CN116467562A - Method and device for determining water consumption rate characteristic curve of hydropower station - Google Patents
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Abstract
The invention provides a method and equipment for determining a hydropower station water consumption rate characteristic curve. The method comprises the following steps: step 1 to step 6. The invention solves the difficulty brought by different water purifying heads when each unit operates, and according to the change characteristics of the water heads of the units, the flow characteristic curve of the unit combination is deduced on the basis of the flow characteristic curve taking the water head as a parameter, so as to obtain the flow characteristic curve of the hydropower station taking the water head as a parameter, and the flow characteristic curve is converted into the hydropower station water consumption characteristic curve taking the reservoir water level as a parameter and taking the delivery flow as a parameter, thereby promoting the economic operation of the hydropower station.
Description
Technical Field
The embodiment of the invention relates to the technical field of hydropower station operation, in particular to a method and equipment for determining a hydropower station water consumption rate characteristic curve.
Background
The economic operation of the power station can increase the power generation benefit by about 1-3%. The change rule of the hydropower station water consumption rate is researched, the hydropower station water consumption rate is reduced, and the method has important significance for improving the power generation efficiency of the hydropower station and fully utilizing hydropower resources. The power generation and water consumption rate is an important index for the economic operation of hydropower stations, and is widely focused in the actual production of hydropower stations. The research on the change rule of the water consumption rate of each power station under various working conditions is significant for improving the utilization efficiency of water energy resources and fully playing the role of the water-electricity junction.
When the number of the unit types is large and the number of the unit combinations is large, the traditional solving method generally takes longer time, in addition, the traditional water consumption rate characteristic adopts a water purification head, the water consumption rate is limited in practical application, the reservoir water level and the reservoir outlet flow are the most important two easily acquired indexes in the reservoir operation process, and if a relation curve of the water consumption rate, the reservoir water level and the reservoir outlet flow (or the output force) of the hydropower station is drawn, the method has an important effect on promoting the real-time economic operation of the hydropower station. Therefore, developing a method and a device for determining a water consumption rate characteristic curve of a hydropower station can effectively overcome the defects in the related art, and is a technical problem to be solved in the industry.
Disclosure of Invention
Aiming at the problems existing in the prior art, the embodiment of the invention provides a method and equipment for determining a hydropower station water consumption rate characteristic curve.
In a first aspect, an embodiment of the present invention provides a method for determining a water consumption rate characteristic curve of a hydropower station, including: step 1: on the basis of a set output-water purification head-flow relation curve, combining a set power generation reference flow-water head loss relation curve, searching water head loss corresponding to flow in set output-water purification head-flow data, and adding the water head loss to the water purification head to obtain output-Mao Shuitou-flow relation data; step 2: fitting flow and output relation curves under the equal water head, and drawing a unit flow-Mao Shuitou-output relation curve cluster; step 3: obtaining a flow-Mao Shuitou-output relation curve cluster when two units are combined; step 4: adding other units one by one based on the flow-Mao Shuitou-optimal output curve clusters of the two units, and respectively obtaining the output flow-Mao Shuitou-optimal output relation curve clusters of the hydropower station according to the same calculation in the step 3; step 5: according to the unique determined characteristics of the water head of the hydropower station by the reservoir water level and the delivery flow, converting the delivery flow-Mao Shuitou-optimal output relation curve cluster of the hydropower station into the delivery flow-reservoir water level-optimal output relation curve cluster of the hydropower station; step 6: and according to the characteristic that the water consumption rate is uniquely determined by the flow and the output, converting the output flow-reservoir water level-optimal output relation curve cluster of the hydropower station into a water consumption rate-reservoir water level-output flow relation curve cluster of the hydropower station, namely a water consumption rate characteristic curve of the hydropower station.
Based on the content of the embodiment of the method, the method for determining the water consumption rate characteristic curve of the hydropower station provided by the embodiment of the invention specifically comprises the following steps: in the power generation process, the flow of each unit is different, the water purifying heads are different, and Mao Shuitou is the same, and the relation between the water purifying heads and the water head of the units is as follows: the unit Mao Shuitou, also called hydropower head, has the expression: h sdz ＝Z sy -Z xy The method comprises the steps of carrying out a first treatment on the surface of the The unit water purification head, also called water turbine head, has the expression: h T ＝Z sy -Z xy - Δh; wherein H is sdz Is a hydropower station water head; z is Z sy Is the upstream water level; z is Z xy Is the downstream water level; h T Is a water purifying head; Δh is head loss of the entire water diversion system; and adding the water head loss of the unit when the corresponding flow is added to the water purifying head of the unit in the flow-water head-output relation curve of the unit, so as to obtain flow output relation points corresponding to a plurality of water heads.
