CN115293514A - Method and system for controlling regional energy supply and storage medium - Google Patents
Method and system for controlling regional energy supply and storage medium Download PDFInfo
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Abstract
The application discloses a control method, a system and a storage medium for regional energy supply, which are applied to the technical supply field of regional energy, and comprise the following steps: calculating to obtain the working lift range of a supply device in the regional energy supply station according to a pipe network calculation model corresponding to the regional energy supply station; obtaining a supply model selection parameter according to a preset supply device characteristic curve set and the working lift range; predicting operating parameters of the supply device according to the energy flow and the supply selection parameters of a plurality of users; a plurality of the users are all supplied with energy flow by the regional energy supply station; calibrating the supply device according to the operating parameters. The regional energy supply control method can effectively simplify the control of regional energy.
Description
Technical Field
The present application relates to the field of regional energy supply technologies, and in particular, to a method, a system, and a storage medium for controlling regional energy supply.
Background
The current regional energy supply system generally conveys energy from a fixed station to each user through an external pipe network to complete energy supply, and is characterized in that the number of service plots and users in the whole plot is large, and meanwhile, because each user is connected into the pipe network and is different in using and living-in progress, the position of each user in the pipe network is different and other factors cause that each supply station has individualized requirements in time and space, so that the control of the current regional energy supply is complex.
Disclosure of Invention
The present application is directed to solving at least one of the problems in the prior art. Therefore, the present application provides a method, a system and a storage medium for controlling regional energy supply, which can effectively simplify the control of regional energy.
In order to solve the technical problem, the following technical scheme is provided:
the embodiment of the first aspect of the present application provides a regional energy supply control method, which is applied to a regional energy supply station, and includes:
calculating to obtain the working lift range of a supply device in the regional energy supply station according to a pipe network calculation model corresponding to the regional energy supply station;
obtaining a supply model selection parameter according to a preset supply device characteristic curve set and the working lift range;
predicting operating parameters of the supply device according to the energy flow and the supply selection parameters of a plurality of users; a plurality of said users are all supplied with energy flow by said regional energy supply station;
calibrating the supply device according to the operating parameters.
According to the regional energy supply control method of the embodiment of the first aspect of the application, at least the following beneficial effects are achieved: according to the regional energy supply control method, the working head range of the supply device in the regional energy supply station can be obtained through the pipe network calculation model corresponding to the regional energy supply station, the operation parameters of the supply device are determined, the supply device is calibrated according to the operation parameters, and the control of regional energy is effectively simplified.
According to some embodiments of the first aspect of the present application, the calculating, according to a pipe network calculation model corresponding to the regional energy supply station, a working head range of a supply device in the regional energy supply station includes:
obtaining a plurality of pipe network operating conditions under the regional energy supply station; each pipe network operation working condition is used for representing the load rate combination relation of a plurality of users, and any two pipe network operation working conditions are different;
calculating the delivery lift of the supply device corresponding to each pipe network operation condition according to the pipe network calculation model;
fitting a plurality of pipe network operating conditions and supply device lifts corresponding to the pipe network operating conditions to obtain a region total load rate model;
and determining the working lift range according to the region total load rate model.
According to some embodiments of the first aspect of the present application, the calculating, according to the pipe network calculation model, a delivery head of a supply device corresponding to each of the pipe network operation conditions includes:
under each pipe network operation condition, calculating to obtain the pipe section flow of each pipe section connected with the regional energy supply station through the pipe network calculation model;
under each pipe network operation condition, performing pressure drop calculation on the flow of each pipe section and the corresponding preset pipe section design flow through the pipe network calculation model to obtain the pipe section pressure drop corresponding to each pipe section;
and under each pipe network operation condition, performing node pressure drop calculation on the pipe section pressure drop corresponding to each pipe section through the pipe network calculation model to obtain the delivery lift of the supply device.
