CN108644980B - Power consumption calculation method and system of subway station ventilation air-conditioning system and storage medium - Google Patents
Power consumption calculation method and system of subway station ventilation air-conditioning system and storage medium Download PDFInfo
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- CN108644980B CN108644980B CN201810414010.8A CN201810414010A CN108644980B CN 108644980 B CN108644980 B CN 108644980B CN 201810414010 A CN201810414010 A CN 201810414010A CN 108644980 B CN108644980 B CN 108644980B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/46—Improving electric energy efficiency or saving
- F24F11/47—Responding to energy costs
Abstract
The invention discloses a power consumption calculation method of a subway station ventilation air-conditioning system, which comprises the steps of obtaining the indoor temperature, the outdoor temperature, the passenger flow, the air leakage rate and the fresh air rate of a subway station at a plurality of preset moments, and detecting the power consumption of the ventilation air-conditioning system at each preset moment; taking the indoor temperature, the outdoor temperature, the passenger flow volume, the air leakage volume, the fresh air volume and the power consumption of the ventilation and air-conditioning system at the same moment as a group of data substituted into the fitting equation, and determining a fitting coefficient of the fitting equation through regression fitting according to each group of data substituted into the fitting equation; and obtaining the indoor temperature, the outdoor temperature, the passenger flow, the air leakage quantity and the fresh air quantity of the subway station at the first moment, and calculating the power consumption of the ventilation and air-conditioning system at the first moment through a fitting equation after the fitting coefficient is determined. The scheme of the invention accurately calculates the power consumption of the ventilation and air-conditioning system of the subway station. The invention also provides a power consumption calculation system and a storage medium of the ventilation and air-conditioning system of the subway station with corresponding effects.
Description
Technical Field
The invention relates to the technical field of system design of subways, in particular to a power consumption calculation method, a power consumption calculation system and a storage medium of a ventilation and air-conditioning system of a subway station.
Background
With the continuous development of economy and the continuous acceleration of urban modern construction, more and more people are rushed into cities, in order to increase the bearing capacity of the cities, urban rail transit is an important development direction in the future, and the development of subways becomes a necessary trend. The subway operation can generate great power consumption, and the annual power consumption of a subway system is up to 10000 ten thousand kW/h every 20 kilometers of subway rail traffic lines. The proportion of the power consumption of the ventilation and air-conditioning system of the subway in the total power consumption is about 35-40%, which is second to the power consumption of locomotive electric traction. Therefore, under the large background of national building energy saving, it becomes important to research the energy saving method and approach of the ventilation and air conditioning system of the subway, and one of the prerequisites for researching the energy saving method of the ventilation and air conditioning system of the subway is to accurately calculate the power consumption of the ventilation and air conditioning system of the subway, for example, to perform feed-forward control on the ventilation and air conditioning system of the subway through the calculated power consumption to realize energy saving.
In the prior art, the power consumption of the subway ventilation air-conditioning system is usually calculated through indoor and outdoor heat conduction, passenger flow and indoor and outdoor ventilation, but the variable is too single, namely other factors can influence the power consumption of the subway ventilation control system, so that the calculated power consumption of the subway ventilation air-conditioning system is inaccurate, and adverse effects can be caused on subsequent air-conditioning control, such as energy waste and the like.
In summary, how to accurately calculate the power consumption of the ventilation and air-conditioning system of the subway station is a technical problem that needs to be solved urgently by those skilled in the art at present.
Disclosure of Invention
The invention aims to provide a method and a system for calculating power consumption of a ventilation and air-conditioning system of a subway station and a storage medium, so as to accurately calculate the power consumption of the ventilation and air-conditioning system of the subway station.
In order to solve the technical problems, the invention provides the following technical scheme:
a power consumption calculation method of a ventilation and air-conditioning system of a subway station comprises the following steps:
the method comprises the steps of obtaining indoor temperature, outdoor temperature, passenger flow, air leakage rate and fresh air rate of a subway station at a plurality of preset moments, and detecting power consumption of a ventilation air-conditioning system at each preset moment;
taking the indoor temperature, the outdoor temperature, the passenger flow volume, the air leakage volume, the fresh air volume and the power consumption of the ventilation and air-conditioning system at the same moment as a group of data substituted into a fitting equation, and determining a fitting coefficient of the fitting equation through regression fitting according to each group of data substituted into the fitting equation;
and obtaining the indoor temperature, the outdoor temperature, the passenger flow volume, the air leakage volume and the fresh air volume of the subway station at a first moment, and calculating the power consumption of the ventilation and air conditioning system at the first moment through a fitting equation after the fitting coefficient is determined, wherein the first moment is any one moment except for a plurality of preset moments.
