A fish luring method used by a WNL power station fish lifting machine system

Abstract

The present application relates to a kind of WNL power station fish lifting machine system uses fish attracting method, belong to dam under fish attracting technical field, by detecting dam water temperature, dam under water temperature, dam under water level, air temperature and discharge flow etc. Influence factor, determine fishway flow rate, through the flow state reached between fishway flow rate and natural river flow rate, attract fish from natural river into fishway, the bait fish of the present application is with sodium hydroxymethyl cellulose as carrier, and cooperate glycine, glutamic acid, lysine, cholesterol, DMPT, TMAO, cholesterol, betaine, corn vinasse and castor seed extract mixture is formed, simultaneously through four different colors fish attracting lamp to fish, bait and light mutually assist, make from natural river into fishway, further concentrated into fish collecting hopper, can be lifted by fish collecting hopper, further through transport, can let the fish in dam downstream, go to upstream, let the normal exchange of genetic gene of upstream and downstream fish.

Description

Technical Field

[0001] The invention relates to the technical field of fish luring technology under water conservancy and hydropower dams, and in particular to a fish luring method applied to a fish hoist system of a WNL power station. Background Art

[0002] Hydropower projects serve multiple functions, including flood control, irrigation, power generation, navigation, and water supply. Dam construction can disrupt fish migration. To restore normal fish migration upstream and downstream of the dam site and ensure the proper exchange of genetic information, fish passages are essential. The effective operation of these passages is a crucial means of maintaining river connectivity, mitigating the impact of dams and restoring fish migration pathways. Currently, traditional fish passages in hydropower projects both domestically and internationally primarily include fish locks, fishways, fish elevators, and fish collection and transport vessels. Fish elevators, similar in design to elevators, consist of three main components: a fish inlet (fish entrapment channel), a vertical shaft (fish collection hopper), and a fish outlet (across-dam transport system). They are particularly well-suited for projects with medium to high headwater levels.

[0003] However, it is difficult for fish downstream of the dam to enter the fish inlet trough (fish luring way) from the natural river channel, or only a small number of fish enter, resulting in a huge gap between the operating effect and efficiency of the fish elevator system and the design target. The fish downstream of the dam cannot or very rarely enter the fish inlet trough (fish luring way) into the fish inlet trough (fish collecting hopper), and cannot go upstream, and the genetic genes of the upstream and downstream fish cannot be normally communicated. Summary of the Invention

[0004] The present invention aims to solve the above technical problems and provides a fish luring method used in a WNL power station fish lift system.

[0005] In order to solve the above technical problems, the technical solution provided by the present invention is:

[0006] A fish luring method used in a WNL power station fish lift system, including a formula for calculating the flow velocity of a fish luring channel, light luring, and bait luring.

[0007] The fish that pass through the WNL hydropower station are the schizothorax glabrata, the schizothorax lancangensis, the schizothorax naked, the Deqin striped catfish, the slender-tailed catfish, the Lanping catfish and the yellow-spotted catfish, with the fish of 60mm to 400mm as the main size of the individuals that pass through the dam.

[0008] The calculation formula of the flow rate of the fish channel is based on the measured water temperature above the dam (℃), water temperature below the dam (℃), water level below the dam (m), air temperature (℃) and outflow (m 3 / S) and the calculation method of the flow velocity in the fish channel was obtained by applying multiple regression analysis as follows:

[0009] Y=[2.24242(2.24242±0.41138)]+[0.00354(0.00354±0.005)×water temperature above dam]-[0.22458(0.22458±0.04301)×water temperature below dam]+[1.72898×10 -5 (1.72898×10 -5 ±4.25402×10 -5 )×water level below dam]+[0.00998(0.00998±0.01814)×air temperature]+[0.00228(0.00228±1.58598×10 -4 )×outbound flow];

[0010] Only outbound traffic (m 3 The results of univariate analysis were as follows:

[0011] Y=-1.6023×10 10 × outbound flow + 1.93757 × 10 11 ×[Outbound flow] 2 +3.23062×10 12 ×[Outbound flow] 3 -6.44365×10 12 ×[Outbound flow] 4 +8.53922×10 12 ×[Outbound flow] 5 -7.51907×10 12 ×[Outbound flow (m 3 / S)] 6 +4.24226×10 12 ×[Outbound flow] 7 -1.39168×10 12 ×[Outbound flow] 8 +2.02264×10 11 ×[Outbound flow] 9 ;

[0012] The goodness of fit R obtained by multiple regression analysis 2 =0.70323, which is greater than the goodness of fit R obtained by the single factor analysis based only on outbound flow. 2 =0.44156. When there are sufficient measuring equipment, multiple measurement results should be used to calculate the flow rate in the fish channel. When other equipment fails, the calculation can be performed based only on the outflow rate.

[0013] The fish trapping system includes a fish collecting bucket and four 12V 25W fish trapping lights arranged in the fish collecting bucket, and a light shield plate is installed between the four fish trapping lights;

[0014] The fish-attracting bait comprises 1-2 parts of glycine, 1-2 parts of glutamic acid, 1-2 parts of lysine, 1-2 parts of cholesterol, 1-2 parts of DMPT, 1-2 parts of TMAO, 1-2 parts of cholesterol, 1-2 parts of betaine, 1-2 parts of corn distiller's grains and 0.1-0.5 parts of castor bean extract, and 4-6 parts of sodium hydroxymethyl cellulose is used as a carrier;

[0015] The fish trapping system includes a fish collecting bucket and four fish trapping lights arranged on each of the four sides of the fish trap, and a light shield plate is installed between the four fish trapping lights;

[0016] The fish-attracting bait comprises 1-2 parts of glycine, 1-2 parts of glutamic acid, 1-2 parts of lysine, 1-2 parts of cholesterol, 1-2 parts of DMPT, 1-2 parts of TMAO, 1-2 parts of cholesterol, 1-2 parts of betaine, 1-2 parts of corn distiller's grains and 0.1-0.5 parts of castor bean extract, and 4-6 parts of sodium hydroxymethyl cellulose is used as a carrier.

[0017] Preferably, the colors of the fish attracting light are red light, yellow-green light, blue-green light and purple light.

[0018] Preferably, the wavelength of the red light is 615-650 nm, the wavelength of the yellow-green light is 500-600 nm, the wavelength of the blue-green light is 450-500 nm, and the wavelength of the purple light is 370-410 nm.

[0019] Preferably, the bait is wrapped with 2 layers of 120-mesh net when used to lure fish, hung in the center of the fish collecting bucket, and replaced every 3-5 days.

[0020] Preferably, the fish luring system further comprises a fish luring port, a hoisting machine room, a fishing room, a fish driving control room 1, a fish driving control room 2, a sorting and observation room, a transfer platform and a fish blocking net.

[0021] Preferably, the fish attracting system is arranged 100-150m downstream of the shore tail water outlet.

[0022] Preferably, the light shield plate is in a cross structure, and the light irradiation part of the fish attracting light is the four sides of the fish collecting bucket.

[0023] Preferably, the sunshade is a wooden board or an iron board with a size of 2m×1m.

[0024] After adopting the above system method, the present invention has the following advantages:

[0025] The present invention uses bait to attract fish, which uses sodium hydroxymethyl cellulose as a carrier and is mixed with glycine, glutamic acid, lysine, cholesterol, DMPT, TMAO, cholesterol, betaine, corn distiller's grains and castor bean extract. The bait can attract fish on the dam into a fish collecting bucket, and at the same time, four fish attracting lights of different colors are used to attract fish. The bait and the light attract fish, and the fish attract each other, so that the fish downstream of the dam can enter the fish inlet tank and go upstream through the vertical shaft (fish collecting bucket), so that the genetic genes of the upstream and downstream fish can be normally exchanged.

