Alpine and high-altitude area sentry post and community high-quality life system configuration method based on cooperation of electricity, heat, oxygen and hydrogen

Abstract

The invention provides a high-cold and high-altitude area sentry post and community high-quality life system configuration method based on cooperation of electricity, heat, oxygen and hydrogen, and the method comprises the following steps: 1, determining the load demands of a high-cold and high-altitude area sentry post and community high-quality life system, determining the daily change data of basic parameters, and obtaining basic data; step 2, configuring and analyzing high-quality living systems of sentries and communities in alpine and high-altitude areas; analyzing daily oxygen supply capacity, daily electricity consumption of an air compressor, rated power of a bidirectional energy storage converter and capacity configuration of a chemical battery, determining rated power of a photovoltaic water electrode heat storage boiler and capacity of a heat storage tank, determining photovoltaic installed capacity, determining daily change data of basic parameters, and producing hydrogen; and the total heat provided by the type selection of hydrogen using equipment and the configuration of biomass or other energy fuel capacity. The heating power of the photovoltaic water electrode heat storage boiler can be reduced, and the living comfort of local people is improved.

Description

Technical Field

[0001] The present invention belongs to the field of life system configuration, and specifically relates to a method for configuring a high-quality life system for outposts and communities in cold and high-altitude areas based on the coordination of electricity, heat, oxygen and hydrogen. Background Art

[0002] Life is very hard due to the thin air in high altitude areas, large temperature differences between day and night, and the annual average temperature of glacier meltwater, the source of local domestic water, is below 5 degrees. The basic infrastructure such as power supply, heating, oxygen and vegetable supply for local community residents and border outposts is poor. In particular, the high altitude and cold areas are in a state of heating all year round. In addition, road traffic is inconvenient in high altitude and cold areas, and the travel time is limited in a year. It is difficult to effectively guarantee important energy and materials such as electricity, heat, oxygen and vegetables to maintain survival.

[0003] There are abundant solar energy resources at high altitudes, but due to the mountainous terrain and different lighting conditions in different regions, the light source for photovoltaic power generation is complex: it is composed of direct sunlight, reflected light from mountains and snow-capped mountains, and scattered light, which has the uniqueness of local lighting. At the same time, the energy demand for work and life does not match the rising and setting of the sun and the changes of seasons. Especially in the cold environment all year round, the heat load demand is large, and the daytime sunshine cannot meet the heat demand. Since there is a relative gap in the high-quality life system and configuration of outposts and communities in high-altitude and cold areas with coordinated electricity, heat, oxygen, and hydrogen, this research is based on scientific research needs. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a configuration method for a high-quality life system for outposts and communities in high-cold and high-altitude areas based on the coordination of electricity, heat, oxygen and hydrogen. It proposes to use photovoltaic power generation as energy, electricity storage, heating, heat storage, hydrogen production and compressed air as loads, and to use them through the mutual coordination and cooperation between equipment based on physical characteristics and load requirements. Taking seasonal changes into consideration, the problem of cross-seasonal electricity demand is solved by hydrogen production and fuel cell power supply, and the problem of year-round heating is solved by photovoltaic power generation and heating, sensible heat storage and biomass coordination; the oxygen supply problem is solved by nitrogen protection in compressed air sealed cabins; the oxygen produced in the hydrogen production process assists biomass or other boilers to generate heating for life, and the discharged carbon dioxide hot gas is supplied to vegetable greenhouses. Hydrogen storage is used to supplement seasonal energy shortages through fuel cell power generation, and LED vegetable greenhouses are used to supplement the lighting time of vegetables and promote vegetable photosynthesis. The problem of comfortable life throughout the year in high-altitude areas is solved. At the same time, the problem of mismatch between demand load and solar energy time, the problem of efficient utilization of equipment, the problem of energy supply security, and the improvement of energy utilization rate are solved to provide high-quality and comfortable life.

[0005] The principle of the configuration system is: photovoltaic power generation provides bidirectional energy storage inverters to power the load and chemical batteries, photovoltaic water electrode heat storage boilers to heat / sensible heat storage, and electrolyzers to produce hydrogen. When supplying power, photovoltaic power generation supplies power to the load, and a bidirectional energy storage inverter is used to provide energy from chemical batteries or fuel cells. The fuel cell stores hydrogen across seasons through photovoltaic power generation to achieve fuel cell power supply; when supplying heat, photovoltaic power generation is based on the principle of water electrode heating, and provides heating for life through photovoltaic water electrode heat storage boilers and sensible heat storage. The photovoltaic water electrode heat storage boiler can achieve 0~100% power adjustment to ensure efficient use of photovoltaic power generation, especially it can adapt to the electrolyzer to achieve maximum photovoltaic power tracking.

[0006] In order to achieve cross-seasonal power supply, hydrogen is directly produced and stored in electrolyzers during the period of sufficient photovoltaic power generation. During the period of insufficient photovoltaic power generation, a two-way energy storage inverter power supply is provided by a fuel cell to supply power to the load. The hydrogen production process of the electrolyzer is accompanied by oxygen to help biomass and other boilers to generate heat for domestic use, and carbon dioxide is discharged to help warm up the vegetable greenhouse. At the same time, it is combined with LED supplementary lighting technology to improve plant photosynthesis and promote rapid plant growth.

[0007] When supplying oxygen, a sealed insulated cabin is used to place photovoltaic inverters, storage batteries, fuel cells and other devices inside, and an air compressor is used to compress air into the sealed cabin to ensure 1 atmosphere of pressure, and nitrogen is retained through semi-permeable membrane technology. On the one hand, this ensures that the equipment can be used without derating, positive pressure can prevent dust, equipment dissipates heat through nitrogen and sealed cabin heat exchanger, and nitrogen protection can be used for active fire prevention. On the other hand, oxygen is produced through air separation to meet the national standard for oxygen use by humans and provide oxygen for life.

[0008] In order to adapt the electrolyzer hydrogen production to the fluctuation of photovoltaic power generation, the electrolyte of the electrolyzer hydrogen production is exchanged with the constant temperature zone of the photovoltaic water electrode heat storage boiler to ensure that the electrolyzer is always in the best constant temperature state.

[0009] Since glacier meltwater is the source of water for local people, low-temperature water brings too many changes to people's lives. By introducing the glacier meltwater source water into the sealed cabin heat exchanger, on the one hand, the temperature of the sealed insulation cabin is changed by low-temperature water to ensure the stable operation of the internal equipment of the sealed insulation cabin. On the other hand, the source water temperature is increased, and the preheated source water is sent to the photovoltaic water electrode heat storage boiler for heating, which reduces the heating power of the photovoltaic water electrode heat storage boiler and improves the comfort of local people's lives.

[0010] In order to achieve the above object, the present invention adopts the following technical solution:

[0011] A method for configuring a high-quality life system for outposts and communities in cold and high-altitude areas based on the coordination of electricity, heat, oxygen and hydrogen includes the following steps:

[0012] Step 1: Determine the load demand of high-quality life systems in outposts and communities in high-cold and high-altitude areas, determine the daily variation data of basic parameters, and obtain basic data;

[0013] Step 2: Configure and analyze the high-quality life systems of outposts and communities in high-cold and high-altitude areas, and analyze the daily oxygen supply capacity , Analysis of daily power consumption of air compressor , Bidirectional energy storage converter rated power and battery chemistry capacity configuration , Determine the rated power of the photovoltaic water electrode heat storage boiler and heat storage tank capacity , determine the photovoltaic installed capacity , determine the daily variation data of basic parameters, select hydrogen production and hydrogen use equipment, and configure the total heat provided by biomass or other energy fuel capacity .

[0014] Furthermore, the step 1 comprises:

[0015] Establish date based on historical data, on-site surveys and derived calculations , establish a date axis and daily electricity consumption , Daily maximum power consumption , Total daily heat consumption , Average daily outdoor temperature ℃, daily source water temperature ℃ and photovoltaic full-time hours per day The corresponding relationship;

[0016] Obtain local residential area based on on-site surveys, investigations and historical data , House insulation coefficient , local heating power per square meter Standards and number of staff , Daily per capita hot water volume , the longest number of days without sunlight in the local climate , as well as the demand for electricity, heat and oxygen due to seasonal changes.

[0017] Furthermore, the analysis of daily oxygen supply capacity include:

[0018] The nitrogen protection of the sealed insulation cabin adopts membrane nitrogen and oxygen separation technology. The ratio of nitrogen to oxygen in the compressed air is , through membrane nitrogen and oxygen separation technology, the air compressor presses nitrogen into a sealed and insulated cabin to protect the equipment in the cabin, and simultaneously obtains air-separated oxygen with unit volume pressure;

[0019] Air compressor daily working hours Equal to the working time of each air compressor within 0~24 hours The sum is:

[0020] (1)

[0021] in ;

[0022] Daily air separation oxygen capacity Equal to the volume of the sealed insulation chamber , Sealing coefficient , Average daily outdoor temperature ℃, target pressure and altitude pressure difference , Air compressor exhaust volume , Air compressor power , oxygen separation efficiency Daily working hours of air compressor Function :

[0023] Right now (2)

[0024] Among them, the pressure per unit volume is equal to the pressure inside the sealed and insulated cabin.

