CN107992695B - Integrated energy display system based on interactive touch table - Google Patents
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Abstract
The invention discloses an interactive touch table-based comprehensive energy display system, which is constructed from four dimensions of a geographic model, an environment model, an equipment element model and a comprehensive energy system model, and defines interactive rules among the models. The method comprises the following steps that a geographical model presets an adjustable resource coefficient coupled with distributed power generation; the environment model presets coefficients of various power supplies and loads influenced by environment and time; the equipment component model defines the attributes of the energy equipment model from two aspects of basic attributes and operation rules; the comprehensive energy system model combines a power grid, an oil-gas network, a cold-hot network and an energy control center together and defines a comprehensive energy system; the interaction rules include rules for balancing power among the models. The invention adopts an object-oriented program design method to form a scene construction mode which is flexible to open and convenient to expand, and can effectively improve the modeling efficiency of the comprehensive energy display system aiming at different scenes.
Description
Technical Field
The invention relates to an interactive touch table-based comprehensive energy display system, and belongs to the technical field of multimedia display.
Background
With the development of multimedia technology in display systems, more and more display means appear, people not only pay attention to display contents, but also put forward higher requirements on interactivity and interestingness of the display systems. The interactive touch table is more and more widely applied, the comprehensive energy system model based on the interactive touch table has more components and complex logic relations, coupling relations of multiple energy sources exist among the components, and generally, the comprehensive energy display system model constructed in a customized mode is long in development period, high in energy consumption and high in logic error rate.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides an interactive touch table-based comprehensive energy display system, and an object-oriented program design method is adopted to form a scene construction mode which is open, flexible and convenient to expand.
In order to solve the technical problems, the invention provides an interactive touch table-based comprehensive energy display system, which comprises a geographic model, an environment model, an equipment element model and a comprehensive energy system model;
the geographic model is preset with a plurality of adjustable resource coefficients coupled with distributed power generation through a program;
the environment model is an adjustable environment coefficient preset by a program;
the equipment element model comprises a source model, a load model, an energy storage model and a control model;
the source model is used for abstracting the characteristics of various power generation systems and presetting the basic attributes and the operation rules of various models in a program;
the load model refers to the characteristics of the abstract energy-using equipment, and model basic attributes and operation rules are preset in a program;
the energy storage model refers to the characteristics of abstract energy storage equipment, and model basic attributes and operation rules are preset in a program;
the control model refers to the characteristics of an abstract micro-grid router, and basic attributes and operation rules of the model are preset in a program;
the comprehensive energy system model combines a power grid, an oil-gas network, a cooling-heating network and an energy control center together, defines the comprehensive energy system as a comprehensive energy system, abstractly expresses the transportation, collection and management of regional comprehensive energy, calculates various statistical indexes of the comprehensive energy system through programs, and presets energy balance calculation rules;
the statistical indexes comprise: the method comprises the following steps of (1) carrying out statistics on fossil energy consumption total, carbon emission total, clean energy ratio, electric energy consumption ratio, total installed capacity, system standby statistics and system load statistics; the calculation result of the statistical index is displayed through an interactive touch table;
the energy balance calculation starts a calculation engine by adopting an event triggering mode, wherein the event type comprises model setting, adjusting operation and resource and time adjusting operation; the triggering conditions are as follows: when a source, a network and a load exist in the system at the same time, triggering the energy balance calculation of the system;
the energy balance calculation comprises energy balance calculation in a single microgrid, energy balance calculation after electric energy exchange is carried out on a plurality of microgrids, and microgrid energy balance exists when combined cooling, heating and power supply is available.
The aforementioned adjustable resource coefficients include:
the wind resource coefficient is used for simulating the geographical landform and wind power development planning of different areas;
the illumination resource coefficients are used for simulating the development plans of geographic landforms, photovoltaics and optothermal in different areas;
the geothermal resource coefficients are used for simulating the geographical landforms and heat pump development plans of different areas;
the biomass power generation resource coefficient is used for simulating power generation resources of agriculture and forestry waste and household garbage in different areas.
The aforementioned environmental coefficients include:
the 24-hour coefficient is a coefficient of the power of photovoltaic power generation, photo-thermal power generation, wind power generation, biomass power generation, direct current load, alternating current load, resident load and energy storage model changing along with 24 hours in one day, and is used for simulating power curves of various types of power generation and load changing along with time;
the four-season variation coefficient is a coefficient coupling the illumination intensity and the wind intensity in spring, summer, autumn and winter seasons, and is used for simulating environmental resources in different seasons.
