CN110453238B - Plateau oxygen system control device of coupling distributed power supply - Google Patents
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Abstract
The invention discloses a plateau oxygen supply system control device coupled with a distributed power supply, which comprises: the electric gas-to-oxygen generation unit is used for generating oxygen; the oxygen storage unit comprises an oxygen storage tank and an oxygen storage amount detection module, the oxygen storage tank is used for storing oxygen produced by the electricity-to-gas oxygen generation unit, and the oxygen storage amount detection module is used for detecting the storage amount in the oxygen storage tank and sending the storage amount to the main control unit; and the main control unit is used for controlling the oxygen generation unit for converting electricity into gas and the oxygen storage unit in real time according to the difference between the actual oxygen demand of the stationary place of the plateau area calculated by the oxygen concentration calculation module and the oxygen generation amount of the oxygen generation unit for converting electricity into gas. The invention has the advantages of effectively reducing the wind and light abandoning amount in plateau areas, improving the utilization rate of renewable energy sources, having good oxygen supply stability and the like.
Description
Technical Field
The invention mainly relates to the technical field of plateau oxygen supply, in particular to a plateau oxygen supply system control device coupled with a distributed power supply.
Background
Oxygen is an important energy source for maintaining the body, and like water and food, oxygen is also one of the key factors for ensuring the normal operation of the human body. If people live in a hypoxic environment for a long time, symptoms such as headache, insomnia, anorexia, tiredness, dyspnea and the like can appear, and sometimes even arrhythmia or transient syncope occurs.
The sea level in most regions of the Tibet is high (the average sea level is 4450m, the sea level in individual regions is up to 5000m), the climate is cold (the average temperature in the whole year is lower than 0 ℃), and the oxygen content of the air is only 50-60% of that of the inland, so that the oxygen supply problem in remote regions of the Tibet in the high and cold regions is very necessary to solve, but is limited by the shortage of fossil fuel resources, the fragile ecological environment and the severe climate conditions, the power grid in most regions of the Tibet is fragile, the energy supply is backward, and the oxygen supply problem of local residents cannot be solved. And the remote areas of high cold and high altitude in Tibet have the advantages of extremely abundant solar energy resources, annual average solar radiation total amount of 7000 plus 8000MJ/m2, annual average sunshine duration of about 3000h, similarly abundant wind power resources, annual average wind speed of 4-4.3 m/s, annual effective wind energy density of 119-199W/m 2 and effective wind power duration of more than 4000 h. The efficient utilization of abundant wind and light resources is one of the primary ways for effectively solving the serious civil problems of power supply and oxygen supply in remote areas with high altitude and cold.
The Power to Gas (P2G) technology is a technology for converting electricity into Gas fuel, i.e. oxygen and hydrogen by electrolyzing water, or further synthesizing natural Gas. In the prior art, the method mainly researches that the electricity-to-gas equipment is used as a controllable load to participate in power grid dispatching, improves the wind and light absorption capacity of a power grid, directly converts gas generated by water electrolysis into natural gas for storage and transportation, and directly discharges oxygen.
For example, chinese patent application No. CN201710238228.8 "a method for improving wind and light absorption capability of a power system by an electricity-to-gas energy storage technology" absorbs a part of wind power by an electricity-to-gas device, so as to reduce impact on the power system, and the obtained artificial natural gas is directly stored and transported in a natural gas system. The above patent does not consider the problem of oxygen supply and utilization by electrical conversion equipment.
Therefore, the renewable energy power generation and electricity-to-gas oxygen generation technology are combined to supply oxygen for residents in the plateau anoxic region, so that the oxygen supply system is not affected by uncertainty of wind-light power generation, and a circuit for maintaining stable indoor oxygen concentration and a control method thereof are urgently developed.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: aiming at the technical problems in the prior art, the invention provides the control device of the plateau oxygen supply system of the coupled distributed power supply, which can effectively improve the utilization efficiency of renewable energy sources and has good oxygen supply stability.
