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Joint storage device for hydroelectric generation system

A hydroelectric power generation device and parallel technology are applied in circuit devices, wind turbines, devices that convert solar radiation into useful energy, photovoltaic power generation, etc. The control difficulty is reduced, the water energy utilization rate is improved, and the control difficulty is solved.

Pending Publication Date: 2022-01-14
三峡电能有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the present invention provides a fed storage device for a hydroelectric power generation system to solve the problems in the prior art that the hydropower generation system is difficult to control and the utilization rate of water energy is low

Method used

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  • Joint storage device for hydroelectric generation system
  • Joint storage device for hydroelectric generation system
  • Joint storage device for hydroelectric generation system

Examples

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Embodiment 1

[0036] see figure 1 , the present embodiment provides a joint storage device for a hydroelectric power generation system, the joint storage device is connected in parallel with a hydroelectric power generation device 10 in the hydroelectric power generation system, and the hydroelectric power generation device 10 is connected to the grid 3, that is to say, the hydroelectric power generation device 10 The output shaft 11 of the water wheel drives the AC power generated by the traditional generator 12 to be boosted by the first step-up transformer 13 and then input to the power grid. which, combined with Figure 2 to Figure 4 As shown, the storage device in this embodiment includes at least one DC networking unit 20, and the DC networking unit 20 includes a power generation module 21, an energy storage module 22 and a bidirectional inverter array, and the power generation module 21 and the energy storage module The groups 22 are connected in parallel and converged on the DC bus...

Embodiment 2

[0041] This embodiment is based on the first embodiment, as a further preferred implementation, such as figure 2 As shown, the power generation module in this embodiment is preferably but not limited to a plurality of wind power generation modules 212; it can also be a plurality of photovoltaic power generation modules 211, such as image 3 shown; or a parallel combination of multiple wind power generation modules 212 and photovoltaic power generation modules 211, such as Figure 4 shown; and free parallel combination with other power generation sources, such as: small thermal power generation source, small hydropower generation source, etc.

[0042] It should be noted that since the power generation module of the DC networking unit can be a random power generation source, there is no need to consider the problems caused by the high randomness of the power generation source, so it can fully revitalize the random power generation sources that are currently abandoned in large n...

Embodiment 3

[0044] This embodiment is based on the second embodiment, as a further preferred implementation, such as Figure 5 As shown, the wind power generation module in this embodiment includes a rotating impeller 101, a generator 103 connected to the rotating impeller 101, and a rectifying device 104, wherein the alternating current output by the generator 103 is rectified into a direct current through the rectifying device 104, and then converged on the DC bus. line up. More specifically, the rectification device 104 in this embodiment includes a rectifier 105, a DC conversion module 106 and a power limiting module 107; the input end of the rectifier 105 is connected to the output end of the generator 103, and the output end of the rectifier 105 is connected to the The front end of the module 106 is connected, and the rear end of the DC conversion module 106 is connected to the power limiting module 107 . Furthermore, the control module 108 is connected in parallel between the two ...

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Abstract

The invention provides a joint storage device for a hydroelectric power generation system. The joint storage device is connected in parallel with a hydroelectric power generation device in the hydroelectric power generation system, the hydroelectric power generation device is connected to a power grid, the joint storage device comprises at least one direct current networking unit, the direct current networking unit comprises a power generation module, an energy storage module and a bidirectional inversion array, the power generation module and the energy storage module are connected in parallel and converge on a direct current busbar, one end of the bidirectional inversion array is connected to the direct current busbar, and the other end of the bidirectional inversion array is connected to the power grid. Management linkage is carried out through the direct current networking unit and the hydroelectric power generation device, the whole control difficulty is greatly reduced, moreover, the energy storage module is directly connected to the power generation module in parallel and converged on the direct current busbar to form a direct current local area network, peak regulation and frequency modulation are performed through the power electronic bidirectional inversion array, the water energy utilization rate is increased, and the problem of large regulation and control difficulty is solved.

Description

technical field [0001] The invention relates to the technical field of hydroelectric power generation systems, in particular to a fed storage device for a hydroelectric power generation system. Background technique [0002] Hydropower is a renewable energy source with less impact on the environment. The power generation efficiency is as high as 90%. The cost of power generation is low, the power generation starts quickly, the power generation can be completed within a few minutes, the adjustment is easy, and the cost per unit of output power is low. In addition to providing cheap electricity, it also has the following advantages: controlling flooding, providing irrigation water, and improving river navigation. The relevant projects also improve the transportation, power supply and economy of the area, especially the development of tourism and aquaculture. [0003] For the hydropower system of the traditional AC power generation system, the stock system after its construction...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03B13/00F03D9/25F03D9/11H02S10/00H02S10/12H02S40/30H02S40/32H02S40/38H02J3/32H02J3/38H02J3/46
CPCF03B13/00F03D9/255F03D9/007F03D9/11H02S10/12H02S10/00H02S40/30H02S40/32H02S40/38H02J3/32H02J3/381H02J3/466H02J2300/24H02J2300/28Y02E10/56Y02E10/72Y02E10/76Y02E70/30
Inventor 熊俞超谢俊周静王琳沈虹刘书圆
Owner 三峡电能有限公司
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