CN204984728U - Power generation facility can be united to marine wind power and ocean trend - Google Patents

Abstract

An offshore wind power and ocean tidal current energy combined power generation device mainly includes an offshore wind power generation sub-system, a tidal current power generation sub-system, a supporting foundation system, and an electric energy transmission system; the offshore wind power generation sub-system is fixed above the sea level through a supporting foundation system, and the supporting foundation The system is in the form of a single-pile foundation. The tidal current energy generation sub-system is installed next to the supporting foundation system through an L-shaped support frame. The electric energy transmission system transmits the electricity generated by the offshore wind power generator and the tidal current generator to the power grid; the utility model Make full use of limited ocean space resources, improve the utilization rate of ocean resources, increase the economic benefits of offshore wind farms, and the tidal current energy generation subsystem has a yaw function, which can fully obtain tidal current energy and increase the power generation rate of equipment.

Description

An offshore wind power and ocean tidal current energy combined power generation device

technical field

The utility model relates to the technical field of offshore wind power and ocean energy power generation, in particular to an offshore wind power and ocean tidal current energy combined power generation device.

Background technique

With the continuous growth of domestic demand for energy, non-renewable resources such as oil are facing a trend of depletion, and renewable energy has attracted more and more attention and attention. As a new type of pollution-free and clean industry, offshore wind farms have begun to be established in my country, and offshore wind power technology has begun to be widely used. The tidal current energy, which is also rich in reserves and widely distributed, is also favored by various countries, and has great development prospects and commercial value. Since both power generation devices are located in the ocean, the combination of offshore wind power and tidal current power generation devices can effectively use limited space resources, reduce power generation costs, and improve comprehensive power generation capacity.

Because most of the traditional tidal current power generation equipment adopts the blade structure and the installation position is relatively fixed, when the tidal flow direction changes, the equipment cannot fully obtain energy, which reduces the power generation efficiency of the equipment. In addition, the three commonly used fixing methods for the carrier of tidal current energy generation equipment - pile type, floating type and subsea type, each have their disadvantages: the subsea type has a low flow rate near the bottom, which is not easy to maintain and recycle; the floating type Anchoring is greatly affected by wind and waves, and the stability is not good; although the pile type is relatively stable, the cost is high.

Contents of the invention

In order to overcome the above-mentioned shortcomings of the prior art, the purpose of this utility model is to provide an offshore wind power and ocean tidal current energy combined power generation device, which shares the same support base, reduces the development cost, increases the economic benefits of the offshore wind farm, and uses The new tidal current energy generation device has a yaw function, which can fully obtain tidal current energy and increase the power generation rate of the equipment, so as to make full use of the limited space resources of the ocean and improve the utilization rate of marine resources.

In order to achieve the above object, the technical solution adopted by the utility model is:

An offshore wind power and ocean tidal current energy combined power generation device, comprising:

Offshore wind power generation subsystem 1 for realizing wind power generation;

Tidal current energy generation sub-system 2 for realizing tidal current energy generation;

A supporting foundation system 3 for fixing the offshore wind power generation subsystem 1 above sea level and fixing the tidal current energy generation subsystem 2 below;

And, an electric energy transmission system 4 for transmitting the electricity generated by the offshore wind power generation subsystem 1 and the tidal current energy generation subsystem 2 to the grid.

The offshore wind power generation sub-system 1 includes a blade 1-1, the blade 1-1 is connected to a gearbox 1-3 through a rotating shaft 1-2, the gearbox 1-3 is connected to a generator 1-4, and the wind energy makes the blade 1-1 The rotation drives the gear box 1-3 to provide power to the generator 1-4 to generate electricity, and the generated electric power is transmitted outwards through the cable 4-2 connected with the generator 1-4.

The tidal current energy generation sub-system 2 includes a conical rotating body 2-1, the tail of the conical rotating body 2-1 is connected with the motor shaft 2-5 of the generator two 2-2 through a bearing 2-4, and the generator two 2 -2 is installed on the L-shaped support frame 2-3, and the ocean tide provides power to the generator 2-2 through the rotation of the conical rotating body 2-1 to generate power, and the generated power is connected to the generator 2-2. Cable 4-2 is conveyed outwards.

The conical rotating body 2-1 is provided with equally spaced Archimedes spiral grooves, and Archimedes spiral plates 2-6 perpendicular to the grooves are installed in the spiral grooves.

The tidal current energy generation sub-system 2 is provided with a direction sensor 2-8 for receiving the information of the tidal current flow direction.

