CN106192863A - A kind of power station installed capacity and annual electricity generating capacity evaluation method - Google Patents
A kind of power station installed capacity and annual electricity generating capacity evaluation method Download PDFInfo
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- CN106192863A CN106192863A CN201610527818.8A CN201610527818A CN106192863A CN 106192863 A CN106192863 A CN 106192863A CN 201610527818 A CN201610527818 A CN 201610527818A CN 106192863 A CN106192863 A CN 106192863A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B1/00—Equipment or apparatus for, or methods of, general hydraulic engineering, e.g. protection of constructions against ice-strains
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Abstract
The invention discloses a kind of power station installed capacity and annual electricity generating capacity evaluation method, it includes: step 1, calculating dam site above basin annual mean runoff；Step 2, calculated water head lose；Step 3, calculating installed capacity；Step 4, calculating annual utilization hours；Step 5, calculating annual electricity generating capacity；Solve prior art and the prediction of power station installed capacity and generated energy is used historical data predicted method, for some small hydropower stations owing to historical data is not complete or loses, cause estimating the technical problems such as result is inaccurate.
Description
Technical field
The invention belongs to power station installed capacity and generated energy and calculate field, particularly relate to a kind of power station installed capacity and
Annual electricity generating capacity evaluation method.
Background technology
At water-power plant, the installed capacity in following a period of time and generated energy are predicted extremely important, existing
In technology, history installed capacity and generated energy that the prediction of Future Installed Capacity and generated energy relies primarily on this electric station enter
Row statistical analysis, adopts and needs history installed capacity and generated energy data in such a way, in order to improve forecasting accuracy, typically
Needing history installed capacity and the generated energy data of more than 20 years, for some small hydropower stations, possible historical data is the most complete
Or lose, the accuracy that can cause estimated data is the highest, and estimation result is inaccurate.
Summary of the invention:
The technical problem to be solved in the present invention: provide a kind of power station installed capacity and annual electricity generating capacity evaluation method, to solve
Certainly prior art uses historical data predicted method to the prediction of power station installed capacity and generated energy, for some small hydropower stations by
In historical data, complete or loss, causes estimating the technical problems such as result is inaccurate.
Technical solution of the present invention:
A kind of power station installed capacity and annual electricity generating capacity evaluation method, it includes:
Step 1, calculating dam site above basin annual mean runoff；
Step 2, calculated water head lose；
Step 3, calculating installed capacity；
Step 4, calculating annual utilization hours；
Step 5, calculating annual electricity generating capacity.
Calculating dam site above basin annual mean runoff computing formula described in step 1 is:
In formula:For annual mean runoff, m3/s；For average annual rainfall mm in basin；For Watershed Runoff coefficient；
For the deep mm of Watershed Runoff；F is dam site above basin drainage area km2。
Described in step 2, calculation of head losses formula is: ξ=kQ2, in formula: ξ is loss of flood peak m, and Q is
Generating maximum quotes flow m3/ s, k are waterhead fall, k=0.0073.
Calculating installed capacity computing formula described in step 3 is
In N=A × Q × H formula, N is installed capacity kW, and A is power factor, and Q quotes flow m for generating maximum3/s。
Calculating annual utilization hours computing formula described in step 4 is:In formula: γ is water yield profit
With coefficient,Enter for annual warehouse-in generating run-off m3/s.
Calculating annual electricity generating capacity computing formula described in step 5 is: E=N × T, in formula: E is that generated energy kW h, N are for generating electricity
Exert oneself kW, and T is generating dutation.
The method have the benefit that
Use computational methods of the present invention estimation power station installed capacity and annual electricity generating capacity, do not rely on generating data letter over the years
Breath, and calculation is simple, and result precision is high, solves prior art to power station installed capacity and the prediction of generated energy
Use historical data predicted method, for some small hydropower stations owing to historical data is not complete or loses, cause estimating that result is inaccurate
Etc. technical problem.
Detailed description of the invention:
A kind of power station installed capacity and annual electricity generating capacity evaluation method, it includes:
Step 1, calculating dam site above basin annual mean runoff；
Calculating dam site above basin annual mean runoff computing formula described in step 1 is:
In formula:For annual mean runoff, m3/s；For average annual rainfall mm in basin；α is Watershed Runoff coefficient；For the deep mm of Watershed Runoff；F is dam site above basin drainage area km2。
Step 2, calculated water head lose；
Described in step 2, calculation of head losses formula is: ξ=kQ2, in formula: ξ is loss of flood peak m, and Q quotes for generating maximum
Flow m3/ s, k are waterhead fall, k=0.0073.
Step 3, calculating installed capacity；
Calculating installed capacity computing formula described in step 3 is
In N=A × Q × H formula, N is installed capacity kW, i.e. generated output.A is power factor, and general value is 8, and Q is for sending out
Electricity maximum quotes flow m3/s.When estimating installed capacity, value isH generates electricity net water head, H=HReasonξ, HReason
For theoretical head, ξ is loss of flood peak m.
Step 4, calculating annual utilization hours；
Calculating annual utilization hours computing formula described in step 4 is:In formula: γ is water yield profit
With coefficient, γ=(0～1), typically take about 0.9,Enter for annual warehouse-in generating run-off m3/s。
Step 5, calculating annual electricity generating capacity.