In order to solve the technical problems, the invention adopts the following technical scheme:
a plateau oxygen system control device of coupling distributed power supply, it includes:
the electric gas-to-oxygen generation unit is used for generating oxygen;
the oxygen storage unit comprises an oxygen storage tank and an oxygen storage amount detection module, the oxygen storage tank is used for storing oxygen produced by the electricity-to-gas oxygen generation unit, and the oxygen storage amount detection module is used for detecting the storage amount in the oxygen storage tank and sending the storage amount to the main control unit;
and the main control unit is used for controlling the electric-to-gas oxygen generation unit and the oxygen storage unit in real time according to the difference between the actual oxygen demand of the settlement point of the plateau area and the oxygen generation amount of the electric-to-gas oxygen generation unit.
As a further improvement of the invention: the electric-to-gas oxygen generation unit comprises a distributed power supply, an electric-to-gas control module and an electric-to-gas device, wherein the distributed power supply transmits redundant electric quantity to the electric-to-gas device, and the electric-to-gas device generates oxygen through water electrolysis.
As a further improvement of the invention: the distributed power supply comprises wind power generation equipment and/or light power generation equipment.
As a further improvement of the invention: the oxygen storage tank comprises a heavy-duty oxygen storage tank and a portable oxygen storage tank.
As a further improvement of the invention: the main control unit comprises a comparator, a switch, an oxygen production amount calculation module and an oxygen demand amount calculation module; the oxygen demand calculation module is used for receiving the oxygen concentration in a control time interval sensed by the oxygen concentration sensor, comparing the received value with the oxygen concentration of a set room to obtain a difference, multiplying the obtained deviation value with the volume of a room for oxygen supply to obtain the oxygen demand in the room in the control time interval, the oxygen production calculation module is used for receiving power data of the electric gas conversion equipment and multiplying the power data with a corresponding energy conversion coefficient to obtain the oxygen quantity produced by the electric gas conversion equipment in the control time interval, the comparator generates a control instruction of the switch according to the difference value of the oxygen demand and the oxygen quantity produced by the electric gas conversion equipment, and the switch controls the working states of the electric gas conversion oxygen production unit and the oxygen storage unit.
As a further improvement of the invention: the main control unit further comprises an oxygen storage decision module, and the oxygen storage decision module is used for controlling the oxygen storage state of the oxygen storage unit according to the oxygen storage amount.
As a further improvement of the invention: still include emergent system oxygen unit, emergent system oxygen unit includes emergent oxygenerator, PI regulator and oxygen flow calculation module, oxygen rate calculation module is used for calculating emergent oxygenerator oxygen suppliment rate to with the result feedback to the PI regulator, by PI regulator generation control signal, control emergent oxygenerator oxygen suppliment.
As a further improvement of the invention: the comparator comprises a first comparator and a second comparator, and the switches comprise a first low level switch, a second low level switch, a first high level switch and a second high level switch;
the first comparator is used for receiving the oxygen production amount of the electric gas conversion equipment and the indoor oxygen demand data transmitted by the oxygen production amount calculation module and the oxygen demand calculation module, comparing and calculating the difference to obtain the deviation oxygen amount, and controlling the conduction of the first low level switch or the conduction of the first high level switch;
the first low-level switch is switched on, the oxygen storage unit is started, the oxygen storage amount detection module detects the oxygen storage amount of the oxygen storage tank and sends the oxygen storage amount information to the feedback circuit, the feedback circuit sends the information of the oxygen storage tank which is not fully stored to the oxygen storage amount decision module, the oxygen storage amount decision module sends a control signal to the electromagnetic valve and the electric gas conversion control module corresponding to the oxygen storage tank, and the oxygen storage tank starts to store the surplus oxygen of the electric gas conversion equipment;
the first high level switch is switched on, the second comparator receives the deviation oxygen quantity sent by the second oxygen storage quantity detection module and the first comparator and the oxygen storage quantity data of the heavy oxygen storage tank, the deviation oxygen quantity is obtained by comparing and calculating the difference, and the second low level switch or the second high level switch is controlled to be switched on;
the second low level switch is switched on, the oxygen storage unit starts to operate, the second electromagnetic valve is switched on, and the heavy oxygen storage tank starts to supply oxygen to the room;
the second high-level switch is switched on, the oxygen storage unit and the emergency oxygen generation unit start to operate, the second electromagnetic valve is switched on, the oxygen storage tank delivers oxygen to the room, the oxygen rate calculation module calculates the oxygen supply rate of the emergency oxygen generator and feeds the result back to the PI regulator, and the PI regulator generates a control signal to control the oxygen generator to supply oxygen to the room;
and the oxygen flow calculation module receives the deviation oxygen quantity sent by the second comparator and multiplies the deviation oxygen quantity by the reciprocal of the control time period to obtain the oxygen flow of the emergency oxygen generator.