Preferably, the fitting equation is:
wherein Q (t) is the ventilation air-conditioning systemSystem power consumption, n (T) is the passenger flow volume, Tout(T) is the outdoor temperature, Tin(t) is the room temperature, VfreFor the fresh air quantity, VleakFor the leakage of air, cpFor heat removal of personnel, RexchHeat resistance for indoor and outdoor convection heat transfer, cairIs the volumetric heat capacity of air, k1To k is4Is the fitting coefficient.
Preferably, the acquiring of the air leakage rate of the subway station at a plurality of preset moments includes:
and aiming at each preset moment, acquiring the air leakage rate of the subway station at the moment according to the simulation algorithm and the train timetable.
Preferably, the acquiring the air leakage rate of the subway station at the moment according to the simulation algorithm and the train timetable includes:
and acquiring the air leakage rate of the subway station at the moment according to the Computational Fluid Dynamics (CFD) simulation algorithm and the train timetable.
Preferably, the acquiring of the fresh air volume of the subway station at the preset multiple moments includes:
and aiming at each preset moment, determining the fresh air volume required by the passenger flow corresponding to the passenger flow at the moment according to the passenger flow at the moment, and determining the maximum value of the product of the total system air volume at the moment and a preset proportion, the fresh air volume required by the passenger flow at the moment and the air leakage volume at the moment as the fresh air volume at the moment.
Preferably, the preset proportion is 15%.
Preferably, after calculating the power consumption of the ventilation air-conditioning system at the first time by the fitting equation after determining the fitting coefficient, the method further includes:
acquiring the design power consumption of a ventilation air-conditioning system of the subway station;
judging whether the calculated power consumption of the ventilation air-conditioning system at the first moment is larger than the designed power consumption;
if so, adjusting the actual power consumption of the ventilation and air-conditioning system of the subway station to a preset first power consumption, wherein the first power consumption is higher than the calculated power consumption of the ventilation and air-conditioning system at the first moment;
if not, adjusting the actual power consumption of the ventilation and air-conditioning system of the subway station to a preset second power consumption, wherein the second power consumption is lower than the calculated power consumption of the ventilation and air-conditioning system at the first moment.
A power consumption calculation system for a ventilation and air conditioning system for a subway station, the system comprising:
the system comprises a data acquisition module, a data processing module and a control module, wherein the data acquisition module is used for acquiring the indoor temperature, the outdoor temperature, the passenger flow volume, the air leakage volume and the fresh air volume of a subway station at a plurality of preset moments, and detecting the power consumption of a ventilation air-conditioning system at each preset moment;
the fitting coefficient determining module is used for substituting the indoor temperature, the outdoor temperature, the passenger flow volume, the air leakage volume, the fresh air volume and the power consumption of the ventilation and air conditioning system at the same moment into a set of data in a fitting equation, and determining a fitting coefficient of the fitting equation through regression fitting according to each set of data substituted in the fitting equation;
and the real-time power consumption calculation module is used for acquiring the indoor temperature, the outdoor temperature, the passenger flow volume, the air leakage volume and the fresh air volume of the subway station at a first moment, and calculating the power consumption of the ventilation and air conditioning system at the first moment through a fitting equation after the fitting coefficient is determined, wherein the first moment is any other moment except for a plurality of preset moments.
Preferably, the method further comprises the following steps:
the design power consumption obtaining module is used for obtaining the design power consumption of the ventilation and air-conditioning system of the subway station after the real-time power consumption calculating module calculates the power consumption of the ventilation and air-conditioning system at the first moment through the fitting equation after the fitting coefficient is determined;
the judging module is used for judging whether the calculated power consumption of the ventilation air-conditioning system at the first moment is larger than the designed power consumption, if so, the first power consumption adjusting module is executed, and otherwise, the second power consumption adjusting module is executed;
the first power consumption adjusting module is used for adjusting the power consumption of the ventilation and air-conditioning system of the subway station to a preset first power consumption, wherein the first power consumption is higher than the calculated power consumption of the ventilation and air-conditioning system at the first moment;
and the second power consumption adjusting module is used for adjusting the power consumption of the ventilation and air-conditioning system of the subway station to be preset second power consumption, wherein the second power consumption is lower than the calculated power consumption of the ventilation and air-conditioning system at the first moment.
A computer-readable storage medium, on which a ventilation and air-conditioning system power consumption calculation program is stored, which, when executed by a processor, implements the steps of the method for calculating the power consumption of a ventilation and air-conditioning system at a subway station.
