CN114109777B - Electric energy management system for air compression station - Google Patents
Electric energy management system for air compression station Download PDFInfo
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- CN114109777B CN114109777B CN202111459674.4A CN202111459674A CN114109777B CN 114109777 B CN114109777 B CN 114109777B CN 202111459674 A CN202111459674 A CN 202111459674A CN 114109777 B CN114109777 B CN 114109777B
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- 230000006835 compression Effects 0.000 title claims abstract description 19
- 238000007906 compression Methods 0.000 title claims abstract description 19
- 230000005611 electricity Effects 0.000 claims abstract description 61
- 238000004519 manufacturing process Methods 0.000 claims abstract description 36
- 238000000034 method Methods 0.000 claims abstract description 11
- 238000004134 energy conservation Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 89
- 238000004364 calculation method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
- F04B37/10—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use
- F04B37/12—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use to obtain high pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B41/00—Pumping installations or systems specially adapted for elastic fluids
- F04B41/02—Pumping installations or systems specially adapted for elastic fluids having reservoirs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B51/00—Testing machines, pumps, or pumping installations
Abstract
The invention discloses an electric energy management system for an air compression gas station, which relates to the technical field of electric energy management and solves the technical problem of energy conservation and electricity utilization of the air compression gas station; an electric energy management system for an air compression station comprises a processor; the processor is used for analyzing basic data to generate an energy-saving instruction and the standby time of gas in the gas storage tank, wherein the basic data comprises time-of-use electricity price information, gas production data, field gas consumption data, gas storage tank data and gas storage data; the process of generating the energy saving instruction comprises the following steps: according to the working time and the time-of-use electricity price information of the air compression station; when a time period change point exists in the working time, generating a first energy-saving instruction or a second energy-saving instruction; when no time period change point exists in the working time, acquiring the electricity price information before and after the next time period change point after the working time is ended; generating a third energy-saving instruction or a fourth energy-saving instruction; and acquiring a time period change point in the non-working time, and generating a fifth energy-saving instruction. The invention has reasonable design and is convenient for electric energy management of the air compression station.
Description
Technical Field
The invention belongs to the technical field of electric energy management, and particularly relates to an electric energy management system for an air compression station.
Background
The compressed air is used as a convenient and environment-friendly power source, is widely applied to various industries such as machinery, electronics, food, textile and the like, and is one of the most widely applied power sources at present. The air compression station system provides compressed air meeting the requirements for users, and is necessary equipment for gas utilization units.
In some areas, time-share charging is adopted, that is, different electricity prices are adopted in different time periods of a day, and at the moment, the electric energy management mode of the existing air pressure station cannot meet the requirement of production energy conservation of enterprises.
Therefore, there is a need for an electric energy management system for an air compressor station to solve the above problems.
Disclosure of Invention
The invention provides an electric energy management system for an air compression station, which is used for solving the technical problem of energy conservation and electricity utilization of the air compression station.
The purpose of the invention can be realized by the following technical scheme:
an electric energy management system for an air compression station comprises a processor;
the processor is used for analyzing basic data to generate an energy-saving instruction and the standby time of gas in the gas storage tank, wherein the basic data comprises time-of-use electricity price information, gas production data, field gas consumption data, gas storage tank data and gas storage data;
the process of generating the energy saving instruction comprises the following steps:
according to the working time and the time-of-use electricity price information of the air compression station; when a time period change point exists in the working time, acquiring the electricity price information before and after the time period change point; generating a first energy saving instruction when the electricity price before the time period changing point is higher than the electricity price after the time period changing point; generating a second energy-saving instruction when the electricity price before the period change point is lower than the electricity price after the period change point;
when no time period change point exists in the working time, acquiring the electricity price information before and after the next time period change point after the working time is ended; generating a third energy saving instruction when the electricity price before the period change point is higher than the electricity price after the period change point; generating a fourth energy saving instruction when the electricity price before the period change point is lower than the electricity price after the period change point;
and acquiring a time period change point in non-working time, and generating a fifth energy-saving instruction according to the electricity prices before and after the time period change point.
Further, the generation process of the spare time length comprises:
acquiring a field gas consumption-time curve according to field gas consumption data; and starting at a set time before the time interval change point, analyzing and acquiring the using time of the gas storage amount every set period T, and acquiring the time that the gas storage amount can be used as the standby time according to the average gas consumption and the gas storage amount in the last period T.
Further, the first power saving instruction includes: and acquiring the reserve air storage capacity time length of a time point in the working time, and generating an air compressor shutdown signal when the reserve time length is more than or equal to the time length from the time point to a time period change point.
Further, the second power saving instruction includes: selecting a certain moment before the end of the working time as a set moment, acquiring the reserve time of the air storage quantity at the set moment, acquiring the air production quantity required from the set moment to the end of the working according to the data of the air storage tank, and generating an air compressor running signal.