[0025] Furthermore, the daily power consumption of the air compressor is analyzed include:

[0026] Based on formula (1) and the electric power formula , and the daily power consumption of the air compressor is obtained Equal to the power of the air compressor Daily working hours of air compressor The product of, that is:

[0027] (3).

[0028] Furthermore, the rated power of the bidirectional energy storage converter is and battery chemistry capacity configuration include:

[0029] Design two working modes of bidirectional energy storage converter:

[0030] (1) Chemical battery power supply mode: When photovoltaic power generation satisfies the bidirectional energy storage inverter to supply power to the load and charge the chemical battery at the same time, the bidirectional energy storage inverter uses the chemical battery to supply power to the load in the morning and evening or when there is no sunlight;

[0031] (2) Fuel cell power supply mode: When photovoltaic power generation can only meet the heating power during a certain season, the bidirectional energy storage inverter uses fuel cells to provide energy for the load.

[0032] Furthermore, the rated power of the bidirectional energy storage converter is calculated and battery chemistry capacity configuration include:

[0033] Get the maximum power consumption based on basic data and maximum daily power consumption Data, rated power of bidirectional energy storage converter Equal to the maximum power consumption Air compressor power 、Increase power of future electrical facilities The sum of the two and the product of 150% overload capacity is:

[0034] (4)

[0035] Battery installation capacity Equal to the longest local day without sunlight Maximum daily power consumption , Daily power consumption of air compressor 、Daily increase in power consumption of electrical facilities in the future The product of the sum, that is:

[0036] (5).

[0037] Furthermore, the rated power of the photovoltaic water electrode heat storage boiler is determined and heat storage tank capacity include:

[0038] Determine the rated power of photovoltaic water electrode heat storage boiler :

[0039] Total daily heating supply Including heating and domestic hot water, where the daily domestic hot water consumption is equal to the daily per capita hot water volume Number of people The product of, and known, according to the formula of water mass and volume , the density of water , then the daily domestic hot water quality is obtained ,Right now:

[0040] (6)

[0041] The heat required for daily hot water Equal to the specific heat capacity of water , Daily hot water quality With water temperature rise The product of, that is:

[0042] (7)

[0043] Among them, water temperature rise The daily source water temperature Increase to the daily heat storage target water temperature ,Right now: , daily source water temperature Take the lowest temperature;

[0044] Heating is based on the local heating standard per square meter With 24-hour building area The product is the daily heating demand. ,Right now:

[0045] (8)

[0046] Therefore, according to equations (6) and (7), the total daily heat supply is Equal to the daily heat required for domestic hot water Daily heating demand The sum is:

[0047] (9)

[0048] Based on the basic data, the average of the shortest full-time hours of photovoltaic power generation for 5 consecutive days is found, which is the shortest full-time hours of photovoltaic power generation. , take the shortest full-time hours of photovoltaic power generation Photovoltaic power generation under The maximum daily heat supply of the photovoltaic water electrode heat storage boiler ; Due to the photovoltaic water electrode heat storage boiler daily heat supply It is generated by the conversion of photovoltaic water electrode heat storage boiler to generate heat, thus providing daily heat. Equal to the total daily heat supply Heating conversion efficiency of photovoltaic water electrode heat storage boiler The quotient of is:

[0049] (10)

[0050] Take the shortest full-time hours of photovoltaic power generation Daily heating power Equal to the longest number of days without sunlight Total daily heating supply The product of the photovoltaic water electrode heat storage boiler heating conversion efficiency The quotient of is:

[0051] (11)

[0052] The rated power of the photovoltaic water electrode heat storage boiler Equal to the shortest solar full-power hours Daily heating power Divide by the number of hours of full power generation in the shortest day of photovoltaic ,Right now:

[0053] (12)

[0054] Configure photovoltaic water electrode heat storage boiler tank capacity :

[0055] Water quality Equal to the volume of water Smaller than the heat storage tank volume ,Right now:

[0056] (15).

[0057] Furthermore, the photovoltaic installed capacity is determined include:

[0058] Based on formula (12), the number of hours of full power generation in the shortest photovoltaic day The rated power of the photovoltaic water electrode heat storage boiler determined at And based on this photovoltaic daily power generation Equal to photovoltaic power generation The number of full photovoltaic hours per day The product of, that is:

[0059] (16)

[0060] The number of hours of full power generation in the shortest photovoltaic day When it is cold, all photovoltaic power generation is used for heating and meets the heating demand. At this time, the maximum photovoltaic installed capacity , so the photovoltaic daily power generation Equal to photovoltaic installed capacity The shortest daily full power hours of photovoltaic The product of the photovoltaic water electrode heat storage boiler is also equal to the rated power of the photovoltaic water electrode heat storage boiler. The product of 24-hour heating is:

[0061] (17)

[0062] Considering the 120% overload of photovoltaic power generation and ensuring that the photovoltaic water electrode heat storage boiler is heated and the sensible heat storage should be able to maintain the number of days without sunlight heating demand, and thus the photovoltaic installed capacity for:

[0063] (18)

[0064] (19).

[0065] Furthermore, the determination of the historical average daily change basic data and configuration calculation data over the same period includes:

[0066] As the photovoltaic installed capacity Determination, based on the date of establishment of basic data Daily electricity consumption , Maximum power consumption 、Increase power in the future , the total daily heat consumption is calculated according to formula (9): , PV daily full power hours and photovoltaic power generation relationship.

[0067] Furthermore, the selection of hydrogen production and use equipment includes:

[0068] Fuel cells are used as a second power source to provide electricity for daily use and supplement the system, including:

[0069] Identifying the fuel / chemical power paradigm turning point :

[0070] As the ambient temperature gradually rises with the change of seasons, consider the daily electricity consumption , PV daily full power hours , Total daily heat consumption , and daily power consumption of air compressor and consider the future increase in the amount of electricity generated by electrical facilities When the ambient temperature gradually rises, the photovoltaic power generation for 5 consecutive days Greater than or equal to the total daily heat consumption in the same period , Daily power consumption of air compressor 、Daily increase in power consumption of electrical facilities in the future Daily electricity consumption The sum is:

[0071] (20)

[0072] At this time, photovoltaic power generation meets the bidirectional energy storage converter power supply mode of chemical battery, and the bidirectional energy storage converter is converted from fuel cell power supply mode to chemical battery power supply mode. The corresponding time The turning point of fuel / chemical power supply mode ;

[0073] Determine the maximum amount of electricity used for daily hydrogen production :

[0074] Find the maximum daily full power hours of photovoltaic And the corresponding determination of the total daily heat , photovoltaic daily power generation , Daily electricity consumption , and daily power consumption of air compressor and consider the future increase in the amount of electricity generated by electrical facilities , this is the maximum photovoltaic power generation , based on this data, determine the photovoltaic daily power generation Equal to the total daily heat consumption at the same time , Daily electricity consumption , Electricity consumption for hydrogen production , Daily power consumption of air compressor and future daily increase in electricity consumption of electrical facilities The sum is:

[0075] (twenty one)

[0076] The maximum amount of electricity used for daily hydrogen production is obtained for:

[0077] (twenty two)

[0078] Determine the number of days available for electrolyzer hydrogen production :

[0079] Full photovoltaic hours per day During the increase, when the photovoltaic daily power generation for five consecutive days Greater than or equal to the total daily heat consumption in the corresponding period , Daily electricity consumption , Daily power consumption of air compressor 、Daily increase in power consumption of electrical facilities in the future and 50% of the daily electricity consumption for hydrogen production The sum is:

[0080] (twenty three)

[0081] The corresponding time point at this time is defined as the start date of hydrogen production by electrolyzer ;

[0082] Full photovoltaic hours per day During the process of reduction, when the daily photovoltaic power generation for five days Less than or equal to the total daily heat consumption in the corresponding period , Daily electricity consumption , Daily power consumption of air compressor 、Daily increase in power consumption of electrical facilities in the future and 50% of the daily electricity consumption for hydrogen production The sum is:

[0083] (twenty four)

[0084] The corresponding time point is defined as the end date of hydrogen production by electrolyzer ;

[0085] The date of termination of hydrogen production by electrolyzer Start date of hydrogen production by electrolyzer Calculate the number of days that can be used for hydrogen production in the electrolyzer based on the DAYS function ,Right now:

[0086] (25)

[0087] The DAYS function calculates the number of days between two dates and determines the turning point of the chemical / fuel power supply model. :

