Multilayer dam hydroelectric generation system and control method thereof

Abstract

The invention relates to the technical field of water conservancy projects, in particular to a multi-layer dam hydroelectric generation system and a control method thereof.The system comprises a main dam body and multiple layers of auxiliary dam bodies, a row of generator sets are arranged in the middle of each layer of dam body, and water generated after power generation of an upper-layer dam is guided into a lower-layer dam through a drainage system to be used for power generation of the next round. The water resource utilization efficiency and the generating capacity are remarkably improved, meanwhile, the flood prevention capacity and safety are enhanced, and the method is suitable for transformation of an existing hydropower station and construction of a new hydropower station.

Description

Technical Field

[0001] The invention relates to the technical field of water conservancy engineering, and in particular to a multi-layer dam hydroelectric power generation system and a control method thereof. Background Art

[0002] Traditional hydropower station dams usually adopt a single dam structure with a row of generator sets in the middle. This design has high efficiency in the era of material shortage, but in the context of today's abundant materials and energy shortage, it has the following problems:

[0003] 1. The water resource utilization efficiency is low and only one power generation can be carried out;

[0004] 2. The power generation capacity is limited by the height of a single dam and the number of generator sets;

[0005] 3. Flood control capacity and safety are limited, making it difficult to cope with extreme floods or external shocks.

[0006] Based on this, this scheme aims to provide a multi-layer dam hydroelectric power generation system and its control method, which can significantly improve the utilization efficiency of water resources and power generation through the design of multi-layer dams and generator sets, while enhancing flood control capabilities and safety. Summary of the invention

[0007] 1. Technical issues

[0008] The present invention aims to at least solve the problem that the dam in the prior art is insufficient in resource utilization and safety.

[0009] (II) Technical content

[0010] This scheme provides a multi-layer dam hydroelectric power generation system, which is achieved by the following specific technical means, including:

[0011] The main dam body is a traditional dam structure with a row of generator sets in the middle;

[0012] The auxiliary dam body has multiple layers and is built outside the front of the main dam body. The height of the multiple layers of the auxiliary dam body decreases from the back to the front, and the height of the last layer of the auxiliary dam body is lower than that of the main dam body. A row of generator sets is also set in the middle of each layer of the auxiliary dam body.

[0013] The drainage system is distributed between the main dam body and the last layer of auxiliary dam body, as well as between the two adjacent groups of auxiliary dam bodies in front and behind. It is used to guide the water to drain layer by layer, so as to realize the power generation of the generator sets located at different heights in turn.

[0014] Preferred technical solution 1: also includes a control system for coordinating the operation of generator sets located at different heights to ensure efficient use of water resources.

[0015] Preferred technical solution 2: The height difference between the main dam body and the last layer of auxiliary dam body, and between the two adjacent groups of auxiliary dam bodies are equal, so as to provide a fixed height water flow drop for each row of generator sets;

[0016] Preferred technical solution three: The drainage system guides the water flow through pipes laid between the main dam body and the last layer of auxiliary dam body, and between the front and rear adjacent groups of auxiliary dam bodies.

[0017] Preferred technical solution four: the installation height of the generator set on the auxiliary dam body is smaller than the height of the main dam body or the height of a group of adjacent auxiliary dam bodies at the rear side.

[0018] The present invention also discloses a control method for a multi-layer dam hydroelectric power generation system, comprising the following steps:

[0019] Step 1: The upstream water source flows into the main dam body, and the generator set of the main dam body generates electricity for the first time;

[0020] Step 2: the water after power generation in the main dam body flows into the first-layer auxiliary dam body through the drainage system, and the generator set of the first-layer auxiliary dam body generates power for the second time;

[0021] Step 3: the water after power generation in the first layer of the auxiliary dam body flows into the second layer of the auxiliary dam body through the drainage system, and the generator set of the second layer of the auxiliary dam body generates power for the third time;

[0022] Step 4, and so on, until the power generation of the last layer of the auxiliary dam is completed.

[0023] (III) Technical Effect

[0024] The above structure enables this solution to have the following beneficial effects:

[0025] 1. The present invention significantly improves the utilization efficiency of water resources through the design of multi-layer dams and generator sets. Water resources can be used for multiple power generation, and the power generation capacity is increased by ten times or even dozens of times;

[0026] 2. The present invention significantly enhances flood control capacity and safety through the cumulative thickness of multi-layer dams, and can effectively cope with extreme floods or external shocks;

[0027] 3. The present invention is applicable to the reconstruction of existing hydropower stations and the construction of new hydropower stations, and has broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0029] Figure 1 This is a schematic diagram of the structure of this scheme;

[0030] Figure 2 The following is the workflow diagram of this program.