Compared with the prior art, the invention has the advantages that:
the invention relates to a plateau oxygen supply system control device of a coupled distributed power supply, which not only designs an oxygen supply circuit of coupled electric-to-gas conversion equipment powered by renewable energy sources, but also controls the operation modes of an electric-to-gas oxygen generation unit, an oxygen storage unit and an emergency oxygen generation unit through a corresponding control method, changes the current situations of large-scale wind abandonment and light abandonment in plateau areas such as the Tibet and the like, effectively improves the utilization efficiency of the renewable energy sources in the plateau areas such as the Tibet and the like, simultaneously sets the oxygen storage unit and the emergency oxygen generation unit, and controls a charging starting switch and a discharging starting switch, so that the oxygen supply system still has stable oxygen supply under the condition of sudden change of weather, and effectively solves the difficulty of oxygen supply in the plateau areas such as the Tibet and the like.
Drawings
Fig. 1 is a schematic diagram of the topology of the present invention.
Fig. 2 is a schematic diagram of a power variation curve of an electric power conversion device in a certain day according to an embodiment of the present invention.
FIG. 3 is a graph showing the change of oxygen concentration in a certain day in the embodiment of the present invention.
Detailed Description
The invention will be described in further detail below with reference to the drawings and specific examples.
As shown in fig. 1, the control device for a plateau oxygen supply system coupled with a distributed power supply of the present invention can couple high-proportion wind and light energy, and includes:
the electric-to-gas oxygen generation unit comprises a distributed power supply, an electric-to-gas control module and electric-to-gas equipment, wherein the distributed power supply transmits redundant electric quantity to the electric-to-gas equipment, and the electric-to-gas equipment generates oxygen by electrolyzing water;
the oxygen storage unit comprises an oxygen storage tank and an oxygen storage amount detection module, the oxygen storage tank is used for storing oxygen produced by the electricity-to-gas oxygen generation unit, and the oxygen storage amount detection module is used for detecting the storage amount in the oxygen storage tank and sending the storage amount to the main control unit;
the main control unit comprises a comparator, a switch, an oxygen production amount calculation module, an oxygen demand amount calculation module and an oxygen storage decision module. The oxygen demand calculation module is used for receiving the indoor oxygen concentration sensed by the oxygen concentration sensor and calculating the indoor oxygen demand, the oxygen production calculation module is used for receiving power data of the electric gas conversion equipment and calculating the oxygen quantity generated by the electric gas conversion equipment in a control time period, the comparator generates a control instruction of the switch according to the difference value of the oxygen demand and the oxygen quantity generated by the electric gas conversion equipment, and the switch controls the working states of the electric gas conversion oxygen generation unit and the oxygen storage unit. The oxygen storage decision module is used for controlling the oxygen storage state of the oxygen storage unit according to the oxygen storage amount.
In specific application examples, the oxygen tank comprises a heavy-duty oxygen tank and a portable oxygen tank.
In a specific application example, the emergency oxygen generation device further comprises an emergency oxygen generation unit, wherein the emergency oxygen generation unit comprises an emergency oxygen generator, a PI (proportional integral) regulator and an oxygen flow calculation module, the oxygen rate calculation module is used for calculating the oxygen supply rate of the emergency oxygen generator, feeding the result back to the PI regulator, and generating a control signal by the PI regulator to control the emergency oxygen generator to supply oxygen.
