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Multi-time-scale flexible load scheduling method for handling wind power uncertainties

A multi-time scale, flexible load technology, applied in wind power generation, single grid parallel feeding arrangement, etc.

Inactive Publication Date: 2015-10-28
STATE GRID CORP OF CHINA +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Using electric flexible loads to balance the fluctuations of intermittent renewable energy has been done to a certain extent, but there are still two levels of problems to be solved. One is the time dimension. It is necessary to adapt to prediction errors in different time dimensions and adjust the scope of resources. and its cost difference

Method used

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  • Multi-time-scale flexible load scheduling method for handling wind power uncertainties
  • Multi-time-scale flexible load scheduling method for handling wind power uncertainties
  • Multi-time-scale flexible load scheduling method for handling wind power uncertainties

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Embodiment Construction

[0057] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0058] The present invention provides a flexible load interactive scheduling method for multi-time scale coordination to cope with wind power uncertainty. The method mainly includes the following steps, and its flow chart is as follows figure 2 Shown:

[0059] 1) Divide the entire process of flexible load scheduling into four time scales, including 24 hours before the day, 1 hour within the day, 15 minutes within the day, and real-time load scheduling. The dispatch center predicts system load and wind power generation on different time scales, and publishes relevant system operation information, Scheduling demand information; the multi-time scale coordinated scheduling process diagram provided by the present invention is as follows figure 1 Shown:

[0060] A. The day-ahead 24-hour load scheduling is executed every 24 ...

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Abstract

The invention relates to a multi-time-scale flexible load scheduling method for handling wind power uncertainties. The method comprises the following steps: a scheduling center predicting a power system load and wind power generation on different time scales; the scheduling center establishing a wind power predication uncertainty model, making a thermal power / hydropower set scheduling plan and releasing power system operation information and flexible load scheduling need information; load agents, according to response characteristics of different types of flexible controllable loads, and based on a multi-agent technology, marking quotation models facilitating their own benefits for reporting to the scheduling center; the scheduling center, according to schedulable capabilities and quotation information reported by the load agents, carrying out optimization scheduling on schedulable load resources of the multiple load agents, and sending load adjusting instructions and final compensation prices to the load agents; and the load agents adjusting the electricity power of managed loads through an electricity price mechanism or a stimulation mechanism. According to the invention, the method enriches the scheduling modes for the wind power uncertainties and enhances the adjusting capability of a power network.

Description

technical field [0001] The invention relates to a smart grid electric power system scheduling operation control technology, in particular to a multi-time scale flexible load scheduling method for wind power uncertainty. Background technique [0002] Due to the "unfriendly" characteristics of wind power and other renewable energy sources such as volatility, intermittency, anti-peak regulation, and low dispatchability, it poses challenges to the traditional grid dispatching method of "power generation tracking load". Coordination and interaction between the power supply, power grid and load is not only conducive to improving the energy and power dynamic balance capability of the power system, but also conducive to the optimal allocation of large power grid resources and the improvement of comprehensive energy utilization efficiency. It is an important development of smart grid. direction. [0003] There are partial loads in the power grid, and its power consumption can be "sc...

Claims

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Application Information

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IPC IPC(8): H02J3/46
CPCY02E10/76
Inventor 王珂姚建国刘建涛杨胜春李亚平冯树海毛文博丁茂生曾丹周竞郭晓蕊
Owner STATE GRID CORP OF CHINA
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