CN115387973A - Tower high-integration wind power generation system based on medium-voltage double-fed wind turbine generator system - Google Patents

Abstract

The invention discloses a high-integration wind power generation system for towers based on medium-voltage double-fed wind turbines, including: a tower with a first integration layer and a second integration layer above the first integration layer; The first integration layer is equipped with grid-connected primary equipment, and the second integration layer is equipped with grid-connected secondary equipment; in the 10kV grid-connected system, there is no need to configure a large-capacity step-up substation; the structure is compact, the land area is small, highly integrated, and there is no fan tower Occupying an external land, it is more economical and more suitable for distributed wind power plants that are difficult to acquire land; the mixed tower structure is adopted, and the design of ventilation and heat dissipation holes is reserved to meet the cooling needs of multiple equipment towers; the fan tower platform is used to reserve The operation and maintenance channel can easily meet the operation and maintenance requirements inside and outside the tower; it can alarm the equipment at different locations separately, which is convenient for quickly locking the alarm location and improving the maintenance efficiency.

Description

A highly integrated tower wind power generation system based on medium-voltage doubly-fed wind turbines

technical field

The invention relates to the field of wind power tower integration, in particular to a tower highly integrated wind power generation system based on a medium-voltage double-fed wind turbine.

Background technique

With the popularization and application of decentralized wind power plants, some 10kV grid-connected wind power plants built in special places such as scenic spots and farmland are generally difficult to acquire land. However, the existing wind power plants have a large demand for construction land, long civil construction period and high cost, and the project occupies a large area, with a large area outside the wind tower, poor economic friendliness, and low integration security.

For example, a "wind power tower" disclosed in Chinese patent literature, its announcement number: CN107956649A, discloses that it includes a tower shell, which is cylindrical; Axially distributed inside the tower shell and connected to the inner wall of the tower shell; the support unit includes several support members; the support members are axially connected to the tower shell through the tower shell On the inner walls of the opposite sides of the tower shell, but this solution cannot be used to integrate other equipment.

Contents of the invention

In order to solve the problem that wind power plant equipment occupies a large area and is inconvenient for construction in the prior art, the present invention provides a high-integration tower wind power generation system based on medium-voltage double-fed wind turbines, which can achieve high integration through the built-in tower and reduce land use need.

In order to achieve the above object, the present invention provides the following technical solutions:

A tower high-integration wind power generation system based on medium-voltage doubly-fed wind turbines, including: a tower, the tower is provided with a first integration layer, and a second integration layer is arranged above the first integration layer; There is grid-connected primary equipment, and the second integration layer is equipped with grid-connected secondary equipment. The grid-connected primary equipment and secondary equipment can be integrated inside the tower, reducing the layout of equipment outside the tower, thereby reducing the land demand for wind power plants.

Preferably, it includes a doubly-fed wind power generating set, the doubly-fed wind power generating set includes a stator 10kV output part and a rotor 1.14kV output part; the doubly-fed wind power generating set is connected with a 10kV busbar. It can realize that there is no need to configure a large-capacity step-up substation.

Preferably, the first integration layer is also provided with a rotor step-up transformer, a static var generator, and a medium-voltage switchgear, and the rotor step-up transformer, the static var generator, and the medium-voltage switchgear are arranged at equal intervals. Compact structure.

Preferably, the second integration layer is also equipped with a converter integrated machine, the grid-connected secondary equipment is a grid-connected secondary panel cabinet, and the grid-connected secondary panel cabinet is divided into two symmetrically arranged on the second integration layer. The all-in-one machine is located between two grid-connected secondary cabinets. The structure is compact and no land outside the tower is required.

Preferably, the first integrated floor is also provided with an elevator and a basic manhole, the elevator extends to the second integrated floor, the first integrated floor is connected to the base layer at the bottom of the tower, and the basic manhole extends to the base layer at the bottom of the tower. To facilitate the realization of operation and maintenance requirements.

Preferably, the first integrated layer is also provided with a tower door, a fire extinguisher and a cable tray, and the cable tray extends to the second integrated layer; the tower includes a mixed tower. The tower tube of the mixed tower is equipped with ventilation and heat dissipation holes to facilitate the heat dissipation of the equipment in the tower, and there are maintenance channels to facilitate the realization of the operation and maintenance requirements inside and outside the tower.

Preferably, it also includes a temperature and humidity sensor, the first integrated layer and the second integrated layer are respectively provided with a plurality of temperature and humidity sensors, and the temperature and humidity sensors are connected to the top of each device. Each device is connected with a temperature and humidity sensor, which can monitor the temperature and humidity of the equipment inside the tower to improve safety; and monitor each device separately to avoid inaccurate monitoring caused by too much space inside the tower. Improve the accuracy of temperature and humidity monitoring.