After the control device is adopted, the working principle is as follows:
firstly, the distributed power supply transmits redundant electric quantity to the electric conversion gas equipment, the electric conversion gas equipment produces oxygen through electrolyzing water, the oxygen production amount calculation module receives power data of the electric conversion gas equipment, and t is calculatedsTo teOxygen amount generated by oxygen generation unit for converting electricity into gas in time period
tsTo teThe specific formula of the control time interval of the system is as follows:
wherein k is2,k1,k0The energy conversion coefficient for the oxygen production of the electric gas-converting equipment,
for the power of the electrical apparatus at time t, tsTo control the start time of the interval, teFor controlling the end of interval time, t e (t)s,te)；
The oxygen demand calculation module receives the oxygen concentration sensor to sense the indoor oxygen concentration CsAnd calculating the indoor oxygen demand
The concrete formula is as follows:
wherein V is the volume of the oxygen supply room, CbIs the set room oxygen concentration;
the first comparator receives the oxygen production of the electric gas conversion equipment transmitted by the oxygen production calculation module and the oxygen demand calculation module
And indoor oxygen demand
Data are compared and differenced to obtain the deviation oxygen content
If it is not
The PWM modulator outputs a low level and the first low level switch is turned on if
If the voltage is greater than 0, the PWM modulator outputs a high level, and the first high level switch is switched on;
the first low-level switch is switched on, the oxygen storage unit is started, the first oxygen storage amount detection module and the second oxygen storage amount detection module respectively detect the oxygen storage amounts of the heavy oxygen storage tank and the portable oxygen storage tank, the oxygen storage amount information is sent to the feedback circuit, the feedback circuit sends the information of the oxygen storage tank which is not fully stored to the oxygen storage amount decision module, the oxygen storage amount decision module sends a control signal to the electromagnetic valve and the electric gas conversion control module of the corresponding oxygen storage tank, and the oxygen storage tank starts to store the surplus oxygen of the electric gas conversion equipment;
the first high level switch is turned on, and the second comparator receives the deviation oxygen quantity sent by the second oxygen storage quantity detection module and the first comparator
The oxygen storage capacity of the heavy oxygen storage tank
Data are compared and differenced to obtain the deviation oxygen content
If it is not
The PWM modulator outputs low level, the second low level switch is conducted if
The PWM modulator outputs a high level, and the second high level switch is switched on;
the second low level switch is switched on, the oxygen storage unit starts to operate, the second electromagnetic valve is switched on, the heavy oxygen storage tank starts to supply oxygen to the room, and the oxygen supply amount is
The second high level switch is switched on, the oxygen storage unit and the emergency oxygen generation unit start to operate, the second electromagnetic valve is switched on, the heavy oxygen storage tank delivers oxygen into the room, and the oxygen amount is
The oxygen rate calculation module calculates the oxygen supply rate of the emergency oxygen generator and feeds the result back to the PI regulator, and the PI regulator generates a control signal to control the oxygen generator to generate a rate vzOxygen is supplied to the room.
The oxygen flow calculation module receives the deviation oxygen quantity sent by the second comparator
And calculating the oxygen flow v of the emergency oxygen generatorzThe concrete formula is as follows:
in a specific application example, the oxygen supply system is installed at a certain village point in Tibet narqu, namely the control device is adopted.
The power change of the electric power conversion equipment on a certain day is shown in figure 2, and the day t is1To t2The specific operation conditions of the oxygen supply system of the time-period coupling electric gas conversion equipment are as follows: calculating t by the unit for converting electricity into gas and generating oxygen1Time to t2The oxygen generation amount is 216L, and the oxygen demand calculation module calculates t according to the current room oxygen concentration sensed by the oxygen concentration sensor1Time to t2The oxygen production amount in a time interval is 131L, and the calculation result is input into the comparator.
