A method for measuring the completion rate of water energy comprehensive power generation of a hydropower plant

Abstract

The present application relates to a kind of water power plant water energy comprehensive power generation completion rate measurement method.The method provides the calculation method of water energy comprehensive power generation completion rate of runoff type low water head hydropower plant and the calculation method of water energy comprehensive power generation completion rate of runoff type high water head hydropower plant, to measure and calculate the water energy comprehensive power generation completion rate (HPR) of statistical year, overcome the influence of statistical power generation year rainfall water regime, system solves the existing calculation method loses the standard of real measurement water power plant annual production and operation efficiency, lacks the essential reference value for real assessment of the production performance of hydropower plant, and the problem that assessment index does not have the good guiding effect of driving production enthusiasm.Fully tap the potential of hydropower plant equipment and drive personnel production energy, change "eat what the heaven provides" for "know the heaven and work" good situation.

Description

TECHNICAL FIELD

[0001] The application relates to a water energy comprehensive power generation completion rate calculation method for a hydropower plant. BACKGROUND

[0002] The existing hydropower plants generally use the "design power generation completion rate" to measure the annual production and operation efficiency of the hydropower plants, and the technical scheme for the calculation is: actual annual power generation amount / design annual power generation amount. In addition, the government checks the ecological discharge flow of the hydropower plants, and the commonly used optimization method is to use the design power generation completion rate with additional ecological discharge flow, and the technical scheme for the calculation is: (actual annual power generation amount + equivalent power generation amount of the ecological discharge flow) / design annual power generation amount, to form the design power generation completion rate with additional ecological discharge flow. The technical scheme of the calculation method of the "design power generation completion rate" and the "design power generation completion rate with additional ecological discharge flow" of the existing hydropower plants has the obvious characteristics of "more rain and more power generation, less rain and less power generation". Therefore, affected by the rainfall and water conditions of the whole year, in the case of dry years or even extremely dry years, the existing calculation method loses the standard for truly measuring the annual production and operation efficiency of the hydropower plants.

[0003] Existing technology 1: design power generation completion rate

[0004] Design power generation completion rate = actual annual power generation amount / design annual power generation amount

[0005] Existing technology 2: design power generation completion rate with additional ecological discharge flow

[0006] Design power generation completion rate with additional ecological discharge flow = (actual annual power generation amount + equivalent power generation amount of the ecological discharge flow) / design annual power generation amount

[0007] The technical scheme of the calculation method of the "design power generation completion rate" and the "design power generation completion rate with additional ecological discharge flow" of the existing hydropower plants completely depends on the "variable" - actual annual power generation amount, which is completely affected by the rainfall and water conditions of the statistical power generation year, and has great randomness and volatility, and the "constant" - design annual power generation amount, which is a theoretical calculation value in the design stage of the construction of the hydropower plant and is fixed during the whole life cycle of the hydropower plant. Therefore, the existing technical scheme has the obvious characteristic of "relying on the weather" of "more rain and more power generation, less rain and less power generation". Therefore, affected by the rainfall and water conditions of the statistical power generation year, in the case of dry years, extremely dry years, or even extreme cases of consecutive dry years, the existing calculation method loses the standard for truly measuring the annual production and operation efficiency of the hydropower plants, lacks the essential reference value for truly checking the production performance of the hydropower plants, and the checking index also does not have a good guiding effect on driving the production enthusiasm.

[0008] The disadvantage of prior art 1: it is greatly affected by statistical annual rainfall and water regime, has the significant feature of "relying on the weather" with "more rain, more generation, less rain, less generation", and lacks the statistical value of ecological discharge flow equivalent to power generation, losing the standard for measuring the annual production and operation efficiency of the hydropower plant.

[0009] The disadvantage of prior art 2: although the statistical value of ecological discharge flow equivalent to power generation is added, it is still greatly affected by statistical annual rainfall and water regime, has the significant feature of "relying on the weather" with "more rain, more generation, less rain, less generation", and loses the standard for measuring the annual production and operation efficiency of the hydropower plant. SUMMARY

[0010] The purpose of the present application is to solve the problem that the existing calculation method loses the real measurement of the completion rate of the power generation of the hydropower plant, and to provide a water energy comprehensive power generation completion rate calculation method for the hydropower plant.

