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Peak shaving unit combination optimization method based on wind storage combined system

A technology for wind-storage combined and peak-shaving units, which is applied in wind power generation, energy storage, and exchange networks with energy trade/energy transmission authority. Effect

Active Publication Date: 2020-03-06
SHENYANG POLYTECHNIC UNIV
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  • Description
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Problems solved by technology

Since the traditional power grid peak regulation only adds energy storage to participate in peak regulation on the original basis, it does not incorporate the combined wind storage system into the peak regulation unit at the same time, so as to optimize the combination of peak regulation units

Method used

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  • Peak shaving unit combination optimization method based on wind storage combined system
  • Peak shaving unit combination optimization method based on wind storage combined system
  • Peak shaving unit combination optimization method based on wind storage combined system

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Embodiment Construction

[0037] The invention will be further described below in conjunction with the accompanying drawings and specific implementation examples.

[0038] Such as figure 1 As shown, an optimization method for the combination of peak-shaving units based on the combined wind-storage system includes the following steps:

[0039] Step 1: In this embodiment, the installed capacity of a certain thermal power unit is 1000MW, among which there are 3 units with an output active power of 100MW, 8 units with an output active power of 50MW, and 6 units with an output active power of 30MW There are 6 units with an output active power of 20MW. It is assumed that there are 30 wind power generators and an energy storage battery in the combined wind storage system. The rated output power of the wind power generation is 200MW, and the rated output power of the energy storage battery is 200MW. The electric load power used by the user at time t is P s =800MW;

[0040] Cut-in wind speed v in a wind turb...

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Abstract

The invention provides a peak shaving unit combination optimization method based on a wind storage combined system. The method comprises the steps: calculating the active power outputted by a wind power generator, then calculating the active power outputted by an energy storage battery, and obtaining the active power outputted by the wind storage combined system; and finally, establishing a targetfunction for solving the optimal combination of peak shaving units based on the wind storage combined system, and reducing the use quantity of thermal power units by adding the wind storage combinedsystem, so that the active power output by the thermal power units is kept in a stable fluctuation range when the active power of the thermal power units is in a specified output range. After the windstorage combined system is added, the use number of the thermal power units is reduced, the peak shaving cost is reduced, environmental pollution is reduced, and an electric power system can operatesafely and reliably.

Description

technical field [0001] The invention relates to the field of peak-shaving unit combinations in electric power systems, in particular to an optimization method for peak-shaving unit combinations based on a combined wind-storage system. Background technique [0002] With the development of renewable energy, the proportion of renewable energy in the grid continues to increase, and the system is facing increasing pressure for peak regulation. Since the traditional power grid peak regulation only adds energy storage to participate in peak regulation, it does not incorporate the combined wind storage system into the peak regulation unit at the same time to optimize the peak regulation unit combination. Contents of the invention [0003] Aiming at the deficiencies of the existing technology, the present invention joins the wind-storage combined system to optimize the peak-shaving units of the power grid. For this reason, the present invention proposes a method for optimizing the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00H02J3/32H02J3/38H02J3/48
CPCH02J3/008H02J3/32H02J3/48Y02E10/76Y02E70/30
Inventor 滕云田龙飚孙鹏左浩王泽镝吴磊袁元缘刘硕弓伟孙月莹
Owner SHENYANG POLYTECHNIC UNIV
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