[0026] The above summary is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present invention will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or technical descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 It is a top view of the fish collecting bucket of the present invention;

[0029] Figure 2 is a conventional residual diagram of the water temperature above the dam in the present invention;

[0030] Figure 3 is a conventional residual diagram of the water temperature below the dam of the present invention;

[0031] Figure 4 is the conventional residual diagram of the water level below the dam in the present invention;

[0032] Figure 5 is a conventional residual graph of the air temperature of the present invention;

[0033] Figure 6 It is the conventional residual graph of the outbound flow of the present invention;

[0034] Figure 7 This is a graph showing the number of fish caught by the fish lifter according to the first embodiment of the present invention;

[0035] Figure 8 This is a full-length distribution diagram of fish caught by the fish lifter according to the first embodiment of the present invention;

[0036] Figure 9 This is a graph showing the number of fish caught by the fish lifter according to the second embodiment of the present invention;

[0037] Figure 10This is a full-length distribution diagram of fish caught by the fish lifter according to the second embodiment of the present invention;

[0038] Figure 11 This is a graph showing the number of fish caught by the fish lifter according to the third embodiment of the present invention;

[0039] Figure 12 This is a full-length distribution diagram of fish caught by the fish lifter according to the third embodiment of the present invention;

[0040] Figure 13 This is a full-length distribution diagram of Deqin striped-breasted catfish collected by the fish lifter of Example 3 of the present invention;

[0041] As shown in the figure: 1. Fish collecting bucket; 2. Light shield; 3. Fish attracting light. DETAILED DESCRIPTION

[0042] Specific embodiments of the present invention will now be mentioned in detail. Although the present invention is described in conjunction with these specific embodiments, it should be appreciated that the present invention is not intended to be limited to these specific embodiments. On the contrary, these embodiments are intended to cover substitutions, changes or equivalent embodiments that may be included in the spirit and scope of the invention defined by the claims. In the following description, a large amount of specific details are set forth to provide a comprehensive understanding of the present invention. The present invention can be implemented without some or all of these specific details. In other cases, in order not to make the present invention unnecessarily obscure, well-known process operations are not described in detail.

[0043] When used in conjunction with "including," "methods comprising," or similar language in this specification and the appended claims, the singular forms "a," "an," and "the" include plural references unless the context clearly dictates otherwise. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

[0044] The present invention will be described in further detail below in conjunction with the full text.

[0045] Combined with attachment Figures 1-6 A fish luring method used in the WNL power station fish lift system, including a formula for calculating the flow velocity of the fish luring channel, light luring and bait luring,

[0046] The fish that pass through the WNL hydropower station are the schizothorax glabrata, the schizothorax lancangensis, the schizothorax naked, the Deqin striped catfish, the slender-tailed catfish, the Lanping catfish and the yellow-spotted catfish, with the fish of 60mm to 400mm as the main size of the individuals that pass through the dam.

[0047] The calculation formula of the flow rate of the fish channel is based on the measured water temperature above the dam (℃), water temperature below the dam (℃), water level below the dam (m), air temperature (℃) and outflow (m 3 / S) and other results, and the calculation method of the flow velocity of the fish channel was obtained by applying multiple regression analysis as follows:

[0048] Y=[2.24242(2.24242±0.41138)]+[0.00354(0.00354±0.005)×water temperature above dam]-[0.22458(0.22458±0.04301)×water temperature below dam]+[1.72898×10 -5 (1.72898×10 -5 ±4.25402×10 -5 )×water level below dam]+[0.00998(0.00998±0.01814)×air temperature]+[0.00228(0.00228±1.58598×10 -4 )×outbound flow];

[0049] Only outbound traffic (m 3 The results of univariate analysis were as follows:

[0050] Y=-1.6023×10 10 × outbound flow + 1.93757 × 10 11 ×[Outbound flow] 2 +3.23062×10 12 ×[Outbound flow] 3 -6.44365×10 12 ×[Outbound flow] 4 +8.53922×10 12 ×[Outbound flow] 5 -7.51907×10 12 ×[Outbound flow (m 3 / S)] 6 +4.24226×10 12 ×[Outbound flow] 7 -1.39168×10 12 ×[Outbound flow] 8 +2.02264×10 11 ×[Outbound flow] 9 ;

[0051] The goodness of fit R obtained by multiple regression analysis 2 =0.70323, which is greater than the goodness of fit R obtained by the single factor analysis based only on outbound flow. 2 =0.44156. When there are sufficient measuring equipment, multiple measurement results should be used to calculate the flow velocity in the fish channel. When other equipment fails, the calculation can be based only on the outflow rate.