Based on the content of the embodiment of the method, the method for determining the water consumption rate characteristic curve of the hydropower station provided by the embodiment of the invention specifically comprises the following steps: step 3.1: arranging the flow-Mao Shuitou-output relation curve of each unit into graphs with the abscissa as an output value and the ordinate as a flow value, wherein the scales of the abscissa and the ordinate of each graph are the same; step 3.2: respectively extracting flow output relation graphs of the two units under the same water head, overlapping the horizontal coordinates of the two graphs, and inverting the vertical coordinates of the second unit; step 3.3: vertically moving the flow characteristic curve of the second machine set to enable the ordinate parts to be overlapped, the flow sum of each point of the two machine sets to be identical, drawing a horizontal line in the overlapped range, and respectively intersecting the two flow output relation curves, wherein the sum of the corresponding output at the two intersection points is the total output value of the two machine sets; drawing a plurality of horizontal lines in a longitudinal coordinate superposition range, repeating the process to obtain a total output change curve of the combination of the two units under the condition of the flow and the flow, wherein the maximum output on the total output change curve is the maximum output which can be sent out by the two units when the two units are combined, and recording the flow and the output value of each unit when the maximum output is obtained; step 3.4: the graph of the second machine set is moved up and down to obtain the maximum output corresponding to different flow rates when the two machine sets are combined, and the flow rate-Mao Shuitou-optimal output relation curve under the water head when the two machine sets are combined is obtained; step 3.5: and (3) carrying out the same calculation on each water head to obtain a flow-Mao Shuitou-optimal output curve cluster under the combined condition of the two units.
Based on the content of the embodiment of the method, the method for determining the water consumption rate characteristic curve of the hydropower station provided by the embodiment of the invention specifically includes the following step 4: taking the flow-Mao Shuitou-optimal output curve cluster under the combination condition of two units as a basis, adding other units one by one, repeating the calculation of the step 3, and obtaining the flow-Mao Shuitou-optimal output relation curve cluster when multiple units are combined; the flow-Mao Shuitou-output relation curve when all the hydropower station units are combined is the hydropower station delivery flow-Mao Shuitou-optimal output relation curve cluster.
On the basis of the foregoing method embodiment, the determining method for the water consumption rate characteristic curve of the hydropower station provided in the embodiment of the present invention, step 6 further includes: and according to the characteristic that the water consumption rate is uniquely determined by the flow and the output, converting the output flow-reservoir water level-optimal output relation curve cluster of the hydropower station into a water consumption rate-reservoir water level-output flow relation curve cluster of the hydropower station, namely a water consumption rate characteristic curve of the hydropower station.
In a second aspect, an embodiment of the present invention provides a device for determining a water consumption rate characteristic curve of a hydropower station, including: the first main module is used for searching the head loss corresponding to the flow in the unit output-water purification head-flow data by combining the unit power generation reference flow-head loss relation curve on the basis of the unit output-water purification head-flow relation curve, and adding the head loss to the water purification head to obtain output-Mao Shuitou-flow relation data; the second main module is used for realizing fitting of flow and output relation curves under the water head and the like, and drawing a unit flow-Mao Shuitou-output relation curve cluster; the third main module is used for obtaining a flow-Mao Shuitou-output relation curve cluster when the two units are combined; a fourth main module, configured to implement adding other units one by one based on the flow-Mao Shuitou-optimal output curve clusters of the two units, and obtaining a flow-Mao Shuitou-optimal output relation curve cluster of the hydropower station according to the same calculation in the step 3; a fifth main module, configured to implement a function of converting the ex-warehouse flow-Mao Shuitou-optimal output relationship curve cluster of the hydropower station into an ex-warehouse flow-reservoir water level-optimal output relationship curve cluster of the hydropower station according to a characteristic that a water head of the hydropower station is uniquely determined by the reservoir water level and the ex-warehouse flow; and the sixth main module is used for converting the ex-warehouse flow-reservoir water level-optimal output relation curve cluster of the hydropower station into a hydropower station water consumption rate-reservoir water level-ex-warehouse flow relation curve cluster, namely a hydropower station water consumption rate characteristic curve, according to the characteristic that the water consumption rate is uniquely determined by the flow and the output.