Further, the third power-saving instruction includes: before the working time is finished, the air storage amount of a time point in the working time is obtained, then the air leakage amount in the time from the working end time to a time period changing point is obtained, then the standby time length of the air storage amount is obtained, and when the standby time length is larger than or equal to the time length from the time point to the time period changing point, an air compressor shutdown signal is generated.
Further, the fourth energy saving instruction includes: before the working time is finished, the reserve time of the air storage amount at the set moment in the working time is obtained, then the air leakage amount in the time from the working finishing time to the time changing point is obtained, the air production amount required from the set moment to the working finishing is obtained according to the data of the air storage tank, and an air compressor operation signal is generated.
Further, the fifth energy saving instruction includes: and acquiring the gas production required by the non-working time according to the gas leakage and the gas storage tank data in the non-working time, and then acquiring the time period with the lowest electricity price in the non-working time to generate an air compressor running signal.
Further, the system also comprises a data acquisition module used for acquiring basic data; the instruction execution module is used for executing the energy-saving instruction, and the storage module is used for storing the basic data and the energy-saving instruction.
Compared with the prior art, the invention has the beneficial effects that:
according to the method, the time-of-use electricity price information of a region is obtained, different energy-saving instructions are formulated according to the working time and the time-of-use electricity price information of the air compression station, the execution module receives the energy-saving instructions, then the standby time of the gas storage amount in the gas storage tank is obtained and analyzed, and the electricity prices before and after a time period change point in the time-of-use electricity price information are obtained; then through reducing the operating time of air compressor machine at high power price period, realize energy-conserving power consumption, when low power price period, supply qi to the gas holder, reduce the operating time of air compressor machine at high power price period from another angle, make things convenient for energy-conserving power consumption of air compression station.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic block diagram of the present invention.
Detailed Description
The technical solutions of the present invention will be described below clearly and completely in conjunction with the embodiments, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terminology used herein is for the purpose of describing embodiments and is not intended to be limiting and/or restrictive of the present disclosure; it should be noted that the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise; also, although the terms first, second, etc. may be used herein to describe various elements, the elements are not limited by these terms, which are only used to distinguish one element from another.
As shown in fig. 1, an electric energy management system for an air compression station includes a data acquisition module, a processor, an instruction execution module, and a storage module;
the data acquisition module is used for acquiring basic data; the basic data comprises time-of-use electricity price information, gas production data, field gas utilization data, gas storage tank data and gas storage data;
the time-of-use electricity price is also called peak-valley time-of-use electricity price, and different electricity price levels are respectively set up in a plurality of time periods of 24 hours per day, such as peak, flat, underestimation and the like according to the load condition of a power grid, and are used for peak clipping and valley filling, so that the utilization efficiency of power resources is improved. Peak electricity usage times are concentrated in the morning and evening, with flat hours generally ranging from noon to evening hours and underestimation periods generally ranging from late night to early morning;
setting 24 hours a day as a period a1, a period B, a period a2, and a period C, wherein the period a1 and the period a2 are peak periods, the period B is a usual period, and the period C is a valley period;
for ease of understanding, in the present embodiment, the peak hour setting is set to 7: 00-11: 00, 19: 00-23: 00; the usual time period is 11: 00-19: 00; the trough period was 23: 00-day 7: 00; i.e., time period a1 includes 7: 00-11: 00, period B includes 11: 00-19: 00, time period a2 includes 19: 00-23: 00, period C includes 23: 00-day 7: 00; of course, in some other embodiments, the settings are different, and different regions and seasons have different settings, which are not specifically limited herein; wherein 7: 00. 11: 00. 19: 00 and 23: 00 is a period change point; by analyzing the electricity prices before and after the time period change point and utilizing the delayed use of the gas stored in the gas storage tank, the corresponding energy-saving instruction is formulated, and the problem can be solved.
The gas production data comprises the gas production rate of the air compressor; the air compressor compresses external air and inputs the compressed air into the air storage tank; the operating power of the air compressor can be obtained by a power sensor arranged on the air compressor, the operating power of the air compressor corresponds to the gas production speed, and the gas production rate of the air compressor can be obtained through the gas production speed and the operating time of the air compressor. Therefore, the gas production rate corresponds to the operation power and the working time of the air compressor.