[0052] The fish trapping system includes a fish collecting bucket and four fish trapping lights arranged on each of the four sides of the fish trap, and a light shield plate is installed between the four fish trapping lights;

[0053] The fish-attracting bait comprises 1-2 parts of glycine, 1-2 parts of glutamic acid, 1-2 parts of lysine, 1-2 parts of cholesterol, 1-2 parts of DMPT, 1-2 parts of TMAO, 1-2 parts of cholesterol, 1-2 parts of betaine, 1-2 parts of corn distiller's grains and 0.1-0.5 parts of castor bean extract, and 4-6 parts of sodium hydroxymethyl cellulose is used as a carrier;

[0054] The fish trapping system includes a fish collecting bucket and four 12V 25W fish trapping lights arranged in the fish collecting bucket, and a light shield plate is installed between the four fish trapping lights;

[0055] The fish-attracting bait comprises 1-2 parts of glycine, 1-2 parts of glutamic acid, 1-2 parts of lysine, 1-2 parts of cholesterol, 1-2 parts of DMPT, 1-2 parts of TMAO, 1-2 parts of cholesterol, 1-2 parts of betaine, 1-2 parts of corn distiller's grains and 0.1-0.5 parts of castor bean extract, and 4-6 parts of sodium hydroxymethyl cellulose is used as a carrier.

[0056] The colors of the fish attracting light 3 are red light, yellow-green light, blue-green light and purple light.

[0057] The wavelength of the red light is 615-650 nm, the wavelength of the yellow-green light is 500-600 nm, the wavelength of the blue-green light is 450-500 nm, and the wavelength of the purple light is 370-410 nm.

[0058] When the bait is used to lure fish, it is wrapped with 2 layers of 120-mesh net, hung in the center of the fish collecting bucket 1, and replaced every 3-5 days.

[0059] The fish trapping system is mainly composed of a fish trapping mouth, a hoist room, a fishing room, a fish driving control room 1, a fish driving control room 2, a sorting observation room, a transfer platform, and a fish intercepting net. Along the water flow direction, there are arranged a 3×7m channel working door and a QP320kN-16m hoist, a 3×7.5m fixed fence in the fish collecting channel, a fish collecting bucket (volume 3×2×1m) and a QP2×200kN-32m hoist, a 3×7.5m fish driving fence and a walking traction hoist in the fish collecting channel, a fish driving fence lifting hoist (QP2×125kN-16m) in the fish collecting channel, a 1×1.5m permeable fence in the glass tank of the observation room, a 1.2×1.5m fish driving fence and its trolley in the observation glass tank, a 0.4×1.5m fish release gate in the observation glass tank and a QL20kN hoist, Metal structure equipment such as fish release valves, opening and closing machine rooms, sorting and observation rooms, fishing rooms, fish driving control rooms, fish gathering channels and other facilities.

[0060] Operation process of metal structure equipment of fishing trap system:

[0061] 1) Raise the fish-driving gate in the fish-collecting channel → raise the working gate of the diversion channel and adjust the gate opening → water flows from the left side to the right side of the diversion channel → fish flow upstream into the fish-collecting channel;

[0062] 2) Completely close the working gate of the diversion channel → operate the traction hoist → drive the trolley and fish-driving fence from the starting point to the end point → drive the fish that have entered the fish-collecting channel to the top of the fish-collecting hopper;

[0063] 3) Operate the fish collecting bucket opening and closing machine → lift the fish collecting bucket to the fish unloading height;

[0064] 4) Move the fish guide tube horizontally to connect with the fish collecting hopper → open the fish outlet gate of the fish collecting hopper → unload the fish in the fish collecting hopper into the observation glass tank;

[0065] 5) After the observation and counting is completed, the fish gate screw hoist opens the fish gate;

[0066] 6) The fish-driving cage trolley in the observation glass tank drives the fish-driving cage in the glass tank to drive all the fish in the observation glass tank into the transfer room;

[0067] 7) Observe the screw-type opening and closing mechanism of the fish gate of the glass tank to close the fish gate;

[0068] 8) The fish guide tube under the fish release valve extends into the fish transport box, the fish release valve is opened, and the fish in the transfer room are unloaded into the fish transport box.