According to some embodiments of the first aspect of the present application, under each pipe network operation condition, performing pressure drop calculation on each pipe segment flow and each corresponding preset pipe segment design flow through the pipe network calculation model to obtain a pipe segment pressure drop corresponding to each pipe segment, includes:
under each pipe network operation condition, performing inter-node pressure drop calculation on the flow of each pipe section through the pipe network calculation model to obtain a plurality of inter-node pressure drops;
performing total pressure drop calculation on the pressure drops among the nodes through the pipe network calculation model to obtain a main pipe section pressure drop and at least one branch pipe section pressure drop;
selecting a maximum first pressure drop from the pressure drop of the main pipe section and the pressure drop of at least one branch pipe section through the pipe network calculation model;
and summing the first pressure drop and a first qualification pressure head through the pipe network calculation model to calculate the delivery head of the supply device, wherein the first qualification pressure head is the minimum qualification pressure head of the supply device.
According to some embodiments of the first aspect of the present application, the obtaining of the feeding profile selection parameter according to the preset feeding device characteristic curve set and the working head range comprises:
and determining the operating parameters of the supply devices according to the supply device characteristic curve corresponding to the supply selection parameters and the energy flow of a plurality of users, wherein the operating parameters comprise the number and the operating frequency of the supply devices.
According to some embodiments of the first aspect of the application, the method further comprises:
and when the operation parameters are outside the working head range, predicting the operation parameters of the supply device again according to the upper limit and the lower limit of the head of the working head range.
According to some embodiments of the first aspect of the application, the method further comprises:
when the operation efficiency is lower than 75%, the operation parameters of the supply device are predicted again.
In a second aspect of the present invention, there is provided a regional water supply system including a regional energy supply station and a pipe network connected to the regional energy supply station, wherein the regional energy supply station is applied to the method for controlling regional energy supply according to any one of the first aspect of the present invention to supply hot water or cold water to a plurality of users on the pipe network.
A third aspect of the present application provides a system for controlling regional energy supply, comprising:
at least one processor;
at least one program;
the programs are stored in the memory, and the processor executes at least one of the programs to implement:
a method of controlling regional energy supply as claimed in any one of the first aspects of the present application.
In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium storing computer-executable signals for performing:
a method of controlling regional energy supply as claimed in any one of the first aspects of the present application.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
Additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a flow chart of a method for controlling regional energy supply provided by some embodiments of the present application;
fig. 2 is a flowchart for calculating an operating head range of a feeding device in a regional energy supply station according to some embodiments of the present disclosure;
fig. 3 is a flowchart for calculating a head of a supply device corresponding to each pipe network operation condition according to some embodiments of the present disclosure;
FIG. 4 is a flow chart of calculating a pressure drop across each spool piece according to some embodiments of the present application;
FIG. 5 is a schematic illustration of a regional total load rate model provided by some embodiments of the present application;
FIG. 6 is a schematic illustration of a region provided by some embodiments of the present application;
FIG. 7 is a schematic diagram of a set of supply device characteristics and a range of operating head provided in accordance with some embodiments of the present application;
fig. 8 is a block diagram of a control system for regional energy supply according to some embodiments of the present disclosure.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It should be noted that, although a logical order is illustrated in the flowcharts, in some cases, the steps illustrated or described may be performed in an order different from that in the flowcharts. The terms and the like in the description and the claims, as well as in the drawings described above, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.
In the description of the present application, if there are first and second descriptions for distinguishing technical features, the description should not be interpreted as indicating or implying any relative importance or implying any number of indicated technical features or implying any precedence over indicated by the indicated technical features.
In the description of the present application, unless otherwise specifically limited, terms such as set, installed, connected and the like should be understood broadly, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present application in combination with the specific contents of the technical solutions.
It should be noted that, the regional energy supply system generally transmits energy from a fixed supply station to each user through an external pipe network to complete energy supply, and usually, one regional pipe network includes a plurality of users, and one pipe network can supply energy to a plurality of end users, and the temperature of the energy supplied to the user side is fixed. The regional energy supply system is characterized in that the number of service plots and users in the whole district is large, meanwhile, due to the fact that the users are different in access to a pipe network and in use check-in progress, the positions of the users in the pipe network are different, the use rules of the users are different in the operation process, and the like, each supply station has personalized requirements in time and space, in order to meet the requirements of each user, the supply station needs to adjust and control the operation frequency and the number of the supply devices, and therefore control of current regional energy supply is complex.
