CN110717626B - Optimal operation evaluation method for annual adjustment reservoir hydropower station - Google Patents
Optimal operation evaluation method for annual adjustment reservoir hydropower station Download PDFInfo
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- G—PHYSICS
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- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/70—Smart grids as climate change mitigation technology in the energy generation sector
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
Abstract
The invention provides an optimization operation evaluation method of a annual adjustment reservoir hydropower station, which is used for counting the actual power generation condition of the annual adjustment reservoir hydropower station which does not adopt the optimization operation, collecting and comparing the results of the optimization operation, and evaluating the optimization operation results, wherein the evaluation results can be used for guiding the operation of the reservoir hydropower station so as to determine a reasonable optimization operation mode.
Description
Technical Field
The invention relates to hydraulic engineering, in particular to an optimized operation evaluation method for a year-regulated reservoir hydropower station.
Background
The reservoir type hydropower station is a water conservancy structure form for generating electricity by using a reservoir, and the reservoir can carry out necessary adjustment on natural runoff due to the construction of the reservoir, so that the overall utilization efficiency of water resources is improved. Compared with a radial-flow hydropower station, the reservoir hydropower station is characterized in that the runoff adjustment performance is different, and the power generation heads of the units are different.
The reservoir can be divided into years of regulation, years of regulation and the like according to the regulation performance, and for a year-regulated reservoir hydropower station, water consumption is required to be completed in one regulation period, namely the year-regulated reservoir does not have the capacity of year-across regulation. In order to objectively evaluate the utilization degree of the annual adjustment reservoir to the runoff in the adjustment period, the invention constructs an optimal operation evaluation method of the annual adjustment reservoir hydropower station, which is used for objectively evaluating the benefit of the annual adjustment reservoir hydropower station in an optimal operation mode so as to guide the optimal operation of the annual adjustment reservoir hydropower station.
Disclosure of Invention
Based on the above, the invention provides an optimized operation evaluation method of a year-regulated reservoir hydropower station, the regulation performance of the reservoir is year regulation, the hydropower station is a reservoir hydropower station, the hydropower station draws water from the reservoir to generate electricity, the evaluation method is used for evaluating the effect of the hydropower station after adopting optimized operation, and the evaluation method specifically comprises the following steps:
s1: collecting years of actual flow and years of actual power generation of a year-regulated reservoir hydropower station, wherein the years of actual flow refers to the annual water quantity of a reservoir with monitoring data; the years of actual power generation amount is the annual actual power generation amount of the hydropower station;
s2: carrying out frequency statistics on the water quantity of the reservoir in the past year, wherein the frequency statistics corresponds to the actual power generation quantity of the hydropower station one by one;
s3: according to the sequence from the large frequency to the small frequency, the annual water quantity and the corresponding actual power generation quantity of the reservoir are arranged, and the corresponding average kilowatt water consumption rate is calculated according to the annual actual power generation quantity divided by the actual power generation quantity;
s4: starting from a calculation period, a power station operates in an optimized operation mode, the actual water supply quantity of the reservoir and the actual power generation quantity of the hydropower station are counted, and the average unit kilowatt water consumption rate of the hydropower station is calculated according to the fact that the actual power generation quantity is divided by the actual water supply quantity of the reservoir;
s5: comparing the actual incoming water quantity of the reservoir in the step S4 with the frequency arrangement in the step S3, calculating the first frequency of the actual incoming water quantity of the reservoir in the step S4, finding out two actual incoming water quantity frequencies closest to the first frequency, wherein the two actual incoming water quantity frequencies are respectively larger than and smaller than the first frequency, finding out the actual incoming water quantity, the actual power generation quantity and the average unit kilowatt water consumption rate corresponding to the two actual incoming water quantity frequencies, and calculating the first power generation quantity and the first average unit kilowatt water consumption rate corresponding to the first frequency according to a difference method;
s6: the generating capacity in the optimized operation mode in the step S4 is divided by the first generating capacity in the step S5, the first average unit kilowatt water consumption rate in the step S5 is divided by the average unit kilowatt water consumption rate in the optimized operation mode in the step S4, and the generating capacity coefficient and the water consumption rate coefficient are obtained through calculation;
s7: when the average value of the generated energy coefficient and the water consumption rate coefficient is larger than 1 plus a set value, optimizing the operation evaluation result to be excellent; when the average value of the generated energy coefficient and the water consumption rate coefficient is smaller than 1 minus a set value, optimizing the operation evaluation result to be a difference; and when the average value of the generated energy coefficient and the water consumption rate coefficient is larger than 1 minus the set value and smaller than 1 plus the set value, the evaluation result is the middle.