[0069] The fish attracting system is arranged 100-150m downstream of the shore tail water outlet.

[0070] The light shield plate 2 is in a cross structure, and the light irradiation part of the fish attracting light 3 is the four sides of the fish collecting bucket 1.

[0071] The sunshade plate 2 is a wooden board or an iron board, and has a size of 2m×1m.

[0072] 1. Flow rate to attract fish:

[0073] The multivariate regression analysis was applied to the water temperature above the dam (℃), the water temperature below the dam (℃), the water level below the dam (M), the air temperature (℃) and the outflow (m 3 The calculation method of the flow velocity in the fish channel is obtained by calculating and analyzing five main influencing factors such as flow rate and flow velocity:

[0074] Y (flow velocity in the fish channel, m / s) = [2.24242 (2.24242 ± 0.41138)] + [0.00354 (0.00354 ± 0.005) × water temperature above the dam (°C)] - [0.22458 (0.22458 ± 0.04301) × water temperature below the dam (°C)] + [1.72898 × ​​10 -5 (1.72898×10 -5 ±4.25402×10 -5 )×water level below dam (M)]+[0.00998(0.00998±0.01814)×air temperature (℃)]+[0.00228(0.00228±1.58598×10 -4 )×outbound flow (m 3 / S)]

[0075] R 2 =0.70323

[0076] Better than only outbound traffic (m 3 Results of univariate analysis performed with S:

[0077] Y (flow velocity in the fish channel, m / s) = -1.6023 × 10 10 × outbound flow (m 3 / S)+1.93757×10 11 ×[Outbound flow (m 3 / S)] 2 +3.23062×10 12 ×[Outbound flow (m 3 / S)] 3 -6.44365×10 12 ×[Outbound flow (m 3 / S)] 4 +8.53922×10 12 ×[Outbound flow (m 3 / S)] 5 -7.51907×10 12 ×[Outbound flow (m 3 / S)] 6 +4.24226×10 12 ×[Outbound flow (m 3 / S)] 7 -1.39168×10 12 ×[Outbound flow (m 3 / S)] 8 +2.02264×10 11 ×[Outbound flow (m 3 / S)] 9

[0078] R 2 =0.44156

[0079] According to the outbound flow (m 3 The univariate analysis process table of the univariate analysis is as follows:

[0080] Table 1

[0081]

[0082]

[0083] Table 2

[0084] B Points 33 degrees of freedom 23 Residual sum of squares 550785.0748 R-squared (COD) 0.59862 Adjusted R-squared 0.44156

[0085] The calculation process of the comprehensive method is shown in Table 3:

[0086] Table 3

[0087]

[0088]

[0089] Table 4

[0090] A Points 179 degrees of freedom 173 Residual sum of squares 82.48571 R-squared (COD) 0.71157 Adjusted R-squared 0.70323

[0091] Example 1:

[0092] Using this invention to attract fish, the fish elevator system collected a total of 301 target fish species in March 2023, including 203 schizothorax glabrata, 35 schizothorax lancangensis, 60 schizothorax moinae, and 3 Deqin catfish. Other non-target species, such as plateau loach, carp, catfish, and crucian carp, were not included in the total.

[0093] like Figure 7 As shown, 1 is the total number, 2 is the smooth-lipped schizothorax, 3 is the Lancang schizothorax, 4 is the naked-bellied schizothorax, and 5 is the Deqin striped-breasted catfish.

