure, easy operation, low cost, strong practicability and the like.
The power grid regulation and control center 3 controls the heat supply of the heat supply block, and the optimal heat supply effect is realized as far as possible while the new energy consumption requirement is met according to the average temperature sampled by the user temperature sampling terminal 8. In a preferred embodiment, the power grid control center 3 is configured to calculate a maximum temperature value T of each block according to the temperature collected by each blockn_maxMinimum value of temperature Tn_minAnd temperature average value Tn_ave，TmaxIndicating a maximum temperature threshold, TminRepresents a minimum temperature threshold; if can be set with Tmax＝28℃，TminAnd when the temperature is 18 ℃, the electrical energy capacity which can be absorbed can be determined according to the heat supply area of each block and the set temperature interval. The heat supply control of the heat supply block adopts a control strategy of convergence of low temperature, high priority and average temperature according to the average temperature of sampling, meets the consumption requirement of new energy and simultaneously realizes the best heat supply effect as far as possible, and specifically comprises the following steps:
when T isn_min<TminWhen the temperature of the heat supply of the block is too low, the power grid regulation and control center 3 controls the block centralized heat supply control device 4 of the nth block to electrify the block heat supply distribution network 5;
when T isn_max>TmaxWhen the temperature of the heat supply of the block is over high, the power grid regulation and control center 3 controls the block centralized heat supply control device 4 of the nth block to cut off the power of the block heat supply distribution network 5;
when the new energy power generation equipment 1 generates surplus electric energy and needs to be consumed, the power grid regulation and control center 3 regulates and controls the temperature average value T of each blockn_aveSequentially powering on from small to large in priority order until the requirement of consumption is met; and a control strategy of convergence of low temperature, high priority and average temperature is adopted, so that the optimal heat supply effect is realized as far as possible while the new energy consumption requirement is met.
When the new energy power generation equipment 1 generates insufficient electric energy, the power grid (2) is overloadedThen, the power grid control center 3 adjusts the temperature average value T according to each blockn_aveAnd sequentially powering off from large to small in priority order until the load balance requirement in the power grid 2 is met.
The embodiment calculates the grade difference type heat supply regulation and control mode of each heat supply block to obtain the consumption regulation and control parameters, reasonably distributes the electric energy, meets different consumption requirements, effectively stabilizes the peak-valley load fluctuation of the power grid, and consumes the electric energy generated by the new energy to the maximum extent.
In the preferred embodiment, the power grid control center 3 is further configured to prestore the load of each heat supply block, calculate the surplus or shortage of electric energy, and ensure T of each heat supply block when performing power-on or power-off operationn_min>TminAnd Tn_max<TmaxUnder the premise of optimally combining the simultaneous electrification or outage of part of the heat supply blocks according to the surplus or shortage of the electric energy and the load size of each heat supply block, and combining the temperature average value T obtained by collecting and calculating in a set timen_aveRecalculating and controlling to finally enable the temperature average value T of each blockn_aveAs close to equal as possible. Namely, the heat supply effect of each block tends to be average.
In the preferred embodiment, the temperature average T of each block is determinedn_aveSumming, dividing by the number of blocks to obtain the average temperature value of all blocks, and recording as TaveWhen the electric energy in the power grid 2 is surplus, the power grid regulation and control center 3 gradually raises T through alternating power-on modes of all the heat supply blocksaveOf course, Tmax cannot be exceeded at the highest, i.e., Tave cannot exceed 28 ℃ at the highest. Therefore, when new energy is excessive, the heat energy is stored by using the buffering effect of indoor heat preservation of the user and the large hysteresis effect of temperature reduction, and when the future electric energy is insufficient, the indoor temperature of the heat supply user 6 is not allowed to drop to T quicklyn_min>TminAnd the situation that the electric energy shortage is increased due to forced power supply of the power grid is avoided in order to guarantee the heat supply effect. Namely, the redundant electric quantity of the new energy power generation system in different time periods is utilized as much as possible to supply heat, so thatThe utilization rate of a new energy power generation system is effectively improved, the traditional heat supply fossil fuel is saved, the energy is saved, the emission is reduced, the environment is protected, and the problem of new energy consumption is solved.
In the preferred embodiment, an indoor manual switch 9 is connected in series between each user electric heating device and the block heating distribution network 5, and the indoor manual switch 9 is arranged in the heating user room. When the indoor temperature is too high, the heating user (6) can manually turn off the heating, so that the energy waste is reduced.
In the preferred embodiment, an outdoor forced switch 10 is connected in series between each consumer electric heating device and the block heating distribution network 5, said outdoor forced switch 10 being arranged outside the heating consumers. The heat supply users 6 cannot operate the outdoor forced switch 10, and the power grid is used for manually or remotely forcibly powering off when the heat supply users 6 do not exchange heat, so that the unified management of the heat supply users 6 by the power grid is facilitated. By utilizing the buffering effect of indoor heat preservation of a user and the large hysteresis effect of temperature reduction, redundant electric quantity of the new energy power generation system in different time periods is utilized as much as possible for heat supply, the utilization rate of the new energy power generation system is effectively improved, fossil fuel of traditional heat supply is saved, energy is saved, emission is reduced, the environment is protected, and the problem of consumption of new energy is solved.