In a third aspect, an embodiment of the present invention provides an electronic device, including:
at least one processor; and
at least one memory communicatively coupled to the processor, wherein:
the memory stores program instructions executable by the processor, and the processor invokes the program instructions to perform the method for determining the water consumption rate characteristic curve of the hydropower station provided by any one of the various implementation manners of the first aspect.
In a fourth aspect, embodiments of the present invention provide a non-transitory computer readable storage medium storing computer instructions that cause a computer to perform a method for determining a hydropower station water consumption rate characteristic provided by any one of the various implementations of the first aspect.
The method and the device for determining the hydropower station water consumption rate characteristic curve solve the difficulty in calculation caused by the fact that water purifying heads of all units are often different when the units are operated, calculate the flow characteristic curve of the unit combination on the basis of the flow characteristic curve taking the water head as a parameter according to the change characteristics of the water head of the unit, obtain the hydropower station flow characteristic curve taking the water head as the parameter, convert the flow characteristic curve into the hydropower station water consumption rate characteristic curve taking the reservoir water level as the parameter and take the delivery flow as the parameter, and promote the economic operation of the hydropower station.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief description will be given below of the drawings required for the embodiments or the prior art descriptions, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without any inventive effort for a person skilled in the art.
FIG. 1 is a schematic flow chart of a method for determining a water consumption rate characteristic curve of a hydropower station according to an embodiment of the invention;
FIG. 2 is a schematic diagram of a determining device for determining a water consumption rate characteristic curve of a hydropower station according to an embodiment of the invention;
fig. 3 is a schematic diagram of an entity structure of an electronic device according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a unit output-head-flow relationship provided by an embodiment of the present invention;
FIG. 5 is a schematic diagram of a method for determining optimal output when the sum of flow rates is 600 cubic meters/second for a given water head when two sets of sets are combined;
fig. 6 is a schematic diagram of the relationship between the output of the hydropower station and the water level of the reservoir and the flow rate of the reservoir output according to the embodiment of the invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention. In addition, the technical features of each embodiment or the single embodiment provided by the invention can be combined with each other at will to form a feasible technical scheme, and the combination is not limited by the sequence of steps and/or the structural composition mode, but is necessarily based on the fact that a person of ordinary skill in the art can realize the combination, and when the technical scheme is contradictory or can not realize, the combination of the technical scheme is not considered to exist and is not within the protection scope of the invention claimed.
The embodiment of the invention provides a method for determining a water consumption rate characteristic curve of a hydropower station, which is shown in fig. 1, and comprises the following steps: step 1: on the basis of a set output-water purification head-flow relation curve, combining a set power generation reference flow-water head loss relation curve, searching water head loss corresponding to flow in set output-water purification head-flow data, and adding the water head loss to the water purification head to obtain output-Mao Shuitou-flow relation data; step 2: fitting flow and output relation curves under the equal water head, and drawing a unit flow-Mao Shuitou-output relation curve cluster; step 3: obtaining a flow-Mao Shuitou-output relation curve cluster when two units are combined; step 4: adding other units one by one based on the flow-Mao Shuitou-optimal output curve clusters of the two units, and respectively obtaining the output flow-Mao Shuitou-optimal output relation curve clusters of the hydropower station according to the same calculation in the step 3; step 5: according to the unique determined characteristics of the water head of the hydropower station by the reservoir water level and the delivery flow, converting the delivery flow-Mao Shuitou-optimal output relation curve cluster of the hydropower station into the delivery flow-reservoir water level-optimal output relation curve cluster of the hydropower station; step 6: and according to the characteristic that the water consumption rate is uniquely determined by the flow and the output, converting the output flow-reservoir water level-optimal output relation curve cluster of the hydropower station into a water consumption rate-reservoir water level-output flow relation curve cluster of the hydropower station, namely a water consumption rate characteristic curve of the hydropower station.