The L-shaped support frame 2-3 is provided with a yaw device 2-7 for changing the direction of the tidal current energy generating device.

The supporting foundation system 3 is a monopile foundation structure fixed on the seabed.

The electric energy transmission system 4 includes a cable 4-2 connected to the output power of the offshore wind power generation subsystem 1 and the tidal current energy generation subsystem 2, the cable 4-2 is connected to the transformer 4-1, and the transformer 4-1 is connected to the input The electric energy is integrated and processed, and the integrated and processed electric power is sent to the grid.

The utility model can adopt a control system for power generation control, and the control system includes:

The tidal current energy control card 8 receives and responds to the sensor information containing direction parameters of the tidal current energy generation subsystem 2;

The offshore wind turbine control card 9 receives and responds to the sensor information of the offshore wind power generation subsystem 1 including wind speed, generator speed, and power parameters;

The environment control card 10 receives and responds to surrounding environment information;

The transformer switch control card 11 is connected with the environmental control card 10 to control the start and stop of the transformer 4-1;

The fast router 7 realizes the communication function, the first input/output of the tidal current energy control card 8 and the fast router 7 is connected, the second input/output of the fast router 7 is connected with the offshore wind turbine control card 9, and the third of the fast router 7 Input/output is connected through environment control card 10 and transformer control card 11,

The industrial computer 6 is connected with the fourth input/output of the fast router 7, receives information and provides control instructions;

The shore control unit 5 is connected with the industrial computer 6 to provide remote control instructions.

The tidal current energy control card 8 adjusts the position of the tidal current energy generating device according to the direction of the measured tidal current according to the direction sensor information received, so that the axial direction of the tidal current energy generating device is consistent with the tidal current flow, thereby obtaining maximum energy;

The offshore wind turbine control card 9 adjusts the direction of the wind turbine and the speed of the generator according to the received wind speed, generator speed, and power parameter information, so as to achieve the purpose of being in the best operating state, obtaining the highest capture efficiency, and stably outputting power; At the same time, the offshore fan control card 9 receives environmental information including temperature information in the cabin, and monitors the working environment status in the cabin;

The environmental control card 10 judges according to the received environmental information. If the environment is judged to be bad, it sends an instruction to activate the transformer switch control card 11 to realize the shutdown of the whole system for protection.

Compared with the prior art, the utility model adopts a new design structure, has a yaw function, a tidal current energy conversion device with a high absorption rate, and adopts a joint power generation system of an offshore wind power generation device and a tidal current power generation device, which has the following features advantage:

(1) The offshore wind power generation device and the tidal current energy generation device share a single pile foundation and electrical equipment such as transformers and cables, which saves equipment overhead costs, makes full use of wind energy, tidal current energy and renewable energy, and improves resource utilization in a limited space rate, increasing the economic benefits of equipment power generation.

(2) Compared with the traditional tidal current energy generation device, the new type and high absorption rate tidal current energy generation equipment: it has a yaw function, which can adjust the direction of the tidal current energy generation device, thereby improving the power generation efficiency of the equipment.

(3) Since the new type and high absorption rate tidal current energy generation equipment adopts the form of Archimedes spiral plate, the blade form of the traditional tidal current energy generation device is abandoned, the installation is convenient, the construction cost is low, and the maintenance and repair cost is low.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a schematic diagram of a tidal current energy generating device of the present invention.

Fig. 3 is a schematic diagram of the control system of the combined power generation device of the present invention.

detailed description

The implementation of the utility model will be described in detail below in conjunction with the accompanying drawings and examples.

Referring to Fig. 1, the specific technical solution of the utility model is: a set of offshore wind power and tidal current energy combined device mainly includes four parts: offshore wind power generation sub-system 1, tidal current energy generation sub-system 2, supporting foundation system 3 and electric energy transmission system 4. The offshore wind power generation sub-system 1 is fixed above the sea level through a supporting foundation system 3, which is in the form of a monopile foundation. The tidal current energy generation sub-system 2 is installed next to the supporting foundation system 3 through an L-shaped support frame. The electric energy transmission system 4 transmits the electricity generated by the offshore wind generators and tidal current generators to the grid.

Specifically, the offshore wind power generation sub-system 1 includes four parts: a blade 1-1, a rotating shaft 1-2, a gearbox 1-3, and a generator 1-4. The rotating shaft 1-2 connects the blade 1-1 outside the fan with the gear box 1-3 in the nacelle, the gear box 1-3 is connected with the generator 1-4, and the generator 1-4 is connected with the cable 4-2. Power delivery.