The aforementioned source model includes a wind field model, a photovoltaic power station model, a photo-thermal power generation model, a biomass power generation model, a triple power generation unit model, and a large power grid model, and is constructed as follows:
the system automatically calculates the wind field generated output at the current moment and displays the wind field generated output through the interactive touch table by inputting the installed capacity of the wind field model, and the wind field generated output is calculated as follows: pw＝K1×Pwmax，PwmaxInstalled capacity for wind farms, PwThe K1 is the wind resource coefficient;
the photovoltaic power station model inputs the installed capacity of the photovoltaic power station, the system automatically calculates the photovoltaic output at the current moment and displays the photovoltaic output through the interactive touch table, and the photovoltaic output is calculated as follows: ps＝K2×Psmax，PsmaxFor installed capacity of photovoltaic power station, PsFor photovoltaic output, K2 is the illumination resource coefficient;
the solar-thermal power generation model inputs the solar-thermal power generation installed capacity, the system automatically calculates the solar-thermal power generation output at the current moment, and the solar-thermal power generation output is displayed through the interactive touch table and calculated as follows: pt＝K2×Ptmax，PtmaxInstalled capacity for photothermal power, PtFor the light-heat power generation output, K2 is the illumination resource coefficient;
the biomass power generation model inputs the installed capacity of biomass power generation, the system automatically calculates the biomass power generation output at the current moment and displays the biomass power generation output through the interactive touch table, and the biomass power generation output is calculated as follows: pb＝K3×Pbmax，PbmaxInstalled capacity for biomass power generation, PbGenerating output for biomass, and K3 is a biomass power generation coefficient;
the triple co-generation generator set model inputs the installed capacity of the triple co-generation, and the system automatically outputs the generated output and the heat supply output of the triple co-generation generator set at the current moment and displays the generated output and the heat supply output through the interactive touch table;
the large power grid model can supply infinite electric energy or consume infinite electric energy;
when the photovoltaic power station model, the photo-thermal power generation model, the biomass power generation model and the triple supply generator set model are applied to the interactive touch table, the photovoltaic power station model, the photo-thermal power generation model, the biomass power generation model and the triple supply generator set model are placed in a regional power grid, and the placing quantity is not limited; then, a function of setting a rotating entity model to adjust the installed capacity is supported, the adjusting range is 0-3 times of the installed capacity, the clockwise rotating capacity is increased, and the anticlockwise rotating capacity is reduced; the regional power grid refers to a power grid coverage region in an actual modeling scene on the interactive touch table;
when the interactive touch table is applied, the large power grid model is placed outside the regional power grid, and only one large power grid model can be placed.
The load model is that a load demand value is input, the system automatically calculates a current load value, and the current load value is displayed through an interactive touch table, and the current load is a preset load multiplied by a 24-hour coefficient;
the load model is also provided with a load rotary type continuous adjusting function, and the preset adjusting range is as follows: (0-200%) x initialized size; the preset clockwise rotation load is increased and the counterclockwise rotation load is decreased.
The energy storage model comprises a conventional energy storage device model and a heat storage device model, and is constructed as follows:
a. conventional energy storage
Basic properties: presetting the capacity, charging power and discharging power of a conventional energy storage device;
and (4) operating rules: charging or discharging according to the following formula, and displaying the charging or discharging state on the interactive touch table,
conventional energy storage device discharge state:
sigma power supply + energy storage sigma load
Conventional energy storage device state of charge:
sigma power source + energy storage < Sigmaload
When the energy storage device is applied to an interactive touch table, the conventional energy storage devices are placed into a regional power grid, and the number of the conventional energy storage devices is unlimited;
b. heat storage device
Basic properties: presetting the capacity, heat storage power and heat release power of a heat storage device;
and (4) operating rules: heat storage and heat release calculation is carried out according to the 24-hour coefficient, heat storage and heat release power is displayed on the interactive touch table, and the calculation formula is as follows: the current power is a capacity multiplied by 24 hour coefficient, a positive value represents heat release power, and a negative value represents heat storage power;
when the heat storage device is applied to the interactive touch table, the arrangement position and the number of the heat storage devices are not limited.
The control model is constructed as follows:
basic properties: setting a micro-grid router model to have four ports connected with other models;
and (4) operating rules: and selecting a micro-grid router model port, and presetting adjustable port transmission power.
The foregoing energy balance calculation within a single piconet includes the steps of:
1-1) firstly judging whether a source, a network and a load exist in the established system at the same time, if so, triggering a balance calculation logic, and then switching to the step 1-2); if not, not calculating;
1-2) judging whether the total power supply power in the system meets the total load requirement, and if the total power supply power in the system meets the total load requirement, turning to the step 1-3); if the total power supply power in the system can not meet the total load requirement, turning to the step 1-4); the total power supply power refers to the total installed capacity of the placed source model, and the total load refers to the load size of the placed load model;
1-3) making the total power supply power be the total load demand, distributing the total power supply power according to the proportion of the maximum power generation value of each power supply, then calculating the actual standby power generation power of the system to be the maximum power generation value of the total power supply-the total load demand, and finishing the calculation;
1-4) calculating the actual power shortage of the system as the maximum power generation value of the total power supply-total load demand, then making the total load demand as the maximum power generation value of the total power supply, distributing the electric quantity of the load according to the steps, and finishing the calculation;
and for a single microgrid in the system, the calculation module is directly called, the system automatically calculates the current power and system statistical indexes of each element, displays the current power and system statistical indexes through the interactive touch table, and simultaneously displays the operation form of the energy network in the area.
