A real-time power system balancing method considering the fluctuation characteristics of large-scale wind power

A power system and wind power technology, which is applied in the field of real-time balance of power systems considering the fluctuation characteristics of large-scale wind power, and can solve problems such as aggravating system power imbalance

Active Publication Date: 2019-07-26
STATE GRID HUNAN ELECTRIC POWER +2
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Problems solved by technology

The increasing installed capacity of wind power has increased the uncertainty and volatility of the power on the power generation side, exacerbating the imbalance of system power

Method used

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  • A real-time power system balancing method considering the fluctuation characteristics of large-scale wind power
  • A real-time power system balancing method considering the fluctuation characteristics of large-scale wind power
  • A real-time power system balancing method considering the fluctuation characteristics of large-scale wind power

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Embodiment Construction

[0076] In order to facilitate a better understanding of the technical solution provided by the present invention, the following is an example of the actual operation data of a power grid in a province in China with a typical day of low load during the wet season to study the application of this method in power dispatching operation.

[0077] The actual load curve, wind power output curve and net load curve of a typical day with small load in wet season are attached image 3 shown.

[0078] According to the analysis needs, the sampling time interval is set to 5min and 15min respectively, then the fluctuations of the adjacent sampling points of the net load are shown in the attached Figure 4 And attached Figure 5 shown.

[0079] By analyzing the fluctuations of the adjacent sampling points of the net load at sampling time intervals of 5 min and 15 min, the maximum positive fluctuation and the maximum reverse fluctuation of the net load at different sampling time intervals on...

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Abstract

The invention provides a power system real-time balancing method considering large-scale wind power fluctuation characteristics. The power system real-time balancing method comprises the steps of: acquiring an ultra-short-term power load forecasting curve of a power system, an ultra-short-term power forecasting curve of a scheduled caliber wind power total output and operating data of various types of units in real time; calculating to obtain a net load power curve of the power system according to the ultra-short-term power load forecasting curve and the ultra-short-term power forecasting curve; calculating net load power fluctuations according to the net load power curve; analyzing safety constraint conditions of the various types of units in the power system according to the obtained operating data of the various types of units in the power system, and determining fast adjustment capabilities of the various types of units conforming to the safety constraint conditions; and matching the net load power fluctuations with the fast adjustment capabilities of the various types of units in the power system, so as to obtain an optimal power system real-time balancing scheme. The power system real-time balancing method provides the real-time balancing scheme for the scheduling operation of the power system, and ensures the safety operation of the power system and the optimal consumption of clean energy.

Description

technical field [0001] The invention belongs to the technical field of electric power system dispatching operation, and in particular relates to a real-time balancing method of electric power system considering large-scale wind power fluctuation characteristics. Background technique [0002] When the total power generation of the power system is equal to the total load (that is, power consumption), the frequency of the system remains stable; when the balance between power generation and load is lost, the frequency of the system will fluctuate; a serious imbalance between power generation and load power will appear in the power system The frequency collapsed, leading to large-scale power outages. Wind power output has the characteristics of intermittent and volatility. With the rapid development of wind power installed capacity, the grid connection of large-scale wind power has brought severe challenges to the safe operation of the power system to a large extent. The increas...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q50/06G06Q10/06
CPCG06Q10/0631G06Q50/06Y04S10/50
Inventor 向萌张斌左剑呙虎张可人崔挺沈阳武陈道君李晨坤谢晓骞
Owner STATE GRID HUNAN ELECTRIC POWER
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