The technical scheme provided by the embodiment of the invention comprises the following steps: the method comprises the steps of obtaining indoor temperature, outdoor temperature, passenger flow, air leakage rate and fresh air rate of a subway station at a plurality of preset moments, and detecting power consumption of a ventilation air-conditioning system at each preset moment; taking the indoor temperature, the outdoor temperature, the passenger flow volume, the air leakage volume, the fresh air volume and the power consumption of the ventilation and air-conditioning system at the same moment as a group of data substituted into the fitting equation, and determining a fitting coefficient of the fitting equation through regression fitting according to each group of data substituted into the fitting equation; the method comprises the steps of obtaining the indoor temperature, the outdoor temperature, the passenger flow, the air leakage rate and the fresh air rate of the subway station at a first moment, and calculating the power consumption of the ventilation and air-conditioning system at the first moment through a fitting equation after fitting coefficients are determined, wherein the first moment is any one moment except for a plurality of preset moments.
When the influence factors of the power consumption of the ventilation and air-conditioning system are considered, not only the indoor temperature, the outdoor temperature, the passenger flow and the fresh air volume are considered, but also the air leakage volume is considered, namely, the indoor temperature, the outdoor temperature, the passenger flow, the fresh air volume and the air leakage volume are all taken as the factors influencing the power consumption of the ventilation and air-conditioning system and are substituted into a fitting equation, after the preset power consumption of the ventilation and air-conditioning system at multiple moments is obtained, the indoor temperature, the outdoor temperature, the passenger flow, the fresh air volume, the air leakage volume and the power consumption of the ventilation and air-conditioning system at the same moment can be taken as a group of data, each group of data is substituted into the fitting equation, and the fitting coefficient of. After the fitting coefficients are determined, for any time except for a plurality of preset times, the indoor temperature, the outdoor temperature, the passenger flow, the air leakage quantity and the fresh air quantity of the subway station at the time are obtained and substituted into the fitting equation with the fitting coefficients determined, and then the power consumption of the ventilation air-conditioning system at the time can be determined. According to the scheme, when the power consumption of the ventilation air-conditioning system of the subway station is calculated, the air leakage amount is used as one of the influence factors, so that the calculated power consumption of the ventilation air-conditioning system is more accurate, and the control of the air-conditioning system is more facilitated.
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 flowchart of an embodiment of a power consumption calculation method of a ventilation and air-conditioning system of a subway station according to the present invention;
fig. 2 is a schematic structural diagram of a power consumption calculation system of a ventilation and air-conditioning system of a subway station in the invention.
Detailed Description
The core of the invention is to provide a power consumption calculation method of the ventilation and air-conditioning system of the subway station, which accurately calculates the power consumption of the ventilation and air-conditioning system of the subway station.
In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. 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.
Referring to fig. 1, fig. 1 is a flowchart illustrating an implementation of a power consumption calculation method of a ventilation and air-conditioning system of a subway station, the method including the following steps:
s101: the method comprises the steps of obtaining indoor temperature, outdoor temperature, passenger flow, air leakage quantity and fresh air quantity of the subway station at a plurality of preset moments, and detecting power consumption of a ventilation air-conditioning system at each preset moment.
The number of the preset moments and the distribution conditions of the moments can be set and adjusted according to actual needs, and the implementation of the method is not influenced. For example, in the process from train arrival to train departure, the preset moments can be relatively intensive, and during the peak hours of work, the preset moments can be relatively intensive, and for example, the preset moments can be distributed to a certain extent all day long, and the number of the preset moments can be set to be large, so that the fitting coefficient calculated in the subsequent steps is more accurate.
The indoor temperature and the outdoor temperature of the subway station at a plurality of preset moments can be detected through the temperature sensors, and then the data are obtained through the corresponding processors. The passenger flow can be obtained from the system data of the subway station, for example, the passenger flow at a certain moment can be obtained by a recorder at the entrance and exit gate of the subway station. Of course, the amount of traffic at a certain time may be determined by the number of people entering and leaving the station over a period of time, i.e. by the average value over a period of time.
The fresh air volume refers to the air volume entering the indoor space from the outside, and specifically, in the application, the fresh air volume is the air volume entering the subway station from the outside of the station. The fresh air volume can be determined according to factors such as the air volume of the system, the passenger flow volume and the like. For example, when the passenger flow volume is high, the passenger flow volume becomes a main factor affecting the fresh air volume, and the fresh air volume corresponding to the passenger flow volume may be determined according to a preset correspondence relationship.