The energy balance calculation after the electric energy exchange is performed on the multiple micro-grids comprises the following steps:
2-1) firstly, calculating the shortage power and the deliverable power in a single micro-network, wherein the shortage power is the smaller value of the actual shortage power and the line transmission limit, and the deliverable power is the smaller value of the actual standby power and the line transmission limit;
2-2) when the standby power microgrid and the deficient power microgrid exist in the system at the same time, the standby power microgrid transmits electric energy to the deficient power microgrid;
2-3) determining the exchange power among the micro-grids, firstly determining the total exchange power of the system, taking the smaller value of the total available outgoing power and the total shortage power of the system, and distributing the smaller value to each micro-grid according to the proportion of the shortage or the spare capacity;
2-4) balancing the electric energy of the micro-grid after power exchange, taking the transmitted power as a virtual load and the received power as a virtual power supply, and carrying out balance calculation on the single micro-grid again;
when a plurality of micro-grid areas exist in the system, the current values of the power supply and the load and the exchange power of the plurality of micro-sub-networks can be output in the system by directly calling the computing module, and the current values and the exchange power are displayed through the interactive touch table.
The microgrid energy balance calculation in the presence of combined cooling heating and power supply comprises the following steps:
3-1) firstly calculating the shortage power and the deliverable power in a single micro-network, wherein the shortage power is the smaller value of the actual shortage power and the line transmission limit, and the deliverable power is the smaller value of the actual standby power and the line transmission limit;
3-2) the total load demand takes the smaller value of the actual load demand and the transmission capacity of the line; the triple co-generation output value is the smaller value of the self installed capacity and the total load demand;
3-3) judging whether the triple co-generation can meet the total shortage power of the system, if so, turning to the step 3-4), and if not, turning to the step 3-5);
3-4) preferentially meeting the shortage power, and distributing the residual power to each microgrid according to the residual load requirement;
3-5) let Δ P be total power shortage-triple output value, define a be Min (sum)Can send valueDelta P), allocating a as the output power of each microgrid according to the proportion of the transmittable power, and allocating (a + triple supply output value) as the input power of each microgrid according to the proportion of the deficit power, sumCan send valueRefers to the sum of the available power in all the piconets in the system.
The invention achieves the following beneficial effects:
the invention adopts an object-oriented program design method to form a scene construction mode which is flexible to open and convenient to expand, and can effectively improve the modeling efficiency of the comprehensive energy display system aiming at different scenes.
Drawings
FIG. 1 is a diagram of an interactive table-based integrated energy display system according to the present invention;
fig. 2 is a flow of electric energy balance calculation in a single microgrid;
FIG. 3 is a flow chart of a balance calculation among a plurality of micro-nets;
fig. 4 shows a process of calculating the balance of the existing combined cooling heating and power.
Detailed Description
The invention is further described below. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
According to the interactive touch table-based comprehensive energy display system disclosed by the invention, as shown in fig. 1, the comprehensive energy display system is constructed from four dimensions of a geographic model, an environment model, an equipment element model and a comprehensive energy system model, and an interaction rule of model construction is defined.
Specifically, the geographic model is preset by a program with a plurality of adjustable resource coefficients coupled with distributed power generation.
The resource coefficient adjustment comprises the following four steps:
1) coefficient of wind resources
The wind resource coefficient can be adjusted to quickly simulate the geographical landform and wind power development planning of different areas.
2) Illumination resource coefficient
The illumination resource coefficient can be adjusted, and the geographical landform, photovoltaic and photothermal development planning of different areas can be simulated rapidly.
3) Coefficient of geothermal resources
The geothermal resource coefficient can be adjusted to quickly simulate the geographical landform and the heat pump development planning of different areas.
4) Biomass power generation resource coefficient
The biomass power generation resource coefficient can be adjusted, and agriculture and forestry waste and household garbage power generation resources in different areas can be simulated rapidly.
The environment model is an environment coefficient which is preset and adjustable through a program:
1) coefficient of 24 hours
The model program comprises coefficients of model power changing with 24 hours, such as photovoltaic power generation, photo-thermal power generation, wind power generation, biomass power generation, direct current load, alternating current load, resident load, energy storage and the like in one day, and can simulate power curves of various types of power generation and load changing with time.
2) Coefficient of variation in four seasons
The model program comprises coefficients of coupling of the illumination intensity and the wind intensity in four seasons of spring, summer, autumn and winter, and can simulate environmental resources in different seasons.
The equipment element models are mainly divided into four types, namely source models, load models, energy storage models and control models.
1) The source model is used for abstracting the characteristics of various power generation systems and presetting the basic properties and the operation rules of various models in a program. The method specifically comprises the following source models:
the wind field model is constructed as follows:
basic properties: installed capacity: pwmaxAnd power generation output: pw。
And (4) operating rules: inputting the installed capacity of a wind field, automatically calculating the wind field generated output at the current moment by the system, and displaying the wind field generated output through an interactive touch table, wherein the wind field generated output and the wind speed are in a linear relation and meet the following requirements: pw＝K1×PwmaxK1 is a wind resource systemAnd (4) counting.
When the wind field model is applied to the interactive touch table, the wind field model is placed into a regional power grid, and the placing quantity is not limited. The regional power grid of the invention refers to a power grid coverage area in a real modeling scene on an interactive touch table. And then, a rotating entity model can be set to adjust the installed capacity, the adjusting range is 0-3 times of the installed capacity, the clockwise rotating capacity is increased, and the anticlockwise rotating capacity is reduced.