[0088] When the photovoltaic power generation for five consecutive days Greater than or equal to the total daily heat consumption in the corresponding period , and is less than the corresponding daily heat consumption in the same period Daily electricity consumption Daily power consumption of air compressor 、Daily increase in power consumption of electrical facilities in the future When the sum is:

[0089] (26)

[0090] At this time, the bidirectional energy storage converter switches from the chemical battery power supply mode to the fuel cell power supply mode. The corresponding time point Turning Point for Chemical / Fuel Powered Electricity ;

[0091] Determine the total fuel cell capacity Total standard capacity of hydrogen demand :

[0092] Calculating the chemical / fuel-powered power model turning point The date of the turning point to the fuel / chemical power supply model Number of days between dates ,Right now:

[0093] (27)

[0094] Among them, the DAYS function calculates the number of days between two dates;

[0095] When the chemical battery power supply mode fails to supply power under abnormal conditions, it switches to the fuel cell power supply mode to provide emergency supplementary power supply for several days , take the number of days in chemical battery power mode ,Right now:

[0096] (28)

[0097] Among them, the number of days in chemical battery power mode Equal to 365 days in a year minus the number of days in fuel cell power mode , from which we get:

[0098] (29)

[0099] According to equations (29) and (28), the total capacity of the fuel cell is determined as Equal to the number of days of emergency power supply provided by fuel cells Total power supply days with fuel cell power supply mode The sum of the maximum daily power consumption , Daily power consumption of air compressor 、Daily increase in power consumption of electrical facilities in the future The product of the sum, that is:

[0100] (30)

[0101] Since the rated power of the bidirectional energy storage converter With maximum power consumption 150% overload capacity, thus taking the rated power of the bidirectional energy storage converter Rated output power of the fuel cell , and according to formula (30), the total capacity of the fuel cell is obtained Formula (27) Total power supply days of fuel cell power supply mode , the total standard capacity of hydrogen demand can be determined by the fuel cell parameters ;

[0102] Determine the electrolyzer hydrogen production equipment and related configuration:

[0103] Due to the total standard capacity of hydrogen demand Determine the number of days for hydrogen production by the electrolyzer during the photovoltaic power generation electrolyzer hydrogen production cycle according to formula (25) The power consumption of the maximum daily hydrogen production in formula (22) The rated power of the electrolyzer for hydrogen production is determined by the electrolyzer hydrogen production parameters. And related configurations of electrolyzer hydrogen production.

[0104] Furthermore, the total heat provided by the biomass or other energy fuel capacity is Without considering the demand for heat in the vegetable greenhouse, considering the change of ambient temperature and the reduction of photovoltaic power generation in a certain period, the photovoltaic water electrode heat storage boiler cannot meet the heating demand, and considering the total power supply days in the fuel cell power supply mode During this period, due to various reasons, the photovoltaic water electrode heat storage boiler cannot provide heat. At the same time, according to goal 2 "reliability to ensure dual power supply and dual heat source heating", biomass or other energy sources are used as the second heat source for heating or supplementary heating;

[0105] Based on the required daily heat supply of biomass or other energy Should be greater than or equal to the total heat supply on the same day ,Right now Therefore, the total number of days of power supply in fuel cell power supply mode is Total heat provided by biomass or other energy fuel capacity during the period Configuration should meet the total power supply days of fuel cell power supply mode Total daily heating supply The product of 24 hours and 24 hours is obtained according to formula (27):

[0106] (31).

[0107] Beneficial effects:

[0108] 1. Based on the uniqueness of local sunlight in high-altitude mountainous areas, the present invention establishes the turning points of fuel / chemical power supply modes respectively. and the chemical / fuel power supply model turning point , through configuration, ensure the maximum utilization of photovoltaic power generation to meet the annual power, heat and oxygen supply load requirements;

[0109] 2. The present invention is based on the year-round low-temperature heating demand and ensures heating by configuring the maximum utilization of photovoltaic power generation resources;

[0110] 3. Based on physical characteristics and load requirements, the present invention realizes the diversification of equipment functions through the mutual coordination between equipment, fully utilizes the associated and by-product energy, and achieves efficient energy utilization through configuration;

[0111] 4. The present invention solves the problem of mismatch between life needs and solar power generation by configuring electricity storage and heat storage capacity;

[0112] 5. The present invention realizes reliable dual power supply by using a bidirectional energy storage converter in conjunction with a chemical battery and a fuel cell;

[0113] 6. The present invention cooperates with the photovoltaic water electrode heat storage boiler and the biomass boiler to provide dual heat sources for complementary heating to ensure reliable heating. BRIEF DESCRIPTION OF THE DRAWINGS

[0114] Figure 1 This is a structural diagram of the system of the present invention for promoting high-quality life in outposts and communities in high-cold and high-altitude areas based on the synergy of electricity, heat, oxygen and hydrogen;

[0115] Figure 2 This is a flow chart of the method for configuring a high-quality life system for outposts and communities in cold and high-altitude areas based on the coordination of electricity, heat, oxygen and hydrogen according to the present invention.

[0116] Among them, the figure markings are: photovoltaic array 1, sealed insulation cabin 2, compressed gas unit 3, electrolyzer 4, bidirectional energy storage inverter 5, photovoltaic water electrode heat storage boiler 6, chemical battery 7, hydrogen storage tank 8, water electrode heating system 9, fuel cell 10, sealed cabin heat exchanger 11, air compressor 12, nitrogen and oxygen separation module 13, storage oxygen cylinder 14, source water supply 15, oxygen storage tank 16, biomass boiler 17, vegetable greenhouse 18, top constant temperature zone 19, electric heating zone 20, insulation material 21, electrolyte heat exchanger 22, constant temperature zone heat exchanger 23, main controller 24, controlled pressure reducing valve 25, irradiation meter 26. DETAILED DESCRIPTION

[0117] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0118] like Figure 1 As shown, the electricity, heat, oxygen and hydrogen collaboratively create a high-quality life system in high-altitude areas, which is composed of a photovoltaic array 1, a sealed insulation cabin 2, a compressed gas unit 3, an electrolyzer 4, a bidirectional energy storage inverter 5, and a photovoltaic water electrode heat storage boiler 6.

[0119] The sealed insulation cabin 2, electrolyzer 4, bidirectional energy storage inverter 5, photovoltaic water electrode heat storage boiler 6 are relatively concentratedly arranged around the living area, and the photovoltaic array 1 is arranged at a place suitable for photovoltaic power generation around the living area.

[0120] The photovoltaic array 1 is the main energy source for providing electricity and heat to local residents. The photovoltaic power generation output passes through the sealed insulation cabin 2 and is connected to the bidirectional energy storage converter 5 to provide load electricity and charge the chemical battery 7; it is directly connected to the electrolyzer 4 to provide energy for hydrogen production by the electrolyzer 4 and hydrogen storage tank 8; it is directly connected to the photovoltaic water electrode heat storage boiler 6 to provide heating and sensible heat storage energy. At the same time, the 0~100% power adjustable feature of the photovoltaic water electrode heat storage boiler 6 is used to cooperate with the electrolyzer 4 to produce hydrogen, so as to achieve the optimal power hydrogen production of the electrolyzer 4 and the maximum power tracking of photovoltaic power generation, and effectively utilize the photovoltaic power generation efficiency. The irradiation meter 26 is installed next to the photovoltaic array 1 to monitor the light intensity in real time.

[0121] In addition to the bidirectional energy storage converter 5, the sealed insulation cabin 2 also includes a fuel cell 10, a sealed cabin heat exchanger 11, and a chemical battery 7. The main controller 24 is embedded on the wall of the sealed insulation cabin 2, the controlled pressure reducing valve 25 is embedded on the cabin top, and the compressed gas unit 3 is installed outside the cabin; the bidirectional energy storage converter 5, the fuel cell 10, the sealed cabin heat exchanger 11, and the chemical battery 7 are distributed and installed in the sealed insulation cabin 2 according to the optimal connection relationship, and the sealed cabin heat exchanger 11 is placed on the top of the sealed insulation cabin 2. The main controller 24 is connected to all equipment sub-control systems, sensors, and control valves through communication lines, reads data, and controls in real time according to the control strategy. The pressure in the sealed insulation cabin 2 is guaranteed by the controlled pressure reducing valve 25, and the local oxygen demand for life is provided while the equipment is safely operated.

[0122] The compressed gas unit 3 includes an air compressor 12, a nitrogen and oxygen separation module 13 and an oxygen storage cylinder 14. The gas compressed by the air compressor 12 passes through the nitrogen and oxygen separation module 13, and the nitrogen is compressed into the sealed insulation cabin 2, providing nitrogen of a certain pressure in the sealed insulation cabin 2, which is a positive pressure nitrogen protection measure relative to the local atmosphere, and mainly plays the role of fire prevention, dust prevention, heat exchange and avoiding equipment derating; and the nitrogen and oxygen separation module 13 produces oxygen produced by air separation and is compressed into the oxygen storage cylinder 14, which meets the national standard for human oxygen use and provides oxygen demand for life. Among them, the nitrogen in the sealed insulation cabin 2 is used as the exchange medium between the equipment and the sealed cabin heat exchanger 11, and the introduced source water supply 15 is used through the sealed cabin heat exchanger 11 to regulate the temperature in the sealed insulation cabin 2 through heat exchange, ensuring the optimal working temperature inside the sealed insulation cabin 2 while increasing the water supply temperature of the glacier meltwater source.

