CN110416992B - Comprehensive energy optimization energy utilization method suitable for direct current power utilization users - Google Patents
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- 238000005457 optimization Methods 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000010248 power generation Methods 0.000 claims abstract description 43
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 40
- 238000004146 energy storage Methods 0.000 claims abstract description 17
- 239000013589 supplement Substances 0.000 claims abstract description 16
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 14
- 238000005286 illumination Methods 0.000 claims abstract description 13
- 238000009826 distribution Methods 0.000 claims abstract description 9
- 238000004891 communication Methods 0.000 claims abstract description 5
- 239000007789 gas Substances 0.000 claims description 67
- 230000005611 electricity Effects 0.000 claims description 52
- 230000005540 biological transmission Effects 0.000 claims description 12
- 238000004378 air conditioning Methods 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 10
- 238000007599 discharging Methods 0.000 claims description 6
- 238000005057 refrigeration Methods 0.000 claims description 6
- NAWXUBYGYWOOIX-SFHVURJKSA-N (2s)-2-[[4-[2-(2,4-diaminoquinazolin-6-yl)ethyl]benzoyl]amino]-4-methylidenepentanedioic acid Chemical compound C1=CC2=NC(N)=NC(N)=C2C=C1CCC1=CC=C(C(=O)N[C@@H](CC(=C)C(O)=O)C(O)=O)C=C1 NAWXUBYGYWOOIX-SFHVURJKSA-N 0.000 claims description 3
- 238000004364 calculation method Methods 0.000 claims description 3
- 239000002737 fuel gas Substances 0.000 claims description 3
- 230000001502 supplementing effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L55/00—Arrangements for supplying energy stored within a vehicle to a power network, i.e. vehicle-to-grid [V2G] arrangements
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J1/00—Circuit arrangements for dc mains or dc distribution networks
- H02J1/10—Parallel operation of dc sources
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J1/00—Circuit arrangements for dc mains or dc distribution networks
- H02J1/14—Balancing the load in a network
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
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- Air Conditioning Control Device (AREA)
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Abstract
The invention relates to a comprehensive energy optimization energy utilization method suitable for direct current power utilization users, which is characterized in that the direct current power supply, the direct current power utilization and the comprehensive energy utilization are scientifically and reasonably coordinated and optimized. The direct-current power distribution network supplies power to a direct-current power system through a direct-current-direct-current bidirectional converter, and the gas power generation system and the photovoltaic power generation system supply power to the direct-current power system; the energy storage system and the electric automobile are used for adjusting the energy balance of the system; the gas power generation system directly provides gas for gas load at the same time, the winter air supplement system is linked with the refrigerator to introduce cold air to reduce the power of the refrigerator, the air energy hot water system is linked with the air conditioner to reduce the power of the air energy hot water system and the air conditioner, and the light guide pipe daylight illumination system provides daytime illumination for the indoor; finally, the comprehensive energy optimization energy utilization management unit performs optimization management on each unit through a communication channel, so that the comprehensive energy can be efficiently utilized, and the input cost of direct-current power utilization users is reduced. The method has the advantages of scientific and reasonable method, strong applicability, good application effect and the like.
Description
Technical Field
The invention relates to the field of direct current distribution and utilization systems and comprehensive energy, in particular to a comprehensive energy optimization energy utilization method suitable for direct current power utilization users.
Background
For the majority of current alternating current users, the household appliances convert the power frequency alternating current into the low-voltage direct current which can be used by the household appliances through the voltage reduction rectifying devices which are respectively equipped to work, so that the manufacturing cost of the electric appliance equipment is increased, and the more the electric appliance equipment used by the users, the higher the corresponding purchase cost is; due to technical and cost limitations, manufacturers cannot increase the efficiency of the rectifying and voltage-reducing device of the household appliance, which increases the electricity consumption cost of the alternating current electricity user and reduces the energy utilization rate.
With the development of new energy, new materials, and power electronic technologies, the dc power distribution technology is also researched and developed, and compared with the ac power distribution technology, the dc power distribution technology has the advantages of low loss, high reliability, and excellent distributed power access capability, and more dc power users will emerge.
On the other hand, the popularization and development of the comprehensive energy sources enable electricity consumers not to be limited to purchasing electricity from a power grid or a power supply company, the use of the comprehensive energy sources such as solar energy, wind energy and gas is gradually popularized to the electricity consumers, and the electricity consumers are difficult to flexibly, efficiently and optimally manage the comprehensive energy sources and the electricity supply and utilization units.
