Optical storage combination combined-grid power generation coordination control method

A coordinated control and comprehensive control technology, applied in photovoltaic power generation, single-network parallel feeding arrangement, etc., can solve problems that are not conducive to the development and utilization of large-scale photovoltaic storage, limit the efficient use of solar energy resources, and are not suitable for long-term large-scale expansion planning of the system And other issues

Inactive Publication Date: 2013-04-17
NORTHEAST DIANLI UNIVERSITY
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Problems solved by technology

[0003] On the one hand, the traditional photovoltaic-storage combined grid-connected power generation system collects energy through the public inverter through the DC bus, which is not suitable for the long-term

Method used

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  • Optical storage combination combined-grid power generation coordination control method
  • Optical storage combination combined-grid power generation coordination control method
  • Optical storage combination combined-grid power generation coordination control method

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specific example

[0103] Specific examples: figure 1 It is a schematic diagram of the overall structure of the coordinated control system for photovoltaic power storage combined grid-connected power generation. The power output of photovoltaic power generation system 1 is mainly output by the maximum light intensity , Grid dispatch command output and the capacity limit of the energy storage system 2 The three are jointly controlled, and the energy storage system 2 measures the active power of the low-voltage side of the high-voltage booster station 4 , reactive power and busbar 3 voltage ,frequency , and using the constant voltage / frequency control strategy, the photovoltaic power generation system 1 and the energy storage system 2 are synchronously merged into the external high-voltage power grid 5 through the high-voltage booster station 4 .

[0104] Among them: integrated control of photovoltaic power generation system such as figure 2 As shown, first measure the DC voltage at ...

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Abstract

The invention relates to an optical storage combination combined-grid power generation coordination control method, which is characterized by comprising contents including photovoltaic system comprehensive control strategies, energy storage system comprehensive control strategies, optical storage combination system active power coordination control modes, optical storage combination system reactive power coordination control modes and the like, the contents can be utilized for analyzing the optical storage combination power generation coordination control, the effectiveness of the optical storage combination power generation coordination control can be fully reflected, further, the absorptive capacity of a power grid on new energy sources is improved, and the advantages of high adaptability, high practical application values and the like are realized. The optical storage combination combined-grid power generation coordination control method can be widely applied to the aspects of optical storage combination power generation system modeling simulation, combined-grid operation characteristic analysis, power grid interaction mechanism development and the like.

Description

technical field [0001] The invention is a coordinated control method for combined solar-storage grid-connected power generation, which is applied to the modeling and simulation of the combined solar-storage power generation system, the analysis of grid-connected operation characteristics, the research on the interaction mechanism with the grid, and the like. Background technique [0002] In recent years, with the rapid development of social economy, the demand for energy is increasing day by day. Environment-friendly clean and renewable energy replaces traditional fossil fuels, which is in line with the national "Twelfth Five-Year" new energy development outline and a sustainable scientific development strategy. Grid-connected photovoltaic power generation system is one of the efficient utilization forms of new energy, and will occupy an important position in the global energy structure in the future. Solar energy resources have the characteristics of strong randomness and ...

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Application Information

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IPC IPC(8): H02J3/46
CPCY02E10/56
Inventor 孔令国蔡国伟王建元潘超刘闯杨德友刘铖
Owner NORTHEAST DIANLI UNIVERSITY
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