[0123] The bidirectional energy storage inverter 5 receives the power generation energy of the photovoltaic array 1, charges and discharges the chemical battery on the one hand, and supplies power to the load on the other hand. In the period of weak light or no light, when the power generation of the photovoltaic array 1 cannot meet the charging and discharging of the chemical battery 7 to supply power to the load, the fuel cell 10 converts the hydrogen stored across seasons into electrical energy, and supplies power to the load through the bidirectional energy storage inverter 5.

[0124] The process of hydrogen production by the electrolyzer 4 and hydrogen storage tank 8 is during the period of abundant power generation of the photovoltaic array 1. The process of hydrogen production by the electrolyzer 4 and hydrogen storage tank 8 is accompanied by oxygen production and oxygen storage tank 16. The hydrogen production and storage are used to solve the problem of cross-seasonal power supply for life. Since industrial oxygen production cannot be directly used for human oxygen supply, the oxygen produced is stored in the oxygen storage tank 16 and discharged to assist the full combustion of the biomass boiler 17 or other boiler combustion medium. On the one hand, it provides heat for life, and on the other hand, it produces carbon dioxide gas and carries heat, such as heating for vegetable greenhouses 18 and cooperates with LED supplementary lighting technology to improve plant photosynthesis and promote rapid plant growth.

[0125] The photovoltaic water electrode heat storage boiler 6 is directly connected to the power generation output of the photovoltaic array 1, and converts electricity into heat through the water electrode heating system 9 using the water electrode heating principle, and uses the sensible heat storage principle of water to store heat for each day. At the same time, it coordinates with the photovoltaic array 1 output parallel electrolyzer 4, and uses the 0~100% power adjustable feature of the photovoltaic water electrode heat storage boiler 6, cooperates with the electrolyzer 4 to produce hydrogen, realizes the photovoltaic water electrode heat storage boiler 6 heating and sensible heat storage, and realizes the optimal power hydrogen production of the electrolyzer 4 and the maximum power tracking utilization of the photovoltaic array 1, and effectively utilizes the photovoltaic power generation efficiency.

[0126] The photovoltaic water electrode heat storage boiler 6 is divided into a top constant temperature zone 19 and an electric heating zone 20, and the electric heating zone 20 is isolated from the top constant temperature zone 19 by an insulating material 21. The electric heating zone 20 mainly applies the output power of the photovoltaic array 1 to the water resistor through the water electrode to generate heat to heat the water body. The top constant temperature zone 19 is mixed with a certain amount of relatively warm water output by the sealed cabin heat exchanger 11 to ensure the top constant temperature zone 19 in the photovoltaic water electrode heat storage boiler 6.

[0127] In order to adapt to the rapid response of electrolyzer 4 to the fluctuation of photovoltaic power generation, the electrolyte produced by electrolyzer 4 is exchanged with the constant temperature zone heat exchanger 23 of the photovoltaic water electrode heat storage boiler through the electrolyte heat exchanger 22 to ensure that the electrolyzer 4 is always in the best constant temperature state. The constant temperature zone heat exchanger 23 is installed in the top constant temperature zone 19, and the electrolyte heat exchanger 22 is installed in the electrolyte. The constant temperature zone heat exchanger 23 and the electrolyte heat exchanger 22 exchange heat through the water pipeline.

[0128] Since the meltwater from the glacier is the source water supply 15 for the lives of local people, the source water supply 15 is introduced into the sealed cabin heat exchanger 11. On the one hand, the temperature of the sealed insulation cabin 2 is exchanged by low-temperature water to ensure the stable operation of the internal equipment of the sealed insulation cabin 2. On the other hand, the temperature of the source water supply 15 is increased, and the relatively warm water output by the sealed cabin heat exchanger 11 enters the photovoltaic water electrode heat storage boiler 6 for further heating, reducing the heating power of the photovoltaic water electrode heat storage boiler 6 and improving the living comfort of local people.

[0129] like Figure 2As shown, the configuration method of the high-quality life system for outposts and communities in cold and high-altitude areas based on the synergy of electricity, heat, oxygen and hydrogen of the present invention includes the following steps:

[0130] Step 1: Determine the load requirements of high-quality life systems in outposts and communities in high-cold and high-altitude areas and obtain basic data:

[0131] Due to the harsh climate in high altitude areas, the time for transportation is limited, local resources are scarce, and basic electricity, heat, oxygen, etc. are difficult to guarantee, especially the high heating demand in the low temperature environment all year round. Therefore, we consider using solar energy resources to provide local electricity, heat, oxygen and vegetable needs for work and life throughout the year in an off-grid state. However, the energy demand for work and life does not match the rising and setting of the sun and seasonal changes. Therefore, we consider the high-efficiency utilization of energy, give full play to the utilization of associated and by-product energy realized by the function of equipment, and realize the local electricity, heat, oxygen and vegetable needs for work and life in an off-grid state throughout the year through reasonable energy distribution, optimal equipment configuration, cross-season energy storage technology, and optimized control methods.

[0132] Taking into account economy, reliability, operability and functionality, based on seasonal load demand, solar photovoltaic power generation is used as the main energy source, and chemical battery energy storage is combined with hydrogen production and storage technology to achieve year-round power supply; photovoltaic power generation and heat generation, sensible heat storage and biomass boilers are combined to achieve year-round heating needs; the nitrogen safety protection measures of the equipment are used to produce oxygen for life; the hydrogen production is used to produce oxygen to assist the combustion of biomass boilers, and hot flue gas is generated. After smoke removal treatment, carbon dioxide gas is produced to provide heat for vegetable greenhouses and promote plant growth. At the same time, LED fill lights are installed to increase the lighting time of plants and promote plant photosynthesis.

[0133] Since the electrolyzer hydrogen production and bidirectional energy storage converter have an optimal power range and a lower starting voltage limit, the bidirectional energy storage converter and the photovoltaic water electrode heat storage boiler both have the ability to track the maximum power point MPPT of photovoltaic power generation. When the photovoltaic power generation capacity is constant, the maximum power point characteristics of solar photovoltaic power generation and the linear heating characteristics of the photovoltaic water electrode heat storage boiler at 0 power start are fully utilized. By combining the photovoltaic water electrode heat storage boiler with the bidirectional energy storage converter or the electrolyzer hydrogen production equipment, the photovoltaic power generation energy is optimally distributed during the photovoltaic power generation cycle, and the maximum power of photovoltaic power generation is losslessly absorbed. That is, the energy storage power supply of the bidirectional energy storage converter, the hydrogen production of the electrolyzer, and the water heating of the photovoltaic water electrode heat storage boiler are realized, and the maximum utilization rate of solar power generation is guaranteed.

[0134] Among them, the MPPT tracking principle of photovoltaic power generation is: due to the lower limit voltage limit of the start-up of the electrolyzer hydrogen production and the bidirectional energy storage converter, and the photovoltaic water electrode heat storage boiler is based on the water resistance heating principle, the water resistance heating power is , I is current, R is resistance, it can be started from a linear load power of 0 power, and can respond to the maximum power output of the photovoltaic module by adjusting the water resistance heating power. It can also be combined with a bidirectional energy storage inverter or electrolyzer hydrogen production to quickly respond to the maximum power output of the photovoltaic module.

[0135] Since the nitrogen protection and oxygen supply in the sealed insulation cabin require compressed gas from the air compressor, the power demand of the air compressor is guaranteed. In addition, people are less sensitive to the fluctuation of heat load than the fluctuation of electricity load, and the heat load is much greater than the demand for electricity load. Based on energy conditions and needs, the configuration method with the best economy, reliability, ease of operation and living comfort is established. The goals to be achieved are: 1. Based on new energy power generation, the maximum guarantee of heating, power supply and oxygen supply throughout the year; 2. Reliability guarantees dual power supply and dual heat source heating; 3. Ensure the efficient use of photovoltaic power generation and equipment for collaborative work and by-product energy; 4. Ensure oxygen supply in local or specific rooms. The principles are: Principle 1, maximize the use of new energy power generation; Principle 2, people are more sensitive to electricity than heating, so power supply is given priority; Principle 3, when photovoltaic power generation can only meet the heating demand in a certain season, photovoltaic power generation is all used for heating, and fuel cells are used for power supply; Principle 4, unified units, both electricity and heat units are kilowatt-hours (Kwh).