Preferably, each temperature and humidity sensor is connected with an alarm switch, and the alarm switch is connected with a timing circuit, and the timing circuit is connected with an alarm chip, and the alarm chip is provided with a signal transmitter. It can monitor the temperature and humidity information at each device and give an alarm, and mark each device by the time when the temperature and humidity information is obtained. When a fault occurs, the faulty device can be directly located to improve maintenance efficiency.

The present invention has the following advantages:

(1) It adopts double-fed stator medium voltage 10kV double-fed wind turbine, and there is no need to configure a large-capacity step-up substation in the 10kV grid-connected system; (2) It has a compact structure, less land area, and high integration, which greatly simplifies the operation of wind power plants. Construction, reducing land demand, shortening the civil construction period and cost, and solving the problem of large land occupation of the project. Compared with traditional project equipment layout, land occupation, and construction, it has a compact structure and no land occupation outside the fan tower, which is more economical and friendly. It is suitable for decentralized wind power plants where land acquisition is difficult; (3) It adopts a mixed tower structure and reserves ventilation and heat dissipation holes to meet the cooling needs of multiple equipment towers; use the fan tower platform to reserve operation and maintenance channels to easily realize Requirements for operation and maintenance outside the tower; (4) It is possible to separately alarm equipment located in different locations, which is convenient for quickly locking the alarm location and improving maintenance efficiency.

Description of drawings

In order to illustrate the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the drawings that are required in the description of the embodiments or the prior art. Apparently, the drawings in the following description are only exemplary, and those skilled in the art can also obtain other implementation drawings according to the provided drawings without creative work.

Fig. 1 is a schematic diagram of the structure of the first integrated layer in the present invention.

Fig. 2 is a schematic structural diagram of the second integrated layer in the present invention.

In the picture:

1-medium voltage switchgear; 2-converter integrated machine; 3-rotor step-up transformer; 4-grid-connected primary equipment; 5-static var generator; 6-grid-connected secondary panel; 7-elevator; 8-basic manhole; 9-cable bridge; 10-tower door; 11-mixed tower.

Detailed ways

The implementation manner of the present invention is illustrated by specific specific examples below, obviously, the described examples are some of the examples of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

As shown in Figure 1, in a preferred embodiment, the present invention discloses a high-integrated tower wind power generation system based on a medium-voltage doubly-fed wind turbine, including: a tower, the tower is a mixed tower 11. The tower tube 11 of the mixed tower is preset with ventilation and cooling holes. The ventilation and cooling holes are used to discharge the heat generated during the operation of multiple devices in the tower tube, so as to improve the operation safety of the equipment in the tower tube. There is a first integrated layer inside the tower tube, a second integrated layer is arranged above the first integrated layer, and a base layer at the bottom of the tower is arranged below the first integrated layer; a tower door 10 is arranged on the outer edge of the first integrated layer, and the tower door 10 runs through the side wall of the tower to communicate with the inside and outside of the tower; the static var generator 5 is arranged on the left side of the tower door 10 in the first integration layer, and the medium voltage switchgear 1 is arranged side by side on the left side of the static var generator 5, and the middle There is an elevator 7 on the left side of the pressure switch cabinet 1, and the elevator 7 extends upward to the second integrated floor. The rotor step-up transformer 3 is arranged on the right side, and the fire extinguisher is arranged on the right side of the rotor step-up transformer 3; a cable bridge 9 is arranged on the right side of the first integrated layer, and the cable bridge 9 extends to the second integrated layer, and the left side of the cable bridge 9 is arranged There is a cable hole, which extends to the base layer at the bottom of the tower, and is used for power cable laying. The grid-connected primary equipment 4 is arranged on the left side of the cable hole, and the grid-connected primary equipment 4 includes incoming line cabinets, PT cabinets and grid-connected cabinets connected in sequence , Grid-connected primary equipment 4, rotor step-up transformer 3, foundation manhole 8, elevator 7, medium voltage switchgear 1 and static var generator 5 are arranged in a circle around the center of the first integration layer in turn.

As shown in Figure 2, the second centralized floor is located on the front and rear sides of the elevator 7 and is equipped with symmetrically arranged grid-connected secondary panel cabinets 6, and the converter integrated machine 2 is located on the right side of the second centralized floor.

