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Pumped storage power station and new energy power generation combined optimal scheduling method and device

A pumped-storage power station, combined with new energy technology, applied in circuit devices, design optimization/simulation, power generation prediction in AC networks, etc., to achieve the effect of improving accuracy, rational utilization, and improving safety

Pending Publication Date: 2021-12-31
STATE GRID XINYUAN +1
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Problems solved by technology

This disclosure proposes an optimal solution method for the problem of non-linear effects of water head changes on power and flow during the dispatching process of pumped storage power plants, and provides a more accurate optimal dispatching scheme for pumped storage power plants combined with new energy power generation compared with the assumption of constant water head

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  • Pumped storage power station and new energy power generation combined optimal scheduling method and device
  • Pumped storage power station and new energy power generation combined optimal scheduling method and device
  • Pumped storage power station and new energy power generation combined optimal scheduling method and device

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Embodiment Construction

[0101] The present disclosure proposes a method and device for optimal dispatching of pumped storage power stations combined with new energy power generation. The present disclosure will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0102] The embodiment of the first aspect of the present disclosure proposes a method for optimal scheduling of pumped storage power stations combined with new energy power generation. The overall process is as follows figure 1 shown, including the following steps:

[0103] 1) Classify the generating power of each new energy station connected to the pumped storage power station according to historical data, and establish a relative prediction error probability model for each classification; the specific steps are as follows:

[0104] 1-1) Obtain the power generation data and corresponding time at each historical sampling time of the selected historical period of the new energy station connecte...

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Abstract

The invention provides a pumped storage power station and new energy power generation combined optimal scheduling method and device, and belongs to the technical field of power grid and energy storage system scheduling. The method comprises the steps that a pumped storage power station and new energy stations connected with the pumped storage power station serve as a combined system, and a new energy station day-ahead generated power relative prediction error scene set is established; under the scene set, a combined system pre-scheduling model containing pumped storage power stations and new energy power generation is established and solved, and the start-stop state of each pumped storage unit at each moment in the next day and the water storage of upper and lower reservoirs at each moment in the next day in each scene are obtained; and iterative optimization is conducted on the water storage of the upper and lower reservoirs to obtain an optimal scheduling scheme for combined power generation of the pumped storage power station and the new energy stations. According to the invention, an optimal solution method is provided for solving the problem that the water head change generates nonlinear influence on the power and the flow during the scheduling of the pumped storage power station, and a more accurate pumped storage power station and new energy power generation combined optimal scheduling scheme can be obtained.

Description

technical field [0001] The present disclosure relates to the technical field of power grid and energy storage system dispatching, and in particular to a method and device for optimal dispatching of pumped storage power stations combined with new energy generation. Background technique [0002] In recent years, the transformation of my country's energy structure has accelerated, and the scale of renewable energy access has continued to increase. Under the new situation, the power grid has put forward higher requirements for the access of large-scale new energy stations and the transmission of new energy power generation. Due to the large volatility of new energy power generation, there are certain difficulties in the process of dispatching new energy. Therefore, it is very necessary to consider using a power supply with a certain adjustment capability in conjunction with new energy sources to improve the dispatchability of new energy sources. [0003] Based on the current te...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/46H02J3/38H02J15/00H02J3/00G06Q50/06G06Q10/04G06F30/27
CPCH02J3/466H02J3/381H02J15/003H02J3/004G06Q50/06G06Q10/04G06F30/27H02J2300/22H02J2300/28H02J2203/20H02J2300/40G06F2111/04G06F2113/04
Inventor 王磊吕志娟高旭曹敏健胡泽春
Owner STATE GRID XINYUAN
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