[0094] The total length of the fish ranges from 4.5 to 37 cm, and the weight ranges from 0.8 to 350.8 g. The distribution trend of the total length of the target fish is determined by Figure 8 It can be seen that the target fish caught by the Wunonglong fish lifter are concentrated in the length of 10-15cm.

[0095] The correlation between the number of fish caught and external conditions is shown in Table 5.

[0096] Table 5 Correlation between the number of fish caught by the fish lifter and external conditions

[0097]

[0098]

[0099] As shown in Table 5, the order of the strong and weak relationships affecting the number of fish caught by the fish lift is: water level below the dam > water temperature above the dam > flow velocity > time sequence > water temperature below the dam > outflow rate; the order of the strong and weak relationships with the number of fish caught by the fish lift is: outflow rate > water temperature below the dam > time sequence > flow velocity (fish channel) > water temperature above the dam > water level below the dam.

[0100] Example 2:

[0101] The fish elevator system collected a total of 498 target fish in April 2023, including 352 schizothorax glabrata, 45 schizothorax lancangensis, 48 ​​schizothorax naked belly and 53 Deqin striped breast catfish. Figure 9 shown.

[0102] Based on the total catch in March, the catch of some fish species changed significantly with the month, and the number of Deqin striped-breasted catfish increased significantly.

[0103] The total length of the fish ranges from 4.5 to 37 cm, and the weight ranges from 0.8 to 350.8 g. The distribution trend of the total length of the target fish can be found in Figure 10 In April, the target fish caught by the Wunonglong fish lift were concentrated in the range of 8-15cm in length. This was because the Deqin striped-breasted catfish were relatively small, and the increase in their number resulted in a decrease in the total length of the fish within a single month.

[0104] The correlation between the number of fish caught and external conditions is shown in Table 6.

[0105] Table 6 Correlation between the number of fish caught by the fish lifter and external conditions

[0106]

[0107]

[0108] As shown in Table 6, the order of the strong and weak relationships affecting the number of fish caught by the fish lift is: outflow flow > water temperature above the dam > water level below the dam > water temperature below the dam > time sequence > flow velocity; the order of the strong and weak relationships with the number of fish caught by the fish lift is: flow velocity (fish channel) > water level below the dam > time sequence > water temperature below the dam > water temperature above the dam > outflow flow.

[0109] Example 3:

[0110] In May 2023, the fish elevator system collected a total of 670 fish of various types, including 377 target fish and 293 non-target fish (plateau loach, carp, catfish, crucian carp, etc.); among the target fish, there were 197 schizothorax glabrata, 8 schizothorax lancangensis, 4 schizothorax monatus and 168 schizothorax deqinensis. Figure 11 As shown,

[0111] The total length of fish ranges from 2.2 to 37.9 cm, and the weight ranges from 0.4 to 350 g. The distribution trend of the total length of target fish can be seen in Figure 12 ,Depend on Figure 13 It can be seen that the target fish species (schizothorax) captured by the Wunonglong fish lifter are concentrated in the length of 10-18cm, and the target fish species (Deqin striped-breasted catfish) are concentrated in the length of 8-10cm.

[0112] The correlation between the number of fish caught and external conditions is shown in Table 7.

[0113] Table 7 Correlation between the number of target fish caught by the fish lifter and external conditions

[0114]

[0115]

[0116] As shown in Table 7, the order of the strong and weak relationships affecting the number of fish caught by the fish lift is: time sequence > water temperature below the dam > water level below the dam > flow velocity (fish channel) > outflow > water temperature above the dam; the order of the strong and weak correlations with the number of fish caught by the fish lift is: time sequence > water temperature above the dam > outflow > flow velocity (fish channel) > water level below the dam > water temperature below the dam.

[0117] The present invention and its embodiments are described above. This description is not restrictive. What is shown in the full text is only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by this and, without departing from the purpose of the present invention, designs a structure and embodiment similar to this technical solution without creatively designing, they shall all fall within the scope of protection of the present invention.