So far, no literature report and practical application of a comprehensive energy optimization energy utilization method applicable to direct current power utilization users are found.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a scientific and reasonable comprehensive energy optimization energy utilization method suitable for direct current power utilization users, which has strong applicability and good application effect, aiming at the problems in the prior art and the requirements of the direct current power utilization users.
The technical scheme for solving the technical problem is as follows: a comprehensive energy optimization energy utilization method suitable for direct current power users is characterized by comprising the following steps:
1) to systems or apparatus for supplying electric energy
Firstly, a direct-current power distribution network is connected with a direct-current-direct-current bidirectional converter through a direct-current conducting circuit to supply power to a direct-current power utilization system;
the photovoltaic power generation system utilizes the photovoltaic cell to generate power to supply power to the direct current power utilization system;
the gas power generation system supplies power to the direct current system by using gas power generation based on the cost difference of gas and electricity purchase, and simultaneously directly provides gas for gas load;
the energy storage system is used for balancing energy balance among photovoltaic power generation, gas power generation, electric vehicles and various electrical loads and supplying power to the direct-current power utilization system according to needs;
the electric automobile supplies power to the direct current power utilization system according to the needs: charging during the off-peak electricity price period and releasing electric energy during the peak electricity period to facilitate peak regulation of the system;
2) electric loads involved
Including air conditioners, refrigerators, lighting loads and other dc electrical loads;
3) gas load involved
Load of working with gas;
4) related air energy hot water system
The air energy water heating system is linked with the air conditioner so as to improve the working efficiency and reduce the total power consumption of the air energy water heating system and the air conditioner;
firstly, an air energy hot water system provides hot air for an air conditioner so as to reduce the electricity consumption of the air conditioner when the air conditioner heats;
the air energy hot water system receives hot air provided by an air conditioner external unit when the air conditioner refrigerates so as to reduce the power consumption of the air energy hot water system;
5) related winter air supplement system
According to the temperature difference between the outdoor and the refrigerator, the winter air supplement system provides all or part of refrigeration for the refrigerator;
6) related light pipe daylight illumination system
The light pipe daylight illumination system provides daytime illumination for the indoor space by introducing outdoor sunlight in the daytime;
7) related DC-DC bidirectional converter
Realizing direct current electric energy bidirectional transmission regulation and control according to electric energy transmission needs;
8) related DC conductive circuit
A direct current power transmission line;
9) related communication channels
The system is suitable for information transmission channels between each system and equipment in the comprehensive energy optimization energy utilization of the direct-current power utilization users and the comprehensive energy optimization energy utilization management unit;
10) related gas conveying pipeline
The device is used for conveying fuel gas;
11) related air conveying pipeline
For the transport of air;
12) related light guide channel
For conducting sunlight;
13) the related comprehensive energy optimization energy utilization management unit
(ii) optimization of the target
min(Fall),Fall＝Fbuy+Fbattery+FEV+Fair.heater+Fad+Ffridge+Fwind+Fgas (1)
In equation (1): "min" is the minimum calculation function, FallIs the total electricity cost, FbuyIs the cost of electricity purchase and utilization, FbatteryIs the cost of use of the energy storage system, FEVIs the use cost of the battery of the electric automobile, Fair.heaterIs the use cost of the air energy hot water system, FadIs the cost of air conditioning use, FfridgeIs the cost of use of the refrigerator, FwindIs the use cost of the wind supplementing system in winter FgasIs the use cost of the gas power generation system;
in equation (2), ". Sigma" is the sign of the summation operation, Pbuy(t) is total electric power consumption for purchasing electricity, Cbuy(T) is the unit price of electricity purchased, T is the unit time period, T is the total time (T e [1,10000 ]])；