Preferably, the power station is operated in an optimal operation mode, namely, the reservoir hydropower station optimal operation theory is adopted to guide the reservoir hydropower station optimal operation, and the reservoir hydropower station optimal operation theory comprises a reservoir optimal scheduling theory and a hydropower station in-plant optimal operation theory.
Preferably, the step S3 may employ a P-iii type curve statistical method in hydrologic statistics in order of frequency from high to low.
Preferably, the start of the calculation period in step S4 may be selected to be the end of the reservoir water supply period or 1 month before the flood period comes or each year, and the period is one year.
Preferably, the annual water amount of the reservoir and the annual actual power generation amount of the hydropower station in step S1 correspond to annual statistics at the beginning of the calculation period in step S4.
Preferably, the statistical result in step S3 forms a database, and the database is stored by a computer, so that the data can be conveniently fetched and stored.
Preferably, the method is characterized in that: the set value is 0.05 or 0.1 or 0.15.
Preferably, the actual water inflow is obtained by measuring flow through a flow measuring facility of the reservoir.
The invention has the advantages that:
the invention provides an optimization operation evaluation method of a annual adjustment reservoir hydropower station, which is used for counting the actual power generation condition of the annual adjustment reservoir hydropower station which does not adopt the optimization operation, collecting and comparing the results of the optimization operation, and evaluating the optimization operation results, wherein the evaluation results can be used for guiding the operation of the reservoir hydropower station so as to determine a reasonable optimization operation mode.
The specific embodiment is as follows: the structure defined by the present invention is specifically explained below with reference to the following embodiments.
The invention provides an optimized operation evaluation method of a year-regulated reservoir hydropower station, wherein the regulation performance of the reservoir is year regulation, the hydropower station is a reservoir hydropower station, the hydropower station draws water from the reservoir to generate electricity, the evaluation method is used for evaluating the effect of the hydropower station after adopting optimized operation, and the evaluation method specifically comprises the following steps:
s1: collecting years of actual flow and years of actual power generation of a year-regulated reservoir hydropower station, wherein the years of actual flow refers to the annual water quantity of a reservoir with monitoring data; the years of actual power generation amount is the annual actual power generation amount of the hydropower station;
s2: carrying out frequency statistics on the water quantity of the reservoir in the past year, wherein the frequency statistics corresponds to the actual power generation quantity of the hydropower station one by one;
s3: according to the sequence from the large frequency to the small frequency, the annual water quantity and the corresponding actual power generation quantity of the reservoir are arranged, and the corresponding average kilowatt water consumption rate is calculated according to the annual actual power generation quantity divided by the actual power generation quantity;
s4: starting from a calculation period, a power station operates in an optimized operation mode, the actual water supply quantity of the reservoir and the actual power generation quantity of the hydropower station are counted, and the average unit kilowatt water consumption rate of the hydropower station is calculated according to the fact that the actual power generation quantity is divided by the actual water supply quantity of the reservoir;
s5: comparing the actual incoming water quantity of the reservoir in the step S4 with the frequency arrangement in the step S3, calculating the first frequency of the actual incoming water quantity of the reservoir in the step S4, finding out two actual incoming water quantity frequencies closest to the first frequency, wherein the two actual incoming water quantity frequencies are respectively larger than and smaller than the first frequency, finding out the actual incoming water quantity, the actual power generation quantity and the average unit kilowatt water consumption rate corresponding to the two actual incoming water quantity frequencies, and calculating the first power generation quantity and the first average unit kilowatt water consumption rate corresponding to the first frequency according to a difference method;
s6: the generating capacity in the optimized operation mode in the step S4 is divided by the first generating capacity in the step S5, the first average unit kilowatt water consumption rate in the step S5 is divided by the average unit kilowatt water consumption rate in the optimized operation mode in the step S4, and the generating capacity coefficient and the water consumption rate coefficient are obtained through calculation;
s7: when the average value of the generated energy coefficient and the water consumption rate coefficient is larger than 1 plus a set value, optimizing the operation evaluation result to be excellent; when the average value of the generated energy coefficient and the water consumption rate coefficient is smaller than 1 minus a set value, optimizing the operation evaluation result to be a difference; and when the average value of the generated energy coefficient and the water consumption rate coefficient is larger than 1 minus the set value and smaller than 1 plus the set value, the evaluation result is the middle.