The data of the gas storage tank comprise the volume of the gas storage tank, the internal temperature of the gas storage tank, the internal pressure of the gas storage tank, the rated pressure of the gas storage tank, the maximum pressure, the air input, the gas storage amount and the gas output; the air inflow and the gas production are the same, the loss of the air compressor in the operation process is ignored, the air inflow in the air storage tank is directly used as the gas production, and the gas production-power and time mapping is formulated;
the pressure in the gas storage tank can be acquired according to a pressure sensor arranged in the gas storage tank, and the volume of gas in the gas storage tank, namely the gas storage amount, in the same state is acquired according to the volume of the gas storage tank and the temperature in the gas storage tank;
in actual production, a certain amount of air leakage exists at the joint of each air pipeline in a working site; the air leakage is relatively fixed;
the process of acquiring the air leakage comprises the following steps:
firstly, closing an air inlet of an air storage tank; then stopping the gas for field production; acquiring the internal pressure and the internal temperature of the gas storage tank, and acquiring a first gas storage amount; and then after a plurality of hours, acquiring the internal pressure and the internal temperature of the gas storage tank, acquiring a second gas storage amount, calculating a difference value, dividing the difference value by time, and acquiring the gas leakage amount in unit time.
It is emphasized that all the gas volumes mentioned above have been converted into gas volumes in the same state, i.e. the same temperature and the same atmospheric pressure, by conversion equations. The gases have compressibility, which varies in volume between gases at different temperatures and pressures. The volume of the gas is comparable only under the same conditions, which is done for the sake of convenience of calculation.
The processor is used for analyzing the basic data and generating an energy-saving instruction and the standby time of the gas in the gas storage tank;
the generation process of the standby duration comprises the following steps:
acquiring a field gas consumption-time curve according to field gas consumption data; and analyzing and acquiring the use time of the gas storage quantity every a set period T from the set time before the time interval change point, and acquiring the time that the gas storage quantity can be used as the spare time according to the average gas consumption and the gas storage quantity in the last period T. The on-site gas consumption is obtained by subtracting the gas leakage from the gas storage capacity, when the standby time is calculated, the normal and safe operation of the gas storage tank needs to be considered when the gas storage tank operates, and the calculation process is a common technology known by a person skilled in the art and is not described herein.
The process of generating the energy saving instruction comprises the following steps:
according to the working time and the time-of-use electricity price information of the air compression station; when a time period change point exists in the working time, acquiring the electricity price information before and after the time period change point; generating a first energy saving instruction when the electricity price before the period change point is higher than the electricity price after the period change point; and acquiring the reserve air storage capacity time length of a time point in the working time, and generating an air compressor shutdown signal when the reserve time length is more than or equal to the time length from the time point to a time period change point. When the electricity price before the time period change point is lower than the electricity price after the time period change point, generating a second energy-saving instruction, acquiring the reserve time of the gas storage capacity at the set time before the working time is finished, acquiring the gas production required from the set time to the working end according to the data of the gas storage tank, and generating an air compressor operation signal;
when no time period change point exists in the working time, acquiring the electricity price information before and after the next time period change point after the working time is ended; when the electricity price before the time period changing point is higher than the electricity price after the time period changing point, a third energy saving instruction is generated, before the working time is finished, the air storage amount of the time point in the working time is obtained, then the air leakage amount in the time period from the working end time to the time period changing point is obtained, then the standby time length of the air storage amount is obtained, and when the standby time length is more than or equal to the time length from the time point to the time period changing point, an air compressor shutdown signal is generated.
Generating a fourth energy saving instruction when the electricity price before the period change point is lower than the electricity price after the period change point; before the working time is finished, the reserve time of the air storage amount at the set moment in the working time is obtained, then the air leakage amount in the time from the working finishing time to the time changing point is obtained, the air production amount required from the set moment to the working finishing is obtained according to the data of the air storage tank, and an air compressor operation signal is generated.
Acquiring a time period change point in non-working time, generating a fifth energy-saving instruction according to the electricity prices before and after the time period change point, acquiring the gas production required by the non-working time according to the gas leakage and the gas storage tank data in the non-working time, then acquiring the time period with the lowest electricity price in the non-working time, and generating an air compressor operation signal.
In the actual production process of an enterprise, the working time is relatively fixed, and the production time of the enterprise is divided into a time period X1, a time period Y, a time period X2 and a time period Z according to certain variation of seasons. Time period X1 is a first production time, time period Y is a work break time, time period X2 is a second production time, and time period Z is a non-work time.
To facilitate understanding of the time period X1 in the present embodiment includes 8: 00-12: 00, the period Y includes 12: 00-14: 00, the time period X2 includes 14: 00-18: 00, time period Z includes 18: 00-day 8: 00.
in the actual production process, the time for producing electricity and the time-sharing electricity utilization time period are crossed.