In formula (3), Pbattery(t) is the energy storage system charge and discharge power and defines discharge as a positive value, charge as a negative value, Cdep-batteryThe cost is converted by charging and discharging of the energy storage system unit;
in the formula (4), PEV(t) is the electric vehicle charge and discharge power and defines charge as positive and discharge as negative, CEV(t) is the cost of charging and discharging the electric vehicle per unit;
in the formula (5), Pair.heater(t) electric power for air energy water heating system, Cair.heater(t) is the unit electricity cost of the air energy hot water system;
in the formula (6), Pad(t) is electric power for air conditioning, Cad(t) is the electricity cost of the air conditioning unit;
in the formula (7), Pfridge(t) is the electric power for the refrigerator, Cfridge(t) is the cost of electricity consumption by the refrigerator unit;
in the formula (8), Pwind(t) is the power consumption of the winter air supply system, Cwind(t) the unit electricity consumption cost of the winter air supply system;
in formula (9), Pgas(t) is the gas power, Cdep-gas(t) is the gas unit power depreciation cost;
constraint conditions
The working power of the direct current-direct current bidirectional converter does not exceed the capacity limit value, the capacity charging and power generation of the energy storage system do not exceed the capacity limit value, the working power of the gas power generation system does not exceed the capacity limit value, the working power of the photovoltaic power generation system does not exceed the capacity limit value, the working power of the electric vehicle does not exceed the capacity limit value, the working power of the lighting load does not exceed the capacity limit value, the working power of the air energy hot water system does not exceed the capacity limit value, the working power of the air conditioner does not exceed the capacity limit value, the working power of the refrigerator does not exceed the capacity limit value, the working power of the air supplement system in winter does not exceed the capacity limit value, the working power of the gas load does not exceed the capacity limit value, and the working power of other direct current loads do not exceed the capacity limit value;
Pgenerate＝PL (10)
in the formula (10), PgenerateTotal power of electricity generation and purchase, PLIs the total power consumption of the load;
Pgengrate＝Pbuy+Pbattery+Pgas-L+Psolar-L (11)
in formula (11), Pgas-LIs the power generated by the gas power generation system, Psolar-LIs the power generated by the photovoltaic power generation system;
PL＝PEV+Plight+Pair.heater+Pad+Pfridge+Pwind+Pother.load (12)
in the formula (12), PlightIs lightingElectric power for load, Pother.loadIs the electric power used by other direct current electric loads.
The invention relates to a comprehensive energy optimization energy utilization method suitable for direct current power utilization users. The direct-current power distribution network supplies power to a direct-current power system through a direct-current-direct-current bidirectional converter, and the gas power generation system and the photovoltaic power generation system supply power to the direct-current power system; the energy storage system and the electric automobile are used for adjusting the energy balance of the system; the gas power generation system directly provides gas for gas load at the same time, the winter air supplement system is linked with the refrigerator to introduce cold air to reduce the power of the refrigerator, the air energy hot water system is linked with the air conditioner to reduce the power of the air energy hot water system and the air conditioner, and the light guide pipe daylight illumination system provides daytime illumination for the indoor; finally, the comprehensive energy optimization energy utilization management unit performs optimization management on each unit through a communication channel, so that the comprehensive energy can be efficiently utilized, and the input cost of direct-current power utilization users is reduced. The method has the advantages of scientific and reasonable method, strong applicability, good application effect and the like.
Drawings
Fig. 1 is a block diagram of an energy optimization method for comprehensive energy resources suitable for direct current users according to the present invention;
FIG. 2 is a schematic view of an annual power curve of the winter air supplement system and the refrigerator;
FIG. 3 is a schematic view of an annual power consumption cost curve before and after use of the gas power generation system;
FIG. 4 is a schematic diagram of an annual power consumption cost curve before and after peak and valley adjustment of an electric vehicle;
FIG. 5 is a schematic diagram of a daily power curve of relevant equipment during air conditioning refrigeration;
fig. 6 is a schematic diagram of a daily power curve of relevant equipment during heating of an air conditioner.
Detailed Description
The invention is further illustrated by the following figures and examples.