According to one embodiment of the application, if there is only one customer node in the area, the hydraulic characteristic curve in the area is the square relation of the delivered energy flow, i.e. the square relation of the area load rate, and if there are multiple customer nodes in the area, the flow distribution in different pipe sections in the area is different due to the combination of the energy flow rates which may correspond to different customers, and thus different pipe section pressure drops and different operating lifts of the supply device are also provided for the same delivered energy flow, in time for the same area load rate or the same delivered energy flow. Thus, regional energy supply exists for a supply device operating area. If the working area of the feeding device can be determined, the running lift range of the feeding device can be locked, the control and adjustment range of the feeding device is greatly reduced, and the control stability is improved.
For convenience of explaining the work flow of the regional energy supply control method of the present application, the regional water supply will be described as an example.
Referring to fig. 1, in a first aspect, the present embodiment provides a method for controlling regional energy supply, including, but not limited to, step S110, step S120, step S130, and step S140.
Step S110, calculating the working lift range of a supply device in the regional energy supply station according to a pipe network calculation model corresponding to the regional energy supply station;
step S120, obtaining supply model selection parameters according to a preset supply device characteristic curve set and a working head range;
step S130, predicting the operation parameters of the supply device according to the energy flow and the supply selection parameters of a plurality of users; the plurality of users are supplied with energy flow by regional energy supply stations;
step S140, calibrating the supply device according to the operating parameters.
Referring to fig. 6, fig. 6 is a schematic illustration of a region provided by some embodiments of the present application; according to one embodiment of the application, the area is a ring-shaped pipe network, the energy supply stations respectively supply energy from two ends of the ring-shaped pipe network, and the valves LT-1 and LT-2 are both in a closed state during normal operation and actually operate as a branch-shaped pipe network; when a fault occurs at a certain point in the pipe network, the valve LT-1 or LT-2 is opened, and energy is supplied through one end of the energy supply station.
According to the control method for regional energy supply, a pipe network calculation model corresponding to a regional energy supply station can be obtained on the basis of measuring the energy flow of each user in a fixed region, the working head range of a supply device in the regional energy supply station is obtained through the pipe network calculation model corresponding to the regional energy supply station, supply selection parameters are obtained according to a preset supply device characteristic curve set and the working head range, the operation parameters of the supply device are determined, the supply device is calibrated according to the operation parameters, and the control of regional energy is effectively simplified.
When the method for controlling regional energy supply of the present application is applied to a water supply system, the supply device is a water pump.
Referring to fig. 2, the present embodiment provides a method for calculating an operating head range of a feeding device in a regional energy supply station, including, but not limited to, step S210, step S220, step S230, and step S240.
Step S210, obtaining a plurality of pipe network operating conditions under a regional energy supply station; each pipe network operation condition is used for representing the load rate combination relation of a plurality of users, and any two pipe network operation conditions are different;
step S220, calculating the delivery lift of the supply device corresponding to each pipe network operation condition according to the pipe network calculation model;
step S230, fitting the plurality of pipe network operation conditions and the delivery lifts of the supply devices corresponding to the pipe network operation conditions to obtain a regional total load rate model;
and S240, determining a working lift range according to the region total load rate model.
Referring to FIG. 6, the left pipe network is taken as an example, and the left pipe network to the valve LT-1 has 11 users, which can be measured according to the load factor 100%,The energy flow rates of 11 several users are combined by 75%, 50%, 25% and 0% load rates to obtain 5 under regional energy supply stations 11 The operation condition of each pipe network does not consider the influence of flow change caused by the fact that the return water temperature of a user is lower than the design temperature. According to the pipe network calculation model, a plurality of pipe network operation conditions are calculated to obtain the delivery lift of the supply device corresponding to the pipe network operation conditions, and the delivery lifts of the supply device corresponding to the pipe network operation conditions and the plurality of pipe network operation conditions are fitted to obtain the regional total load rate model. By means of the regional total load rate model, the working head range of the feeding device can be determined.