The air leakage rate comprises the air quantity of the platform entering the tunnel and the air quantity of the tunnel entering the platform, and the air quantity of the tunnel entering the platform is smaller and usually only accounts for 5-7% of the air quantity of the platform entering the tunnel, so that the air quantity of the platform entering the tunnel can be considered only. When the air leakage rate is obtained, the air leakage rate can be detected in real time on site, or a simulation algorithm and other modes can be adopted, and the specific mode can be set and adjusted according to actual needs without influencing the implementation of the invention.
The power consumption of the ventilation and air-conditioning system at each preset moment is detected, and specifically, the power consumption of the ventilation and air-conditioning system at a certain moment can be obtained by detecting corresponding circuit data of the ventilation and air-conditioning system. It should be noted that the power consumption of the ventilation and air-conditioning system can be obtained through circuit data, but such a detection manner is usually complex and is not easy to perform continuous tracking, and for the control of the air-conditioning ventilation system, it is necessary to obtain the power consumption of the air-conditioning ventilation system in real time to perform corresponding adjustment, such as feed-forward adjustment, so that in a long term, the power consumption of the ventilation and air-conditioning system needs to be calculated according to data such as indoor and outdoor temperatures, passenger flow rates, and the like, and for a preset time, that is, in step S101 of the present application, the power consumption of the ventilation and air-conditioning system of the subway at each preset time can be selected to be detected through the.
S102: and taking the indoor temperature, the outdoor temperature, the passenger flow volume, the air leakage volume, the fresh air volume and the power consumption of the ventilation and air-conditioning system at the same moment as a group of data substituted into the fitting equation, and determining the fitting coefficient of the fitting equation through regression fitting according to each group of data substituted into the fitting equation.
For example, the preset time is 7 times from a to G, the indoor temperature, the outdoor temperature, the passenger flow volume, the air leakage volume, the fresh air volume, and the power consumption of the ventilation and air-conditioning system at time a of the subway station are taken as a set of data, and 7 sets of data are total at 7 times. And substituting each group of data into a fitting equation, and determining a fitting coefficient of the fitting equation in a regression fitting mode. The indoor temperature, the outdoor temperature, the passenger flow volume, the air leakage volume and the fresh air volume can be regarded as independent variables in a fitting equation, the power consumption of the ventilation and air-conditioning system is regarded as dependent variables in the fitting equation, each group of data is substituted into the fitting equation, the fitting coefficient of the fitting equation is solved, and the corresponding relation between the dependent variables and the independent variables is determined.
S103: the method comprises the steps of obtaining the indoor temperature, the outdoor temperature, the passenger flow, the air leakage rate and the fresh air rate of the subway station at a first moment, and calculating the power consumption of the ventilation and air-conditioning system at the first moment through a fitting equation after fitting coefficients are determined, wherein the first moment is any one moment except for a plurality of preset moments.
After the fitting coefficient in the preset fitting equation is determined, the indoor temperature, the outdoor temperature, the passenger flow volume, the air leakage volume and the fresh air volume at the first moment of the subway station are obtained and substituted into the fitting equation with the determined fitting coefficient, so that the power consumption of the ventilation and air conditioning system at the first moment, namely the corresponding dependent variable corresponding to the independent variable at the first moment can be calculated, and the first moment can be any other moment except the preset moment. And calculating the power consumption of the ventilation air-conditioning system at the first moment, and being beneficial to controlling the ventilation system of the air conditioner by using the calculated power consumption.
The method provided by the embodiment of the invention comprises the following steps: the method comprises the steps of obtaining indoor temperature, outdoor temperature, passenger flow, air leakage rate and fresh air rate of a subway station at a plurality of preset moments, and detecting power consumption of a ventilation air-conditioning system at each preset moment; taking the indoor temperature, the outdoor temperature, the passenger flow volume, the air leakage volume, the fresh air volume and the power consumption of the ventilation and air-conditioning system at the same moment as a group of data substituted into the fitting equation, and determining a fitting coefficient of the fitting equation through regression fitting according to each group of data substituted into the fitting equation; the method comprises the steps of obtaining the indoor temperature, the outdoor temperature, the passenger flow, the air leakage rate and the fresh air rate of the subway station at a first moment, and calculating the power consumption of the ventilation and air-conditioning system at the first moment through a fitting equation after fitting coefficients are determined, wherein the first moment is any one moment except for a plurality of preset moments.
