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Method and device for optimizing system standby demands in power market environment

A technology for power market and backup demand, applied in market forecasting, data processing applications, marketing, etc., can solve problems such as difficult to determine backup demand, low power system security, unschedulable output of wind power, etc., and achieve the goal of improving safety Effect

Active Publication Date: 2020-03-17
ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD
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Problems solved by technology

With the grid connection of large-scale wind power, the unschedulability of wind power and the fluctuation of output make it difficult to determine the backup demand of the system
The determination of the existing reserve capacity usually directly takes the value of the reserve demand as a certain proportion of the load. This method is simple and easy to implement, but it is too subjective. If the reserve demand is configured too much, the cost will be too high; on the contrary, if the reserve demand Too little configuration will make the security of the power system too low

Method used

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  • Method and device for optimizing system standby demands in power market environment
  • Method and device for optimizing system standby demands in power market environment
  • Method and device for optimizing system standby demands in power market environment

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Embodiment Construction

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0033] see figure 1 , is a schematic flowchart of a method for optimizing system backup requirements in an electricity market environment provided by an embodiment of the present application, including:

[0034] Step S11, obtaining the preset backup demand of the power system.

[0035] The preset reserve demand is 1%-10% of the load generated by the power system at any time period.

[0036] In this embodiment, the reserve demand of the power system in the period t is defined as R(...

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Abstract

The invention discloses a method and device for optimizing system standby demands in a power market environment. The method comprises the following steps: acquiring a preset standby demand of a powersystem; establishing a combined clearing model of the electric energy duration and the standby duration, and obtaining a clearing result of the power market according to the model; obtaining the totalrisk cost of the power utilization system according to the clearing result; calculating the comprehensive cost of the electricity market; and when the comprehensive cost does not reach the preset convergence condition, adjusting a preset standby demand according to the optimization direction obtained according to the current comprehensive cost, readjusting the joint clearing model to adjust the current comprehensive cost until the adjusted current comprehensive cost reaches a preset convergence condition, and outputting the preset standby demand corresponding to the current comprehensive costreaching the convergence condition. Compared with the prior art, the standby demand is adjusted by combining the clearing result of the clearing model, so that the safety of the power system can be improved while the finally obtained standby demand meets the cost control.

Description

technical field [0001] The present application relates to the technical field of electric power dispatching, in particular to a method and device for optimizing system backup requirements in an electric power market environment. Background technique [0002] In the power system, it is often necessary to reserve a certain reserve capacity to deal with random disturbances in the operation of the power grid. Therefore, how to configure the reserve capacity of the power system is a very critical issue. With the grid connection of large-scale wind power, the unschedulability of wind power and the fluctuation of output make it difficult to determine the backup demand of the system. The determination of the existing reserve capacity usually directly takes the value of the reserve demand as a certain proportion of the load. This method is simple and easy to implement, but it is too subjective. If the reserve demand is configured too much, the cost will be too high; on the contrary, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/04G06Q10/06G06Q30/02G06Q50/06
CPCG06Q10/04G06Q10/06315G06Q30/0206G06Q50/06
Inventor 禤培正邹金谢平平
Owner ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD
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