Photovoltaic power station model
Basic properties: installed capacity: psmax(ii) a Generating output force: ps。
And (4) operating rules: and inputting the installed capacity of the photovoltaic power station, automatically calculating the photovoltaic output at the current moment by the system, and displaying the photovoltaic output through the interactive touch table. The photovoltaic output and the light intensity are in a linear relation, and the formula is as follows: ps＝K2×PsmaxAnd K2 is the illumination resource coefficient.
When the photovoltaic power station model is applied to the interactive touch table, the photovoltaic power station model is placed into the regional power grid, and the placing quantity is not limited. And then, a rotating entity model can be set to adjust the installed capacity, the adjusting range is 0-3 times of the installed capacity, the clockwise rotating capacity is increased, and the anticlockwise rotating capacity is reduced.
Photo-thermal power generation model
Basic properties: installed capacity Ptmax(ii) a Power generation output Pt。
And (4) operating rules: inputting the installed capacity of the photo-thermal power generation, automatically calculating the photo-thermal power generation output at the current moment by the system, and displaying the photo-thermal power generation output through the interactive touch table. The output of the photo-thermal power generation and the light intensity are in a linear relation, and the formula is as follows: pt＝K2×PtmaxAnd K2 is the illumination resource coefficient.
When the solar photovoltaic power generation system is applied to an interactive touch table, the solar photovoltaic power generation models are placed into a regional power grid, and the placing quantity is not limited. And then, a rotating entity model can be set to adjust the installed capacity, the adjusting range is 0-3 times of the installed capacity, the clockwise rotating capacity is increased, and the anticlockwise rotating capacity is reduced.
Biomass power generation model
Basic properties: installed capacity Pbmax(ii) a Power generation output Pb；
And (4) operating rules: and inputting the installed capacity of biomass power generation, automatically calculating the biomass power generation output of the system at the current moment, and displaying the biomass power generation output through an interactive touch table. Formula Pb＝K3×PbmaxAnd K3 is a biomass power generation coefficient.
When the biomass power generation model is applied to the interactive touch table, the biomass power generation model is placed into a regional power grid, and the number of the biomass power generation models is not limited. And then, a rotating entity model can be set to adjust the installed capacity, the adjusting range is 0-3 times of the installed capacity, the clockwise rotating capacity is increased, and the anticlockwise rotating capacity is reduced.
Triple co-generation generator set model
Basic properties: installed capacity Pcmax(ii) a Generating output force: pc(ii) a Heat supply output Pthermal；
And (4) operating rules: and inputting the installed capacity of the triple co-generation unit, and automatically outputting the generated output and the heat supply output of the triple co-generation unit at the current moment by the system, and displaying the generated output and the heat supply output through an interactive touch table.
When the three-generation power generation unit model is applied to the interactive touch table, the three-generation power generation unit model is placed into a regional power grid, and the placing quantity is unlimited. And then, a rotating entity model can be set to adjust the installed capacity, the adjusting range is 0-3 times of the installed capacity, the clockwise rotating capacity is increased, and the anticlockwise rotating capacity is reduced.
Large power grid model
Basic properties: the current power P;
and (4) operating rules: the large power grid can supply infinite electric energy or consume infinite electric energy.
When the interactive touch table is applied, the large power grid model is placed outside the regional power grid, and only one large power grid model can be placed.
2) The load model refers to the characteristics of the abstract energy-using equipment and presets basic properties and operation rules of the model in a program.
The load model was constructed as follows:
basic properties: ld for load demandEVTo indicate.
And (4) operating rules: and inputting a load demand value, automatically calculating the current load value by the system, and displaying the current load value through an interactive touch table, wherein the current load is a preset load multiplied by a 24-hour coefficient. The load model has a load rotary type continuous adjusting function, and the preset adjusting range is as follows: (0-200%) x initialized size; the preset clockwise rotation load is increased and the counterclockwise rotation load is decreased.
3) The energy storage model refers to abstract characteristics of energy storage equipment, and basic properties and operation rules of the model are preset in a program. For example, a conventional energy storage and heat storage device model is constructed as follows:
a. conventional energy storage
Basic properties: presetting the capacity, charging power and discharging power of a conventional energy storage device;
and (4) operating rules: and (4) calculating according to typical energy storage charging and discharging logics, discharging in the peak period of power utilization of the power grid, and charging in the valley period of power utilization.
Conventional energy storage device-discharge state:
sigma power supply + energy storage sigma load
Conventional energy storage device-state of charge:
sigma power source + energy storage < Sigmaload
The power supply refers to the sum of installed capacities of all power supplies in the system at the current moment, the energy storage refers to the sum of installed capacities of all energy storage at the current moment, and the load refers to the sum of requirements of all loads at the current moment, and the sum is a known quantity.