[0011] To achieve the above purpose, the technical solution of the present application is: a water energy comprehensive power generation completion rate calculation method for the hydropower plant, comprising:

[0012] (I) Runoff type low-head hydropower plant water energy comprehensive power generation completion rate calculation

[0013] First, calculate the design power generation completion rate:

[0014] Obtain the design annual power generation and the annual actual power generation of all referenceable low-head hydropower plants in a certain basin, and calculate the design power generation completion rate = annual actual power generation / design annual power generation;

[0015] Second, calculate the low-head hydropower plant water energy comprehensive power generation completion rate:

[0016] If the design annual power generation of each low-head hydropower plant is Pn1, Pn2,..., Pnn, and the annual actual power generation is Pg1, Pg2,..., Pgn, calculate the upgrading rate F(%) and the efficiency E(%), and the measurement object is the low-head hydropower plant nm:

[0017]

[0018]

[0019] Then the low-head hydropower plant water energy comprehensive power generation completion rate calculation formula is:

[0020] HPR = 100% + F(%) + E(%)

[0021] Finally, if the design power generation completion rate is greater than the low-head hydropower plant water energy comprehensive power generation completion rate HPR, take the design power generation completion rate as HPR;

[0022] (ii) Runoff type high water head hydropower plant water energy comprehensive power generation completion rate calculation

[0023] First, calculate the design power generation completion rate:

[0024] Select the adjacent upper and lower high water head hydropower plants as the reference object, obtain the design power generation, and calculate the design power generation completion rate = annual actual power generation / design annual power generation.

[0025] Second, calculate the high water head hydropower plant water energy comprehensive power generation completion rate:

[0026] If the design annual power generation of the upper and lower high water head hydropower plants is Pn1 and Pn2 respectively, the annual actual power generation is Pg1 and Pg2 respectively, the installed capacity is G1 and G2 respectively, and the reservoir capacity is C1 and C2 respectively, calculate the high water head hydropower plant water energy comprehensive power generation completion rate:

[0027]

[0028] Among them, DGC is the design comparison coefficient, GC is the power generation comparison coefficient, GCR is the statistical completion rate comparison coefficient, CGCR is the statistical completion rate comparison coefficient, which is the arithmetic average of the completion rate comparison coefficients of the current year and the previous years during the statistical period;

[0029] Finally, if the design power generation completion rate is greater than the high water head hydropower plant water energy comprehensive power generation completion rate HPR, take the design power generation completion rate as HPR.

[0030] Compared with the prior art, the present application has the following beneficial effects:

[0031] 1. The runoff type low water head hydropower plant water energy comprehensive power generation completion rate calculation method of the present application calculates the statistical annual water energy comprehensive power generation completion rate (HPR), overcomes the influence of statistical power generation rainfall and water regime, and solves the problems that the existing calculation method loses the true measurement standard of the annual production and operation efficiency of the hydropower plant, lacks the essential reference value for truly assessing the production performance of the hydropower plant, and the assessment index does not have a good guiding effect on driving production enthusiasm. Fully tap the potential of hydropower plant equipment and drive the production energy of personnel, and change the situation of "relying on the weather" to "knowing the weather and making it".

[0032] 2、The application discloses a runoff type high-water-head hydroelectric plant water energy comprehensive generation capacity completion rate calculation method, and measures and calculates a statistical annual water energy comprehensive generation capacity completion rate (HPR), overcomes the influence of statistical annual rainfall and water conditions, and solves the problems that the existing calculation method loses a real measurement standard of annual production and operation efficiency of a hydroelectric plant, lacks essential reference value for real examination of production performance of the hydroelectric plant, and the examination index does not have a good guiding effect of driving production positivity. DETAILED DESCRIPTION

[0033] Hereinafter, the technical scheme of the application is specifically described.

[0034] The application discloses a hydroelectric plant water energy comprehensive generation capacity completion rate calculation method, and specifically comprises the following steps.

[0035] (I) Runoff type low-water-head hydroelectric plant water energy comprehensive generation capacity completion rate calculation

[0036] Obtain all referenceable low-water-head hydroelectric plants in a certain basin, and calculate a design generation capacity completion rate.

[0037] Table 1-Statistical annual generation capacity of referenceable hydroelectric plants in a certain basin

[0038]

[0039]

[0040] Set a quality improvement rate F(%) and an efficiency improvement rate E(%). If design capacities Pn1, Pn2,..., Pnn of each power plant are Pg1, Pg2,..., Pgn, the quality improvement rate F(%) and the efficiency improvement rate E(%) are calculated, and the measurement object is nm.