When the influence factors of the power consumption of the ventilation and air-conditioning system are considered, not only the indoor temperature, the outdoor temperature, the passenger flow and the fresh air volume are considered, but also the air leakage volume is considered, namely, the indoor temperature, the outdoor temperature, the passenger flow, the fresh air volume and the air leakage volume are all taken as the factors influencing the power consumption of the ventilation and air-conditioning system and are substituted into a fitting equation, after the preset power consumption of the ventilation and air-conditioning system at multiple moments is obtained, the indoor temperature, the outdoor temperature, the passenger flow, the fresh air volume, the air leakage volume and the power consumption of the ventilation and air-conditioning system at the same moment can be taken as a group of data, each group of data is substituted into the fitting equation, and the fitting coefficient of. After the fitting coefficients are determined, for any time except for a plurality of preset times, the indoor temperature, the outdoor temperature, the passenger flow, the air leakage quantity and the fresh air quantity of the subway station at the time are obtained and substituted into the fitting equation with the fitting coefficients determined, and then the power consumption of the ventilation air-conditioning system at the time can be determined. According to the scheme, when the power consumption of the ventilation air-conditioning system of the subway station is calculated, the air leakage amount is used as one of the influence factors, so that the calculated power consumption of the ventilation air-conditioning system is more accurate, and the control of the air-conditioning system is more facilitated.
In one embodiment of the present invention, the fitting equation is:
in the fitting equation of this embodiment, q (T) is the power consumption of the ventilation and air-conditioning system, and the unit may be kw, n (T) is the passenger flow volume, and the unit may be person/hour, Tout(T) is the outdoor temperature, Tin(t) is the indoor temperature, the unit of indoor and outdoor temperature can be DEG C, VfreFresh air volume VleakThe unit of the fresh air volume and the air leakage volume can be m3，cpFor heat dissipation of people, the unit can be kw/person/hour, RexchThe unit of the heat resistance of indoor and outdoor convection heat transfer can be kw/DEG C, cairThe unit is the volumetric heat capacity of air and can be kw/(m)3.℃)，k1To k is4Are fitting coefficients. The heat dissipation capacity of personnel, the heat resistance of indoor and outdoor convective heat transfer and the volumetric heat capacity of air can be checked, and certainly, certain adjustment can be performed in specific scenes, for example, certain adjustment can be performed according to different regionsAnd do not affect the practice of the invention.
In a specific embodiment of the present invention, the acquiring of the air leakage rate of the subway station at the preset multiple times in step S101 includes:
and aiming at each preset moment, acquiring the air leakage rate of the subway station at the moment according to the simulation algorithm and the train timetable.
Considering that when the train is far away from the subway station, that is, when the station is in the process of waiting for the train to come, the air leakage rate is small, the air leakage rate at this time can be determined to be 0 or other preset numerical values, and when the train is in the process of entering the station, the air leakage rate can be obtained according to a simulation algorithm, for example, in the specific implementation, the air leakage rate in the process of entering the station can be determined through a Computational Fluid Dynamics (CFD) simulation algorithm. Specifically, the process of entering the train can be simulated by three stages, wherein the first stage is the process of the train from the piston entering the train to the complete stop, the second stage is the process of the train stopping at the station, and the third stage is the process of the train starting to the piston leaving the train. Of course, the specific setting of the relevant parameters in the CFD simulation algorithm may be adjusted according to actual conditions, for example, according to the corresponding data of the subway station at a specific implementation site, such as the type of the screen door.
In a specific embodiment of the present invention, the acquiring of the fresh air volume of the subway station at a plurality of preset times in step S101 includes:
and determining the fresh air volume required by the passenger flow corresponding to the passenger flow at the moment according to the passenger flow at the moment, and determining the maximum value of the product of the total system air volume at the moment and the preset proportion, the fresh air volume required by the passenger flow at the moment and the air leakage volume at the moment as the fresh air volume at the moment.
Generally, the higher the passenger flow volume is, the higher the fresh air volume required by the corresponding passenger flow volume is, and the specific corresponding relationship can be set and adjusted according to the actual situation, without affecting the implementation of the present invention. For example, in the case of the same passenger flow volume, the fresh air volume required for the corresponding passenger flow can be appropriately increased in hot summer. The total air volume of the system can be obtained by corresponding detection equipment or an air conditioning system, the preset proportion is set according to actual conditions, and the preset proportion can be set to be 15% generally according to experience. In this embodiment, it is considered that the influence factors of the fresh air volume are mainly the passenger flow volume, the total system air volume and the air leakage volume, and one of the factors usually plays a leading role at different times, for example, when the passenger flow volume is large, the fresh air volume is led by the passenger flow volume, and when a train enters the station, the fresh air volume is led by the air leakage volume.