Referring to fig. 1, the comprehensive energy optimization energy utilization method applicable to the direct current electricity user of the present invention includes the following steps:
1) to systems or apparatus for supplying electric energy
Firstly, a direct-current power distribution network is connected with a direct-current-direct-current bidirectional converter through a direct-current conducting circuit to supply power to a direct-current power utilization system;
the photovoltaic power generation system utilizes the photovoltaic cell to generate power to supply power to the direct current power utilization system;
the gas power generation system supplies power to the direct current system by using gas power generation based on the cost difference of gas and electricity purchase, and simultaneously directly provides gas for gas load;
the energy storage system is used for balancing energy balance among photovoltaic power generation, gas power generation, electric vehicles and various electrical loads and supplying power to the direct-current power utilization system according to needs;
the electric automobile supplies power to the direct current power utilization system according to the needs: charging during the off-peak electricity price period and releasing electric energy during the peak electricity period to facilitate peak regulation of the system;
4) electric loads involved
Including air conditioners, refrigerators, lighting loads and other dc electrical loads;
5) gas load involved
Load of working with gas;
4) related air energy hot water system
The air energy water heating system is linked with the air conditioner, so that the working efficiency is improved, and the total power consumption of the air energy water heating system and the air conditioner is reduced;
firstly, an air energy hot water system provides hot air for an air conditioner so as to reduce the electricity consumption of the air conditioner when the air conditioner heats;
the air energy hot water system receives hot air provided by an air conditioner external unit when the air conditioner refrigerates so as to reduce the power consumption of the air energy hot water system;
5) related winter air supplement system
According to the temperature difference between the outdoor and the refrigerator, the winter air supplement system provides all or part of refrigeration for the refrigerator;
6) related light pipe daylight illumination system
The light pipe daylight illumination system provides daytime illumination for the indoor space by introducing outdoor sunlight in the daytime;
7) related DC-DC bidirectional converter
Realizing direct current electric energy bidirectional transmission regulation and control according to electric energy transmission needs;
10) related DC conductive circuit
A direct current power transmission line;
11) related communication channels
The system is suitable for information transmission channels between each system and equipment in the comprehensive energy optimization energy utilization of the direct-current power utilization users and the comprehensive energy optimization energy utilization management unit;
10) related gas conveying pipeline
The device is used for conveying fuel gas;
13) related air conveying pipeline
For the transport of air;
14) related light guide channel
For conducting sunlight;
13) the related comprehensive energy optimization energy utilization management unit
(ii) optimization of the target
min(Fall),Fall＝Fbuy+Fbattery+FEV+Fair.heater+Fad+Ffridge+Fwind+Fgas (1)
In equation (1): "min" is the minimum calculation function, FallIs the total electricity cost, FbuyIs the cost of electricity purchase and utilization, FbatteryIs the cost of use of the energy storage system, FEVIs the use cost of the battery of the electric automobile, Fair.heaterIs the use cost of the air energy hot water system, FadIs the cost of air conditioning use, FfridgeIs the cost of use of the refrigerator, FwindIs the use cost of the wind supplementing system in winter FgasIs the use cost of the gas power generation system;
in equation (2), ". Sigma" is the sign of the summation operation, Pbuy(t) is total electricity consumption for purchasing electricityElectric quantity, Cbuy(T) is the unit price of electricity purchased, T is the unit time period, T is the total time (T e [1,10000 ]])；
In formula (3), Pbattery(t) is the energy storage system charge and discharge power and defines discharge as a positive value, charge as a negative value, Cdep-batteryThe cost is converted by charging and discharging of the energy storage system unit;
in the formula (4), PEV(t) is the electric vehicle charge and discharge power and defines charge as positive and discharge as negative, CEV(t) is the cost of charging and discharging the electric vehicle per unit;
in the formula (5), Pair.heater(t) electric power for air energy water heating system, Cair.heater(t) is the unit electricity cost of the air energy hot water system;
in the formula (6), Pad(t) is electric power for air conditioning, Cad(t) is the electricity cost of the air conditioning unit;
in the formula (7), Pfridge(t) is the electric power for the refrigerator, Cfridge(t) is the cost of electricity consumption by the refrigerator unit;
in the formula (8), Pwind(t) is the power consumption of the winter air supply system, Cwind(t) the unit electricity consumption cost of the winter air supply system;
in formula (9), Pgas(t) is the gas power, Cdep-gas(t) is the gas unit power depreciation cost;
constraint conditions
The working power of the direct current-direct current bidirectional converter does not exceed the capacity limit value, the capacity charging and power generation of the energy storage system do not exceed the capacity limit value, the working power of the gas power generation system does not exceed the capacity limit value, the working power of the photovoltaic power generation system does not exceed the capacity limit value, the working power of the electric vehicle does not exceed the capacity limit value, the working power of the lighting load does not exceed the capacity limit value, the working power of the air energy hot water system does not exceed the capacity limit value, the working power of the air conditioner does not exceed the capacity limit value, the working power of the refrigerator does not exceed the capacity limit value, the working power of the air supplement system in winter does not exceed the capacity limit value, the working power of the gas load does not exceed the capacity limit value, and the working power of other direct current loads do not exceed the capacity limit value;
Pgenerate＝PL (10)
in the formula (10), PgenerateTotal power of electricity generation and purchase, PLIs the total power consumption of the load;
Pgengrate＝Pbuy+Pbattery+Pgas-L+Psolar-L (11)
in formula (11), Pgas-LIs the power generated by the gas power generation system, Psolar-LIs the power generated by the photovoltaic power generation system;
PL＝PEV+Plight+Pair.heater+Pad+Pfridge+Pwind+Pother.load (12)
in the formula (12), PlightIs the electrical power for the lighting load, Pother.loadIs the electric power used by other direct current electric loads.