Specifically, the regional total load rate model represents the correspondence between the energy flow rate of the user and the head of the supply device. In addition, by combining the preset supply device characteristic curve set and the regional total load factor model, the method and the device can determine the operation parameters of the supply device, effectively simplify the control of regional energy, and ensure that the supply device can operate efficiently.
The regional total load factor model is determined by the energy flow distribution of users in the region, the supply device characteristic curve set is determined by supply device delivery parameters, each model of supply device has a respective characteristic curve, and the regional total load factor model and the supply device characteristic curves are independent and do not influence each other.
Specifically, a pipe network calculation model is shown in table i; table I is shown in the following table:
table I: pipe network calculation model
More specifically, referring to fig. 5, fig. 5 is a schematic diagram of a regional total load rate model provided by some embodiments of the present application;
it can be seen that on 100% design load day, all users have 100% access rate, and when the access rate is 100%, the energy flow of all users can be changed between 0-100%, the total load rate of the pipe network is also changed between 0-100%, and the operating lift range of the supply device is also maximum; when the energy flow of each user is 100% load rate, the load rate of the pipe network is also 100%, and the running flow and the lift of the supply device are designed values; when the total load rate of the pipe network is 60%, the operation lift of the supply device is changed between 13.81 m and 20.42m, and the change amplitude is 6.41m; when the total load rate of the pipe network is close to 7%, the operating lift of the supply device is changed between 12.02 and 15.28 m.
Starting from the total load factor of the pipe network of 7%, the operating head range of the supply device is rapidly reduced along with the reduction of the total load factor of the pipe network, which is mainly related to the load factor of the branch pipes 8. When two users of the branch pipeline 8 operate according to 100% of energy flow and the energy flow of other users is zero, the total load rate of the pipe network is 7%. At the moment, the flow rate of the branch pipeline 8 is the design flow rate, the pressure drop is the design pressure drop, and the operation lift of the supply device is the pressure drop from the user node J1 to the user node J13; when the energy flow of the two users is reduced, the pressure drop of the pipe section of the branch pipeline 8 is rapidly reduced, and the variation trend of the operation lift of the supply device within the range of 0-7% of load rate appears.
On 75% of design load days, the access rate of all users is 100%, and the parking rate is 100%, the energy flow of all users can be changed between 0% and 75%, the total load rate of a pipe network is also changed between 0% and 75%, and the range of the operating head of a supply device is reduced; when the total load rate of the pipe network is 60%, the operating lift of the supply device is changed between 14.82 m and 17.58m, and the change amplitude is 2.76m; similarly, starting from the total load factor of the network of 6%, the operating head range of the supply installation narrows rapidly, which is also the result of the two users of the branch line 8 dropping from an energy flow of 75%.
On 50% design load day, and all users access rate is 100%, when the income rate is 100%, all users' energy flow can change between 0-50%, and the total load rate of pipe network also changes between 0-50%, and the supply apparatus operation lift range further narrows.
Referring to fig. 3, the embodiment of the present application provides a method for calculating a head of a supply device corresponding to each pipe network operation condition, including but not limited to step S310, step S320, and step S330.
Step S310, under each pipe network operation condition, calculating through a pipe network calculation model to obtain the pipe section flow of each pipe section of the energy supply station in the connection area;
step S320, under each pipe network operation condition, performing pressure drop calculation on the flow of each pipe section and the corresponding preset pipe section design flow through a pipe network calculation model to obtain the pipe section pressure drop corresponding to each pipe section;
and S330, under each pipe network operation condition, performing node pressure drop calculation on the pipe section pressure drop corresponding to each pipe section through the pipe network calculation model to obtain the delivery lift of the supply device.
It will be appreciated that a region includes several pipe segments, including several user nodes.