Based on the method embodimentAs an optional embodiment, the method for determining a water consumption rate characteristic curve of a hydropower station provided in the embodiment of the invention, step 1 specifically includes: as shown in fig. 4, in the power generation process, the flow rate of each unit is different, the water purification head is different, and Mao Shuitou is the same, and the relationship between the water purification head and the water head of the unit is: the unit Mao Shuitou, also called hydropower head, has the expression: h sdz ＝Z sy -Z xy The method comprises the steps of carrying out a first treatment on the surface of the The unit water purification head, also called water turbine head, has the expression: h T ＝Z sy -Z xy - Δh; wherein H is sdz Is a hydropower station water head; z is Z sy Is the upstream water level; z is Z xy Is the downstream water level; h T Is a water purifying head; Δh is head loss of the entire water diversion system; and adding the water head loss of the unit when the corresponding flow is added to the water purifying head of the unit in the flow-water head-output relation curve of the unit, so as to obtain flow output relation points corresponding to a plurality of water heads.
Based on the content of the above method embodiment, as an optional embodiment, the method for determining a water consumption rate characteristic curve of a hydropower station provided in the embodiment of the present invention, step 3 specifically includes: step 3.1: arranging the flow-Mao Shuitou-output relation curve of each unit into graphs with the abscissa as an output value and the ordinate as a flow value, wherein the scales of the abscissa and the ordinate of each graph are the same; step 3.2: respectively extracting flow output relation graphs of the two units under a water head, overlapping the horizontal coordinates of the two graphs, and inverting the vertical coordinates of the second unit; step 3.3: vertically moving the flow characteristic curve of the second machine set to enable the ordinate parts to be overlapped, the flow sum of each point of the two machine sets to be identical, drawing a horizontal line in the overlapped range, and respectively intersecting the two flow output relation curves, wherein the sum of the corresponding output at the two intersection points is the total output value of the two machine sets; drawing a plurality of horizontal lines in a longitudinal coordinate superposition range, repeating the process to obtain a total output change curve of the combination of the two units under the condition of the flow and the flow, wherein the maximum output on the total output change curve is the maximum output which can be sent out by the two units when the two units are combined, and recording the flow and the output value of each unit when the maximum output is obtained; step 3.4: the graph of the second machine set is moved up and down to obtain the maximum output corresponding to different flow rates when the two machine sets are combined, and the flow rate-Mao Shuitou-optimal output relation curve under the water head when the two machine sets are combined is obtained; step 3.5: and (3) carrying out the same calculation on each water head to obtain a flow-Mao Shuitou-optimal output curve cluster under the combined condition of the two units.
Specifically, step 3: the flow characteristic curve calculation step during the combination of the two units is as follows:
3-1: the flow rate-Mao Shuitou-output relation curve (QH) sdz N curve) is arranged into graphs with the abscissa being the output value and the ordinate being the flow value, and the scales of the abscissa and the ordinate of each graph are the same, wherein Q is the flow and N is the output;
3-2: for a certain Mao Shuitou H sdz1 Respectively extracting flow characteristic curves (Q-H) sdz1 -N)Ⅰ、(Q-H sdz1 -N) ii, back-fastening the coordinates of the second set of characteristics over the first set of characteristics, i.e.: the output of the unit I is the x axis, the rightward direction is positive, the flow is the y axis, and the upward direction is positive; the output of the unit II is x-axis, the right direction is positive, the flow is y-axis, and the downward direction is positive.
3-3: the flow characteristic curve of the second machine set is vertically moved so that the ordinate parts of the flow characteristic curves are overlapped, the sum of the ordinate parts of the two graphs on the same horizontal line is the total flow value (is a constant value Q i ) An abscissa N intersecting two lines in two patterns 1 、N 2 The sum is the flow and the total output of the two corresponding units. Drawing a total output change curve when a plurality of horizontal lines are used for obtaining different flow combinations, wherein the maximum output on the curve is the flow Q i Optimum output N of the unit combination i,max As shown in fig. 5.
3-4: the curve of the second machine set is moved up and down and the same calculation is performed to obtain different flow and Q 1 ,Q 2 ...Q n Optimum output N of the combination of the lower two units 1,max ,N 2,max ...N n,max . Thereby obtaining the hair waterAnd a flow characteristic curve when the two units are combined.
