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Multi-mode space time nested dynamic output power adjusting method of hydropower station under real-time load change

A real-time load and dynamic adjustment technology, applied in the direction of single-network parallel feeding arrangement, etc., can solve the problems of not considering the minimum start-up and shutdown time constraints of the unit, the constraints of the unit's climbing rate constraints and the vibration area constraints, and it is difficult to meet the actual needs of the project, etc. Achieve the effect of reducing the number of traversing vibration zones, reducing the number of traversing states, and taking into account stability

Active Publication Date: 2016-02-03
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

At present, the real-time load adjustment method is mostly a single-mode adjustment method, such as: allocation according to unit capacity or allocation according to the principle of equal micro-increase rate. Constraints, etc., it is difficult to meet the actual needs of the project

Method used

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  • Multi-mode space time nested dynamic output power adjusting method of hydropower station under real-time load change
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  • Multi-mode space time nested dynamic output power adjusting method of hydropower station under real-time load change

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Embodiment Construction

[0035] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0036] The present invention takes Shuibuya Hydropower Station as an example to carry out example simulation to verify the effect of the present invention.

[0037] Shuibuya Hydropower Station is equipped with four 46kW units, the vibration range is [121,180]MW under the water head of 145m~170m, and the vibration range is [121,199]MW under the water head of 170m~203m. The unit ramp rate constra...

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Abstract

The invention discloses a multi-mode space time nested dynamic output power adjusting method of a hydropower station under real-time load change, and belongs to the field of energy optimized operation of hydropower. In the method, different mode adjusting strategies are made according to real-time load change. When the power station receives a new load instruction, a corresponding adjusting mode is automatically entered. The method can be used to reduce the variation amplitude of the output power of the power station, effectively avoid vibrating areas, and reduce the frequency of crossing the vibrating areas, the total water consumption rate of the power station is very close to that is calculated by planned economical operation, no obvious extra water consumption exists. The method is stable, economical and effective at the same time, and is more economical, safer and more efficient compared with the prior art.

Description

technical field [0001] The invention belongs to the field of optimized operation of hydropower energy, and more specifically relates to a method for dynamically adjusting multi-mode spatio-temporal nested output of hydropower stations under real-time load changes. Background technique [0002] The real-time load adjustment of the hydropower station is based on the daily planned operation, every certain period of time (usually 15 minutes), according to the real-time load command of the power grid, and according to certain criteria, adjust the start-stop combination of the power station unit and the load distribution among the units to obtain a new efforts to plan and execute. Real-time load adjustment should not only reduce the water consumption rate of the power station, but also avoid frequent operation of the unit to ensure the stable operation of the power station, which is a multi-objective problem. At present, the real-time load adjustment method is mostly a single-mod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/46
Inventor 周建中莫莉覃晖陈璐刘懿孙怀卫蒋志强乔祺袁柳王超卢鹏张诚吴巍欧阳文宇汪洋常楚阳谢蒙飞刘伟麦紫君高新稳李远哲黄溜
Owner HUAZHONG UNIV OF SCI & TECH
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