Although the invention herein has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present invention. It is therefore to be understood that numerous modifications may be made to the illustrative embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that features described in different dependent claims and herein may be combined in ways different from those described in the original claims. It is also to be understood that features described in connection with individual embodiments may be used in other described embodiments.
Claims (6)
1. A heating system based on new energy consumption, characterized in that the system comprises: the system comprises a plurality of new energy power generation devices (1), a power grid (2) and a power grid regulation and control center (3);
meanwhile, a heat supply user area is divided into a plurality of blocks, and each block comprises a block central heat supply control device (4), a block heat supply distribution network (5), a user electric heating device (7) and a user temperature sampling terminal (8);
the plurality of new energy power generation equipment (1) and the block centralized heating control device (4) in each block are respectively connected with the power grid (2);
each heat supply user in the block is provided with a user electric heating device (7) for providing heat energy for the heat supply user;
the block centralized heating control device (4) is used for supplying power to a user electric heating device (7) in a heating user through a block heating distribution network (5) in each block;
sampling a plurality of heat supply users in each block, and setting a user temperature sampling terminal (8) in each sampled heat supply user for collecting the temperature of the sampled heat supply users and sending the collected temperature to a power grid regulation and control center (3);
and the power grid regulation and control center (3) is used for acquiring fluctuation of new energy power generation and load fluctuation of a power grid according to real-time power generation data provided by the new energy power generation equipment (1) and real-time load data in the power grid (2), mainly resolving new energy and assisting user heat supply effects, meeting different resolving requirements according to the temperature acquired by each block, calculating resolving regulation and control parameters, and performing power-on and power-off control on the block heat supply power distribution network (5) through the block centralized heat supply control device (4) according to the resolving regulation and control parameters.
2. A heating system based on new energy consumption according to claim 1, characterised by a grid regulation and control centre (3) for calculating the maximum temperature T of each block according to the temperatures collected by each blockn_maxMinimum value of temperature Tn_minAnd temperature average value Tn_ave，TmaxIndicating a maximum temperature threshold, TminRepresents a minimum temperature threshold;
when T isn_min<TminIn time, the power grid regulation and control center (3) controls the block centralized heat supply control device (4) of the nth block to supply heat to the blockThe power distribution network (5) is electrified;
when T isn_max>TmaxWhen the power grid control center (3) controls the block centralized heat supply control device (4) of the nth block to cut off the power of the block heat supply distribution network (5);
when the new energy power generation equipment (1) generates surplus electric energy, the power grid regulation and control center (3) regulates and controls the temperature average value T of each blockn_aveSequentially powering on from small to large in priority order until the requirement of consumption is met;
when the new energy power generation equipment (1) generates insufficient electric energy, the power grid regulation and control center (3) regulates and controls the temperature average value T of each blockn_aveAnd sequentially powering off from large to small in the priority order until the load balance requirement in the power grid (2) is met.
3. A heating system based on new energy consumption according to claim 2, characterized in that the grid regulation and control center (3) is further configured to pre-store the load size of each heating block and calculate the amount of excess or deficiency of electric energy, and when performing power-on or power-off operation, ensure T of each heating blockn_min>TminAnd Tn_max<TmaxUnder the premise of optimally combining the simultaneous electrification or outage of part of the heat supply blocks according to the surplus or shortage of the electric energy and the load size of each heat supply block, and combining the temperature average value T obtained by collecting and calculating in a set timen_aveRecalculating and controlling to finally enable the temperature average value T of each blockn_aveAs close to equal as possible.
4. A heating system based on new energy consumption according to claim 2 or 3, characterised in that the temperature average T of each block is takenn_aveSumming, dividing by the number of blocks to obtain the average temperature value of all blocks, and recording as TaveWhen the electric energy in the power grid (2) is surplus, the power grid regulation and control center (3) gradually raises T through alternating power-on modes of all the heat supply blocksave。
5. Heating system based on new energy consumption according to claim 4, characterized in that between each consumer electric heating device and the block heating distribution network (5) there is connected in series an indoor manual switch (9), said indoor manual switch (9) being placed inside the heating consumer room.
6. Heating system based on new energy consumption according to claim 4, characterized in that between each consumer electric heating device and the block heating distribution network (5) there is connected in series an outdoor force switch (10), said outdoor force switch (10) being placed outside the heating consumers.
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| CN108131722A (en) * | 2017-12-15 | 2018-06-08 | 西南大学 | A kind of terminal user's refrigeration behavior towards peak load regulation network adaptively regulates and controls |
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