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New energy power generation side power prediction method and system combined with energy storage control system

An energy storage system and power prediction technology, which is applied in power generation forecasting, forecasting, and energy storage in AC networks to achieve the effects of improving accuracy, ensuring reliability, and achieving good social benefits.

Active Publication Date: 2021-07-30
HUANENG CLEAN ENERGY RES INST +2
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Problems solved by technology

Although an ordinary photovoltaic power station can cover an area of ​​several square kilometers, it is still a single point for numerical weather prediction.

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  • New energy power generation side power prediction method and system combined with energy storage control system
  • New energy power generation side power prediction method and system combined with energy storage control system
  • New energy power generation side power prediction method and system combined with energy storage control system

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Embodiment Construction

[0034] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0035] Based on the method of the present invention, high-precision optical power prediction is added to realize the collaborative function work of "energy storage control system-AGC / AVC-power prediction".

[0036]Observe the cloud information in the sky according to the real-time satellite cloud image, weather radar and ground imaging data, and extrapolate the trajectory and changes of the cloud by combining the satellite cloud image at nearby historical moments, and calculate the amount of cloud on the target power station in the future set time period Calculate and interpret the numerical weather forecast results at the same time to obtain the cloud change trend in the region where the photovoltaic power station is located in the future set time period; short-term prediction of optical power based on satellite cloud images: when the cloud amount forecast needs to b...

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Abstract

The invention discloses a new energy power generation side power prediction method and system combined with an energy storage system, and the method comprises the steps: observing the information of cloud in the sky according to a real-time satellite cloud picture, a meteorological radar and ground imaging, and obtaining the change trend of the cloud in a region where a photovoltaic power station is located in a set time period in the future; analyzing the operation state of the photovoltaic power station in a future set time period by combining the change trend of the cloud and a photovoltaic power station power generation model, and obtaining the expected output of the energy storage system by comparing the short-term power prediction value and the real-time prediction value of the photovoltaic power station; establishing an energy storage model for the energy storage system, taking the income of the photovoltaic power station, the redeemed electricity income and the reduced assessment income as objective functions, taking the energy storage model as a constraint condition, and enabling the objective function to obtain an energy storage charging and discharging judgment result of an optimal solution, namely obtaining the power generation side power of the combined power station. The accuracy of prediction and irradiance prediction is improved, and the reliability of ultra-short-term power prediction of the photovoltaic power station is ensured.

Description

technical field [0001] The invention belongs to the technical field of new energy power stations and energy storage, and in particular relates to a method and system for predicting power at the power generation side of new energy combined with an energy storage control system. Background technique [0002] Research and implement accurate forecasting of renewable energy generation based on weather data. Develop and promote technologies such as energy storage, multi-energy complementary operation and control, micro-grid, and renewable energy combined heat and power generation that enhance the grid-connected capacity of renewable energy. Give full play to the role of power big data and power trading platforms in promoting the integration and consumption of renewable energy. Realize a high degree of integration between the power grid and renewable energy sources, and promote the efficient and large-capacity distributed access and consumption of renewable energy. [0003] Elect...

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Application Information

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IPC IPC(8): H02J3/00H02J3/28H02J3/32H02J3/38G06Q10/04G06Q50/06
CPCH02J3/004H02J3/381H02J3/28H02J3/32H02J3/008G06Q10/04G06Q50/06H02J2203/10H02J2203/20H02J2300/24Y04S10/50
Inventor 朱连峻刘大为刘明义朱耿锋孙超李海建
Owner HUANENG CLEAN ENERGY RES INST
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