When the energy storage device is applied to the interactive touch table, the conventional energy storage devices are placed in a regional power grid, and the number of the conventional energy storage devices is not limited.
b. Heat storage device
Basic properties: presetting the capacity, heat storage power and heat release power of a heat storage device;
and (4) operating rules: heat storage and heat release calculations were performed based on the 24 hour factor. Calculating the formula: the current power is the capacity x 24 hour coefficient, positive values represent heat release power, and negative values represent heat storage power.
When the heat storage device is applied to the interactive touch table, the arrangement position and the number of the heat storage devices are not limited.
4) The control model refers to abstract characteristics of the microgrid router, and basic attributes and operation rules of the model are preset in a program.
Basic properties: the micro-grid router model consists of a bidirectional four-port power electronic transformer and an operation control system thereof. Aiming at the connected 3 alternating current-direct current micro-grids with different voltage levels, the micro-grid router actively controls the flow and allocation of electric power so as to solve the problems of flexible access, active control and efficient management of distributed energy resources in the micro-grid. Therefore, the micro-grid router model is provided with four ports connected with other models and has the function of adjusting multi-port micro-grid power.
And (4) operating rules: and selecting a micro-grid router model port, and presetting adjustable port transmission power.
And the comprehensive energy system model calculates various statistical indexes of the comprehensive energy system through a program and presets an energy balance calculation rule.
1) Comprehensive energy system network model
The power grid, the oil-gas network, the cold-hot network and the energy control center are combined together to define a comprehensive energy system, and the abstract representation is the transportation, collection and management of regional comprehensive energy.
2) Statistics and analysis
a. Ecological and energy consumption analysis
Total fossil energy consumption:
E＝Q×KE-F
wherein,
e: consumption of fossil energy (kg)
Q: consuming total electricity (kWh)
KE-F: correlation coefficient is 288g/kWh
Total carbon emission:
T＝E×KF-C
wherein,
t: total carbon emission (kg)
E: consumption of fossil energy (kg)
KF-C: correlation coefficient 266g/kg
Clean energy ratio:
N1＝∑Pcleaning of÷∑PPower generation
Wherein,
N1: ratio of clean energy
∑PCleaning of: sum of generated power of clean energy
∑PPower generation: sum of all generated power in region
Wherein, Sigma PCleaning ofSum sigma PPower generationThe value of (A) is calculated according to the parameters of the model placed on the desktop at the current moment.
Electric energy consumption ratio:
N2＝∑Pelectrical load÷∑PTotal energy
N2: electric energy consumption ratio
∑PElectrical load: total load of electric energy
∑PTotal energy: total load of comprehensive energy
Wherein, Sigma PElectrical loadSum sigma PTotal energyAccording to the current moment, the model parameters placed on the desktop are calculated
b. Supply and demand analysis
And (3) total installed capacity statistics: Σ (installed capacity of the currently placed power generation system model).
System standby statistics (narrow meaning power supply reliability): (the upper limit of the transmission capacity of the large power grid-the current transmission power) + Sigma (the installed capacity of the currently placed power generation element) -Sigma (the size of the currently placed electric energy load).
And (3) system load statistics: Σ (current placed power load size).
The statistical analysis is a programmed module, and in the actual use, the part is a well-packaged balance algorithm, the capacity value of each model is directly input, the calculation result is automatically output, and the calculation result is displayed through an interactive touch table.
3) Regional integrated energy supply and demand balance rule
a. And a trigger calculation mode: the method comprises the steps that a computing engine is started in an event triggering mode, the event types comprise model setting, adjusting operation, resource and time adjusting and other operation types, the model setting refers to a source model, a load model, an energy storage model and a control model, the resource adjusting refers to adjusting four resource adjusting coefficients, and the time adjusting refers to adjusting two time coefficients in an environment model.
b. Balance calculation conditions: when the system has source, network and load at the same time, the energy balance calculation of the system is triggered.
c. The calculation method comprises the following steps:
firstly, calculating the electric energy balance in a single microgrid, and when a plurality of microgrids exist, calculating the electric energy balance after the plurality of microgrids exchange electric energy; and finally, calculating the electric energy balance of the micro-grid when combined cooling heating and power supply exists in the heating season and the cooling season.
The calculation of the power balance in a single microgrid is shown in fig. 2 and comprises the following steps:
1-1) firstly judging whether a source, a network and a load exist in the established system at the same time, if so, triggering a balance calculation logic, and then switching to the step 1-2); if not, not calculating;
1-2) judging whether the total power supply power in the system meets the total load requirement, and if the total power supply power in the system meets the total load requirement, turning to the step 1-3); if the total power supply power in the system can not meet the total load requirement, turning to the step 1-4); the total power supply power refers to the total installed capacity of the placed source model, and the total load refers to the load size of the placed load model;
1-3) making the total power supply power be the total load demand, distributing the total power supply power according to the proportion of the maximum power generation value of each power supply, then calculating the actual standby power generation power of the system to be the maximum power generation value of the total power supply-the total load demand, and finishing the calculation; each power supply refers to all the placed source models except the large power grid.
1-4) calculating the actual power shortage of the system as the maximum power generation value of the total power supply-total load demand, then making the total load demand as the maximum power generation value of the total power supply, distributing the electric quantity of the load according to the steps, and finishing the calculation. The step here means that a load priority is set in advance, for example, a residential load, a medical load, a commercial load, and an air conditioning load are satisfied in order.