Preferably, the power station is operated in an optimal operation mode, namely, the reservoir hydropower station optimal operation theory is adopted to guide the reservoir hydropower station optimal operation, and the reservoir hydropower station optimal operation theory comprises a reservoir optimal scheduling theory and a hydropower station in-plant optimal operation theory.
Preferably, the step S3 may employ a P-iii type curve statistical method in hydrologic statistics in order of frequency from high to low.
Preferably, the start of the calculation period in step S4 may be selected to be the end of the reservoir water supply period or 1 month before the flood period comes or each year, and the period is one year.
Preferably, the annual water amount of the reservoir and the annual actual power generation amount of the hydropower station in step S1 correspond to annual statistics at the beginning of the calculation period in step S4.
Preferably, the statistical result in step S3 forms a database, and the database is stored by a computer, so that the data can be conveniently fetched and stored.
Preferably, the method is characterized in that: the set value is 0.05 or 0.1 or 0.15.
Preferably, the actual water inflow is obtained by measuring flow through a flow measuring facility of the reservoir, such as an ultrasonic measuring instrument.
The differential calculation mode is to find out the positions of the first frequency at two actual incoming flow frequencies, and then calculate the first power generation amount and the first average unit kilowatt water consumption rate corresponding to the first frequency according to the actual power generation amount and the average unit kilowatt water consumption rate corresponding to the two actual incoming flow frequencies by a differential comparison method.
Under the general condition, an optimal operation mode is adopted, so that an optimal evaluation result can be obtained, and if the result is bad or medium, the unit operation reason is searched or whether the optimal mode is reasonable; and through reformulation of the optimized operation scheme, the optimized operation evaluation is carried out by continuously using the evaluation method, so that the power generation benefit is improved.
If the evaluation result is good, the optimized operation result is proved to be good, and the optimized operation mode in the step S4 is continuously adopted for operation; if the evaluation result is medium or poor, the optimal operation mode should be readjusted, and the execution is continued according to the evaluation method until the optimal operation result is good.
The reservoir hydropower station optimizing evaluation method for the season adjustment or the week adjustment or the ten-day adjustment or the month adjustment or the day adjustment is only needed to replace the adjustment period of the year adjustment with the corresponding season or week or ten-day or month or day, and other evaluation methods are the same as those of the year adjustment reservoir hydropower station.
The above-described embodiments are only preferred embodiments of the present invention, and the scope of the present invention should not be construed as being limited to the specific forms set forth by the examples, but also includes equivalent technical means as will occur to those skilled in the art based on the inventive concept.