[0031] Among them, 1. Main dam body, 2. Auxiliary dam body. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0033] See also Figure 1 , a multi-layer dam hydroelectric system, including:

[0034] The main dam body 1 is a traditional dam structure with a height of H meters (for example, H = 200 meters) and a row of generator sets arranged in the middle;

[0035] The auxiliary dam body 2 has multiple layers and is built on the front outer side of the main dam body 1. The height of the multiple layers of the auxiliary dam body 2 decreases by XH meters from front to back (for example, the height of the first layer of the auxiliary dam body is 180 meters, the second layer of the auxiliary dam body is 160 meters, the third layer of the auxiliary dam body is 140 meters, and so on), and the height of the last layer of the auxiliary dam body 2 is lower than the height of the main dam body 1, and the height decreases by XH meters. A row of generator sets is also set in the middle of each layer of the auxiliary dam body 2;

[0036] The generator set occupies an altitude of h meters (for example, the generator set on the main dam body 1 is between 180 meters and 200 meters, the generator set on the first layer of the auxiliary dam body occupies an altitude of 160 meters to 180 meters, the second layer is between 140 meters and 160 meters, and so on), ensuring that XH>h;

[0037] Drainage system, which is achieved by laying pipes between the main dam body 1 and the last layer of the auxiliary dam body 2, and between the two adjacent groups of auxiliary dam bodies 2, to guide the water flow layer by layer, that is, to use the pipes to introduce the water after the upper dam generates electricity into the lower dam, so as to achieve the power generation of the generator sets located at different heights in turn;

[0038] Control system, used to coordinate the operation of generator sets located at different heights to ensure efficient use of water resources.

[0039] See also Figure 2 The present invention also discloses a control method for a multi-layer dam hydroelectric power generation system, comprising the following steps:

[0040] Step 1: The upstream water source flows into the main dam body 1, and the control system coordinates the generator set of the main dam body 1 to generate electricity for the first time;

[0041] Step 2: the water after power generation in the main dam body 1 flows into the first-layer auxiliary dam body 2 through the drainage system, and the control system coordinates the generator set of the first-layer auxiliary dam body 2 to generate power for the second time;

[0042] Step 3: After the power generation of the first layer of the auxiliary dam body 2, the water flows into the second layer of the auxiliary dam body 2 with decreasing height through the drainage system, and the control system coordinates the generator set of the second layer of the auxiliary dam body 2 to generate power for the third time;

[0043] Step 4: As the water flows down layer by layer, the generator set on the last layer of the auxiliary dam body 2 completes power generation.

[0044] The undisclosed parts in the present invention are all prior art, and their specific structures and working principles are not described in detail.

[0045] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-layer dam hydroelectric power generation system, characterized in that: The main dam body (1) has a row of generator sets arranged in the middle; The auxiliary dam body (2) has multiple layers and is built on the front side of the main dam body (1). The heights of the multiple layers of the auxiliary dam body (2) decrease from the back to the front, and the height of the last layer of the auxiliary dam body (2) is lower than the height of the main dam body (1). A row of generator sets is also arranged in the middle of each layer of the auxiliary dam body (2); The drainage system is distributed between the main dam body (1) and the last layer of the auxiliary dam body (2), as well as between two adjacent groups of auxiliary dam bodies (2) in front and behind, and is used to guide water to drain layer by layer, thereby realizing power generation by each layer of the generator set.

2. The multi-layer dam hydroelectric power generation system according to claim 1, characterized in that: A control system is also included for coordinating the operation of the generator sets located at different heights.

3. The multi-layer dam hydroelectric power generation system according to claim 1, characterized in that: The height of the generator set on the auxiliary dam body (2) is smaller than the height of the main dam body (1) or the height of an adjacent layer of the auxiliary dam body (2) at the rear side.

4. The multi-layer dam hydroelectric power generation system according to claim 1, characterized in that: The drainage system guides water flow through pipes laid between the main dam body (1) and the last layer of auxiliary dam body (2), and between two adjacent groups of auxiliary dam bodies (2) in front and behind.

5. The multi-layer dam hydroelectric power generation system according to claim 1, characterized in that: The main dam body (1) adopts a traditional dam structure.

6. The control method of the multi-layer dam hydroelectric power generation system according to claims 1-5, characterized in that: The steps include: Step 1: the upstream water source flows into the main dam body (1), and the generator set of the main dam body (1) generates electricity for the first time; Step 2: the water generated by the main dam body (1) flows into the first-layer auxiliary dam body (2) through the drainage system, and the generator set of the first-layer auxiliary dam body (2) generates electricity for the second time; Step 3: the water after power generation in the first layer of the auxiliary dam body (2) flows into the second layer of the auxiliary dam body (2) through the drainage system, and the generator set of the second layer of the auxiliary dam body (2) generates power for the third time; Step 4, and so on, until the power generation of the last layer of the auxiliary dam body (2) is completed.

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