The calculation module is directly called for a single microgrid in the system, the system automatically calculates the current power and system statistical indexes of each element, and the current power and system statistical indexes are displayed through an interactive touch table, so that the real-time balance of power supply and demand is guaranteed, and the operation form of an energy network in an area can also be displayed.
As shown in fig. 3, the calculation of the balance of electric energy after the electric energy exchange is performed on the multiple micro-grids includes the following steps:
2-1) first calculate the power deficit and the deliverable power within a single piconet. The shortage power takes the smaller value of the actual shortage power and the transmission limit of the line, and the sending power can take the smaller value of the actual standby power and the transmission limit of the line;
2-2) when the standby power microgrid and the deficient power microgrid exist in the system at the same time, the standby power microgrid transmits electric energy to the deficient power microgrid;
2-3) determining the exchange power among the micro-grids, firstly determining the total exchange power of the system, taking the smaller value of the total available outgoing power and the total shortage power of the system, and distributing the smaller value to each micro-grid according to the proportion of the shortage or the spare capacity; if there are multiple microgrid starved, the starvation ratio refers to the ratio of their power starvation. If there are multiple microgrids with backup power generation, the backup capacity ratio refers to the ratio of their backup capacities.
And 2-4) balancing the electric energy of the micro-grid after power exchange, taking the transmitted power as a virtual load and the received power as a virtual power supply, and performing balance calculation on the single micro-grid again.
When a plurality of micro-grid areas exist in the system, the current values of the power supply and the load and the exchange power of the plurality of micro-sub-networks can be output in the system by directly calling the computing module, the current values and the exchange power are displayed through the interactive touch table, and the real-time balance of power supply and demand is ensured.
The microgrid electric energy balance calculation in the cold-heat-electricity triple supply process is shown in fig. 4, and comprises the following steps:
3-1) first calculate the power deficit and the deliverable power within a single piconet. The shortage power takes the smaller value of the actual shortage power and the transmission limit of the line, and the sending power can take the smaller value of the actual standby power and the transmission limit of the line;
3-2) the total load demand takes the smaller value of the actual load demand and the transmission capacity of the line; the triple co-generation output value is the smaller value of the self installed capacity and the total load demand;
3-3) judging whether the triple co-generation can meet the total shortage power of the system, if so, turning to the step 3-4), and if not, turning to the step 3-5);
3-4) preferentially meeting the shortage power, and distributing the residual power to each microgrid according to the residual load requirement;
3-5) let Δ P be total power shortage-triple output value, define a be Min (sum)Can send valueAnd delta P), allocating a to serve as the output power of each microgrid according to the transmittable power proportion, and allocating (a + triple supply output value) to serve as the input power of each microgrid according to the shortage power proportion. The deliverable power is the minimum value of both the spare capacity and the line transmission capacity in a single micro-network. sumCan send valueRefers to the sum of the available power in all the piconets in the system. The transmittable power ratio refers to the ratio of transmittable power of the standby capacity microgrid when a plurality of microgrids exist; the power shortage ratio is a ratio of power shortage between the power shortage micro grids when there are multiple micro grids.
When the combined cooling heating and power supply is placed in the system, the microgrid electric energy balance calculation module during the combined cooling heating and power supply is called, the current values of all power supplies and loads can be calculated, the current values are displayed through the interactive touch table, and the real-time balance of power supply and demand is ensured.
The invention edits each model in a programming mode, places the models in an area power grid constructed by the interactive touch table, sets the power supply, the load installed capacity and the quantity, automatically calculates the current power of each element and the system statistical index by the system, displays the current power and the system statistical index through the interactive touch table, ensures the real-time balance of power supply and demand, and can also display the operation form of an energy grid in the area.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (9)
1. An interactive touch table-based comprehensive energy display system is characterized by comprising a geographic model, an environment model, an equipment element model and a comprehensive energy system model;
the geographic model is preset with a plurality of adjustable resource coefficients coupled with distributed power generation through a program;
the environment model is an adjustable environment coefficient preset by a program;
the equipment element model comprises four types, namely a source model, a load model, an energy storage model and a control model;
the source model is used for abstracting the characteristics of various power generation systems and presetting the basic attributes and the operation rules of various models in a program;
the source model comprises a wind field model, a photovoltaic power station model, a photo-thermal power generation model, a biomass power generation model, a triple generation power generation unit model and a large power grid model, and is constructed as follows:
the system comprises a wind field model, a touch table and a control system, wherein the wind field model inputs the installed capacity of a wind field, and the system automatically calculates the generated power of the wind field at the current moment and displays the generated power through the interactive touch table;
the photovoltaic power station model inputs the installed capacity of the photovoltaic power station, and the system automatically calculates the photovoltaic output at the current moment and displays the photovoltaic output through the interactive touch table;
