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Day-ahead market clearing method, system and device and computer readable storage medium

A market clearing and unit technology, applied to devices and computer-readable storage media, day-ahead market clearing methods, and system fields, can solve problems such as mismatching of clearing results, over-limiting of line flow, and insufficient starting capacity.

Inactive Publication Date: 2018-10-26
GUANGDONG POWER GRID CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Insufficient consideration of demand elasticity in the day-ahead market organization will cause a mismatch between the clearing results and the actual load demand of the system, which may cause problems such as insufficient starting capacity during system operation, and line flow exceeding the limit.

Method used

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  • Day-ahead market clearing method, system and device and computer readable storage medium
  • Day-ahead market clearing method, system and device and computer readable storage medium
  • Day-ahead market clearing method, system and device and computer readable storage medium

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Embodiment Construction

[0057] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0058] The embodiment of the present invention discloses a day-ahead market clearing method, see figure 1 As shown, the method includes:

[0059] S1: Pre-establish an objective function with the goal of minimizing system operating costs;

[0060] S2: Pre-establish constraints corresponding to the objective function, which include system power balance constraints, system backup constraints, branch active power flow constraints, and unit operation constraints. ...

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Abstract

The invention discloses a day-ahead market clearing method, system and device and a computer readable storage medium. The day-ahead market clearing method comprises the steps of obtaining a day-aheadmarket clearing model comprising a target function and a constraint condition by building a target function taking minimum system running cost as a target and the constraint condition comprising machine set running constraint, calculating a initial machine set starting and stopping plan by the day-ahead market clearing model, calculating locational marginal price by the initial machine set starting and stopping plan, a safety constraint economic dispatching target function and the constraint condition, obtaining a correction declaration load more approaching to actual user load demand by the locational marginal price, and substituting the correction declaration load back to the day-ahead market clearing model so as to correct the constraint condition in the day-ahead market clearing modelto obtain a correction constraint condition. By the day-ahead market clearing method, an elastic machine set contribution plan and an elastic machine set starting and stopping plan which are more approach to the actual load demand can be obtained, so that the problems that the start-up capacity is not enough and circuit power flow exceeds a limit during system running are prevented.

Description

technical field [0001] The invention relates to the technical field of power dispatching automation, in particular to a day-ahead market clearing method, system, device and computer-readable storage medium. Background technique [0002] With the steady advancement of my country's new round of power system reform, my country's power trading is shifting from medium and long-term power trading to spot power trading with a shorter cycle; currently, 8 regions in the south (starting with Guangdong) have been used as the first batch of power pilots Started the construction and exploration of the electricity spot market. [0003] In the path selection of my country's electricity spot market, in order to guide large users and electricity sales companies to gradually adapt to spot transactions, in the initial stage of the market, the demand side only declares power demand (MW) without declaring prices. The market operator regards the demand-side declared load as a rigid boundary, and ...

Claims

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Application Information

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IPC IPC(8): H02J3/46
CPCH02J3/46H02J2203/20
Inventor 陈雨果张轩白杨刘思捷
Owner GUANGDONG POWER GRID CO LTD
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