[0136] The basic data obtained include:

[0137] 1.1 Establish the basic data table of average daily changes in the same period of history:

[0138] Establish date based on historical data, on-site surveys and derived calculations , establish a date axis and daily electricity consumption , Daily maximum power consumption , Total daily heat consumption , Average daily outdoor temperature ℃, daily source water temperature ℃ and photovoltaic full-time hours per day The corresponding relationship is shown in Table 1.

[0139] Table 1

[0140]

[0141] In order to unify the calculation units, the units of electricity and heat are both kilowatt-hours (Kwh).

[0142] 1.2 Obtain basic data:

[0143] Obtain local residential area based on on-site surveys, investigations and historical data , House insulation coefficient , local heating power per square meter Standards and number of staff , Daily per capita hot water volume , the longest number of days without sunlight in the local climate , as well as the demand for electricity, heat and oxygen due to seasonal changes.

[0144] 1.3 Define the turning point of power supply mode:

[0145] Due to the mountainous nature of high-altitude areas, the light source for photovoltaic power generation is complex. The light energy is composed of direct sunlight, reflected light from mountains and snow-capped mountains, and scattered light, and has the uniqueness of local lighting.

[0146] 1.3.1 Defining the fuel / chemical power supply model turning point , indicating that when photovoltaic power generation meets the bidirectional energy storage converter power supply mode of chemical battery, the bidirectional energy storage converter switches from fuel cell power supply mode to chemical battery power supply mode. The corresponding time point Turning point for fuel / chemical power supply model .

[0147] 1.3.2 Defining the turning point of the chemical / fuel power supply model , which is a point in the process of seasonal temperature change from high to low, marking the total daily heat consumption corresponding to a specific period of photovoltaic power generation Under the condition of unchanged heating supply, photovoltaic power generation cannot meet the power supply demand of electrolyzer hydrogen production. The chemical battery is in a critical state to meet the power demand of life through the bidirectional energy storage inverter. Therefore, the chemical power supply mode is converted to the fuel cell power supply mode. The fuel cell uses the bidirectional energy storage inverter to power life. The corresponding time point Turning Point for Chemical / Fuel Powered Electricity .

[0148] Step 2: Configure and analyze the high-quality life systems of outposts and communities in high-cold and high-altitude areas:

[0149] 2.1 Analysis of daily oxygen supply capacity :

[0150] Due to the limited living sealing conditions, it is impossible to meet the oxygen demand in low-altitude areas, so based on Target 4 "to ensure oxygen supply in local or specific rooms". Since the nitrogen protection of the sealed insulation cabin adopts membrane nitrogen and oxygen separation technology, the ratio of nitrogen N2 to oxygen O2 in the compressed air is Through membrane nitrogen and oxygen separation technology, the air compressor presses nitrogen N2 into a sealed and insulated cabin to protect the equipment in the cabin, and simultaneously obtains air-separated oxygen O2 with unit volume pressure.

[0151] Since the constant pressure nitrogen protection in the sealed insulation cabin is in intermittent operation, the nitrogen and oxygen separation is carried out during the working process of the air compressor compressing the gas, and the ambient temperature affects the air density. The temperature change and the airtightness of the sealed insulation cabin directly cause the pressure change in the sealed insulation cabin, thus the working time of the air compressor For the convenience of system configuration, the air compressor interval time is equal, so the air compressor daily working time Equal to the working time of each air compressor within 0~24 hours The sum is:

[0152] (1)

[0153] in .

[0154] Due to the daily oxygen separation capacity of air separation Sealed insulation compartment volume , Sealing coefficient , target pressure and altitude pressure difference (MPa), air compressor power , Daily working hours of air compressor , oxygen separation efficiency And air compressor exhaust volume Therefore, the daily oxygen separation capacity of air separation Equal to the volume of the sealed insulation chamber , Sealing coefficient , Average daily outdoor temperature ℃, target pressure and altitude pressure difference , Air compressor exhaust volume , Air compressor power , oxygen separation efficiency Daily working hours of air compressor Function :

[0155] Right now (2)

[0156] Among them, the pressure per unit volume is equal to the pressure inside the sealed and insulated cabin.

[0157] 2.2 Analysis of daily power consumption of air compressor :

[0158] Based on formula (1) and the electric power formula , and the daily power consumption of the air compressor is obtained Equal to the power of the air compressor Daily working hours of air compressor The product of, that is:

[0159] (3)

[0160] 2.3 Rated power of bidirectional energy storage converter and battery chemistry capacity configuration :

[0161] 2.3.1 Design two working modes of bidirectional energy storage converter:

[0162] (1) Chemical battery power supply mode: When photovoltaic power generation satisfies the bidirectional energy storage inverter to supply power to the load and charge the chemical battery at the same time, the bidirectional energy storage inverter uses the chemical battery to supply power to the load in the morning and evening or when there is no sunlight;

[0163] (2) Fuel cell power supply mode: When photovoltaic power generation can only meet the heating power during a certain season, the bidirectional energy storage inverter uses fuel cells to provide energy for the load.

[0164] 2.3.2 Calculation of rated power of bidirectional energy storage converter and battery chemistry capacity configuration :

[0165] According to Table 1, retrieve and obtain the maximum power consumption and maximum daily power consumption Data, due to the daily power consumption of the air compressor Provided by bidirectional energy storage converter, taking into account the future increase in the amount of electricity generated by electrical facilities The bidirectional energy storage converter has an overload capacity of 150%, so the rated power of the bidirectional energy storage converter is Equal to the maximum power consumption Compressor power 、Increase power of future electrical facilities The sum of the two and the product of 150% overload capacity is:

[0166] (4)

[0167] Consider maintaining the longest local no-sun days To meet the maximum daily power consumption , Daily power consumption of air compressor 、Daily increase in power consumption of electrical facilities in the future The sum of the power supply requirements determines the battery installation capacity Equal to the longest local day without sunlight Maximum daily power consumption , Daily power consumption of air compressor 、Daily increase in power consumption of electrical facilities in the future The product of the sum, that is:

[0168] (5)

[0169] 2.4 Determine the rated power of the photovoltaic water electrode heat storage boiler and heat storage tank capacity :

[0170] 2.4.1 Determine the rated power of the photovoltaic water electrode heat storage boiler :

[0171] Total daily heating supply Including heating and domestic hot water, where the daily domestic hot water consumption is equal to the daily per capita hot water volume Number of people The product of, and known, according to the formula of water mass and volume , the density of water , then the daily domestic hot water quality is obtained ,Right now:

[0172] (6)

[0173] The heat required for daily hot water Equal to the specific heat capacity of water , Daily hot water quality With water temperature rise The product of, that is:

[0174] (7)

[0175] Among them, water temperature rise The daily source water temperature Increase to the daily heat storage target water temperature ,Right now: . Daily source water temperature Take the lowest temperature.

[0176] Heating is based on the local heating standard per square meter With 24-hour building area The product is the daily heating demand. ,Right now:

[0177] (8)

[0178] Therefore, according to equations (6) and (7), the total daily heat supply is Equal to the daily heat required for domestic hot water Daily heating demand The sum is:

[0179] (9)

[0180] According to Table 1, the average value of the shortest full-time hours of photovoltaic power generation for 5 consecutive days is found, which is the shortest full-time hours of photovoltaic power generation. , take the shortest full-time hours of photovoltaic power generation Photovoltaic power generation under The maximum daily heat supply of the photovoltaic water electrode heat storage boiler .

[0181] The photovoltaic water electrode heat storage boiler provides daily heat It is generated by the conversion of photovoltaic water electrode heat storage boiler to generate heat, thus providing daily heat. Equal to the total daily heat supply Heating conversion efficiency of photovoltaic water electrode heat storage boiler The quotient of is:

[0182] (10)

[0183] Consider the longest days without sunlight in the local climate , and ensure that the photovoltaic water electrode heat storage boiler heating and sensible heat storage should meet the requirements of maintaining the number of days without sunlight Based on the principle of "maximizing the use of renewable energy for power generation" without considering biomass or other energy sources for heating, the shortest daily full-time hours of photovoltaic power generation are taken. Daily heating power Equal to the longest number of days without sunlight Total heating supply per day The product of the photovoltaic water electrode heat storage boiler heating conversion efficiency The quotient of is:

[0184] (11)

[0185] The rated power of the photovoltaic water electrode heat storage boiler Equal to the shortest solar full-power hours Daily heating power Divide by the number of hours of full power generation in the shortest day of photovoltaic ,Right now:

[0186] (12)

[0187] 2.4.2 Configuration of photovoltaic water electrode heat storage boiler tank capacity :

[0188] Due to the volume of the heat storage tank Larger than the volume of water ,Right now According to the definition of water's heat capacity, the mass of water Equal to the shortest solar full-power hours Daily heating power Divided by the specific heat of water With water temperature rise The product of, that is:

[0189] (13)

[0190] Therefore, the quality of water Specific heat capacity of water Under the condition of no change, the shortest daily full-time hours of photovoltaic Daily heating power With water temperature rise Proportional, that is, if the water temperature rises The minimum daily full-time hours of photovoltaic power generation need to be increased simultaneously Daily heating power . The water volume is obtained according to the water mass formula Equal to the mass of water Divide by the density of water ,Right now:

[0191] (14)

[0192] Due to the density of water , so the quality of water Equal to the volume of water Smaller than the heat storage tank volume ,Right now:

[0193] (15)

[0194] 2.5 Determine the installed capacity of photovoltaic power generation :

[0195] Based on formula (12), the shortest photovoltaic full-time hours The rated power of the photovoltaic water electrode heat storage boiler determined at And based on this photovoltaic daily power generation Equal to photovoltaic power generation The number of full photovoltaic hours per day The product of, that is:

[0196] (16)

[0197] According to the third heating principle, "all photovoltaic power generation is used for heating during cold periods, and fuel cells are used for power supply", the photovoltaic power generation hours are the shortest day. When it is cold, all photovoltaic power generation is used for heating and meets the heating demand. At this time, the maximum photovoltaic installed capacity , so the photovoltaic daily power generation Equal to photovoltaic installed capacity The shortest daily full power hours of photovoltaic The product of the photovoltaic water electrode heat storage boiler is also equal to the rated power of the photovoltaic water electrode heat storage boiler. The product of 24-hour heating is:

[0198] (17)

[0199] Considering the 120% overload of photovoltaic power generation and ensuring that the photovoltaic water electrode heat storage boiler is heated and the sensible heat storage should be able to maintain the number of days without sunlight heating demand, and thus the photovoltaic installed capacity for:

[0200] (18)

[0201] (19)

[0202] 2.6 Establish the basic data of average daily changes in the same period of history and configure the calculation data table 2:

[0203] As the photovoltaic installed capacity The determination is based on the historical average daily change basic data Table 1 establishment date Daily electricity consumption , Maximum power consumption 、Increase power in the future , the total daily heat consumption is calculated according to formula (9): , PV daily full power hours and photovoltaic power generation The relationship is shown in Table 2.

[0204] Table 2

[0205]

[0206] 2.7 Select hydrogen production and use equipment:

[0207] According to the second goal of "reliability guarantee of dual power supply and dual heat source heating", fuel cells are used as the second power source to provide electricity for daily use and supplement, including:

[0208] 2.7.1 Determining the turning point of the fuel / chemical power supply model :

[0209] As the ambient temperature gradually rises with the change of seasons, the daily electricity consumption at the corresponding time according to Table 2 , PV daily full power hours , Total daily heat consumption , and daily power consumption of air compressor and consider the future increase in the amount of electricity generated by electrical facilities When the ambient temperature gradually rises, the photovoltaic power generation for 5 consecutive days Greater than or equal to the total daily heat consumption in the same period , Daily power consumption of air compressor 、Daily increase in power consumption of electrical facilities in the future Daily electricity consumption The sum is:

[0210] (20)

[0211] This means that at this time, photovoltaic power generation meets the bidirectional energy storage converter power supply mode of chemical battery, and the bidirectional energy storage converter is converted from fuel cell power supply mode to chemical battery power supply mode. The corresponding time The turning point of fuel / chemical power supply mode .

[0212] 2.7.2 Determine the power consumption for the maximum daily hydrogen production :

[0213] Find the maximum daily full-time hours of photovoltaic power generation according to Table 2 And the corresponding daily heat consumption , photovoltaic daily power generation , Daily electricity consumption , and daily power consumption of air compressor and consider the future increase in the amount of electricity generated by electrical facilities , this is the maximum photovoltaic power generation , based on this data, determine the photovoltaic daily power generation Equal to the total daily heat consumption at the same time , Daily electricity consumption , Electricity consumption for hydrogen production , Daily power consumption of air compressor and future daily increase in electricity consumption of electrical facilities The sum is:

[0214] (twenty one)

[0215] The maximum amount of electricity used for daily hydrogen production is obtained for:

[0216] (twenty two)

[0217] 2.7.3 Determine the number of days available for electrolyzer hydrogen production :

[0218] As the seasons change throughout the year, the number of full-time hours of photovoltaic power generation will increase Increase and decrease photovoltaic daily power generation Increase and decrease synchronously. During the increase, according to Table 2, when the photovoltaic daily power generation for five consecutive days Greater than or equal to the total daily heat consumption in the same period , Daily electricity consumption , Daily power consumption of air compressor 、Daily increase in power consumption of electrical facilities in the future and 50% of the daily electricity consumption for hydrogen production The sum is:

[0219] (twenty three)

[0220] The corresponding time point at this time is defined as the start date of hydrogen production by electrolyzer .

[0221] Full photovoltaic hours per day In the process of reduction, according to Table 2, the photovoltaic daily power generation for five days Less than or equal to the total daily heat consumption in the corresponding period , Daily electricity consumption , Daily power consumption of air compressor 、Daily increase in power consumption of electrical facilities in the future and 50% of the daily electricity consumption for hydrogen production The sum is:

[0222] (twenty four)

[0223] The corresponding time point is defined as the end date of hydrogen production by electrolyzer .

[0224] The date of termination of hydrogen production by electrolyzer Start date of hydrogen production by electrolyzer Calculate the number of days that can be used for hydrogen production in the electrolyzer based on the DAYS function ,Right now:

[0225] (25)

[0226] Among them, since the working range of the electrolyzer hydrogen production power is within the rated power of the electrolyzer , when photovoltaic power generation reaches 50% of the rated power of the electrolyzer When the electrolyzer enters a stable hydrogen production state, 50% of the rated power of the electrolyzer is taken. is the lower limit of the electrolyzer rated power. When the daily hydrogen production time is constant, 50% of the daily hydrogen production power consumption The DAYS function can calculate the number of days between two dates. The basic format of the function is =DAYS(end date, start date).

[0227] 2.7.4 Determining the turning point of the chemical / fuel power supply model :

[0228] As the seasons change, the ambient temperature decreases the total amount of daily heat Increase, photovoltaic full-day hours Reduced photovoltaic daily power generation Reduce, according to Table 2, when the photovoltaic power generation for five consecutive days Greater than or equal to the total daily heat consumption in the corresponding period , and is less than the corresponding daily heat consumption in the same period Daily electricity consumption Daily power consumption of air compressor 、Daily increase in power consumption of electrical facilities in the future When the sum is:

[0229] (26)

[0230] At this time, the bidirectional energy storage converter switches from the chemical battery power supply mode to the fuel cell power supply mode. The corresponding time point Turning Point for Chemical / Fuel Powered Electricity .

[0231] Illustrating the turning point of the chemical / fuel power supply model A point in the process of seasonal temperature change from high to low, marked when photovoltaic power generation corresponds to the total daily heat consumption Under the condition of unchanged heating supply, photovoltaic power generation cannot meet the power supply demand of hydrogen production by electrolyzer. Chemical batteries are in a critical state to meet the power demand of daily life through bidirectional energy storage inverter. Therefore, the chemical power supply mode is converted into fuel cell power supply mode. Fuel cells provide power for daily life through bidirectional energy storage inverter. At the same time, photovoltaic power generation is turned on according to "Principle Three" to provide all the heating needs of daily life.

[0232] 2.7.5 Determine the total capacity of the fuel cell Total standard capacity of hydrogen demand :

[0233] Due to the turning point of chemical / fuel power supply mode It is a point in the process of seasonal changes from high temperature to low temperature. It is the beginning of the fuel cell using a bidirectional energy storage converter to power life, and the photovoltaic power generation is all used for heating life. The turning point of the fuel / chemical power supply mode It is a point in the process of seasonal changes from low temperature to high temperature. It is the end of the fuel cell powering life through the bidirectional energy storage inverter and the beginning of photovoltaic power generation and chemical battery powering life through the bidirectional energy storage inverter. The date of the turning point to the fuel / chemical power supply model The cumulative number of days between the dates is defined as the total number of days powered by the fuel cell power supply mode. Or use the DAYS function in Excel to calculate the turning point of chemical / fuel power supply mode The date of the turning point to the fuel / chemical power supply model Number of days between dates ,Right now:

[0234] (27)

[0235] The DAYS function can calculate the number of days between two dates. The basic format of the function is =DAYS(end date, start date).

