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Centralized generating set of renewable energy source

A technology of renewable energy and power generation devices, applied in the direction of single-network parallel feeding arrangement, etc., can solve the problems of unstable output power of distributed power sources, unguaranteed power supply reliability, and limited application range of micro-grids, etc., to improve power supply The effect of quality, simple control strategy, and less control objects

Inactive Publication Date: 2011-09-21
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the microgrid, due to the instability of distributed power output power, the power supply reliability of non-important loads cannot be guaranteed.
Moreover, the distribution area of ​​some renewable energy such as wind energy, tidal energy, and wave energy is often too far away from the power load, so the application range of the microgrid will inevitably be limited.

Method used

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  • Centralized generating set of renewable energy source
  • Centralized generating set of renewable energy source
  • Centralized generating set of renewable energy source

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0020] combine figure 1 and figure 2 .

[0021] The main power supply ZDY1 adopts a renewable energy power generation device with a doubly-fed generator structure, such as a doubly-fed wind power generator power generation device, a doubly-fed hydropower generator power generation device, etc.;

[0022] Doubly-fed generator DFG1 can adopt brushed doubly-fed generator or brushless doubly-fed generator;

[0023] The DC-AC conversion circuit DC / AC1 adopts a controllable three-phase half-bridge circuit composed of power electronic devices such as IGBTs and MOSFETs, or other conversion circuits that can realize bidirectional flow of energy on both sides of DC and AC;

[0024] Auxiliary power sources FDY1...FDYn can use any one or more existing renewable energy power generation devices, such as photovoltaic power generation devices, fuel cells, tidal power generation devices, etc., but the number of auxiliary power sources should be greater than or equal to 1;

[0025] The energ...

Embodiment approach 2

[0029] combine image 3 .

[0030] The renewable energy centralized power generation device includes multiple main power sources ZDY1...ZDYn, the AC side of each main power source ZDY1 is connected to the grid or electric load, and the DC side of each main power source ZDY1 is connected to the first DC voltage bus DCBus1, The second DC voltage bus DCBus2 is connected.

[0031] Others are the same as the first embodiment.

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Abstract

The invention provides a centralized generating set of a renewable energy source, comprising a main power supply, a plurality of auxiliary power supplies, an energy storing device and two DC (direct current) voltage buses, wherein an AC (alternating current) side of the main power supply (ZDY1) is connected with a power grid or an electro-load, and a DC side of the main power supply (ZDY1) is connected with a DCBus 1 (direct current bus 1) and a DCBus 2 (direct current bus 2); the output of each auxiliary power supply (FDY1...FDYn) is connected to the DCBus 1 and the DCBus 2; and an output or input end of the energy storing device (CNZZ1) is connected with the DCBus 1 and the DCBus 2. The centralized generating set can realize coordination control among distributed power supplies (namely various generating sets of renewable energy sources) without the electro-load, thereby adjusting output electric energy so as to meet demands of the power grid or the electro-load.

Description

technical field [0001] The present invention relates to a power generation device, in particular to a power generation device that organically combines multiple distributed power sources to realize stable power generation operation. Background technique [0002] With the development of social economy, the demand for electric power is growing rapidly. Due to the depletion of conventional primary energy such as coal and oil required for traditional thermal power generation, the position of renewable energy power generation technology in the power industry has become increasingly prominent. Renewable energy power generation that belongs to new energy mainly includes: wind power generation, solar (photovoltaic) power generation, fuel cell power generation, (micro) gas turbine power generation, biomass power generation, geothermal power generation, tidal power generation, wave power generation, etc. Due to the unique advantages of renewable energy and the environmental protection...

Claims

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Application Information

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IPC IPC(8): H02J3/38
Inventor 张强姜云桥刘政宇张敬南张镠钟李军毕洪大
Owner HARBIN ENG UNIV
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