[0041]

[0042]

[0043] The statistical annual water energy comprehensive generation capacity completion rate (HPR) calculation formula is HPR=100%+F(%) +E(%).

[0044] Additional condition: if the design generation capacity completion rate is greater than the statistical annual water energy comprehensive generation capacity completion rate (HPR) calculation value, the design generation capacity completion rate is taken as the HPR value.

[0045] (II) Hydro Power Based Generation Accomplishment Ratio of Runoff High Head Hydropower Plant

[0046] The production mode of high head hydropower plant is completely different from that of low head hydropower plant, and the adjacent upper and lower high head hydropower plants can be selected as the reference objects. The model of Hydro Power Based Generation Accomplishment Ratio of runoff high head hydropower plant is "the longitudinal production efficiency benefit of the same period of the first and second level hydropower plants". The "actual power generation of the statistical year", "design annual power generation", "installed capacity" and "storage capacity" are obtained, and the "design power generation accomplishment ratio" is calculated, as shown in Tables 2 and 3. The dimensions, data selection and calculation method of the mathematical model are as follows:

[0047] 1. The statistical annual power generation parameters of the first and second level hydropower plants are shown in Table 2.

[0048] Table 2

[0049]

[0050] 2. The longitudinal production efficiency benefit of the same period of the first and second level hydropower plants is shown in Table 3.

[0051] Table 3

[0052]

[0053]

[0054] 3. Hydro Power Based Generation Accomplishment Ratio of Runoff High Head Hydropower Plant

[0055] The calculation formula of Hydro Power Based Generation Accomplishment Ratio of runoff high head hydropower plant is:

[0056]

[0057] Additional condition: if the design power generation accomplishment ratio is greater than the calculated value of Hydro Power Based Generation Accomplishment Ratio (HPR) of the statistical year, the design power generation accomplishment ratio is taken as the HPR value.

[0058] The above is the preferred embodiment of the present application, and any changes made according to the technical solutions of the present application, as long as the generated function does not exceed the scope of the technical solutions of the present application, are within the protection scope of the present application.

Claims

1. A method for calculating the completion rate of comprehensive hydropower generation in a hydropower plant, characterized in that, include: (I) Calculation of the completion rate of comprehensive hydropower generation of run-of-river low-head hydropower plants First, calculate the completion rate of the designed power generation: To obtain the design annual power generation and actual annual power generation of all reference low-head hydropower plants in a certain river basin, calculate the design power generation completion rate = actual annual power generation / design annual power generation; Secondly, calculate the completion rate of comprehensive hydropower generation from low-head hydropower plants: If the designed annual power generation of each low-head hydropower plant is Pn1, Pn2...Pnn, and the actual annual power generation is Pg1, Pg2...Pgn, calculate the quality improvement rate F (%) and efficiency improvement rate E (%), with the calculation object being the low-head hydropower plant nm: The formula for calculating the completion rate of comprehensive hydropower generation from low-head hydropower plants is as follows: HPR = 100% + F (%) + E (%) Finally, if the designed power generation completion rate is greater than the comprehensive hydropower generation completion rate (HPR) of low-head hydropower plants, then the designed power generation completion rate shall be taken as the HPR. (II) Calculation of the completion rate of comprehensive hydropower generation of run-of-river high-head hydropower plants First, calculate the completion rate of the designed power generation: Select nearby high-head hydropower plants at the upper and lower levels as reference objects, obtain the designed power generation, and statistically analyze the annual actual power generation. Calculate the designed power generation completion rate = annual actual power generation / designed annual power generation. Secondly, calculate the completion rate of comprehensive hydropower generation from high-head hydropower plants: If the designed annual power generation of the upstream and downstream high-head hydropower plants are Pn1 and Pn2 respectively, the actual annual power generation are Pg1 and Pg2 respectively, the installed capacity is G1 and G2 respectively, and the reservoir capacity is C1 and C2 respectively, calculate the completion rate of the comprehensive hydropower generation of the high-head hydropower plants: Where DGC is the design comparison coefficient. GC is the power generation comparison coefficient. GCR is the statistical completion rate comparison coefficient. CGCR is the statistical completion rate comparison coefficient, which is the arithmetic mean of the comparison coefficients of the completion rate of the current year and the previous years during the statistical period. Finally, if the designed power generation completion rate is greater than the high-head hydropower plant's comprehensive hydropower generation completion rate (HPR), then the designed power generation completion rate shall be taken as the HPR.

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