Referring to Fig. 2, the tidal current energy generation subsystem 2 includes three parts: a conical rotating body 2-1, a generator 2-2 and an L-shaped support frame 2-3. Wherein the tail of the conical rotating body 2-1 is connected with the motor shaft 2-5 of the generator 2-2 through the bearing 2-4, and the generator 2-2 is installed on the L-shaped support frame 2-3 and connected with the cable 4-2 Connected for power transmission. The supporting foundation system 3 is a monopile foundation structure fixed on the seabed. The transformer 4-1 integrates and processes the electric energy generated by the offshore wind power generation device and the tidal current energy generation device, and transmits the power to the grid through the cable 4-2.

Further, the conical rotating body is provided with equally spaced Archimedes spiral grooves, and the Archimedes spiral plate 2-6 perpendicular to the groove is installed in the spiral grooves, the rear part of the conical rotating body 2-1 and The motor shaft 2-5 of the rear generator 2-2 is directly connected, and a bearing 2-4 is arranged in the middle to play a fixed support role. The generator is fixed on the single pile foundation through the L-shaped support frame 2-3, and the tidal current energy generation sub-system 2 is provided with a direction sensor 2-8 for receiving the information of the tidal current flow direction. The supporting body is provided with a yaw device 2-7 for changing the direction of the tidal current energy generating device.

Referring to Fig. 3, the control system of the offshore wind power generation and tidal current energy combined power generation device includes an onshore control unit 5, an industrial computer 6, a fast router 7, a tidal current energy control card 8, a wind turbine control card 9, an environmental control card 10, and a transformer control card 11 . The first input/output of the tidal current control card 8 and the fast router 7 is connected, the second input/output of the fast router 7 is connected with the wind turbine control card 9, and the third input/output of the fast router 7 is controlled by the environment control card 10 and the transformer The card 11 is connected, the fourth input/output of the fast router 7 is connected with the industrial computer 6, and the industrial computer 6 is connected with the shore control unit 5.

The working principle of the utility model is:

The wind on the sea blows the blades 1-1 of the offshore wind power generation subsystem 1 to make it rotate, convert the wind energy into mechanical energy, and then drive the generator 1-4 behind through the connected rotating shaft 1-2 and gear box 1-3 Rotation converts mechanical energy into electrical energy output. The control system will detect various parameter information and issue instructions to keep the wind turbine in the best working condition and output power smoothly. At the same time, the sea will flow along with the tidal current. When the tidal current flows to the conical rotating body 2-1 of the tidal current energy generation sub-system 2, it will encounter the resistance given by the conical rotating body. After flowing through the Archimedes spiral plate 2 When -6, the Archimedes spiral plate 2-6 will be provided with an impact force to make the entire conical rotating body rotate, and the tidal current energy will be converted into rotational mechanical energy. The rear part of the conical rotating body is directly connected with the motor shaft 2-5 of the generator side 2-2, which drives the motor shaft to rotate and then converts mechanical energy into electrical energy output, and a rolling bearing 2-4 is arranged between the two to support the connection . The direction sensor 2-8 detects the flow direction of the tidal current in real time. When the tidal current flow direction deviates from the axial direction of the tidal current energy generation device, the control system will issue an instruction to make the yaw device 2-7 in the support body 2-3 drive the tidal current energy generation device Rotate to adjust the direction of the axis of the tidal current energy generating device so that it is always parallel to the direction of the tidal current to increase the power generation.

The control strategy of offshore wind power generation and tidal current energy combined power generation device is as follows: each control board is selected as FPGA real-time control board, the control cycle is short, and the control process of signal input, calculation and output is completed within 4-10ms. When the tidal current energy control card 8 receives the direction sensor information, it will adjust the direction of the tidal current energy generating device according to the measured tidal current flow direction, so that the axial direction of the tidal current energy generating device is consistent with the tidal current flow direction, thereby obtaining the maximum energy. When the offshore wind turbine control card 9 receives parameter information such as wind speed, generator speed, power, etc., it will adjust the direction of the wind turbine and the speed of the generator, so that the wind turbine is in the best operating state and obtains the highest capture efficiency. The environmental control card 10 is connected with a plurality of sensors to receive the information of the surrounding environment and make a response. When the environment is extremely bad, an instruction is sent to make the transformer switch control card 11 act, so as to realize the shutdown and start of the whole system to protect the device. The fast router 7 communicates with each control card, the industrial computer and the onshore central control room through the network protocol to complete the transmission of data and control commands.

