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Day-ahead thermal power starting optimization method and system for preventing and controlling standby shortage risk

An optimization method and technology for thermal power units, applied in system integration technology, information technology support system, photovoltaic power generation, etc., can solve problems such as lack of efficient solutions

Active Publication Date: 2021-07-06
CHINA SOUTHERN POWER GRID COMPANY +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But at the same time, in view of the lack of prevention and control backup, there is no efficient plan to optimize the start-up plan of thermal power units.

Method used

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  • Day-ahead thermal power starting optimization method and system for preventing and controlling standby shortage risk
  • Day-ahead thermal power starting optimization method and system for preventing and controlling standby shortage risk
  • Day-ahead thermal power starting optimization method and system for preventing and controlling standby shortage risk

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Embodiment 1

[0064] Such as Figure 1-3 As shown, the present invention discloses a method for optimizing the start-up of thermal power in a regional power system to prevent and control the risk of insufficient backup, including the following steps:

[0065] Step 1: The optimization goal is to obtain the thermal power start-up ratio that minimizes the total operation risk of the system in the scheduling period; set the start-up ratio set for this, read the start-up ratio set, and sequentially take out the next start-up ratio to be tested (the start-up ratio is the thermal power start-up capacity Ratio to the total thermal power generation capacity, the start-up ratio set is a variety of possible start-up ratios in the system), and the optimization objectives are as follows:

[0066]

[0067]

[0068] Among them, u: unit start-stop status; s: new energy forecast scene number; t: time (take 96 points in 24h, Nt=96); R k.s.t : when the power-on ratio is k, the operation risk at time t ...

Embodiment 2

[0107] The present invention also provides a thermal power start-up optimization system for preventing and controlling the risk of insufficient backup in the regional power system, including:

[0108] Optimal start-up ratio determination module: used to obtain the day-ahead thermal power start-up ratio that minimizes the total system operation risk within the dispatch period;

[0109] Control plan generation module: used to generate a control plan for optimization of thermal power start-up according to the proportion of thermal power start-up corresponding to the minimum total operation risk of the system in the dispatch period.

[0110] Those skilled in the art should understand that the embodiments of the present application may be provided as methods, systems, or computer program products. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furt...

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PUM

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Abstract

The invention discloses a day-ahead thermal power start-up optimization method for preventing and controlling standby shortage risks. According to the method, an available startup proportion set is searched, inflexible units such as thermal power units and the like are selected according to a cost performance ratio index sequence under a given proportion set, and operation risks of startup schemes including the inflexible units and the flexible units in various risk scenes are calculated and evaluated; and finally a day-ahead thermal power starting scheme with the minimum operation risk is selected, and a regulation and control plan in each scene is generated through comparison of optimization results under each day-ahead thermal power starting proportion. The method is suitable for optimizing the power generation and standby plan of the power system under the access of high-proportion new energy, can effectively balance the power failure or new energy abandoning risk caused by insufficient upper and lower regulation standby, and gives consideration to the operation economy while ensuring the system safety.

Description

technical field [0001] The invention belongs to the technical field of electric power system backup, and in particular relates to a method and system for optimizing the start-up of thermal power before preventing and controlling the risk of insufficient backup. Background technique [0002] Through the exploration of new energy power generation technology, combined with my country's load and energy structure, large-scale new energy grid-connected operation has become the main direction of future development. The output of wind / solar power generation is directly related to wind speed / irradiance, resulting in periodic, fluctuating and uncertain output, and its grid-connected operation will affect the overall operation of the power system. With the rapid development of new energy, the power grid's emergency backup capacity for uncertain risks of new energy must be improved more rapidly. [0003] To ensure the safety of the power grid, in order to promote the consumption of win...

Claims

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Application Information

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IPC IPC(8): H02J3/46G06Q10/04G06Q10/06G06Q50/06
CPCH02J3/466G06Q10/04G06Q10/06312G06Q50/06H02J2300/24H02J2300/28Y04S10/50Y02E40/70Y02E10/56
Inventor 谢东亮郁琛和识之王皓怀王彩蔡林君张卉琳
Owner CHINA SOUTHERN POWER GRID COMPANY