Ocean energy multi-energy hybrid power supply system

A technology of power supply system and energy storage system, applied in the direction of single-grid parallel feeding arrangement, etc., can solve problems such as lack of research, and achieve the effect of improving conversion efficiency and reliable system safety protection function

Inactive Publication Date: 2016-02-10

OCEAN UNIV OF CHINA

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AI-Extracted Technical Summary

Problems solved by technology

Compared with the above power generation systems, there is a lack of research on ocean energy power generation devices and ocean energy multi-energ...

Abstract

The present invention relates to an ocean energy multi-energy hybrid power supply system which comprises an ocean energy power generation device group, a grid-connected control cabinet group, a bus switchgear, a control station, an energy storage system and a user load. The ocean energy power generation device group is electrically connected to the grid-connected control cabinet group and the bus switchgear orderly. The bus switchgear is electrically connected to the energy storage system, the user load and an external grid respectively. The ocean energy power generation device group, the grid-connected control cabinet group and the bus switchgear are electrically connected to the control station respectively. The ocean energy power generation device group comprises a combination of one or more devices in the group consisting of a wave energy power generation device, a tidal energy power generation device, a tidal current energy and a temperature difference energy generation device. Each power generation device in the ocean energy power generation device group is individually connected to the each grid-connected control cabinet of the grid-connected control cabinet group and the control station respectively. Each of the grid-connected control cabinet of the grid-connected control cabinet group is connected to the control station. According to the ocean energy multi-energy hybrid power supply system, multiple ocean energies are comprehensively utilized to carry out hybrid power generation, and the stable electric energy output is realized.

Application Domain

Single network parallel feeding arrangements

Technology Topic

Electric energyPower grid +8

Image

Examples

Experimental program(3)

Example Embodiment

[0018] Example 1:

[0019] like figure 1 Shown: the present invention includes a marine energy power generation device group 1, a grid-connected control cabinet group 2, a confluence switch cabinet 3, a console 7, an energy storage system 6 and a user load 5; the marine energy power generation device group 1 is connected to the grid-connected control cabinet in sequence. Group 2, the confluence switch cabinet 3 is electrically connected, the confluence switch cabinet 3 is respectively electrically connected with the energy storage system 6, the user load 5 and the external power grid 4, the marine energy power generation device group 1, the grid-connected control cabinet group 2, and the confluence switch cabinet 3 are respectively It is electrically connected to the console 7 . Ocean energy power generation device group 1 is a combination of wave energy power generation device 11, tidal energy power generation device 12, tidal energy power generation device 13 and thermoelectric power generation device 14; grid-connected control cabinet group 2 includes grid-connected control cabinet A21, grid-connected control cabinet B22, the grid-connected control cabinet C23 and the grid-connected control cabinet D24; the wave energy power generation device 11 is connected to the grid-connected control cabinet A21, the tidal energy power generation device 12 is connected to the grid-connected control cabinet B22, and the tidal energy power generation device 13 is connected to the grid-connected control cabinet C23, The thermoelectric power generation device 14 is connected to the grid-connected control cabinet D24, the wave energy power generation device 11, the tidal energy power generation device 12, the tidal energy power generation device 13 and the thermoelectric power generation device 14 are respectively connected to the console 7; the grid-connected control cabinet A21, the grid-connected control The cabinet B22 , the grid-connected control cabinet C23 and the grid-connected control cabinet D24 are respectively connected to the console 7 .

[0020] The grid-connected control cabinet A21, the grid-connected control cabinet B22, the grid-connected control cabinet C23, and the grid-connected control cabinet D24 all include V/F converters and P/Q converters.

[0021] The operation console 7 includes an HMI panel, a power monitoring module, a real-time data monitoring display and a control switch.

[0022] The energy storage system 6 is a battery pack. When the user's load cannot consume all the power, the battery pack is charged. When the generated power cannot meet the user's load demand, it will be supplemented by the battery pack. Balance power generation peak and power consumption peak to ensure stable output of electric energy.

Example Embodiment

[0023] Example 2:

[0024] like figure 2 Shown: Except for the following differences, the others are the same as in Example 1. The marine energy power generation device group 1 is a combination of four wave energy power generation devices 11; the grid-connected control cabinet group 2 includes the grid-connected control cabinet A21, the grid-connected control cabinet B22, the grid-connected control cabinet C23, and the grid-connected control cabinet D24; four The wave energy power generation devices 11 are respectively connected to the grid-connected control cabinet A21, the grid-connected control cabinet B22, the grid-connected control cabinet C23 and the grid-connected control cabinet D24, and the four wave energy power generation devices 11 are respectively connected to the console 7; the grid-connected control cabinets A21, The grid-connected control cabinet B22 , the grid-connected control cabinet C23 and the grid-connected control cabinet D24 are respectively connected to the console 7 .

Example Embodiment

[0025] Example 3:

[0026] like image 3 Shown: Except for the following differences, the others are the same as in Example 1. The marine energy power generation device group 1 is a combination of two tidal energy power generation devices 12 and a thermoelectric power generation device 14; the grid-connected control cabinet group 2 includes a grid-connected control cabinet A21, a grid-connected control cabinet B22, and a grid-connected control cabinet C23; two The two tidal power generation devices 12 are respectively connected to the grid-connected control cabinet A21 and the grid-connected control cabinet B22, the thermoelectric power generation device 14 is connected to the grid-connected control cabinet C23, and the two tidal energy power generation devices 12 and the thermoelectric power generation device 14 are respectively connected to the console 7 ; The grid-connected control cabinet A21, the grid-connected control cabinet B22 and the grid-connected control cabinet C23 are connected to the console 7 respectively.

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