The deviation oxygen amount is-85L, the PWM modulator outputs a low level, the first low level switch is switched on, the oxygen storage decision module detects that the heavy oxygen storage tank has the surplus capacity to store the oxygen in the time period according to the information transmitted by the feedback circuit, and sends a control signal to the second electromagnetic valve and the electric gas conversion control module, and the heavy oxygen storage tank stores the surplus oxygen in the time period.
t7To t8The specific operation conditions of the oxygen supply system of the time-period coupling electric gas conversion equipment are as follows: calculating t by the unit for converting electricity into gas and generating oxygen7To t8The oxygen production amount in a time period is 75L, and the oxygen demand calculation module calculates t according to the current room oxygen concentration sensed by the oxygen concentration7To t8The oxygen generation amount in the time period is 123L, and the calculation result is input into the comparator.
The deviation oxygen volume is 48L, PWM modulator output high level, and first high level switch switches on, and the oxygen storage deviation is input into the comparator with the heavy oxygen storage tank oxygen storage volume at this moment, compares and seeks the difference, and the comparison result is less than 0, and the second low level switch switches on, and the second solenoid valve switches on, and heavy oxygen storage tank begins to supply oxygen to indoor, and the oxygen supply volume is 48L.
The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may be made by those skilled in the art without departing from the principle of the invention.
Claims (7)
1. The utility model provides a plateau oxygen system controlling means of coupling distributed generator which characterized in that includes:
the electric gas-to-oxygen generation unit is used for generating oxygen;
the oxygen storage unit comprises an oxygen storage tank and an oxygen storage amount detection module, the oxygen storage tank is used for storing oxygen produced by the electricity-to-gas oxygen generation unit, and the oxygen storage amount detection module is used for detecting the storage amount in the oxygen storage tank and sending the storage amount to the main control unit;
the main control unit is used for controlling the electric-to-gas oxygen generation unit and the oxygen storage unit in real time according to the difference between the actual oxygen demand of the settlement point of the plateau area and the oxygen generation amount of the electric-to-gas oxygen generation unit;
the main control unit comprises a comparator, a switch, an oxygen production amount calculation module and an oxygen demand amount calculation module; the oxygen demand calculation module is used for receiving the oxygen concentration in a control time interval sensed by the oxygen concentration sensor, comparing a received numerical value with the set room oxygen concentration to obtain a difference, multiplying the obtained deviation value with the volume of the oxygen supply room to obtain the oxygen demand in the room in the control time interval, the oxygen production calculation module is used for receiving power data of the electric gas conversion equipment and multiplying the power data with a corresponding energy conversion coefficient to obtain the oxygen quantity produced by the electric gas conversion equipment in the control time interval, the comparator generates a control instruction of the switch according to the difference value of the oxygen demand and the oxygen quantity produced by the electric gas conversion equipment, and the switch controls the working states of the electric gas conversion oxygen production unit and the oxygen storage unit.
2. The plateau oxygen system control device coupled with the distributed power supply of claim 1, wherein the electric-to-gas oxygen generation unit comprises a distributed power supply, an electric-to-gas control module and an electric-to-gas device, the distributed power supply transmits redundant electric quantity to the electric-to-gas device, and the electric-to-gas device generates oxygen by electrolyzing water.
3. The plateau oxygen system control device coupled with the distributed power supply of claim 2, wherein the distributed power supply comprises a wind power generation device and/or a light power generation device.
4. The plateau oxygen system control device of coupled distributed power supply of claim 1, 2 or 3, wherein the oxygen storage tank comprises a heavy-duty oxygen storage tank and a portable oxygen storage tank.
5. The plateau oxygen supply system control device of the coupled distributed power supply of claim 1, wherein the main control unit further comprises an oxygen storage decision module, and the oxygen storage decision module is used for controlling the oxygen storage state of the oxygen storage unit according to the oxygen storage amount.
6. The plateau oxygen supply system control device of the coupled distributed power supply of claim 5, further comprising an emergency oxygen generation unit, wherein the emergency oxygen generation unit comprises an emergency oxygen generator, a PI regulator, an oxygen flow calculation module and an oxygen rate calculation module, the oxygen rate calculation module is used for calculating the oxygen supply rate of the emergency oxygen generator and feeding the result back to the PI regulator, and the PI regulator generates a control signal to control the oxygen supply of the emergency oxygen generator.