3-5: take different Mao Shuitou values H sdz1 ,H sdz2 ...H sdzn And (3) carrying out the same calculation of 3-2 to 3-4 to obtain a flow-Mao Shuitou-optimal output curve cluster under the condition of combining the two units.
Based on the foregoing content of the method embodiment, as an optional embodiment, the method for determining a water consumption rate characteristic curve of a hydropower station provided in the embodiment of the present invention, step 4 specifically includes: adding other units one by one based on the flow characteristic curves of the two units, and repeating the calculation in the step 3 to obtain a flow-Mao Shuitou-optimal output relation curve when the multiple units are combined; the flow-Mao Shuitou-output relation curve of all the hydropower station units is the flow-Mao Shuitou-optimal output relation curve of the hydropower station, as shown in fig. 6.
Based on the foregoing content of the method embodiment, as an optional embodiment, the method for determining a water consumption rate characteristic curve of a hydropower station provided in the embodiment of the present invention, step 6 further includes: and according to the characteristic that the water consumption rate is uniquely determined by the flow and the output, converting the output flow-reservoir water level-optimal output relation curve cluster of the hydropower station into a water consumption rate-reservoir water level-output flow relation curve cluster of the hydropower station, namely a water consumption rate characteristic curve of the hydropower station.
The method for determining the hydropower station water consumption rate characteristic curve solves the difficulty in calculation caused by the fact that water purification heads of all units are often different when the units are operated, and according to the change characteristics of the water heads of the units, the flow characteristic curve of the unit combination is deduced on the basis of the flow characteristic curve taking the water head as a parameter, so that the hydropower station flow characteristic curve taking the water head as the parameter is obtained, and is converted into the hydropower station water consumption rate characteristic curve taking the reservoir water level as the parameter and the delivery flow as the parameter, and economic operation of the hydropower station is promoted.
The implementation basis of the embodiments of the present invention is realized by a device with a processor function to perform programmed processing. Therefore, in engineering practice, the technical solutions and the functions of the embodiments of the present invention can be packaged into various modules. Based on this actual situation, on the basis of the above embodiments, an embodiment of the present invention provides a determining device for a hydropower station water consumption rate characteristic curve, which is configured to execute the determining method for the hydropower station water consumption rate characteristic curve in the above method embodiment. Referring to fig. 2, the apparatus includes: the first main module is used for searching the head loss corresponding to the flow in the unit output-water purification head-flow data by combining the unit power generation reference flow-head loss relation curve on the basis of the unit output-water purification head-flow relation curve, and adding the head loss to the water purification head to obtain output-Mao Shuitou-flow relation data; the second main module is used for realizing fitting of flow and output relation curves under the water head and the like, and drawing a unit flow-Mao Shuitou-output relation curve cluster; the third main module is used for obtaining a flow-Mao Shuitou-output relation curve cluster when the two units are combined; a fourth main module, configured to implement adding other units one by one based on the flow-Mao Shuitou-optimal output curve clusters of the two units, and obtaining a flow-Mao Shuitou-optimal output relation curve cluster of the hydropower station according to the same calculation in the step 3; a fifth main module, configured to implement a function of converting the ex-warehouse flow-Mao Shuitou-optimal output relationship curve cluster of the hydropower station into an ex-warehouse flow-reservoir water level-optimal output relationship curve cluster of the hydropower station according to a characteristic that a water head of the hydropower station is uniquely determined by the reservoir water level and the ex-warehouse flow; and the sixth main module is used for converting the ex-warehouse flow-reservoir water level-optimal output relation curve cluster of the hydropower station into a hydropower station water consumption rate-reservoir water level-ex-warehouse flow relation curve cluster, namely a hydropower station water consumption rate characteristic curve, according to the characteristic that the water consumption rate is uniquely determined by the flow and the output.
The determining device of the hydropower station water consumption rate characteristic curve provided by the embodiment of the invention adopts a plurality of modules in fig. 2, solves the difficulty brought by different water purifying heads when each unit operates, and according to the change characteristics of the water heads of the units, the flow characteristic curve of the unit combination is deduced on the basis of the flow characteristic curve taking the water head as a parameter, so as to obtain the hydropower station flow characteristic curve taking the water head as the parameter, and the hydropower station flow characteristic curve is converted into the hydropower station water consumption rate characteristic curve taking the reservoir water level as the parameter and the delivery flow as the parameter, thereby promoting the economic operation of the hydropower station.