Claims (8)
1. The utility model provides an optimizing operation evaluation method of year regulation reservoir hydroelectric power station, the regulation performance of reservoir is the year regulation, the hydroelectric power station is reservoir type hydroelectric power station, and the hydroelectric power station draws water from the reservoir and generates electricity, the evaluation method is used for adopting the effect after optimizing operation to the hydroelectric power station to carry out the evaluation, and the evaluation method specifically includes following steps:
s1: collecting years of actual flow and years of actual power generation of a year-regulated reservoir hydropower station, wherein the years of actual flow refers to the annual water quantity of a reservoir with monitoring data; the years of actual power generation amount is the annual actual power generation amount of the hydropower station;
s2: carrying out frequency statistics on the water quantity of the reservoir in the past year, wherein the frequency statistics corresponds to the actual power generation quantity of the hydropower station one by one;
s3: according to the sequence from the large frequency to the small frequency, the annual water quantity and the corresponding actual power generation quantity of the reservoir are arranged, and the corresponding average kilowatt water consumption rate is calculated according to the annual actual power generation quantity divided by the actual power generation quantity;
s4: starting from a calculation period, a power station operates in an optimized operation mode, the actual water supply quantity of the reservoir and the actual power generation quantity of the hydropower station are counted, and the average unit kilowatt water consumption rate of the hydropower station is calculated according to the fact that the actual power generation quantity is divided by the actual water supply quantity of the reservoir;
s5: comparing the actual incoming water quantity of the reservoir in the step S4 with the frequency arrangement in the step S3, calculating the first frequency of the actual incoming water quantity of the reservoir in the step S4, finding out two actual incoming water quantity frequencies closest to the first frequency, wherein the two actual incoming water quantity frequencies are respectively larger than and smaller than the first frequency, finding out the actual incoming water quantity, the actual power generation quantity and the average unit kilowatt water consumption rate corresponding to the two actual incoming water quantity frequencies, and calculating the first power generation quantity and the first average unit kilowatt water consumption rate corresponding to the first frequency according to a difference method;
s6: the generating capacity in the optimized operation mode in the step S4 is divided by the first generating capacity in the step S5, the first average unit kilowatt water consumption rate in the step S5 is divided by the average unit kilowatt water consumption rate in the optimized operation mode in the step S4, and the generating capacity coefficient and the water consumption rate coefficient are obtained through calculation;
s7: when the average value of the generated energy coefficient and the water consumption rate coefficient is larger than 1 plus a set value, optimizing the operation evaluation result to be excellent; when the average value of the generated energy coefficient and the water consumption rate coefficient is smaller than 1 minus a set value, optimizing the operation evaluation result to be a difference; and when the average value of the generated energy coefficient and the water consumption rate coefficient is larger than 1 minus the set value and smaller than 1 plus the set value, the evaluation result is the middle.
2. The method for evaluating the optimal operation of a yearly regulated reservoir hydroelectric power plant of claim 1, wherein: the power station operating in the optimal operation mode refers to guiding the reservoir hydropower station to operate optimally by adopting a reservoir hydropower station optimal operation theory, wherein the reservoir hydropower station optimal operation theory comprises a reservoir optimal scheduling theory and a hydropower station in-plant optimal operation theory.
3. The method for evaluating the optimal operation of a yearly regulated reservoir hydroelectric power plant of claim 1, wherein: the step S3 may employ a P-III type curve statistical method in hydrologic statistics according to the order of the frequencies from the high to the low.
4. The method for evaluating the optimal operation of a yearly regulated reservoir hydroelectric power plant of claim 1, wherein: the start of the calculation period in step S4 may be selected to be the end of the reservoir water supply period or 1 month before the flood period comes or each year, and the period is one year.
5. The method for evaluating the optimal operation of a yearly regulated reservoir hydroelectric power plant of claim 4, wherein: the annual water amount of the reservoir and the annual actual power generation amount of the hydropower station in the step S1 correspond to annual statistics at the beginning of the calculation period in the step S4.
6. The method for evaluating the optimal operation of a yearly regulated reservoir hydroelectric power plant of claim 4, wherein: and the statistical result in the step S3 forms a database and is stored by a computer, so that the data can be conveniently fetched and stored.
7. A method of evaluating the optimal operation of a yearly regulated reservoir hydroelectric power plant according to any of claims 1 to 6, wherein: the set value is 0.05 or 0.1 or 0.15.
8. A method of evaluating the optimal operation of a yearly regulated reservoir hydroelectric power plant according to any of claims 1 to 7, wherein: the actual water supply quantity is obtained by measuring flow through a flow measuring facility of the reservoir.
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| US9811061B1 (en) * | 2001-05-18 | 2017-11-07 | The Energy Authority, Inc. | Method for management and optimization of hydropower generation and consumption |
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| US9811061B1 (en) * | 2001-05-18 | 2017-11-07 | The Energy Authority, Inc. | Method for management and optimization of hydropower generation and consumption |
| CN107423258A (en) * | 2017-06-30 | 2017-12-01 | 华电电力科学研究院 | Energy utilization improvement rate innovatory algorithm and step power station scheduling benefit evaluation system |
| CN107392446A (en) * | 2017-07-03 | 2017-11-24 | 华中科技大学 | A kind of step power station scheduling scheme evaluation method based on sensitivity analysis |
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