Claims (9)

1. offshore wind farm and an Ocean Tidal Current Energy combined power generation device, is characterized in that, comprising:

For realizing the Oversea wind power generation subtense angle (1) of wind-power electricity generation;

For realizing the marine tidal-current energy power generation sub-system (2) of marine tidal-current energy generating;

For described Oversea wind power generation subtense angle (1) being fixed on more than sea level and described marine tidal-current energy power generation sub-system (2) being fixed on the brace foundation system (3) of b.s.l.;

And, for described Oversea wind power generation subtense angle (1) and marine tidal-current energy power generation sub-system (2) electricity being transported in the lump the power delivery system (4) in electrical network.

2. offshore wind farm and Ocean Tidal Current Energy combined power generation device according to claim 1, it is characterized in that, described Oversea wind power generation subtense angle (1) comprises blade (1-1), blade (1-1) connects gear-box (1-3) by rotating shaft (1-2), gear-box (1-3) is connected with generator one (1-4), blade (1-1) is rotated wind energy thus driven gear case (1-3) provides power to generate electricity to generator one (1-4), and institute's electricity is outwards carried by the cable (4-2) be connected with generator one (1-4).

3. offshore wind farm and Ocean Tidal Current Energy combined power generation device according to claim 1, it is characterized in that, described marine tidal-current energy power generation sub-system (2) comprises conical solid of rotation (2-1), the afterbody of conical solid of rotation (2-1) is connected with the motor shaft (2-5) of generator two (2-2) by bearing (2-4), generator two (2-2) is arranged on L-type supporting frame (2-3), sea tide provides power to generate electricity by the rotation of conical solid of rotation (2-1) to generator two (2-2), institute's electricity is outwards carried by the cable (4-2) be connected with generator two (2-2).

4. offshore wind farm and Ocean Tidal Current Energy combined power generation device according to claim 3, it is characterized in that, described conical solid of rotation (2-1) is provided with equally spaced archimedean spiral groove, is provided with the Archimedian screw plate (2-6) perpendicular to groove in spiral chute.

5. offshore wind farm and Ocean Tidal Current Energy combined power generation device according to claim 1, it is characterized in that, described marine tidal-current energy power generation sub-system (2) is provided with direction sensor (2-8), is used for receiving the information that trend flows to.

6. offshore wind farm and Ocean Tidal Current Energy combined power generation device according to claim 3, is characterized in that, being provided with the yaw device (2-7) for changing tidal current energy generating equipment direction in described L-type supporting frame (2-3).

7. offshore wind farm and Ocean Tidal Current Energy combined power generation device according to claim 1, it is characterized in that, described brace foundation system (3) is single pile formula fondational structure, is fixed on seabed.

8. offshore wind farm and Ocean Tidal Current Energy combined power generation device according to claim 1, it is characterized in that, described power delivery system (4) comprises the cable (4-2) be connected with marine tidal-current energy power generation sub-system (2) output power with described Oversea wind power generation subtense angle (1), cable (4-2) is connected with transformer (4-1), the electric energy of transformer (4-1) to input carries out integration process, and the electric power integrated after process is delivered to electrical network.

9. offshore wind farm and Ocean Tidal Current Energy combined power generation device according to claim 1, is characterized in that, adopt control system to carry out Generation Control, described control system comprises:

Marine tidal-current energy control card (8), receives marine tidal-current energy power generation sub-system (2) sensor information containing directioin parameter and reacts;

Offshore wind turbine control card (9), receives Oversea wind power generation subtense angle (1) sensor information containing wind speed, generator speed, power parameter and reacts;

Environmental Kuznets Curves card (10), receives surrounding enviroment information and reacts;

Transformer switch control card (11), is connected with environmental Kuznets Curves card (10), the start and stop of control transformer (4-1);

Fast router (7), realize communication function, described marine tidal-current energy control card (8) is connected with the first I/O of fast router (7), second I/O of fast router (7) is connected with offshore wind turbine control card (9), 3rd I/O of fast router (7) is connected with transformer control card (11) by environmental Kuznets Curves card (10)

Process control machine (6), be connected with the 4th I/O of fast router (7), reception information also provides control command;

Control unit (5) on the bank, is connected with process control machine (6), provides remote control commands.