It should be noted that, the device in the device embodiment provided by the present invention may be used to implement the method in the above method embodiment, and may also be used to implement the method in other method embodiments provided by the present invention, where the difference is merely that the corresponding functional module is provided, and the principle is basically the same as that of the above device embodiment provided by the present invention, so long as a person skilled in the art refers to a specific technical solution in the above device embodiment based on the above device embodiment, and obtains a corresponding technical means by combining technical features, and a technical solution formed by these technical means, and on the premise that the technical solution is ensured to have practicability, the device in the above device embodiment may be modified, so as to obtain a corresponding device embodiment, and be used to implement the method in other method embodiment. For example:
based on the content of the embodiment of the device, as an optional embodiment, the determining device for the water consumption rate characteristic curve of the hydropower station provided in the embodiment of the invention further includes: the first sub-module is configured to implement step 1 specifically including: in the power generation process, the flow of each unit is different, the water purifying heads are different, and Mao Shuitou is the same, and the relation between the water purifying heads and the water head of the units is as follows: the unit Mao Shuitou, also called hydropower head, has the expression: h sdz ＝Z sy -Z xy The method comprises the steps of carrying out a first treatment on the surface of the The unit water purification head, also called water turbine head, has the expression: h T ＝Z sy -Z xy - Δh; wherein H is sdz Is a hydropower station water head; z is Z sy Is the upstream water level; z is Z xy Is the downstream water level; h T Is a water purifying head; Δh is head loss of the entire water diversion system; and adding the water head loss of the unit when the corresponding flow is added to the water purifying head of the unit in the flow-water head-output relation curve of the unit, so as to obtain flow output relation points corresponding to a plurality of water heads.
Based on the content of the embodiment of the device, as an optional embodiment, the determining device for the water consumption rate characteristic curve of the hydropower station provided in the embodiment of the invention further includes: the second sub-module is configured to implement step 3 specifically including: step 3.1: arranging the flow-Mao Shuitou-output relation curve of each unit into graphs with the abscissa as an output value and the ordinate as a flow value, wherein the scales of the abscissa and the ordinate of each graph are the same; step 3.2: respectively extracting flow output relation graphs of the two units under the same water head, overlapping the horizontal coordinates of the two graphs, and inverting the vertical coordinates of the second unit; step 3.3: vertically moving the flow characteristic curve of the second machine set to enable the ordinate parts to be overlapped, the flow sum of each point of the two machine sets to be identical, drawing a horizontal line in the overlapped range, and respectively intersecting the two flow output relation curves, wherein the sum of the corresponding output at the two intersection points is the total output value of the two machine sets; drawing a plurality of horizontal lines in a longitudinal coordinate superposition range, repeating the process to obtain a total output change curve of the combination of the two units under the condition of the flow and the flow, wherein the maximum output on the total output change curve is the maximum output which can be sent out by the two units when the two units are combined, and recording the flow and the output value of each unit when the maximum output is obtained; step 3.4: the graph of the second machine set is moved up and down to obtain the maximum output corresponding to different flow rates when the two machine sets are combined, and the flow rate-Mao Shuitou-optimal output relation curve under the water head when the two machine sets are combined is obtained; step 3.5: and (3) carrying out the same calculation on each water head to obtain a flow-Mao Shuitou-optimal output curve cluster under the combined condition of the two units.
Based on the content of the embodiment of the device, as an optional embodiment, the determining device for the water consumption rate characteristic curve of the hydropower station provided in the embodiment of the invention further includes: the third sub-module is configured to implement step 4 specifically including: adding other units one by one based on the flow characteristic curves of the two units, and repeating the calculation in the step 3 to obtain a flow-Mao Shuitou-optimal output relation curve when the multiple units are combined; the flow-Mao Shuitou-output relation curve when all the hydropower station units are combined is the flow-Mao Shuitou-optimal output relation curve of the hydropower station.
Based on the content of the embodiment of the device, as an optional embodiment, the determining device for the water consumption rate characteristic curve of the hydropower station provided in the embodiment of the invention further includes: a fourth sub-module, configured to implement step 6 further includes: and according to the characteristic that the water consumption rate is uniquely determined by the flow and the output, converting the output flow-reservoir water level-optimal output relation curve cluster of the hydropower station into a water consumption rate-reservoir water level-output flow relation curve cluster of the hydropower station, namely a water consumption rate characteristic curve of the hydropower station.
