Hydropower station surplus water resource water diversion amount self-adjusting implementation method

Abstract

The application provides a method for realizing self-regulation of water diversion quantity of surplus water resources of a hydropower station, which comprises a water regime information system, a water diversion and power generation control system, a surplus water resource water diversion control system and a flood discharge facility control system; through introduction of the surplus water resource system, effective diversion flow can be increased with a small cost, and the benefit of the hydropower station is improved; the larger the annual average flood discharge flow is, the more significant the benefit is.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water conservancy power generation diversion, in particular to a method for realizing self-regulation of surplus water resource diversion capacity of a hydropower station. BACKGROUND

[0002] A hydropower plant refers to a plant that converts the potential energy and kinetic energy of water into electric energy. Its basic working process is: water is diverted from the upstream of a dam, and the gravitational potential energy and kinetic energy are converted into mechanical energy by using the pressure or flow rate of water, so that the water wheel drives the generator to rotate, and finally the mechanical energy is converted into electric energy. The maximum power generation flow of a hydropower plant is fixed after the design and construction are completed, and generally cannot be changed. Under normal circumstances, water flows through the water turbine generator set to generate power, and when the flood season comes or the equipment fails, the flood discharge facilities need to be opened to meet the requirements of flood control, ecological flow, etc., and this part of water flow cannot be utilized. SUMMARY

[0003] To solve the above technical problems, the present application provides a method for realizing self-regulation of surplus water resource diversion capacity of a hydropower station. Through this method, the effective utilization of water flow can be increased with a small cost by introducing a surplus water resource system, and the efficiency of the hydropower station is improved. The greater the annual average flood discharge flow, the more significant the efficiency.

[0004] In order to realize the above technical features, the purpose of the present application is achieved as follows: a method for realizing self-regulation of surplus water resource diversion capacity of a hydropower station, which comprises a water regime information system, a diversion power generation control system, a surplus water resource diversion control system, and a flood discharge facility control system.

[0005] The water regime information system gives a discharge flow suggestion or requirement according to the incoming water prediction and the current boundary conditions.

[0006] The diversion power generation control system generates a reported power generation plan according to the suggestion or requirement given by the water regime information system, and formulates an optimal operation strategy. When the required discharge flow exceeds the upper limit of the current allowed power generation flow, the surplus water resource diversion control system is started, and the diversion flow is controlled according to the corresponding boundary conditions. When the required discharge flow exceeds the sum of the current allowed power generation flow and the upper limit of the surplus water resource diversion system, the flood discharge facility control system is started, and the flood discharge flow is controlled according to the corresponding boundary conditions to meet the operation requirements of the entire water conservancy hub.

[0007] In the diversion flow control process, the specific diversion methods include but are not limited to the pipeline siphon method, and the electric energy generated by this part of flow is not directly connected to the grid, and can be utilized in combination with electrolytic hydrogen, electrochemical energy storage, and compressed air energy storage methods.

[0008] The implementation method comprises the following specific steps:

[0009] S1: the water regime information system calculates the discharge requirement in real time;

[0010] S2: whether the discharge requirement changes is judged, if yes, S3 is entered, if no, S1 is returned;

[0011] S3: whether the calculated discharge exceeds the upper limit of the allowed power generation flow is judged, if yes, S5 is entered, if no, S4 is entered;

[0012] S4: the water diversion power generation control system reports the power generation plan according to the discharge requirement and formulates the optimal operation strategy of the unit, and then S14 is entered;

[0013] S5: the water diversion power generation control system reports the power generation plan according to the upper limit of the allowed power generation flow, and S6 is entered;

[0014] S6: whether the surplus water resource diversion control system needs to run at full flow is judged, if yes, S9 is entered, if no, S7 is entered;

[0015] S7: the surplus water resource diversion control system calculates the reference flow of the system, and then S8 is entered;

[0016] S8: the surplus water resource diversion control system adjusts the reference flow according to the calculated value, and then S14 is entered;

[0017] S9: the surplus water resource diversion control system runs at full reference flow, and then S10 is entered;

[0018] S10: the flood discharge system calculates the flood discharge flow, and then S11 is entered;

[0019] S11: whether the calculated flood discharge flow exceeds the maximum flood discharge capacity is judged, if yes, S13 is entered, if no, S12 is entered;

[0020] S12: the flood discharge facility control system adjusts the flood discharge flow according to the calculated value, and then S14 is entered;

[0021] S13: the flood discharge facility control system discharges according to the maximum flood discharge capacity, and then S14 is entered;

[0022] S14: the current process is ended, and the next process is automatically entered.

[0023] The present application has the beneficial effects:

[0024] 1: in the present application, the introduction of the surplus water resource system can increase the effective reference flow with small cost, improve the benefit of the hydropower station, and the greater the annual average flood discharge flow, the more significant the benefit.

[0025] 2: the present application can greatly reduce or even eliminate the flood discharge flow which cannot generate economic benefit through the multi-system coordinated control mode, and can also meet the related requirements of the water conservancy hub operation. Attached Figure Description

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0027] Figure 1 This invention provides a flowchart for the self-regulation of surplus water diversion volume in hydropower stations.

[0028] Figure 2 This is the present invention. Figure 1 Partial flowchart of the upper middle section.