7. The plateau oxygen system control device of coupled distributed power supply of claim 6, wherein the comparator comprises a first comparator and a second comparator, and the switches comprise a first low level switch, a second low level switch, a first high level switch and a second high level switch;
the first comparator is used for receiving the oxygen production amount of the electric gas conversion equipment and the indoor oxygen demand data transmitted by the oxygen production amount calculation module and the oxygen demand calculation module, comparing and calculating the difference to obtain the deviation oxygen amount, and controlling the conduction of the first low level switch or the conduction of the first high level switch;
the first low-level switch is switched on, the oxygen storage unit is started, the oxygen storage amount detection module detects the oxygen storage amount of the oxygen storage tank and sends the oxygen storage amount information to the feedback circuit, the feedback circuit sends the information of the oxygen storage tank which is not fully stored to the oxygen storage amount decision module, the oxygen storage amount decision module sends a control signal to the electromagnetic valve and the electric gas conversion control module corresponding to the oxygen storage tank, and the oxygen storage tank starts to store the surplus oxygen of the electric gas conversion equipment;
the first high level switch is switched on, the second comparator receives the deviation oxygen quantity sent by the second oxygen storage quantity detection module and the first comparator and the oxygen storage quantity data of the heavy oxygen storage tank, the deviation oxygen quantity is obtained by comparing and calculating the difference, and the second low level switch or the second high level switch is controlled to be switched on; the second oxygen storage amount detection module is used for detecting the oxygen storage amount of the heavy oxygen storage tank;
the second low level switch is switched on, the oxygen storage unit starts to operate, the second electromagnetic valve is switched on, and the heavy oxygen storage tank starts to supply oxygen to the room;
the second high-level switch is switched on, the oxygen storage unit and the emergency oxygen generation unit start to operate, the second electromagnetic valve is switched on, the heavy-duty oxygen storage tank delivers oxygen to the room, the oxygen rate calculation module calculates the oxygen supply rate of the emergency oxygen generator and feeds the result back to the PI regulator, and the PI regulator generates a control signal to control the oxygen generator to supply oxygen to the room;
and the oxygen flow calculation module receives the deviation oxygen quantity sent by the second comparator and multiplies the deviation oxygen quantity by the reciprocal of the control time period to obtain the oxygen flow of the emergency oxygen generator.
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| CN113151844B (en) * | 2021-04-30 | 2024-05-14 | 中国华能集团清洁能源技术研究院有限公司 | Plateau self-sufficient clean energy system and control method |
| CN113148958B (en) * | 2021-05-14 | 2023-09-15 | 广州埃珥赛璞医疗设备有限公司 | Oxygen supply amount adjusting system, method, equipment and medium for medical molecular sieve oxygen production equipment |
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| US4216067A (en) * | 1979-07-02 | 1980-08-05 | Glen Mitchell | Solar energy operated hydrogen refining process |
| CN201003073Y (en) * | 2006-12-05 | 2008-01-09 | 福建师范大学 | Oxygen making device |
| CN101018027A (en) * | 2007-01-25 | 2007-08-15 | 康健 | Solar energy 'water converted as hydrogen and oxygen' dynamic circulation energy storage and conversion device |
| CN102255354B (en) * | 2011-06-10 | 2013-05-29 | 天津瑞拓电子科技开发有限公司 | Miniaturization equipment system having functions of oxygen generation, water generation and wind-light complementary power generation |
| CN202401137U (en) * | 2011-12-23 | 2012-08-29 | 浙江省海洋开发研究院 | Wind and light complementary seawater hydrogen and oxygen making system |
| CN204364597U (en) * | 2015-01-05 | 2015-06-03 | 秦培强 | A kind of solar energy oxygen Medical oxygen bag |
| CN106757125B (en) * | 2017-01-13 | 2018-12-14 | 武汉大学 | A kind of plateau air water-intaking oxygen integrated device and its control method |
| CN107126614A (en) * | 2017-05-03 | 2017-09-05 | 辽宁沃德玛克工业设备制造有限公司 | A kind of highland oxygen-feeding device |
| CN109911854A (en) * | 2019-04-08 | 2019-06-21 | 青海省科学技术信息研究所有限公司 | Oxygen generation system in a kind of plateau High aititude room |
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