Referring to fig. 2, by using the comprehensive energy optimization energy utilization method applicable to the direct current power users of the present invention, when the wind supplement system and the refrigerator are not linked in winter, the power of the wind supplement system is lower in summer and winter than in other seasons, the power in winter is the highest, and the power of the refrigerator is higher in summer; after the winter air supplement system is linked with the refrigerator, the winter air supplement system extracts outdoor cold air to provide all or part of refrigeration for the refrigerator according to the temperature difference between the outdoor air and the refrigerator, so that the power of the refrigerator in winter is reduced.
Referring to fig. 3, by using the comprehensive energy optimization energy utilization method applicable to the direct current power utilization users, the gas power generation system supplies power to the direct current power utilization system by using gas power generation based on the cost difference of gas and electricity purchase, and the total power utilization cost of the direct current power utilization system is obviously reduced after the gas power generation system is used.
Referring to fig. 4, by using the method for optimizing energy consumption by comprehensive energy suitable for dc power users, an electric vehicle supplies power to a dc power system as required, charges the electric vehicle during a power consumption valley period, releases electric energy during a power consumption peak period, and significantly reduces the total power consumption cost of the dc power system after the peak and valley adjustment of the electric vehicle.
Referring to fig. 5, according to the comprehensive energy optimization energy utilization method applicable to the direct current electricity consumers of the present invention, the air energy hot water system receives hot air provided by the air conditioner external unit during air conditioning refrigeration to reduce electricity consumption of the air energy hot water system, and the power of the air energy hot water system is significantly reduced after linkage with the air conditioner.
Referring to fig. 6, by using the comprehensive energy optimization energy utilization method applicable to the direct current electricity utilization users, the air energy hot water system provides hot air for the air conditioner to reduce electricity consumption of the air conditioner when the air conditioner heats, and the power of the air conditioner is obviously reduced after the air energy hot water system is linked with the air energy water heater.
The embodiments of the present invention are not exhaustive, and those skilled in the art will still fall within the scope of the present invention as claimed without simple duplication and modification by the inventive efforts.
Claims (1)
1. A comprehensive energy optimization energy utilization method suitable for direct current power users is characterized by comprising the following steps:
1) to systems or apparatus for supplying electric energy
Firstly, a direct-current power distribution network is connected with a direct-current-direct-current bidirectional converter through a direct-current conducting circuit to supply power to a direct-current power utilization system;
the photovoltaic power generation system utilizes the photovoltaic cell to generate power to supply power to the direct current power utilization system;
the gas power generation system supplies power to the direct current system by using gas power generation based on the cost difference of gas and electricity purchase, and simultaneously directly provides gas for gas load;
the energy storage system is used for balancing energy balance among photovoltaic power generation, gas power generation, electric vehicles and various electrical loads and supplying power to the direct-current power utilization system according to needs;
the electric automobile supplies power to the direct current power utilization system according to the needs: charging during the off-peak electricity price period and releasing electric energy during the peak electricity period to facilitate peak regulation of the system;
2) electric loads involved
Including air conditioners, refrigerators, lighting loads and other dc electrical loads;
3) gas load involved
Load of working with gas;
4) related air energy hot water system
The air energy water heating system is linked with the air conditioner so as to improve the working efficiency and reduce the total power consumption of the air energy water heating system and the air conditioner;
firstly, an air energy hot water system provides hot air for an air conditioner so as to reduce the electricity consumption of the air conditioner when the air conditioner heats;
the air energy hot water system receives hot air provided by an air conditioner external unit when the air conditioner refrigerates so as to reduce the power consumption of the air energy hot water system;