The method of the embodiment of the invention is realized by the electronic equipment, so that the related electronic equipment is necessary to be introduced. To this end, an embodiment of the present invention provides an electronic device, as shown in fig. 3, including: at least one processor (processor), a communication interface (Communications Interface), at least one memory (memory) and a communication bus, wherein the at least one processor, the communication interface, and the at least one memory communicate with each other via the communication bus. The at least one processor may invoke logic instructions in the at least one memory to perform all or part of the steps of the methods provided by the various method embodiments described above.
Further, the logic instructions in at least one of the memories described above may be implemented in the form of a software functional unit and may be stored in a computer-readable storage medium when sold or used as a stand-alone product. Based on this understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
The apparatus embodiments described above are merely illustrative, wherein the elements illustrated as separate elements may or may not be physically separate, and the elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.
From the above description of the embodiments, it will be apparent to those skilled in the art that the embodiments may be implemented by means of software plus necessary general hardware platforms, or may be implemented by hardware. Based on this understanding, the foregoing technical solution may be embodied essentially or in a part contributing to the prior art in the form of a software product, which may be stored in a computer readable storage medium, such as ROM/RAM, a magnetic disk, an optical disk, etc., including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method described in the respective embodiments or some parts of the embodiments.
The flowcharts and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present invention. Based on this knowledge, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
It should be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. A method for determining a water consumption rate characteristic of a hydropower station, comprising: step 1: on the basis of a set output-water purification head-flow relation curve, combining a set power generation reference flow-water head loss relation curve, searching water head loss corresponding to flow in set output-water purification head-flow data, and adding the water head loss to the water purification head to obtain output-Mao Shuitou-flow relation data; step 2: fitting a flow and output relation curve under the equal water head, and drawing a unit flow-Mao Shuitou-output relation curve; step 3: acquiring a flow-Mao Shuitou-output relation curve when two units are combined; step 4: adding other units one by one based on the flow-Mao Shuitou-optimal output curve clusters of the two units, and respectively obtaining the output flow-Mao Shuitou-optimal output relation curve clusters of the hydropower station according to the same calculation in the step 3; step 5: according to the unique determined characteristics of the water head of the hydropower station by the reservoir water level and the delivery flow, converting the delivery flow-Mao Shuitou-optimal output relation curve cluster of the hydropower station into the delivery flow-reservoir water level-optimal output relation curve cluster of the hydropower station; step 6: and (3) uniquely determining the flow and the output according to the water consumption rate, and converting the ex-warehouse flow-reservoir water level-optimal output relation curve cluster of the hydropower station into a water consumption rate-reservoir water level-ex-warehouse flow relation curve cluster of the hydropower station, namely a hydropower station water consumption rate characteristic curve.
2. The method for determining a water consumption rate characteristic of a hydropower station according to claim 1, wherein the step 1 specifically comprises: in the power generation process, the flow of each unit is different, the water purifying heads are different, and Mao Shuitou is the same, and the relation between the water purifying heads and the water head of the units is as follows: the unit Mao Shuitou, also called hydropower head, has the expression: h sdz ＝Z sy -Z xy The method comprises the steps of carrying out a first treatment on the surface of the The unit water purification head, also called water turbine head, has the expression: h T ＝Z sy -Z xy - Δh; wherein H is sdz Is a hydropower station water head; z is Z sy Is the upstream water level; z is Z xy Is the downstream water level; h T Is a water purifying head; Δh is head loss of the entire water diversion system; and adding the water head loss of the unit when the corresponding flow is added to the water purifying head of the unit in the flow-water head-output relation curve of the unit, so as to obtain flow output relation points corresponding to a plurality of water heads.
