Hydropower station group monthly transaction plan electric quantity decomposition method considering power grid section constraints

A technology for hydropower station groups and hydropower stations, which is applied in computing, electrical digital data processing, and special data processing applications, etc. It can solve problems such as complex grid-connected relationships of hydropower stations, affecting power generation methods and grid-connected scales of hydropower stations, etc.
CN110400232AActive Publication Date: 2019-11-01YUNNAN POWER GRID
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
YUNNAN POWER GRID
Publication Date
2019-11-01

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Abstract

The invention relates to a hydropower station group monthly transaction plan electric quantity decomposition method considering power grid section constraints, and belongs to the technical field of hydropower dispatching operation. According to the method, the monthly transaction plan electric quantity decomposition scheme of the hydropower station group can be quickly determined by adopting the multi-dimensional search algorithm by taking minimum water consumption in the scheduling period as a target and considering the main transmission section control limit of the power grid. Firstly, monthly transaction plan electric quantity of each power station is extracted, and a hydropower station group water consumption minimum model considering power grid transmission section limitation is constructed; secondly, a multi-dimensional search algorithm is constructed from three dimensions of time, a power station and a feasible region, a check correction strategy is introduced for power grid section limit constraints, namely, loosening is performed, and then optimization calculation is performed, whether the output of each section violates the constraints one by one according to an optimization result is checked, and if the output violates the constraints, an equal proportion reduction and load transfer strategy are adopted to ensure that section safety constraints are met. The power generation water consumption of the system can be effectively reduced, and a technical thought is provided for medium-and-long-term transaction plan execution in a power market environment.
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Description

technical field

[0001] The invention belongs to the technical field of hydropower dispatching operation, and in particular relates to a method for decomposing electricity in monthly transaction plans of hydropower station groups in consideration of grid section constraints. Background technique

[0002] The last decade or so has been a period of rapid development of my country's hydropower and power grid construction. Cascade hydropower stations in the main streams of the Jinsha River, Lancang River, and Yalong River in the southwest have been put into operation in clusters, forming a number of large-scale cascade hydropower stations with an installed capacity of over 10 million kilowatts. system, the national hydropower installed capacity also increased rapidly from breaking through 100 million kW in 2004 to 350 million kW in 2018, an increase of up to 2.5 times; Qiao DC, Niucong DC, Jinzhong DC and other UHV DC connection lines are used as links to realize the cross-basin an...

Claims

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