5) related winter air supplement system
According to the temperature difference between the outdoor and the refrigerator, the winter air supplement system provides all or part of refrigeration for the refrigerator;
6) related light pipe daylight illumination system
The light pipe daylight illumination system provides daytime illumination for the indoor space by introducing outdoor sunlight in the daytime;
7) related DC-DC bidirectional converter
Realizing direct current electric energy bidirectional transmission regulation and control according to electric energy transmission needs;
8) related DC conductive circuit
A direct current power transmission line;
9) related communication channels
The system is suitable for information transmission channels between each system and equipment in the comprehensive energy optimization energy utilization of the direct-current power utilization users and the comprehensive energy optimization energy utilization management unit;
10) related gas conveying pipeline
The device is used for conveying fuel gas;
11) related air conveying pipeline
For the transport of air;
12) related light guide channel
For conducting sunlight;
13) the related comprehensive energy optimization energy utilization management unit
(ii) optimization of the target
min(Fall),Fall＝Fbuy+Fbattery+FEV+Fair.heater+Fad+Ffridge+Fwind+Fgas (1)
In equation (1): "min" is the minimum calculation function, FallIs the total electricity cost, FbuyIs the cost of electricity purchase and utilization, FbatteryIs the cost of use of the energy storage system, FEVIs the use cost of the battery of the electric automobile, Fair.heaterIs the use cost of the air energy hot water system, FadIs the cost of air conditioning use, FfridgeIs the cost of use of the refrigerator, FwindIs the use cost of the wind supplementing system in winter FgasIs the use cost of the gas power generation system;
in equation (2), ". Sigma" is the sign of the summation operation, Pbuy(t) is total electric power consumption for purchasing electricity, Cbuy(T) is the unit price of electricity purchased, T is the unit time period, T is the total time, T is the [1,10000 ]]；
In formula (3), Pbattery(t) is the energy storage system charge and discharge power and defines discharge as a positive value, charge as a negative value, Cdep-batteryThe cost is converted by charging and discharging of the energy storage system unit;
in the formula (4), PEV(t) is the electric vehicle charge and discharge power and defines charge as positive and discharge as negative, CEV(t) is the cost of charging and discharging the electric vehicle per unit;
in the formula (5), Pair.heater(t) electric power for air energy water heating system, Cair.heater(t) is the unit electricity cost of the air energy hot water system;
in the formula (6), Pad(t) is electric power for air conditioning, Cad(t) is the electricity cost of the air conditioning unit;
in the formula (7), Pfridge(t) is the electric power for the refrigerator, Cfridge(t) is the cost of electricity consumption by the refrigerator unit;
in the formula (8), Pwind(t) is the power consumption of the winter air supply system, Cwind(t) the unit electricity consumption cost of the winter air supply system;
in formula (9), Pgas(t) is the gas power, Cdep-gas(t) is the gas unit power depreciation cost;
constraint conditions
The working power of the direct current-direct current bidirectional converter does not exceed the capacity limit value, the capacity charging and power generation of the energy storage system do not exceed the capacity limit value, the working power of the gas power generation system does not exceed the capacity limit value, the working power of the photovoltaic power generation system does not exceed the capacity limit value, the working power of the electric vehicle does not exceed the capacity limit value, the working power of the lighting load does not exceed the capacity limit value, the working power of the air energy hot water system does not exceed the capacity limit value, the working power of the air conditioner does not exceed the capacity limit value, the working power of the refrigerator does not exceed the capacity limit value, the working power of the air supplement system in winter does not exceed the capacity limit value, the working power of the gas load does not exceed the capacity limit value, and the working power of other direct current loads do not exceed the capacity limit value;
Pgenerate＝PL (10)
in the formula (10), PgenerateTotal power of electricity generation and purchase, PLIs the total power consumption of the load;
Pgengrate＝Pbuy+Pbattery+Pgas-L+Psolar-L (11)
in formula (11), Pgas-LIs the power generated by the gas power generation system, Psolar-LIs the power generated by the photovoltaic power generation system;
PL＝PEV+Plight+Pair.heater+Pad+Pfridge+Pwind+Pother.load (12)
in the formula (12), PlightIs the electrical power for the lighting load, Pother.loadIs the electric power used by other direct current electric loads.
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