According to an embodiment of the present application, referring to fig. 6, during normal operation, both valves LT-1 and LT-2 are in a closed state, and here, taking an outer pipe network of a branch main pipe on the left side of an area as an example, the present application measures energy flow of users included in the outer pipe network on the left side of the area, and then calculates a pipe section pressure drop according to the energy flow of the users and a pipe section design pressure drop, that is, total pressure drops from a user node J1 to a main pipe end user node J11, a branch pipe 6 end user node J15, and a branch pipe 8 end user node J13, respectively. And then the delivery lift of the supply device is obtained according to the pressure drop of the pipe section and a preset first qualification pressure head.
Specifically, it is assumed herein that the energy flows supplied by the same pipe segment are equal; and the preset design pressure drop of the pipe section takes the resistances of the straight pipe section in the area and the pipe fittings such as a valve, an elbow, a tee joint, a reducer and the like into consideration, and all the resistances are assumed to be the square relation of the energy flow of a user.
It should be noted that, according to the present application, a pipe network calculation model can be further obtained according to the user nodes of each pipe segment, the energy flow of the user in the user node, the supply device lift corresponding to the energy flow of the user, and the like, where the pipe network calculation model reflects the pipe segment flow, the pressure drop of each pipe segment, the pressure drop of the main pipe segment, the pressure drop of the branch pipe segments, the total pressure drop of the nodes, and the calculation method of the supply device lift in different pipe segments.
With reference to table I, it is shown,according to one embodiment of the application, the area comprises a first user node S1 and a second user node S2, and the energy flow of the first user node S1 is Q S1 And calculating the pipe section flow of the first pipe section to be Q according to the energy flow meter of the first user node S1 1 ＝Q 2 +Q S1 Wherein Q is 2 The pipe section flow of the second pipe section can be obtained according to the pipe section flow Q1 of the first pipe section and the preset design flow Q of the first pipe section 1 design of And first pipe section design pressure drop Δ P 1 design of Calculating to obtain a first pipe section pressure drop of
According to another embodiment of the present application, the pipe section flow rate Q of the second pipe section can be calculated according to the energy flow rate of the second user node S2 2 ＝Q 3 +Q S2 Wherein Q is 3 The method for calculating the pipe section flow of the third pipe section can be analogized, and the pipe section flow of the second pipe section can be obtained according to the pipe section flow Q2 of the second pipe section and the preset design flow Q of the second pipe section 2 design of And a second pipe section design pressure drop Δ P 2 design of Calculating to obtain the pressure drop of the second pipe section, wherein the pressure drop of the second pipe section is
More specifically, the method of calculating the pressure drop in the third pipe section may be analogized.
Referring to fig. 4, the present embodiment provides a method for calculating a pressure drop of each pipe segment, including, but not limited to, step S410, step S420, and step S430.
Step S410, under each pipe network operation condition, performing inter-node pressure drop calculation on the flow of each pipe section through a pipe network calculation model to obtain a plurality of inter-node pressure drops;
step S420, performing total pressure drop calculation on the pressure drops among the plurality of nodes through a pipe network calculation model to obtain a main pipe section pressure drop and at least one branch pipe section pressure drop;
step S430, selecting the largest first pressure drop from the pressure drop of the main pipe section and the pressure drop of the at least one branch pipe section through a pipe network calculation model;
and step S440, summing the first pressure drop and the first qualification pressure head through a pipe network calculation model, and calculating to obtain the head of the supply device, wherein the first qualification pressure head is the minimum qualification pressure head of the supply device.
Referring to table I, it can be understood that, after the pipe segment pressure drops of the pipe segments in each area are calculated, the pipe segment pressure drops of the continuous pipe segments may be summed to obtain a plurality of inter-node pressure drops, according to an embodiment of the present application, the pipe segment pressure drops of the user nodes J1 to J7 may be accumulated to obtain a first inter-node pressure drop, the pipe segment pressure drop of the user node J8 is calculated to obtain a second inter-node pressure drop, the pipe segment pressure drops of the user nodes J8 to J11 are calculated to obtain a third inter-node pressure drop, and the first inter-node pressure drop, the second inter-node pressure drop, and the third inter-node pressure drop are accumulated to obtain a main pipe segment pressure drop, that is, the total pressure drop of the pipe segments from the user node J1 to the user node J11 at the end of the main pipe, specifically, in this embodiment, the user node J1 is an energy supply station.
