Wind-solar-storage combined power generation system output characteristic optimization method

An optimization method and combined power generation technology, applied in photovoltaic power generation, wind power generation, energy storage, etc., can solve problems that affect the safe and stable operation of the power grid, difficulty in providing continuous and stable energy output, and poor quality of resources and energy, and achieve smooth output power , reduce the impact, and improve the effect of grid connection quality

Active Publication Date: 2014-07-23
SHANGHAI ELECTRIC POWER DESIGN INST
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Problems solved by technology

[0005] In view of the above-mentioned defects of the prior art, the present invention provides a method for optimizing the output characteristics of a wind-solar-storage combined power generation system, which solves the problems in the prior art that it is difficult to provide continuous and stable energy output for a power supply system that operates independently of wind and light, and its resources are insufficient. Stability and intermittency lead to poor energy quality, and large-scale grid connection will inevitably affect the security and stability of the grid.

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  • Wind-solar-storage combined power generation system output characteristic optimization method
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  • Wind-solar-storage combined power generation system output characteristic optimization method

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[0030] In order to make the technical problems, technical solutions, and advantages to be solved by the present invention clearer, the following will describe in detail with reference to specific embodiments.

[0031] The invention provides a method for optimizing output characteristics of a wind-solar-storage combined power generation system, the steps of which include:

[0032] 1) Use the measured average wind speed every 10 minutes with the wind tower and the wind turbine hub at the same height, and find out the wind turbine power corresponding to the wind speed, and then get the wind farm output every 10 minutes in a year, and select a typical day in a certain month It can be seen from the curve that the wind in this area is small during the day and strong at night, and the wind has strong random fluctuations. Even in a short period of time, the wind speed has irregular pulsating changes. The instability of energy brings difficulties to the use of wind energy. The relationship ...

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Abstract

The invention discloses a wind-solar-storage combined power generation system output characteristic optimization method. The method comprises the steps of calculating the obtained generated power of a wind power field on a typical day, and calculating the alternating-current output power obtained after a photovoltaic power generation system inverter at a photovoltaic power station on the typical day. After wind-solar superposed output is optimally controlled by an energy storage device, the influence of wind-solar output fluctuations on a power grid is reduced to a certain extent, meanwhile, the grid connection quality can be effectively improved, the charging and discharging process of the energy storage device is adjusted through an intelligent control dispatching system, and the aim of smoothing the output power of a wind-solar storage system can be achieved.

Description

Technical field [0001] The invention relates to the technical field of renewable energy, and specifically refers to a method for optimizing the output characteristics of a wind-solar-storage combined power generation system. Background technique [0002] With the increasingly serious energy and environmental issues, energy conservation and emission reduction issues have received widespread attention worldwide. Wind energy and solar energy are renewable and pollution-free green energy sources. Wind power and photovoltaic power generation have developed vigorously in recent years. Wind and solar power generation relies on changing weather conditions, and active power output fluctuates drastically between different periods of time. For example, the output power in the previous period was very high, and then fell to a lower level in the next period. The increasing number of renewable energy sources such as large-scale wind power and photovoltaic power generation in the system have a...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/28H02J3/32H02J3/46
CPCY02E10/56Y02E10/76Y02E70/30
Inventor 刘波袁智强顾辰方魏小淤唐勇俊
Owner SHANGHAI ELECTRIC POWER DESIGN INST
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