3. The method for determining a water consumption rate characteristic of a hydropower station according to claim 1, wherein the step 3 specifically comprises: step 3.1: arranging the flow-Mao Shuitou-output relation curve of each unit into graphs with the abscissa as an output value and the ordinate as a flow value, wherein the scales of the abscissa and the ordinate of each graph are the same; step 3.2: respectively extracting flow output relation graphs of the two units under the same water head, overlapping the horizontal coordinates of the two graphs, and inverting the vertical coordinates of the second unit; step 3.3: vertically moving the flow characteristic curve of the second machine set to enable the ordinate parts to be overlapped, the flow sum of each point of the two machine sets to be identical, drawing a horizontal line in the overlapped range, and respectively intersecting the two flow output relation curves, wherein the sum of the corresponding output at the two intersection points is the total output value of the two machine sets; drawing a plurality of horizontal lines in a longitudinal coordinate superposition range, repeating the process to obtain a total output change curve of the combination of the two units under the condition of the flow and the flow, wherein the maximum output on the total output change curve is the maximum output which can be sent out by the two units when the two units are combined, and recording the flow and the output value of each unit when the maximum output is obtained; step 3.4: the graph of the second machine set is moved up and down to obtain the maximum output corresponding to different flow rates when the two machine sets are combined, and the flow rate-Mao Shuitou-optimal output relation curve under the water head when the two machine sets are combined is obtained; step 3.5: and (3) carrying out the same calculation on each water head to obtain a flow-Mao Shuitou-optimal output curve cluster under the combined condition of the two units.
4. The method for determining a water consumption rate characteristic of a hydropower station according to claim 1, wherein the step 4 specifically comprises: adding other units one by one based on the flow characteristic curves of the two units, and repeating the calculation in the step 3 to obtain a flow-Mao Shuitou-optimal output relation curve when the multiple units are combined; the flow-Mao Shuitou-output relation curve when all the hydropower station units are combined is the flow-Mao Shuitou-optimal output relation curve of the hydropower station.
5. The method of determining a hydropower station water consumption rate characteristic according to claim 1, wherein the step 5 further comprises: and according to the unique determined characteristics of the water head of the hydropower station by the reservoir water level and the delivery flow, converting the delivery flow-Mao Shuitou-optimal output relation curve cluster of the hydropower station into the delivery flow-reservoir water level-optimal output relation curve cluster of the hydropower station.
6. The method for determining a hydropower station water consumption rate characteristic curve according to claim 1, wherein step 6 converts a hydropower station water consumption rate-reservoir water level-optimal output relation curve cluster into a hydropower station water consumption rate-reservoir water level-water output flow relation curve cluster, namely a hydropower station water consumption rate characteristic curve, according to the characteristic that the water consumption rate is uniquely determined by flow and output.
7. A hydropower station water consumption rate characteristic determining apparatus, comprising: the first main module is used for searching the head loss corresponding to the flow in the unit output-water purification head-flow data by combining the unit power generation reference flow-head loss relation curve on the basis of the unit output-water purification head-flow relation curve, and adding the head loss to the water purification head to obtain output-Mao Shuitou-flow relation data; the second main module is used for realizing fitting of flow and output relation curves under the water head and the like, and drawing a unit flow-Mao Shuitou-output relation curve cluster; the third main module is used for obtaining a flow-Mao Shuitou-output relation curve cluster when the two units are combined; a fourth main module, configured to implement adding other units one by one based on the flow-Mao Shuitou-optimal output curve clusters of the two units, and obtaining a flow-Mao Shuitou-optimal output relation curve cluster of the hydropower station according to the same calculation in the step 3; a fifth main module, configured to implement a function of converting the ex-warehouse flow-Mao Shuitou-optimal output relationship curve cluster of the hydropower station into an ex-warehouse flow-reservoir water level-optimal output relationship curve cluster of the hydropower station according to a characteristic that a water head of the hydropower station is uniquely determined by the reservoir water level and the ex-warehouse flow; and the sixth main module is used for converting the ex-warehouse flow-reservoir water level-optimal output relation curve cluster of the hydropower station into a hydropower station water consumption rate-reservoir water level-ex-warehouse flow relation curve cluster, namely a hydropower station water consumption rate characteristic curve, according to the characteristic that the water consumption rate is uniquely determined by the flow and the output.
8. An electronic device, comprising:
at least one processor, at least one memory, and a communication interface; wherein,,
the processor, the memory and the communication interface are communicated with each other;
the memory stores program instructions executable by the processor, the processor invoking the program instructions to perform the method of any of claims 1-6.
9. A non-transitory computer readable storage medium storing computer instructions that cause the computer to perform the method of any one of claims 1 to 6.
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