Calculating annual electricity generating capacity computing formula described in step 5 is: E=N × T, in formula: E is that generated energy kW h, N are for generating electricity
Exert oneself kW, and T is generating dutation h, completely sends out time, also referred to as annual utilization hours, relevant with generated output N to dam safety evaluation performance has
Closing, N is the biggest, and T is the least, and dam safety evaluation performance is the best, and T can be gradually increased, and the maximum of T is 8760.
Claims (6)
1. power station installed capacity and an annual electricity generating capacity evaluation method, it includes:
Step 1, calculating dam site above basin annual mean runoff；
Step 2, calculated water head lose；
Step 3, calculating installed capacity；
Step 4, calculating annual utilization hours；
Step 5, calculating annual electricity generating capacity.
A kind of power station installed capacity the most according to claim 1 and annual electricity generating capacity evaluation method, it is characterised in that: step
Calculating dam site above basin annual mean runoff computing formula described in 1 is:
In formula:For annual mean runoff, m3/s；For average annual rainfall mm in basin；α is Watershed Runoff coefficient；For stream
Territory depth of runoff mm；F is dam site above basin drainage area km2。
A kind of power station installed capacity the most according to claim 1 and annual electricity generating capacity evaluation method, it is characterised in that: step
Described in 2, calculation of head losses formula is: ξ=kQ2, in formula: ξ is loss of flood peak m, and Q quotes flow m for generating maximum3/ s, k are
Waterhead fall, k=0.0073.
A kind of power station installed capacity the most according to claim 1 and annual electricity generating capacity evaluation method, it is characterised in that: step
Calculating installed capacity computing formula described in 3 is
In N=A × Q × H formula, N is installed capacity kW, and A is power factor, and Q quotes flow m for generating maximum3/ s, H generate electricity water purification
Head.
A kind of power station installed capacity the most according to claim 1 and annual electricity generating capacity evaluation method, it is characterised in that: step
Calculating annual utilization hours computing formula described in 4 is:In formula: γ is water efficiency of hydropower plant,Enter for
Annual warehouse-in generating run-off m3/s.
A kind of power station installed capacity the most according to claim 1 and annual electricity generating capacity evaluation method, it is characterised in that: step
Calculating annual electricity generating capacity computing formula described in 5 is: E=N × T, in formula: E be generated energy kW h, N be generated output kW, T for send out
The electricity time.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107122939A (en) * | 2017-04-28 | 2017-09-01 | 厦门大学 | A kind of unified prediction of storage amount and outbound amount |
| CN108154268A (en) * | 2017-12-25 | 2018-06-12 | 国网福建省电力有限公司 | The method of quick estimation Small Hydropower Stations generated energy |
| CN108256773A (en) * | 2018-01-25 | 2018-07-06 | 华电电力科学研究院有限公司 | A kind of quantitative analysis method of built small power station's generating capacity assessment indicator system suitable for venture evaluation |
| CN109636140A (en) * | 2018-11-27 | 2019-04-16 | 广东电网有限责任公司韶关供电局 | Consider the micro-capacitance sensor medium-small hydropower plants abandoning energy calculation method of run-off |
| CN109687506A (en) * | 2018-11-27 | 2019-04-26 | 广东电网有限责任公司韶关供电局 | Micro-capacitance sensor medium-small hydropower plants generated energy prediction technique |
| CN112287301A (en) * | 2020-10-29 | 2021-01-29 | 东莞理工学院 | Global scale hydroelectric power generation capacity evaluation method based on global hydrological model |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107122939A (en) * | 2017-04-28 | 2017-09-01 | 厦门大学 | A kind of unified prediction of storage amount and outbound amount |
| CN107122939B (en) * | 2017-04-28 | 2021-03-09 | 厦门大学 | Joint prediction method for warehousing quantity and ex-warehouse quantity |
| CN108154268A (en) * | 2017-12-25 | 2018-06-12 | 国网福建省电力有限公司 | The method of quick estimation Small Hydropower Stations generated energy |
| CN108154268B (en) * | 2017-12-25 | 2022-07-05 | 国网福建省电力有限公司 | Method for rapidly estimating group power generation quantity of small hydropower stations |
| CN108256773A (en) * | 2018-01-25 | 2018-07-06 | 华电电力科学研究院有限公司 | A kind of quantitative analysis method of built small power station's generating capacity assessment indicator system suitable for venture evaluation |
| CN109636140A (en) * | 2018-11-27 | 2019-04-16 | 广东电网有限责任公司韶关供电局 | Consider the micro-capacitance sensor medium-small hydropower plants abandoning energy calculation method of run-off |
| CN109687506A (en) * | 2018-11-27 | 2019-04-26 | 广东电网有限责任公司韶关供电局 | Micro-capacitance sensor medium-small hydropower plants generated energy prediction technique |
| CN109687506B (en) * | 2018-11-27 | 2022-05-17 | 广东电网有限责任公司韶关供电局 | Method for predicting power generation capacity of small hydropower stations in micro-grid |
| CN112287301A (en) * | 2020-10-29 | 2021-01-29 | 东莞理工学院 | Global scale hydroelectric power generation capacity evaluation method based on global hydrological model |
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Application publication date: 20161207 |