the system comprises a photo-thermal power generation model, a photo-thermal power generation installed capacity input module, a photo-thermal power generation output module and an interactive touch table, wherein the photo-thermal power generation installed capacity is input, and the photo-thermal power generation output at the current moment is automatically calculated by the system and displayed through the interactive touch table;
the biomass power generation model inputs the installed capacity of biomass power generation, and the system automatically calculates the biomass power generation output at the current moment and displays the biomass power generation output through the interactive touch table;
the triple co-generation generator set model inputs the installed capacity of the triple co-generation, and the system automatically outputs the generated output and the heat supply output of the triple co-generation generator set at the current moment and displays the generated output and the heat supply output through the interactive touch table;
the large power grid model can supply infinite electric energy or consume infinite electric energy;
when the photovoltaic power station model, the photo-thermal power generation model, the biomass power generation model and the triple supply generator set model are applied to the interactive touch table, the photovoltaic power station model, the photo-thermal power generation model, the biomass power generation model and the triple supply generator set model are placed in a regional power grid, and the placing quantity is not limited; then, a function of setting a rotating entity model to adjust the installed capacity is supported, the adjusting range is 0-3 times of the installed capacity, the clockwise rotating capacity is increased, and the anticlockwise rotating capacity is reduced; the regional power grid refers to a power grid coverage region in an actual modeling scene on the interactive touch table;
when the large power grid model is applied to the interactive touch table, the large power grid model is placed outside the regional power grid, and only one large power grid model can be placed;
the load model refers to the characteristics of the abstract energy-using equipment, and model basic attributes and operation rules are preset in a program;
the load model is that a load demand value is input, the system automatically calculates the current load value and displays the current load value through an interactive touch table;
the energy storage model refers to the characteristics of abstract energy storage equipment, and model basic attributes and operation rules are preset in a program;
the energy storage model comprises a conventional energy storage device model and a heat storage device model, and is constructed as follows:
a. conventional energy storage
Basic properties: presetting the capacity, charging power and discharging power of a conventional energy storage device;
and (4) operating rules: charging or discharging, and displaying the charging or discharging state on the interactive touch table,
when the energy storage device is applied to an interactive touch table, the conventional energy storage devices are placed into a regional power grid, and the number of the conventional energy storage devices is unlimited;
b. heat storage device
Basic properties: presetting the capacity, heat storage power and heat release power of a heat storage device;
and (4) operating rules: heat storage and release calculations are performed according to the 24 hour coefficient, and heat storage and release power is displayed on the interactive touch table,
when the heat storage device is applied to an interactive touch table, the arrangement position and the number of the heat storage devices are not limited;
the control model refers to the characteristics of an abstract micro-grid router, and basic attributes and operation rules of the model are preset in a program;
the control model is constructed as follows:
basic properties: setting a micro-grid router model to have four ports connected with other models;
and (4) operating rules: selecting a micro-grid router model port, and presetting adjustable port transmission power;
the comprehensive energy system model combines a power grid, an oil-gas network, a cooling-heating network and an energy control center together, defines the comprehensive energy system as a comprehensive energy system, abstractly expresses the transportation, collection and management of regional comprehensive energy, calculates various statistical indexes of the comprehensive energy system through programs, and presets energy balance calculation rules;
the statistical indexes comprise: the method comprises the following steps of (1) carrying out statistics on fossil energy consumption total, carbon emission total, clean energy ratio, electric energy consumption ratio, total installed capacity, system standby statistics and system load statistics; the calculation result of the statistical index is displayed through an interactive touch table;
the energy balance calculation starts a calculation engine by adopting an event triggering mode, wherein the event type comprises model setting, adjusting operation and resource and time adjusting operation; the triggering conditions are as follows: when a source, a network and a load exist in the system at the same time, triggering the energy balance calculation of the system;
the energy balance calculation comprises energy balance calculation in a single microgrid, energy balance calculation after electric energy exchange is carried out on a plurality of microgrids, and microgrid energy balance exists when combined cooling, heating and power supply is available.
2. The interactive touch table-based integrated energy display system of claim 1, wherein the adjustable resource factors comprise:
the wind resource coefficient is used for simulating the geographical landform and wind power development planning of different areas;
the illumination resource coefficients are used for simulating the development plans of geographic landforms, photovoltaics and optothermal in different areas;
the geothermal resource coefficients are used for simulating the geographical landforms and heat pump development plans of different areas;
the biomass power generation resource coefficient is used for simulating power generation resources of agriculture and forestry waste and household garbage in different areas.
3. The interactive touch table-based integrated energy display system of claim 1, wherein the environmental factors comprise:
the 24-hour coefficient is a coefficient of the power of photovoltaic power generation, photo-thermal power generation, wind power generation, biomass power generation, direct current load, alternating current load, resident load and energy storage model changing along with 24 hours in one day, and is used for simulating power curves of various types of power generation and load changing along with time;
the four-season variation coefficient is a coefficient coupling the illumination intensity and the wind intensity in spring, summer, autumn and winter seasons, and is used for simulating environmental resources in different seasons.