According to the method for obtaining the pressure drop of the main pipe section, the pressure drops among a plurality of nodes in each branch pipe section are accumulated by analogy to obtain the pressure drop of the branch pipe section, namely the total pressure drop of the pipe section from the user node J1 to the user node J15 at the tail end of the branch pipe 6 and the total pressure drop of the pipe section from the user node J1 to the user node J13 at the tail end of the branch pipe 8. And then taking the maximum value of the pressure drop of the main pipe section and the pressure drop of the branch pipe section to obtain the maximum pipe section pressure drop, and adding a first resource pressure head to obtain the delivery head of the supply device. Specifically, the first qualification indenter is the minimum qualification indenter.
It can be understood that the supply selection parameters are obtained according to the preset characteristic curve set and the working head range of the supply device, and comprise: and determining the operating parameters of the supply device according to the characteristic curve of the supply device corresponding to the supply type selection parameters and the energy flow of a plurality of users, wherein the operating parameters comprise the number and the operating frequency of the supply device.
Referring to fig. 7, it can be understood that the current supplier model is basically determined according to the design flow rate on the 100% design load day and the corresponding pipe section pressure drop, and the schematic diagram of the characteristic curve set of the supplier and the working head range sequentially represents the rotation speed 1480RPM frequency 100%, the rotation speed 1258RPM frequency 85%, the rotation speed 1036RPM frequency 70% and the rotation speed 814RPM frequency 55% from top to bottom, wherein the data points of the small diamond marks represent one supplier, the data points of the small diamond marks represent two suppliers, the data points of the triangular marks represent three suppliers, the data points of the polygonal marks represent four suppliers, the data points of the large diamond marks represent five suppliers, and the data points of the large diamond marks represent six suppliers. Specifically, the number next to the data point is the operating efficiency of the feeding device.
When the type of the feeding device is selected according to the type of the feeding device and the current zone load factor to obtain the operating parameters of the feeding device in the zone, the operating parameters of the feeding device are subject to the operating zone and are ensured to be in the high-efficiency zone. Referring to fig. 7, the data point corresponds to the operating parameter of the supply device, and for making the operating parameter of the supply device obey the working area, the working head range corresponding to the area load rate needs to be obtained according to the current area load rate, the supply device characteristic curve set and the schematic diagram of the working head range, and the data point is always located in the working head range, such as the data point is located outside the working head range, and the operating parameter needs to be corrected according to the working head range.
According to an embodiment of the present application, referring to fig. 6 and 7, when the total load factor of the left pipe network is 100%, the left user demand can be met by simultaneously operating 6 supply devices at 70% of the rotation speed, but when there is a user on the right side, it is obviously impractical for all the 6 supply devices to supply cold water to the user on the right side; and the 4 feeders operated at 85% of the rotation speed are also close to the working area, but the delivery head of the feeders is still slightly larger.
It will be appreciated that when the operating parameter is outside the working head range, the operating parameter of the feed device is again predicted from the upper and lower head limits of the working head range.
It should be noted that when the data point is outside the working head range, it needs to be corrected, and first, the maximum head and the minimum head of the working head of the feeding device need to be determined according to the working head range, and then, the working parameter of the feeding device needs to be corrected according to the maximum head and the minimum head, so as to obtain the corrected working parameter.
According to an embodiment of the present application, referring to fig. 6 and 7, when the total load factor of the left pipe network is 40%, the maximum lift of the working head of the supply device is 18.3m, the minimum lift of the working head of the supply device is 13.2m, at this time, 18.3m corresponds to 70% of the rotation speed of 2 supply devices, and 13.2m corresponds to about 50% of the rotation speed of 3 supply devices, so that the working condition in the working head range when the total load factor of the pipe network is the same can be operated by switching 2 or 3 supply devices by adjusting the rotation speed. In this interval, the operation efficiency of the feeding device is about 80%, and the feeding device basically operates in a high-efficiency area.