In an embodiment of the present invention, after step S103, the following steps may be further included:
acquiring the design power consumption of a ventilation air-conditioning system of a subway station;
judging whether the calculated power consumption of the ventilation air-conditioning system at the first moment is larger than the designed power consumption;
if so, adjusting the actual power consumption of the ventilation and air-conditioning system of the subway station to a preset first power consumption, wherein the first power consumption is higher than the calculated power consumption of the ventilation and air-conditioning system at the first moment;
and if not, adjusting the actual power consumption of the ventilation and air-conditioning system of the subway station to a preset second power consumption, wherein the second power consumption is lower than the calculated power consumption of the ventilation and air-conditioning system at the first moment.
The steps are combined for convenience of description. After the power consumption of the ventilation and air-conditioning system at the first moment is calculated, the design power consumption of the ventilation and air-conditioning system at the subway station can be obtained. The design power consumption generally corresponds to the design temperature, for example, the design temperature of a ventilation and air conditioning system of a subway station can be queried, and the design power consumption corresponding to the design temperature can be obtained according to the design temperature. When the calculated power consumption of the ventilation and air-conditioning system at the first moment is larger than the design power consumption, the actual power consumption of the ventilation and air-conditioning system at the subway station is adjusted to be the preset first power consumption, and in short, the power consumption of the ventilation and air-conditioning system at the subway station is improved, specifically, the power consumption is improved to be the preset first power consumption. The power consumption of the ventilation air-conditioning system at the first moment is greater than the design power consumption, which indicates that the temperature in the station is higher at the moment, for example, the design temperature is 27 ℃, the actual temperature at the first moment is 30 ℃, and the reason that the temperature is high can be caused by factors such as the increase of the passenger flow volume. If the consumption that maintains the first moment is unchangeable, natural temperature can reduce gradually, and improves the consumption to first consumption, and obviously, the temperature drops sooner, reaches design temperature sooner promptly, consequently can make the crowd in the station more comfortable, improves passenger's experience and feels. Correspondingly, when the power consumption of the ventilation and air-conditioning system at the first moment is less than the design power consumption, the actual power consumption of the ventilation and air-conditioning system at the subway station can be adjusted to be the preset second power consumption, wherein the second power consumption is lower than the calculated power consumption of the ventilation and air-conditioning system at the first moment. The power consumption of the ventilation air-conditioning system at the first moment is less than the design power consumption, which shows that the temperature of the station at the moment is lower, for example, the design temperature is 27 ℃, the actual temperature at the first moment is 25 ℃, the reason of low temperature can be caused by factors such as the reduction of passenger flow volume, the power consumption at the first moment is lower than the design power consumption, the temperature can be gradually increased, in the scheme of the application, the power consumption is reduced to the second power consumption, obviously, the temperature is increased faster, the experience of passengers is improved, and the power consumption is reduced, so that the energy conservation is facilitated.
Corresponding to the above method embodiment, an embodiment of the present invention further provides a power consumption calculation system of a ventilation and air-conditioning system for a subway station, where the power consumption calculation system of the ventilation and air-conditioning system for the subway station described below and the power consumption calculation system method of the ventilation and air-conditioning system for the subway station described above are referred to in correspondence, as shown in fig. 2, and are a schematic structural diagram of the power consumption calculation system of the ventilation and air-conditioning system for the subway station in the present invention, and the system includes the following modules:
the data acquisition module 20 is configured to acquire an indoor temperature, an outdoor temperature, a passenger flow rate, an air leakage rate, and a fresh air rate of the subway station at a plurality of preset times, and detect power consumption of the ventilation and air-conditioning system at each preset time;
the fitting coefficient determining module 21 is configured to use the indoor temperature, the outdoor temperature, the passenger flow volume, the air leakage volume, the fresh air volume, and the power consumption of the ventilation and air-conditioning system at the same time as a set of data substituted into the fitting equation, and determine a fitting coefficient of the fitting equation through regression fitting according to each set of data substituted into the fitting equation;
and the real-time power consumption calculation module 22 is configured to obtain an indoor temperature, an outdoor temperature, a passenger flow volume, an air leakage volume, and a fresh air volume of the subway station at the first time, and calculate the power consumption of the ventilation and air-conditioning system at the first time through a fitting equation after the fitting coefficients are determined, where the first time is any one of other times except for a plurality of preset times.
In a specific embodiment of the present invention, the process of acquiring the air leakage rate of the subway station at a plurality of preset times by the data acquisition module 20 specifically includes:
and aiming at each preset moment, acquiring the air leakage rate of the subway station at the moment according to the simulation algorithm and the train timetable.