4. The integrated energy display system based on interactive touch table as claimed in claim 1,
the wind field generated output is calculated as follows: pw＝K1×Pwmax，PwmaxInstalled capacity for wind farms, PwThe K1 is the wind resource coefficient;
the photovoltaic output was calculated as follows: ps＝K2×Psmax，PsmaxFor installed capacity of photovoltaic power station, PsFor photovoltaic output, K2 is the illumination resource coefficient;
the photothermal power generation output is calculated as follows: pt＝K2×Ptmax，PtmaxInstalled capacity for photothermal power, PtFor the light-heat power generation output, K2 is the illumination resource coefficient;
the biomass power generation output is calculated as follows: pb＝K3×Pbmax，PbmaxInstalled capacity for biomass power generation, PbGenerating output for biomass, and K3 is a biomass power generation coefficient;
the triple co-generation generator set model inputs the installed capacity of the triple co-generation, and the system automatically outputs the generated output and the heat supply output of the triple co-generation generator set at the current moment and displays the generated output and the heat supply output through the interactive touch table.
5. The integrated energy display system based on interactive touch table as claimed in claim 1,
in the load model, the current load value is a preset load multiplied by a 24-hour coefficient;
the load model is also provided with a load rotary type continuous adjusting function, and the preset adjusting range is as follows: (0-200%) x initialized size; the preset clockwise rotation load is increased and the counterclockwise rotation load is decreased.
6. The integrated energy display system based on interactive touch table as claimed in claim 1,
conventional energy storage device discharge state calculation:
sigma power supply + energy storage sigma load
Conventional energy storage device state of charge calculation:
sigma power source + energy storage < Sigmaload
Heat storage and release calculation formula: the current power is the capacity x 24 hour coefficient, positive values represent heat release power, and negative values represent heat storage power.
7. The interactive touch table-based integrated energy display system according to claim 1, wherein the energy balance calculation in the single micro-net comprises the following steps:
1-1) firstly judging whether a source, a network and a load exist in the established system at the same time, if so, triggering a balance calculation logic, and then switching to the step 1-2); if not, not calculating;
1-2) judging whether the total power supply power in the system meets the total load requirement, and if the total power supply power in the system meets the total load requirement, turning to the step 1-3); if the total power supply power in the system can not meet the total load requirement, turning to the step 1-4); the total power supply power refers to the total installed capacity of the placed source model, and the total load refers to the load size of the placed load model;
1-3) making the total power supply power be the total load demand, distributing the total power supply power according to the proportion of the maximum power generation value of each power supply, then calculating the actual standby power generation power of the system to be the maximum power generation value of the total power supply-the total load demand, and finishing the calculation;
1-4) calculating the actual power shortage of the system as the maximum power generation value of the total power supply-total load demand, then making the total load demand as the maximum power generation value of the total power supply, distributing the electric quantity of the load according to the steps, and finishing the calculation;
and for a single microgrid in the system, the calculation module is directly called, the system automatically calculates the current power and system statistical indexes of each element, displays the current power and system statistical indexes through the interactive touch table, and simultaneously displays the operation form of the energy network in the area.
8. The integrated energy display system based on the interactive touch table as claimed in claim 1, wherein the energy balance calculation after the electric energy exchange is performed on the multiple micro-grids comprises the following steps:
2-1) firstly, calculating the shortage power and the deliverable power in a single micro-network, wherein the shortage power is the smaller value of the actual shortage power and the line transmission limit, and the deliverable power is the smaller value of the actual standby power and the line transmission limit;
2-2) when the standby power microgrid and the deficient power microgrid exist in the system at the same time, the standby power microgrid transmits electric energy to the deficient power microgrid;
2-3) determining the exchange power among the micro-grids, firstly determining the total exchange power of the system, taking the smaller value of the total available outgoing power and the total shortage power of the system, and distributing the smaller value to each micro-grid according to the proportion of the shortage or the spare capacity;
2-4) balancing the electric energy of the micro-grid after power exchange, taking the transmitted power as a virtual load and the received power as a virtual power supply, and carrying out balance calculation on the single micro-grid again;
when a plurality of micro-grid areas exist in the system, the current values of the power supply and the load and the exchange power of the plurality of micro-sub-networks can be output in the system by directly calling the computing module, and the current values and the exchange power are displayed through the interactive touch table.
9. The integrated energy display system based on the interactive touch table as claimed in claim 1, wherein the microgrid energy balance calculation in the presence of combined cooling heating and power supply comprises the following steps:
3-1) firstly calculating the shortage power and the deliverable power in a single micro-network, wherein the shortage power is the smaller value of the actual shortage power and the line transmission limit, and the deliverable power is the smaller value of the actual standby power and the line transmission limit;
3-2) the total load demand takes the smaller value of the actual load demand and the line transmission capacity; the triple co-generation output value is the smaller value of the self installed capacity and the total load demand;
3-3) judging whether the triple co-generation can meet the total shortage power of the system, if so, turning to the step 3-4), and if not, turning to the step 3-5);
3-4) preferentially meeting the shortage power, and distributing the residual power to each microgrid according to the residual load requirement;
3-5) let Δ P be total power shortage-triple output value, define a be Min (sum)Can send valueDelta P), allocating a to be used as the output power of each microgrid according to the transmittable power proportion, and allocating a + triple co-generation output value to be used as the received power of each microgrid, sum, according to the shortage power proportionCan send valueRefers to the sum of the available power in all the piconets in the system.
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