An optimization method for peak-shaving unit combination 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: 2021-10-15
SHENYANG POLYTECHNIC UNIV
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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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  • An optimization method for peak-shaving unit combination based on wind-storage combined system
  • An optimization method for peak-shaving unit combination based on wind-storage combined system
  • An optimization method for peak-shaving unit combination 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 example, 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 turbine...

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Abstract

The present invention provides an optimization method for the combination of peak-shaving units based on the combined wind-storage system. First, the active power output by the wind generator is calculated, and then the active power output by the energy storage battery is calculated to obtain the output of the combined wind-storage system. Active power, and finally establish the objective function for solving the optimal combination of peaking units based on the combined wind-storage system, and reduce the number of thermal power units by adding the combined wind-storage system, so that when the active power of the thermal power unit is within the specified output range, the thermal power unit The output active power is kept within a stable fluctuation range. The invention not only reduces the number of thermal power units used, but also reduces the cost of peak regulation and environmental pollution after being added to the wind-storage combined system, so that the power system can operate safely 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 Patents(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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