In the second embodiment, a temperature and humidity sensor is also included, the first integrated layer and the second integrated layer are respectively provided with a plurality of temperature and humidity sensors, and the temperature and humidity sensors are connected to the top of each device. Each temperature and humidity sensor is connected with an alarm switch, and the alarm switch is connected with a counting circuit, and the counting circuit is connected with an alarm chip, and the alarm chip is provided with a signal transmitter. Each device is connected with a temperature and humidity sensor, which can monitor the temperature and humidity of the equipment inside the tower to improve safety; and monitor each device separately to avoid inaccurate monitoring caused by too much space inside the tower. Improve the accuracy of temperature and humidity monitoring. It can monitor the temperature and humidity information at each device and give an alarm, and mark each device by the time when the temperature and humidity information is obtained. When a fault occurs, the faulty device can be directly located to improve maintenance efficiency. When in use, the temperature and humidity sensor can monitor the temperature and humidity information at each device in the tower, and transmit the temperature and humidity information to the alarm switch. The alarm switch drives the counting circuit to start counting and sends a signal to the alarm chip. The alarm chip receives a signal After the signal, it will send a secondary signal to the counting circuit to stop counting and get the count value back to the alarm chip. The alarm chip will emit different signals through the signal transmitter according to the count value. When in use, each device is arranged in different positions in the tower, and the alarm chip is set as one. The temperature and humidity sensor, alarm switch and counting circuit are integrated into a module. The alarm chip is wirelessly connected to multiple integrated modules, and the integrated modules are arranged in each At each device, the counting circuit is used for timing counting, counting the time when the primary signal passes through the distance between the integrated module and the alarm chip and the time when the secondary signal passes through the distance between the integrated module and the alarm chip, because each The location of each device is different, so the above total time is different, so that according to the location of the device, the detection of the time when the signal is transmitted from the device to the chip is used to realize the alarm for different devices, and each count value represents the location of the corresponding device. It is convenient to quickly locate faults and improve maintenance efficiency.

Although the present invention has been described in detail with general descriptions and specific examples above, it is obvious to those skilled in the art that some modifications or improvements can be made on the basis of the present invention. Therefore, the modifications or improvements made on the basis of not departing from the spirit of the present invention all belong to the protection scope of the present invention.

Claims (8)

1. The utility model provides a tower section of thick bamboo high integration wind power generation system based on medium-voltage double-fed wind turbine generator system which characterized in that includes: the tower comprises a tower barrel, wherein the tower barrel is provided with a first integrated layer, and a second integrated layer is arranged above the first integrated layer; the first integration layer is provided with grid-connected primary equipment, and the second integration layer is provided with grid-connected secondary equipment.

2. The tower high-integration wind power generation system based on the medium-voltage double-fed wind turbine generator system is characterized by comprising a double-fed wind turbine generator system, wherein the double-fed wind turbine generator system comprises a stator 10kV output part and a rotor 1.14kV output part; the double-fed wind generating set is connected with a 10kV bus.

3. The high-integration wind power generation system based on the tower barrel of the medium-voltage double-fed wind turbine generator set as claimed in claim 2, wherein the first integration layer is further provided with a rotor step-up transformer, a static var generator and a medium-voltage switch cabinet, and the rotor step-up transformer, the static var generator and the medium-voltage switch cabinet are arranged at equal intervals.

4. The high-integration-level wind power generation system based on the tower of the medium-voltage double-fed wind turbine generator set according to claim 1 or 2, characterized in that the second integration layer is further provided with a converter all-in-one machine, the grid-connected secondary equipment is a grid-connected secondary disk cabinet, the grid-connected secondary disk cabinet is divided into two symmetrical devices which are arranged on the second integration layer, and the converter all-in-one machine is located between the two grid-connected secondary disk cabinets.

5. The tower high-integration wind power generation system based on the medium-voltage double-fed wind turbine generator system is characterized in that the first integration layer is further provided with an elevator and a foundation manhole, the elevator extends to the second integration layer, the first integration layer is connected with a tower bottom foundation layer, and the foundation manhole extends to the tower bottom foundation layer.

6. The high-integration wind power generation system based on the tower drum of the medium-voltage double-fed wind turbine generator set as claimed in claim 4, wherein the first integration layer is further provided with a tower drum door, a fire extinguisher and a cable bridge, and the cable bridge extends to the second integration layer; the tower barrel comprises a mixed tower barrel.

7. The high-integration-level wind power generation system based on the tower of the medium-voltage double-fed wind turbine generator system according to claim 6, further comprising a temperature and humidity sensor, wherein the first integrated layer and the second integrated layer are respectively provided with a plurality of temperature and humidity sensors, and the temperature and humidity sensors are connected to the top end of each device.

8. The high-integration wind power generation system based on the tower barrel of the medium-voltage double-fed wind turbine generator set according to claim 7, characterized in that each temperature and humidity sensor is connected with an alarm switch, each alarm switch is connected with a counting circuit, each counting circuit is connected with an alarm chip, and each alarm chip is provided with a signal transmitter.

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