Firstly, determining the time for entering the next time interval in the first production time X1 and the second production time X2 and recording the time interval as a time interval change point; 8 in first production time X1 in this embodiment: 00-11: 00 is the peak time period, 11: 00-12: 00 is a usual time period, and the second production time X2 is all in the usual time period, i.e., in the present embodiment, 11: 00 is a period change point; 11: the electricity prices before 00 are higher than those after. The present embodiment is set from 10: 00 standby time for starting to acquire gas in the gas storage tank every 1 minute, when the pressure of the gas in the gas storage tank is 10: 00 to 11: and when the standby time at a certain time of the period 00 is longer than that of the rest market, controlling to generate an air compressor stop signal.
The instruction execution module is used for executing an energy-saving instruction;
the instruction execution module comprises a controller of the air compressor and is used for controlling the starting, the stopping and the power of the air compressor.
And the storage module is used for storing basic data and production instructions.
The working principle of the invention is as follows: according to the invention, by analyzing the relation between the time-of-use electricity price and the production time of enterprises, the standby duration of the gas storage amount is estimated according to the existing gas consumption data, the air compressor is closed in advance between the arrival of time period change points, the running time of the air compressor in the peak time period is reduced, the air compressor is started to supplement gas to the gas storage tank in the valley of power consumption, and the running time of the air compressor in the peak time period is also reduced. In addition, in the non-production time of enterprises, the gas storage tank is kept at the lower limit position of the pressure value, so that the gas is prevented from being supplied to the gas storage tank at the peak time of power utilization at night.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is merely exemplary and illustrative of the present invention and various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the scope of the invention as defined in the following claims.
Claims (2)
1. The electric energy management system for the air compression station is characterized by comprising a processor;
the processor is used for analyzing basic data and generating an energy-saving instruction and the standby time of gas in the gas storage tank, wherein the basic data comprises time-of-use electricity price information, gas production data, field gas consumption data and gas storage tank data;
the process of generating the energy saving instruction comprises the following steps:
according to the working time and the time-of-use electricity price information of the air compression station; when a time period change point exists in the working time, acquiring the electricity price information before and after the time period change point; generating a first energy saving instruction when the electricity price before the time period changing point is higher than the electricity price after the time period changing point; generating a second energy-saving instruction when the electricity price before the period change point is lower than the electricity price after the period change point;
when no time period change point exists in the working time, acquiring the electricity price information before and after the next time period change point after the working time is ended; generating a third energy saving instruction when the electricity price before the period change point is higher than the electricity price after the period change point; generating a fourth energy saving instruction when the electricity price before the time period changing point is lower than the electricity price after the time period changing point;
acquiring a time period change point in non-working time, and generating a fifth energy-saving instruction according to the electricity prices before and after the time period change point;
the generation process of the standby duration comprises the following steps:
acquiring a field gas consumption-time curve according to field gas consumption data; starting at a set time before a time interval change point, analyzing and acquiring the use duration of the gas storage amount every set period T, and acquiring the time that the gas storage amount can be used as a spare duration according to the average gas consumption and the gas storage amount in the last period T;
the first power saving instruction includes: acquiring the reserve time of the air storage capacity at a time point in the working time, and generating an air compressor shutdown signal when the reserve time is longer than or equal to the time from the time point to a time change point;
the second power saving instruction includes: selecting a certain moment before the end of the working time as a set moment, acquiring the reserve time of the gas storage capacity at the set moment, acquiring the gas production required from the set moment to the end of the working according to the data of the gas storage tank, and generating an air compressor operation signal;
the third enabling instruction comprises: before the working time is finished, acquiring the air storage amount of a time point in the working time, then acquiring the air leakage amount in the time from the working end time to a time period changing point, then acquiring the standby time length of the air storage amount, and generating an air compressor shutdown signal when the standby time length is greater than or equal to the time length from the time point to the time period changing point;
the fourth power saving instruction includes: before the working time is finished, acquiring the reserve time of the gas storage amount at a set moment in the working time, then acquiring the gas leakage amount in the time from the working finishing time to the time changing point, acquiring the gas production amount required by the set moment to the working finishing according to the data of the gas storage tank, and generating an air compressor operation signal;
the fifth power saving instruction includes: and acquiring the gas production required by the non-working time according to the gas leakage and the gas storage tank data in the non-working time, and then acquiring the time period with the lowest electricity price in the non-working time to generate an air compressor operation signal.
2. The power management system for air compressor station according to claim 1,
the system also comprises a data acquisition module used for acquiring basic data; the instruction execution module is used for executing the energy-saving instruction, and the storage module is used for storing the basic data and the energy-saving instruction.
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| CN113250772A (en) * | 2021-06-08 | 2021-08-13 | 中国科学院理化技术研究所 | Comprehensive energy system optimization method and system based on energy storage |
| CN113530793A (en) * | 2021-08-05 | 2021-10-22 | 广东鑫钻节能科技股份有限公司 | Intelligent adjusting system for air compression station |
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