In a specific embodiment of the present invention, the process of acquiring, by the data acquisition module 20, the air leakage rate of the subway station at the time according to the simulation algorithm and the train schedule specifically is as follows:
and acquiring the air leakage rate of the subway station at the moment according to the Computational Fluid Dynamics (CFD) simulation algorithm and the train timetable.
In a specific embodiment of the present invention, the process of acquiring the fresh air volume of the subway station at a plurality of preset times by the data acquisition module 20 specifically includes:
and determining the fresh air volume required by the passenger flow corresponding to the passenger flow at the moment according to the passenger flow at the moment, and determining the maximum value of the product of the total system air volume at the moment and the preset proportion, the fresh air volume required by the passenger flow at the moment and the air leakage volume at the moment as the fresh air volume at the moment.
In one embodiment of the present invention, the method further comprises:
the design power consumption obtaining module is used for obtaining the design power consumption of the ventilation and air-conditioning system of the subway station after the real-time power consumption calculating module 22 calculates the power consumption of the ventilation and air-conditioning system at the first moment through the fitting equation after the fitting coefficient is determined;
the judging module is used for judging whether the calculated power consumption of the ventilation air-conditioning system at the first moment is larger than the designed power consumption, if so, the first power consumption adjusting module is executed, and otherwise, the second power consumption adjusting module is executed;
the first power consumption adjusting module is used for adjusting the power consumption of the ventilation and air-conditioning system of the subway station to be preset first power consumption, wherein the first power consumption is higher than the calculated power consumption of the ventilation and air-conditioning system at the first moment;
and the second power consumption adjusting module is used for adjusting the power consumption of the ventilation and air-conditioning system of the subway station to be preset second power consumption, wherein the second power consumption is lower than the calculated power consumption of the ventilation and air-conditioning system at the first moment.
Corresponding to the above method and system embodiments, the present invention further provides a computer-readable storage medium, where a power consumption calculation program of a ventilation and air-conditioning system is stored on the computer-readable storage medium, and when the power consumption calculation program of the ventilation and air-conditioning system is executed by a processor, the steps of the power consumption calculation method of the ventilation and air-conditioning system at a subway station in any of the above embodiments are implemented, and description of the steps is not repeated here.
The embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same or similar parts among the embodiments are referred to each other. For the system disclosed by the embodiment, the description is relatively simple because the system corresponds to the method disclosed by the embodiment, and the relevant points can be referred to the method part for description.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention. The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in Random Access Memory (RAM), memory, Read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
The principle and the implementation of the present invention are explained in the present application by using specific examples, and the above description of the embodiments is only used to help understanding the technical solution and the core idea of the present invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (8)
1. A power consumption calculation method of a ventilation air-conditioning system of a subway station is characterized by comprising the following steps:
the method comprises the steps of obtaining indoor temperature, outdoor temperature, passenger flow, air leakage rate and fresh air rate of a subway station at a plurality of preset moments, and detecting power consumption of a ventilation air-conditioning system at each preset moment;
taking the indoor temperature, the outdoor temperature, the passenger flow volume, the air leakage volume, the fresh air volume and the power consumption of the ventilation and air-conditioning system at the same moment as a group of data substituted into a fitting equation, and determining a fitting coefficient of the fitting equation through regression fitting according to each group of data substituted into the fitting equation;
the method comprises the steps of obtaining the indoor temperature, the outdoor temperature, the passenger flow, the air leakage rate and the fresh air rate of the subway station at a first moment, and calculating the power consumption of the ventilation and air conditioning system at the first moment through a fitting equation after the fitting coefficient is determined, wherein the first moment is any one moment except for a plurality of preset moments;
after the calculating the power consumption of the ventilation and air-conditioning system at the first moment through the fitting equation after the determining the fitting coefficient, the method further comprises the following steps:
acquiring the design power consumption of a ventilation air-conditioning system of the subway station;
judging whether the calculated power consumption of the ventilation air-conditioning system at the first moment is larger than the designed power consumption;
if so, adjusting the actual power consumption of the ventilation and air-conditioning system of the subway station to a preset first power consumption, wherein the first power consumption is higher than the calculated power consumption of the ventilation and air-conditioning system at the first moment;
if not, adjusting the actual power consumption of the ventilation and air-conditioning system of the subway station to a preset second power consumption, wherein the second power consumption is lower than the calculated power consumption of the ventilation and air-conditioning system at the first moment.
2. The power consumption calculation method of the subway station ventilation and air-conditioning system as claimed in claim 1, wherein said fitting equation is:
wherein Q (T) is the power consumption of the ventilation air-conditioning system, n (T) is the passenger flow volume, Tout(T) is the outdoor temperature, Tin(t) is the room temperature, VfreFor the fresh air quantity, VleakFor the leakage of air, cpFor heat removal of personnel, RexchHeat resistance for indoor and outdoor convection heat transfer, cairIs the volumetric heat capacity of air, k1To k is4Is the fitting coefficient.