According to another embodiment of the application, the feed device sizing head far exceeds the working head range, and it is necessary to operate in the working head range by reducing the frequency. The lift of the supply device under the normal operation condition is determined according to the accident condition with small probability, and the cost is that the power frequency operation lift of the supply device is far away from the lift required actually when the supply device is under the normal operation condition.
Furthermore, another problem of the over-sizing of the head of the feeding device is that when the total load rate of the pipe network is low, for example less than 15%, basically one feeding device is operated at 50% of the rotation speed or less, and at this time, the frequency modulation performance of the feeding device is more required. For regional energy supply systems, the regional energy supply systems operate at a low load rate, including nighttime load, most of the year, so that the low load rate operation condition needs to be considered in the selection design stage of the supply device.
It will be appreciated that when the operating efficiency is below 75%, the operating parameters of the supply are again predicted.
It should be noted that, to ensure that the operating efficiency of the supply device is higher than 75%, when the operating efficiency corresponding to the number of operating units and the operating frequency is lower than 75%, that is, the operating efficiency corresponding to the data point is lower than 75%, the number of operating units and the operating frequency need to be corrected according to the characteristic curve set of the supply device and the schematic diagram of the working head range, so that the operating efficiency of the supply device is higher than 75%, and the data point corresponding to the operating parameter of the supply device should be within the working head range.
The method for controlling local energy supply according to the present invention can be applied to a heating pipe network system and the like.
In a second aspect, the present application provides a regional water supply system, where the regional water supply system includes a regional energy supply station and a pipe network connected to the regional energy supply station, and the control method applied by the regional energy supply station to regional energy supply is used to supply hot water or cold water to multiple users on the pipe network.
In a third aspect, referring to fig. 8, an embodiment of the present application provides a system for controlling regional energy supply, including:
at least one memory 200;
at least one processor 100;
at least one program;
the programs are stored in the memory 200, and the processor 100 executes at least one program to implement:
a method of controlling regional energy supply as in any embodiment of the first aspect of the present application.
The processor 100 and the memory 200 may be connected by a bus or other means.
The memory 200 is one type of non-transitory readable storage medium that may be used to store non-transitory software instructions as well as non-transitory executable instructions. Further, the memory 200 may include high speed random access memory, and may also include non-transitory memory, such as at least one magnetic disk storage device, flash memory device, or other non-transitory solid state storage device. It will be appreciated that the memory 200 may alternatively comprise memory 200 located remotely from the processor 100, and that such remote memory 200 may be coupled to the processor 100 via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The processor 100 implements a method for controlling regional energy supply according to the first embodiment by executing non-transitory software instructions, instructions and signals stored in the memory 200 to perform various functional applications and data processing.
Non-transitory software instructions and instructions required to implement a regional energy supply control system according to the above-described embodiments are stored in the memory 200, and when executed by the processor 100, perform a regional energy supply control method according to an embodiment of the first aspect of the present application, for example, performing the above-described method steps S110 to S140 in fig. 1, method steps S210 to S240 in fig. 2, method steps S310 to S330 in fig. 3, and method steps S410 to S440 in fig. 4.
In a fourth aspect, embodiments of the present application provide a computer-readable storage medium storing computer-executable signals for performing:
a method of controlling regional energy supply as claimed in any one of the embodiments of the first aspect.
For example, the above-described method steps S110 to S140 in fig. 1, method steps S210 to S240 in fig. 2, method steps S310 to S330 in fig. 3, and method steps S410 to S440 in fig. 4 are performed.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
From the above description of embodiments, those of ordinary skill in the art will appreciate that all or some of the steps, systems, and methods disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable signals, data structures, instruction modules or other data, as is well known to those of ordinary skill in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can accessed by a computer. In addition, communication media typically embodies computer-readable signals, data structures, instruction modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as known to those skilled in the art.
The embodiments of the present application have been described in detail with reference to the drawings, but the present application is not limited to the embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present application.
