Grid multi-time-scale dispatching method

A technology with multiple time scales and scheduling methods, applied in wind power generation, circuit devices, AC network circuits, etc., can solve the problems of high system operating costs, low wind power consumption level, insufficient consideration of CAES power plants and multi-type flexible load regulation characteristics and other issues, to achieve the effect of ensuring efficient and safe economic operation, improving the level of wind power consumption, and efficient and safe economic operation

Active Publication Date: 2019-07-02
CENT CHINA BRANCH OF STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The invention provides a multi-time-scale scheduling method for power grids, which is used to solve the high system operating costs caused by the lack of full consideration of the adjustment characte...

Method used

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  • Grid multi-time-scale dispatching method
  • Grid multi-time-scale dispatching method
  • Grid multi-time-scale dispatching method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] A multi-time scale scheduling method for power grid, such as figure 1 shown, including:

[0051] The day-ahead dispatching model, the intraday dispatching model and the real-time dispatching model, which all use conventional units, wind power, CAES power stations and flexible loads as dispatching resources and optimize the operation economy, are executed sequentially to obtain the output plans of conventional units, wind power and CAES power stations, Flexible load scheduling plan, spinning reserve capacity, and AGC capacity acquisition plan. Among them, the constraints of the day-ahead scheduling model include the operation constraints of each scheduling resource at the day-ahead scale; the constraints of the intraday scheduling model include the operation constraints of each scheduling resource at the intra-day scale; the constraints of the real-time scheduling model include Operational constraints at the real-time scale and constraints for CAES power plants to parti...

Embodiment 2

[0163] A storage medium, in which instructions are stored, and when a computer reads the instructions, the computer is made to execute any one of the multi-time-scale scheduling methods for power grids as described above.

[0164] The instructions stored in the storage medium are the same as those described in Embodiment 1, and will not be repeated here.

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Abstract

The invention relates to a grid multi-time-scale dispatching method comprises steps of successively performing a day-ahead dispatching model, an intraday dispatching model and a real-time dispatchingmodel, which all uses a conventional unit, wind power, a CAES power station and a flexible load as dispatching resources and use operating economy as an optimization objective, in order to obtain theoutput plans of the conventional unit, wind power and the CAES power station, a flexible load dispatching plan, a rotary reserve capacity, and an AGC capacity acquisition plan, wherein the constraintsof each dispatching model include the operational constraints of each dispatching resource, and the constraints of the real-time dispatching model also include the constraints that the CAES power station participates in the grid AGC frequency modulation. The method takes a system including the CAES power station and the flexible load as a research object, comprehensively considers the dispatchingcharacteristics of the CAES power station and the multi-type flexible load which reduce the system air abandonment amount at different time scales, additionally considers the AGC unit rotary reserveand the auxiliary frequency modulation service of the CAES power station, effectively improves the level of wind power consumption and ensures efficient and safe economic operation of the system.

Description

technical field [0001] The invention relates to the technical field of power grid dispatching, in particular to a multi-time scale dispatching method for a power grid. Background technique [0002] The increasingly severe energy crisis and environmental pollution have prompted countries all over the world to focus on the development of renewable energy represented by wind power. However, due to the inherent unfriendly characteristics of wind power, such as intermittent and uncertain, its large-scale grid connection will bring severe challenges to the safe and economic operation of the power system, which seriously restricts the further development of wind power. [0003] In order to deal with the above challenges, scholars have carried out extensive research. Among many studies, compressed air energy storage (CAES) technology and flexible load active response technology are two effective means to solve large-scale wind power grid integration. . However, most of the existin...

Claims

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Application Information

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IPC IPC(8): H02J3/46
CPCH02J3/46H02J2203/20Y02E10/76
Inventor 鄢发齐李姚旺汪旸徐浩苗世洪周良松姚占东沈宇亮
Owner CENT CHINA BRANCH OF STATE GRID CORP OF CHINA
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