[0029] Figure 3 This is the present invention. Figure 1 Partial flowchart of the lower middle section. Detailed Implementation

[0030] The embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0031] Example 1:

[0032] Please see Figures 1-3 A method for self-regulating the diversion of surplus water resources in a hydropower station is disclosed. It includes a hydrological information system, a water diversion and power generation control system, a surplus water resource diversion control system, and a flood discharge facility control system. The hydrological information system provides outflow recommendations or requirements based on inflow forecasts and current boundary conditions. The water diversion and power generation control system generates and reports a power generation plan based on the recommendations or requirements from the hydrological information system and formulates an optimal operating strategy. When the required outflow exceeds the current allowable power generation flow limit, the surplus water resource diversion control system is activated, controlling the diversion flow according to the corresponding boundary conditions. When the required outflow exceeds the sum of the current allowable power generation flow and the upper limit of the surplus water resource diversion system, the flood discharge facility control system is activated, controlling the flood discharge flow according to the corresponding boundary conditions to meet the overall operational requirements of the hydropower project. By introducing the surplus water resource system, the effective diversion flow can be increased at a relatively low cost, improving the efficiency of the hydropower station; the higher the annual average flood discharge flow, the more significant the benefits.

[0033] Furthermore, the specific water diversion methods employed in the water diversion flow control process include, but are not limited to, water diversion via pipe siphoning. The electrical energy generated by this flow is not directly fed into the grid but can be utilized in conjunction with hydrogen electrolysis, electrochemical energy storage, and compressed air energy storage. The aforementioned water diversion methods enhance its adaptability, while the various forms of energy storage enhance its flexibility.

[0034] Example 2:

[0035] The implementation method includes the following specific steps:

[0036] S1: The hydrological information system calculates the outflow requirement in real time;

[0037] S2: Determine whether the outflow flow requirement has changed, if yes, enter S3, if no, return to S1;

[0038] S3: Determine whether the calculated outflow flow exceeds the upper limit of the allowed power generation flow, if yes, enter S5, if no, enter S4;

[0039] S4: The water diversion power generation control system reports the power generation plan according to the outflow flow requirement and develops the optimal operation strategy of the unit, and then enters S14;

[0040] S5: The water diversion power generation control system declares the power generation plan according to the upper limit of the allowed power generation flow, and enters S6;

[0041] S6: Determine whether the surplus water resource diversion control system needs to run at full flow, if yes, enter S9, if no, enter S7;

[0042] S7: The surplus water resource diversion control system calculates the reference flow of the system, and then enters S8;

[0043] S8: The surplus water resource diversion control system adjusts the reference flow according to the calculated value, and then enters S14;

[0044] S9: The surplus water resource diversion control system runs at full reference flow, and then enters S10;

[0045] S10: The flood discharge system calculates the flood discharge flow, and then enters S11;

[0046] S11: Determine whether the calculated flood discharge flow exceeds the maximum flood discharge capacity, if yes, enter S13, if no, enter S12;

[0047] S12: The flood discharge facility control system adjusts the flood discharge flow according to the calculated value, and then enters S14;

[0048] S13: The flood discharge facility control system discharges at the maximum flood discharge capacity, and then enters S14;

[0049] S14: The current process is completed, and the next process is automatically entered.

Claims

1. A method for self-adjusting the water diversion amount of surplus water resources of a hydropower station, characterized in that, It includes water regime information system, water diversion and power generation control system, surplus water resource diversion control system and flood discharge facility control system. The water regime information system gives out discharge flow suggestion or requirement according to incoming water prediction and current boundary condition; The water diversion and power generation control system generates reported power generation plan and formulates optimal operation strategy according to the suggestion or requirement given by the water regime information system; When the required discharge flow exceeds the upper limit of the current allowed power generation flow, the surplus water resource diversion control system is started to control the water diversion flow according to the corresponding boundary condition; When the required discharge flow exceeds the sum of the current allowed power generation flow and the upper limit of the surplus water resource diversion system, the flood discharge facility control system is started to control the flood discharge flow to meet the operation requirement of the whole water conservancy hub according to the corresponding boundary condition; The implementation method comprises the following specific steps: S1: the water regime information system calculates the discharge flow requirement in real time; S2: it is judged whether the discharge flow requirement changes, if yes, it goes to S3, if no, it returns to S1; S3: it is judged whether the calculated discharge flow exceeds the upper limit of the allowed power generation flow, if yes, it goes to S5, if no, it goes to S4; S4: the water diversion and power generation control system reports the power generation plan according to the discharge flow requirement and formulates the optimal operation strategy of the unit, and then goes to S14; S5: the water diversion and power generation control system reports the power generation plan according to the upper limit of the allowed power generation flow, and goes to S6; S6: it is judged whether the surplus water resource diversion control system needs to run at full flow, if yes, it goes to S9, if no, it goes to S7; S7: the surplus water resource diversion control system calculates the surplus water resource diversion control system reference flow, and then goes to S8; S8: the surplus water resource diversion control system adjusts the reference flow according to the calculated value, and then goes to S14; S9: the surplus water resource diversion control system runs at full reference flow, and then goes to S10; S10: the flood discharge facility control system calculates the flood discharge flow, and then goes to S11; S11: it is judged whether the calculated flood discharge flow exceeds the maximum flood discharge capacity, if yes, it goes to S13, if no, it goes to S12; S12: the flood discharge facility control system adjusts the flood discharge flow according to the calculated value, and then goes to S14; S13: the flood discharge facility control system discharges at the maximum flood discharge capacity, and then goes to S14; S14: the current process is finished, and the next process is automatically entered.

2. The method according to claim 1, wherein, In the water diversion flow control process, the water is diverted through the pipeline siphon method, the electric energy generated by this part of flow is not directly put on the network, and can be utilized in combination with electrolytic hydrogen, electrochemical energy storage and compressed air energy storage.

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