Claims (10)
1. A control method of regional energy supply, which is applied to a regional energy supply station, the control method comprising:
calculating to obtain the working lift range of a supply device in the regional energy supply station according to a pipe network calculation model corresponding to the regional energy supply station;
obtaining a supply model selection parameter according to a preset supply device characteristic curve set and the working lift range;
predicting an operating parameter of the supply device according to the energy flow rates of a plurality of users and the supply selection parameter; a plurality of the users are all supplied with energy flow by the regional energy supply station;
calibrating the supply device according to the operating parameters.
2. The method for controlling regional energy supply according to claim 1, wherein the calculating a working head range of a supply device in the regional energy supply station according to a pipe network calculation model corresponding to the regional energy supply station includes:
obtaining a plurality of pipe network operating conditions under the regional energy supply station; each pipe network operation working condition is used for representing the load rate combination relation of a plurality of users, and any two pipe network operation working conditions are different;
calculating the delivery lift of the supply device corresponding to each pipe network operation condition according to the pipe network calculation model;
fitting a plurality of pipe network operating conditions and supply device lifts corresponding to the pipe network operating conditions to obtain a region total load rate model;
and determining the working lift range according to the region total load rate model.
3. The method according to claim 2, wherein the calculating a supply device head corresponding to each operating condition of the pipe network according to the pipe network calculation model comprises:
under each pipe network operation condition, calculating through the pipe network calculation model to obtain the pipe section flow of each pipe section connected with the regional energy supply station;
under each pipe network operation condition, performing pressure drop calculation on the flow of each pipe section and the preset pipe section design flow corresponding to each pipe section through the pipe network calculation model to obtain the pipe section pressure drop corresponding to each pipe section;
and under each pipe network operation condition, calculating the node pressure drop of the pipe section pressure drop corresponding to each pipe section through the pipe network calculation model to obtain the delivery lift of the supply device.
4. The method according to claim 3, wherein the step of calculating pressure drop of the pipe section corresponding to each pipe section by the pipe network calculation model under each pipe network operation condition to obtain the pressure drop of the pipe section corresponding to each pipe section comprises:
under each pipe network operation condition, performing inter-node pressure drop calculation on the flow of each pipe section through the pipe network calculation model to obtain a plurality of inter-node pressure drops;
performing total pressure drop calculation on the pressure drops among the nodes through the pipe network calculation model to obtain a main pipe section pressure drop and at least one branch pipe section pressure drop;
selecting a maximum first pressure drop from the pressure drop of the main pipe section and the pressure drop of at least one branch pipe section through the pipe network calculation model;
and summing the first pressure drop and a first qualification pressure head through the pipe network calculation model to calculate the delivery head of the supply device, wherein the first qualification pressure head is the minimum qualification pressure head of the supply device.
5. The method according to claim 1, wherein the obtaining of the supply profile selection parameters according to the preset set of supply device characteristic curves and the working head range comprises:
and determining the operating parameters of the supply devices according to the supply device characteristic curves corresponding to the supply selection parameters and the energy flow of a plurality of users, wherein the operating parameters comprise the number and the operating frequency of the supply devices.
6. The method of controlling regional energy supply according to claim 5, further comprising:
when the operation parameters are outside the working head range, the operation parameters of the supply device are predicted again according to the upper and lower head limits of the working head range.
7. The method of controlling regional energy supply according to claim 5, further comprising:
when the operation efficiency is lower than 75%, the operation parameters of the supply device are predicted again.
8. A regional water supply system comprising a regional energy supply station and a pipe network connected to the regional energy supply station, wherein the regional energy supply station is adapted to supply hot or cold water to a plurality of users on the pipe network by the method for controlling regional energy supply according to any one of claims 1 to 7.
9. A system for controlling regional energy supply, comprising:
at least one processor;
at least one program;
the programs are stored in the memory, and the processor executes at least one of the programs to implement:
the method of controlling regional energy supply according to any one of claims 1 to 7.
10. A computer-readable storage medium having computer-executable signals stored thereon for performing:
the method of controlling regional energy supply according to any one of claims 1 to 7.
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