Claims

1. A fish luring method used in a power station fish lift system, characterized in that: Including the calculation formula of the flow velocity of the fish channel, light luring fish and bait luring fish, The fish species that need to be passed through the dam by the fish lift system of the power station are the schizothorax glabrata, the schizothorax lancangensis, the schizothorax naked, the Deqin striped catfish, the slender-tailed catfish, the Lanping catfish and the yellow-spotted catfish; The calculation formula of the flow rate of the fish channel is based on the measured water temperature above the dam (°C), water temperature below the dam (°C), water level below the dam (m), air temperature (°C) and outflow (m) 3 The results of / S were used to calculate the flow velocity of the fish channel by applying multiple regression analysis as follows: Y=[2.24242(2.24242±0.41138)]+[0.00354(0.00354±0.005)×water temperature above dam]-[0.22458(0.22458±0.04301)×water temperature below dam]+[1.72898×10 -5 (1.72898×10 -5 ±4.25402×10 -5 )×water level below the dam]+[0.00998(0.00998±0.01814)×air temperature]+[0.00228(0.00228±1.58598×10 -4 ) × outbound flow]; The results of the single factor analysis based only on the outbound flow rate m³ / S are as follows: Y=-1.6023×10 10 × outbound flow + 1.93757 × 10 11 ×[Outbound flow] 2 +3.23062×10 12 ×[Outbound flow] 3 -6.44365×10 12 ×[Outbound flow] 4 +8.53922×10 12 ×[Outbound flow] 5 -7.51907×10 12 ×[Outbound flow] 6 +4.24226×10 12 ×[Outbound flow] 7 -1.39168×10 12 ×[Outbound flow] 8 +2.02264×10 11 ×[Outbound flow] 9 ; The goodness of fit R obtained by multiple regression analysis 2 =0.70323 is greater than the goodness of fit R obtained by the single factor analysis based only on outbound flow 2 =0.44156. When there are sufficient measuring equipment, multiple measurement results should be used to calculate the flow velocity in the fishway. When other equipment fails, the calculation can be based only on the outflow rate. The fish trapping system includes a fish collecting bucket and four 12V 25W fish trapping lights arranged in the fish collecting bucket, and a light shield plate is installed between the four fish trapping lights; The fish-attracting bait comprises 1-2 parts of glycine, 1-2 parts of glutamic acid, 1-2 parts of lysine, 1-2 parts of cholesterol, 1-2 parts of DMPT, 1-2 parts of TMAO, 1-2 parts of cholesterol, 1-2 parts of betaine, 1-2 parts of corn distiller's grains and 0.1-0.5 parts of castor bean extract, and 4-6 parts of sodium hydroxymethyl cellulose is used as a carrier.

2. The fish luring method used in a power station fish lift system according to claim 1, characterized in that: The colors of the fish attracting light are red light, yellow-green light, blue-green light and purple light.

3. The fish luring method used in a power station fish lift system according to claim 2, characterized in that: The wavelength of the red light is 615-650 nm, the wavelength of the yellow-green light is 500-600 nm, the wavelength of the blue-green light is 450-500 nm, and the wavelength of the purple light is 370-410 nm.

4. The fish luring method used in a power station fish lift system according to claim 1, characterized in that: When the bait is used to lure fish, it is wrapped with 2 layers of 120-mesh net, hung in the center of the fish collecting bucket, and replaced every 3-5 days.

5. The fish luring method used in a power station fish lift system according to claim 1, characterized in that: The fish trapping system also includes fish traps, fish traps, fish barriers, fish driving barriers and fish collecting buckets.

6. The fish luring method used in a power station fish lift system according to claim 1, characterized in that: The fish trapping system is arranged 100-150m downstream of the shore tailwater outlet.

7. The fish luring method used in a power station fish lift system according to claim 1, characterized in that: The light shield plate is in a cross structure, and the light irradiation part of the fish attracting lamp is the four sides of the fish collecting bucket.

8. The fish luring method used in a power station fish lift system according to claim 1, characterized in that: The sunshade plate is a wooden board or an iron sheet plate, and has a size of 2m×1m.

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