[0236] According to formula (4), the rated power of the bidirectional energy storage converter is known to be and the maximum power consumption retrieved from Table 2 , Maximum daily power consumption Data, thus through the rated power of the bidirectional energy storage converter Total power supply days with fuel cell power supply mode The total fuel cell power supply is obtained by multiplying the chemical battery power supply mode by 2.5 times the power supply of the fuel cell. Considering that the chemical battery power supply mode cannot supply power under abnormal conditions, the fuel cell power supply mode is switched to achieve emergency supplementary power supply days. , take the number of days in chemical battery power mode ,Right now:

[0237] (28)

[0238] Among them, the number of days in chemical battery power mode Equal to 365 days in a year minus the number of days in fuel cell power mode ,thus:

[0239] (29)

[0240] According to equations (29) and (28), the total capacity of the fuel cell is determined as Equal to the number of days of emergency power supply provided by fuel cells Total power supply days with fuel cell power supply mode The sum of the maximum daily power consumption , Daily power consumption of air compressor 、Daily increase in power consumption of electrical facilities in the future The product of the sum, that is:

[0241] (30)

[0242] Since the rated power of the bidirectional energy storage converter With maximum power consumption 150% overload capacity, thus taking the rated power of the bidirectional energy storage converter Rated output power of the fuel cell , and according to formula (30), the total capacity of the fuel cell is obtained Formula (27) Total power supply days of fuel cell power supply mode , the total standard capacity of hydrogen demand can be determined by the fuel cell parameters ;

[0243] 2.7.6 Determine the electrolyzer hydrogen production equipment and related configuration:

[0244] Due to the total standard capacity of hydrogen demand Determine the number of days for hydrogen production by the electrolyzer during the photovoltaic power generation electrolyzer hydrogen production cycle according to formula (25) The power consumption of the maximum daily hydrogen production in formula (22) The rated power of the electrolyzer for hydrogen production can be determined by the mature electrolyzer hydrogen production parameters. And related configurations of electrolyzer hydrogen production.

[0245] 2.7 Total heat provided by biomass or other energy fuel capacity :

[0246] Without considering the heat demand of the vegetable greenhouse, considering the change of ambient temperature and the reduction of photovoltaic power generation in a certain period, the photovoltaic water electrode heat storage boiler cannot meet the heating demand, and considering the total power supply days in the fuel cell power supply mode During this period, due to various reasons, the photovoltaic water electrode heat storage boiler was unable to provide heating. At the same time, according to Target 2 "reliability to ensure dual power supply and dual heat source heating", biomass or other energy sources were used as the second heat source for heating or supplementary heating.

[0247] Based on the required daily heat supply of biomass or other energy Should be greater than or equal to the total heat supply on the same day ,Right now Therefore, the total number of days of power supply in fuel cell power supply mode is Total heat provided by biomass or other energy fuel capacity during the period Configuration should meet the total power supply days of fuel cell power supply mode Total daily heating supply The product of 24 hours and 24 hours is obtained according to formula (27):

[0248] (31)

[0249] Based on formula (11) and Get the daily heating power of photovoltaic water electrode heat storage boiler for:

[0250] (32)

[0251] Without considering the heating conversion efficiency Get the daily heat provided by biomass or other energy fuel capacity under the conditions :

[0252] (33)

[0253] From this we can see that the daily heat provided by the configuration of biomass or other energy fuel capacity The daily heating power of photovoltaic water electrode heat storage boiler of .

Claims

1. A method for configuring a high-quality life system for outposts and communities in cold and high-altitude areas based on the coordination of electricity, heat, oxygen and hydrogen, characterized in that: The steps include: Step 1: Determine the load demand of high-quality life systems in outposts and communities in high-cold and high-altitude areas, determine the daily variation data of basic parameters, and obtain basic data; Step 2: Configure and analyze the high-quality life systems of outposts and communities in high-cold and high-altitude areas, and analyze the daily oxygen supply capacity , Analysis of daily power consumption of air compressor , Rated power of bidirectional energy storage converter and battery chemistry capacity configuration , Determine the rated power of the photovoltaic water electrode heat storage boiler and heat storage tank capacity , determine the photovoltaic installed capacity , determine the daily variation data of basic parameters, select hydrogen production and hydrogen use equipment, and configure the total heat provided by biomass or other energy fuel capacity .

2. The method for configuring a high-quality life system for outposts and communities in cold and high-altitude areas based on the synergy of electricity, heat, oxygen and hydrogen according to claim 1 is characterized in that: The step 1 comprises: Establish date based on historical data, on-site surveys and derived calculations , establish a date axis and daily electricity consumption , Maximum daily power consumption , Total daily heat consumption , Average daily outdoor temperature ℃, daily source water temperature ℃ and photovoltaic full-time hours per day The corresponding relationship; Obtain local residential area based on on-site surveys, investigations and historical data , House insulation coefficient , local heating power per square meter Standards and number of staff , Daily per capita hot water volume , the longest number of days without sunlight in the local climate , as well as the demand for electricity, heat and oxygen due to seasonal changes.

3. The method for configuring a high-quality life system for outposts and communities in cold and high-altitude areas based on the synergy of electricity, heat, oxygen and hydrogen according to claim 1 is characterized in that: The analyzed daily oxygen supply capacity include: The nitrogen protection of the sealed insulation cabin adopts membrane nitrogen and oxygen separation technology. The ratio of nitrogen to oxygen in the compressed air is , through membrane nitrogen and oxygen separation technology, the air compressor presses nitrogen into a sealed and insulated cabin to protect the equipment in the cabin, and simultaneously obtains air-separated oxygen with unit volume pressure; Air compressor daily working hours Equal to the working time of each air compressor within 0~24 hours The sum is: （1） in, ; Daily air separation oxygen capacity Equal to the volume of the sealed insulation chamber , Sealing coefficient , Average daily outdoor temperature ℃, target pressure and altitude pressure difference , Air compressor exhaust volume , Air compressor power , oxygen separation efficiency Daily working hours of air compressor Function : Right now (2) Among them, the pressure per unit volume is equal to the pressure inside the sealed and insulated cabin.

4. The method for configuring a high-quality life system for outposts and communities in cold and high-altitude areas based on the synergy of electricity, heat, oxygen and hydrogen according to claim 1 is characterized in that: The analysis of air compressor daily power consumption include: Based on formula (1) and the electric power formula , and the daily power consumption of the air compressor is obtained Equal to the power of the air compressor Daily working hours of air compressor The product of, that is: （3）。 5. The method for configuring a high-quality life system for outposts and communities in cold and high-altitude areas based on the synergy of electricity, heat, oxygen and hydrogen according to claim 1 is characterized in that: The rated power of the bidirectional energy storage converter and battery chemistry capacity configuration include: Design two working modes of bidirectional energy storage converter: (1) Chemical battery power supply mode: When photovoltaic power generation satisfies the bidirectional energy storage inverter to supply power to the load and charge the chemical battery at the same time, the bidirectional energy storage inverter uses the chemical battery to supply power to the load in the morning and evening or when there is no sunlight; (2) Fuel cell power supply mode: When photovoltaic power generation can only meet the heating power during a certain season, the bidirectional energy storage inverter uses fuel cells to provide energy for the load.