3. The power consumption calculation method of the subway station ventilation and air conditioning system as claimed in claim 1, wherein said obtaining the air leakage rate of the subway station at a plurality of preset moments comprises:
and aiming at each preset moment, acquiring the air leakage rate of the subway station at the moment according to the simulation algorithm and the train timetable.
4. The power consumption calculation method of the subway station ventilation and air conditioning system as claimed in claim 3, wherein said obtaining the air leakage rate of the subway station at that moment according to the simulation algorithm and the train schedule comprises:
and acquiring the air leakage rate of the subway station at the moment according to the Computational Fluid Dynamics (CFD) simulation algorithm and the train timetable.
5. The power consumption calculation method of the subway station ventilation and air conditioning system as claimed in claim 1, wherein said obtaining the fresh air volume of the subway station at a plurality of preset moments comprises:
and aiming at each preset moment, determining the fresh air volume required by the passenger flow corresponding to the passenger flow at the moment according to the passenger flow at the moment, and determining the maximum value of the product of the total system air volume at the moment and a preset proportion, the fresh air volume required by the passenger flow at the moment and the air leakage volume at the moment as the fresh air volume at the moment.
6. The method for calculating the power consumption of the ventilation and air-conditioning system for the subway station as claimed in claim 5, wherein said preset proportion is 15%.
7. A power consumption calculation system of a ventilation and air-conditioning system of a subway station is characterized by comprising:
the system comprises a data acquisition module, a data processing module and a control module, wherein the data acquisition module is used for acquiring the indoor temperature, the outdoor temperature, the passenger flow volume, the air leakage volume and the fresh air volume of a subway station at a plurality of preset moments, and detecting the power consumption of a ventilation air-conditioning system at each preset moment;
the fitting coefficient determining module is used for substituting the indoor temperature, the outdoor temperature, the passenger flow volume, the air leakage volume, the fresh air volume and the power consumption of the ventilation and air conditioning system at the same moment into a set of data in a fitting equation, and determining a fitting coefficient of the fitting equation through regression fitting according to each set of data substituted in the fitting equation;
the real-time power consumption calculation module is used for acquiring the indoor temperature, the outdoor temperature, the passenger flow volume, the air leakage volume and the fresh air volume of the subway station at a first moment, and calculating the power consumption of the ventilation and air conditioning system at the first moment through a fitting equation after the fitting coefficient is determined, wherein the first moment is any one moment except for a plurality of preset moments;
further comprising:
the design power consumption obtaining module is used for obtaining the design power consumption of the ventilation and air-conditioning system of the subway station after the real-time power consumption calculating module calculates the power consumption of the ventilation and air-conditioning system at the first moment through the fitting equation after the fitting coefficient is determined;
the judging module is used for judging whether the calculated power consumption of the ventilation air-conditioning system at the first moment is larger than the designed power consumption, if so, the first power consumption adjusting module is executed, and otherwise, the second power consumption adjusting module is executed;
the first power consumption adjusting module is used for adjusting the power consumption of the ventilation and air-conditioning system of the subway station to a preset first power consumption, wherein the first power consumption is higher than the calculated power consumption of the ventilation and air-conditioning system at the first moment;
and the second power consumption adjusting module is used for adjusting the power consumption of the ventilation and air-conditioning system of the subway station to be preset second power consumption, wherein the second power consumption is lower than the calculated power consumption of the ventilation and air-conditioning system at the first moment.
8. A computer-readable storage medium, wherein the computer-readable storage medium has a ventilation and air-conditioning system power consumption calculation program stored thereon, and the ventilation and air-conditioning system power consumption calculation program, when executed by a processor, implements the steps of the method for calculating power consumption of a ventilation and air-conditioning system for a subway station as claimed in any one of claims 1 to 6.
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| CN111027181B (en) * | 2019-11-19 | 2022-11-29 | 广西电网有限责任公司 | Method for evaluating energy consumption of central air conditioner cold water host based on dynamic energy efficiency parameters |
| CN111779526A (en) * | 2020-06-10 | 2020-10-16 | 中铁第五勘察设计院集团有限公司 | Air supply calculation method and device, air supply method, terminal and storage medium |
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| KR101872228B1 (en) * | 2016-03-02 | 2018-06-28 | 경희대학교 산학협력단 | Control method for ventilation system of subway station |
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