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Wind-power adsorption connected large-power-grid scheduling rolling planning method

A technology for connecting to power grids and large power grids. It is used in wind power generation, electrical components, circuit devices, etc. It can solve the problems of complex models and time-consuming, and achieve the effect of improving access capabilities.

Active Publication Date: 2011-08-31
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The rolling plan is a dynamic optimization from the current period to the end period. It is a NP (Non-deterministic Polynomial, non-polynomial algorithm problem) problem in mathematics. The model is complex and time-consuming

Method used

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  • Wind-power adsorption connected large-power-grid scheduling rolling planning method
  • Wind-power adsorption connected large-power-grid scheduling rolling planning method
  • Wind-power adsorption connected large-power-grid scheduling rolling planning method

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Embodiment Construction

[0017] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0018] Refer below figure 1 and figure 2 The rolling planning method for large power grid dispatching to accommodate wind power access according to an embodiment of the present invention will be described.

[0019] The large power grid dispatching rolling planning method for accommodating wind power access in the embodiment of the present invention includes the following steps:

[0020] 1) From the day-ahead planning system, obtain the output plan data of 96 points (a day is divided into 96 time periods, each time period is 15 minutes...

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Abstract

The invention relates to a wind-power adsorption connected large-power-grid scheduling rolling planning method, comprising the following steps: obtaining ahead planned output data of all conventional units from an ahead power-generation planning system; building an intraday rolling model of a wind-power adsorption connected power grid based on the ahead plan; obtaining a current system load predicted value and a total wind-power output predicted value through intraday rolling expansion short-term prediction and refreshing the output data of residual time intervals of all the conventional units in an online manner according to the system loading predicted value and the total wind-power output predicted value; and updating processing data of a single machine in optimization problems in a unit output plan. The method can well solve the effect of wind-power connection on the operation of the power grid, and the safety and economic property for power grid operation are improved while cleanenergy sources are fully utilized.

Description

technical field [0001] The invention belongs to the technical field of power system scheduling automation, and in particular relates to a rolling planning method for power generation scheduling after intermittent wind power is connected to a power grid. Background technique [0002] In order to realize the economic dispatch of the power grid, it is necessary to formulate a day-ahead plan under the condition of knowing the system load forecast, network loss correction, unit initial state, and the start-up and stop status of the unit in 96 periods of the next day (the time span of each period is 15 minutes). (the output plan of each unit in each period of the day in the future), so that the total cost of system power generation is the lowest. With the grid-connected operation of renewable energy such as wind power, some adjustments need to be made to the current plan: under the premise of maximizing the use of wind power, the power generation cost of conventional units is guar...

Claims

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Application Information

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IPC IPC(8): H02J13/00H02J3/38
CPCY02E40/72Y02E10/763Y04S10/123Y02E10/76Y02E40/70
Inventor 吴文传张伯明孙宏斌郭庆来沈伟陈建华
Owner TSINGHUA UNIV
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