6. The method for configuring a high-quality life system for outposts and communities in cold and high-altitude areas based on the synergy of electricity, heat, oxygen and hydrogen according to claim 5 is characterized in that: Calculate the rated power of a bidirectional energy storage converter and battery chemistry capacity configuration include: Get the maximum power consumption based on basic data and maximum daily power consumption Data, rated power of bidirectional energy storage converter Equal to the maximum power consumption Compressor power 、Increase power of future electrical facilities The sum of the two and the product of 150% overload capacity is: （4） Battery installation capacity Equal to the longest local day without sunlight Maximum daily power consumption , Daily power consumption of air compressor 、Daily increase in power consumption of electrical facilities in the future The product of the sum, that is: （5）。 7. The method for configuring a high-quality life system for outposts and communities in cold and high-altitude areas based on the synergy of electricity, heat, oxygen and hydrogen according to claim 1 is characterized in that: Determining the rated power of the photovoltaic water electrode heat storage boiler and heat storage tank capacity include: Determine the rated power of photovoltaic water electrode heat storage boiler : Total daily heating supply Including heating and domestic hot water, where the daily domestic hot water consumption is equal to the daily per capita hot water volume Number of people The product of, and known, according to the formula of water mass and volume , the density of water , then the daily domestic hot water quality is obtained ,Right now: （6） The heat required for daily hot water Equal to the specific heat capacity of water , Daily hot water quality With water temperature rise The product of, that is: （7） Among them, water temperature rise The daily source water temperature Increase to the daily heat storage target water temperature ,Right now: , daily source water temperature Take the lowest temperature; Heating is based on the local heating standard per square meter With 24-hour building area The product is the daily heating demand. ,Right now: （8） Therefore, according to equations (6) and (7), the total daily heat supply is Equal to the daily heat required for domestic hot water Daily heating demand The sum is: （9） Based on the basic data, the average of the shortest full-time hours of photovoltaic power generation for 5 consecutive days is found, which is the shortest full-time hours of photovoltaic power generation. , take the shortest full-time hours of photovoltaic power generation Photovoltaic power generation under The maximum daily heat supply of the photovoltaic water electrode heat storage boiler ; Due to the photovoltaic water electrode heat storage boiler daily heat supply It is generated by the conversion of photovoltaic water electrode heat storage boiler to generate heat, thus providing daily heat. Equal to the total daily heat supply Heating conversion efficiency of photovoltaic water electrode heat storage boiler The quotient of is: （10） Take the shortest full-time hours of photovoltaic power generation Daily heating power Equal to the longest number of days without sunlight Total heating supply per day The product of the photovoltaic water electrode heat storage boiler heating conversion efficiency The quotient of is: （11） The rated power of the photovoltaic water electrode heat storage boiler Equal to the shortest solar full-power hours Daily heating power Divide by the number of hours of full power generation in the shortest day of photovoltaic ,Right now: （12） Configure photovoltaic water electrode heat storage boiler tank capacity : Water quality Equal to the volume of water Smaller than the heat storage tank volume ,Right now: （15）。 8. The method for configuring a high-quality life system for outposts and communities in cold and high-altitude areas based on the synergy of electricity, heat, oxygen and hydrogen according to claim 7 is characterized in that: Determining the photovoltaic installed capacity include: Based on formula (12), the shortest photovoltaic full-time hours The rated power of the photovoltaic water electrode heat storage boiler determined at And based on this photovoltaic daily power generation Equal to photovoltaic power generation The number of full photovoltaic hours per day The product of, that is: （16） The number of hours of full power generation in the shortest photovoltaic day When it is cold, all photovoltaic power generation is used for heating and meets the heating demand. At this time, the maximum photovoltaic installed capacity , so the photovoltaic daily power generation Equal to photovoltaic installed capacity The shortest daily full power hours of photovoltaic The product of the photovoltaic water electrode heat storage boiler is also equal to the rated power of the photovoltaic water electrode heat storage boiler. The product of 24-hour heating is: （17） Considering the 120% overload of photovoltaic power generation and ensuring that the photovoltaic water electrode heat storage boiler is heated and the sensible heat storage should be able to maintain the number of days without sunlight heating demand, and thus the photovoltaic installed capacity for: （18） （19）。 9. The method for configuring a high-quality life system for outposts and communities in cold and high-altitude areas based on the synergy of electricity, heat, oxygen and hydrogen according to claim 7 is characterized in that: The determination of the historical average daily change basic data and configuration calculation data for the same period includes: As the photovoltaic installed capacity Determination, based on the date of establishment of basic data Daily electricity consumption , Maximum power consumption 、Increase power in the future , the total daily heat consumption is calculated according to formula (9): , PV daily full power hours and photovoltaic power generation relationship.

10. The method for configuring a high-quality life system for outposts and communities in cold and high-altitude areas based on the synergy of electricity, heat, oxygen and hydrogen according to claim 1 is characterized in that: The selection of hydrogen production and use equipment includes: Fuel cells are used as a second power source to provide electricity for daily use and supplement the system, including: Identifying the fuel / chemical power paradigm turning point : As the ambient temperature gradually rises with the change of seasons, consider the daily electricity consumption , PV daily full power hours , Total daily heat consumption , and daily power consumption of air compressor and consider the future increase in the amount of electricity generated by electrical facilities When the ambient temperature gradually rises, the photovoltaic power generation for 5 consecutive days Greater than or equal to the total daily heat consumption in the same period , Daily power consumption of air compressor 、Daily increase in power consumption of electrical facilities in the future Daily electricity consumption The sum is: （20） At this time, photovoltaic power generation meets the bidirectional energy storage converter power supply mode of chemical battery, and the bidirectional energy storage converter is converted from fuel cell power supply mode to chemical battery power supply mode. The corresponding time The turning point of fuel / chemical power supply mode ; Determine the maximum amount of electricity used for daily hydrogen production : Find the maximum daily full power hours of photovoltaic And the corresponding determination of the total daily heat , photovoltaic daily power generation , Daily electricity consumption , and daily power consumption of air compressor and consider the future increase in the amount of electricity generated by electrical facilities , this is the maximum photovoltaic power generation , based on this data, determine the photovoltaic daily power generation Equal to the total daily heat consumption at the same time , Daily electricity consumption , Electricity consumption for hydrogen production , Daily power consumption of air compressor and future daily increase in electricity consumption of electrical facilities The sum is: （21） The maximum amount of electricity used for daily hydrogen production is obtained for: （22） Determine the number of days available for electrolyzer hydrogen production : Full photovoltaic hours per day During the increase, when the photovoltaic power generation for five consecutive days Greater than or equal to the total daily heat consumption in the corresponding period , Daily electricity consumption , Daily power consumption of air compressor 、Daily increase in power consumption of electrical facilities in the future and 50% of the daily electricity consumption for hydrogen production The sum is: （23） The corresponding time point at this time is defined as the start date of hydrogen production by electrolyzer ; Full photovoltaic hours per day During the process of reduction, when the photovoltaic power generation for five days Less than or equal to the total daily heat consumption in the corresponding period , Daily electricity consumption , Daily power consumption of air compressor 、Daily increase in power consumption of electrical facilities in the future and 50% of the daily electricity consumption for hydrogen production The sum is: （24） The corresponding time point is defined as the end date of hydrogen production by electrolyzer ; The date of termination of hydrogen production by electrolyzer Start date of hydrogen production by electrolyzer Calculate the number of days that can be used for hydrogen production in the electrolyzer based on the DAYS function ,Right now: （25） The DAYS function calculates the number of days between two dates and determines the turning point of the chemical / fuel power supply model. : When the photovoltaic power generation for five consecutive days Greater than or equal to the total daily heat consumption in the corresponding period , and is less than the corresponding daily heat consumption in the same period Daily electricity consumption Daily power consumption of air compressor 、Daily increase in power consumption of electrical facilities in the future When the sum is: （26） At this time, the bidirectional energy storage converter switches from the chemical battery power supply mode to the fuel cell power supply mode. The corresponding time point Turning Point for Chemical / Fuel Powered Electricity ; Determine the total fuel cell capacity Total standard capacity of hydrogen demand : Calculating the chemical / fuel-powered power model turning point The date of the turning point to the fuel / chemical power supply model Number of days between dates ,Right now: （27） Among them, the DAYS function calculates the number of days between two dates; When the chemical battery power supply mode fails to supply power under abnormal conditions, it switches to the fuel cell power supply mode to provide emergency supplementary power supply for several days , take the number of days in chemical battery power mode ,Right now: （28） Among them, the number of days in chemical battery power mode Equal to 365 days in a year minus the number of days in fuel cell power mode , from which we get: （29） According to equations (29) and (28), the total capacity of the fuel cell is determined as Equal to the number of days of emergency power supply provided by fuel cells Total power supply days with fuel cell power supply mode The sum of the maximum daily power consumption , Daily power consumption of air compressor 、Daily increase in power consumption of electrical facilities in the future The product of the sum, that is: （30） Since the rated power of the bidirectional energy storage converter With maximum power consumption 150% overload capacity, thus taking the rated power of the bidirectional energy storage converter Rated output power of the fuel cell , and according to formula (30), the total capacity of the fuel cell is obtained Formula (27) Total power supply days of fuel cell power supply mode , the total standard capacity of hydrogen demand can be determined by the fuel cell parameters ; Determine the electrolyzer hydrogen production equipment and related configuration: Due to the total standard capacity of hydrogen demand Determine the number of days for hydrogen production by the electrolyzer according to formula (25) during the hydrogen production cycle of the photovoltaic power generation electrolyzer The power consumption of the maximum daily hydrogen production in formula (22) The rated power of hydrogen production by the electrolyzer is determined by the parameters of hydrogen production by the electrolyzer. And related configurations of electrolyzer hydrogen production.

11. The method for configuring a high-quality life system for outposts and communities in cold and high-altitude areas based on the synergy of electricity, heat, oxygen and hydrogen according to claim 1 is characterized in that: The total heat provided by the biomass or other energy fuel capacity of the configuration Without considering the demand for heat in the vegetable greenhouse, considering the change of ambient temperature and the reduction of photovoltaic power generation in a certain period, the photovoltaic water electrode heat storage boiler cannot meet the heating demand, and considering the total power supply days in the fuel cell power supply mode During this period, due to various reasons, the photovoltaic water electrode heat storage boiler cannot provide heat. At the same time, according to goal 2 "reliability to ensure dual power supply and dual heat source heating", biomass or other energy sources are used as the second heat source for heating or supplementary heating; Based on the required daily heat supply of biomass or other energy Should be greater than or equal to the total heat supply on the same day ,Right now , so the total number of days of power supply in fuel cell power supply mode is Total heat provided by biomass or other energy fuel capacity during the period Configuration should meet the total power supply days of fuel cell power supply mode Total daily heating supply The product of 24 hours and 24 hours is obtained according to formula (27): （31）。

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