Multi-target power generation plan decomposition and coordination calculation method for direct-current trans-regional interconnected power grid

Abstract

The invention discloses a multi-target power generation plan decomposition and coordination calculation method for a direct-current trans-regional interconnected power grid. The method comprises the following steps: firstly, constructing a trans-regional interconnected large power grid centralized multi-target day-ahead power generation and transmission plan model containing direct-current operation engineering constraints by taking minimum power generation cost, minimum carbon emission and minimum pollutant emission as targets; converting the multi-objective optimization model into a series of centralized single-objective optimization sub-problems with different preferences by utilizing a normal boundary intersection method; and finally, for each single-target optimization sub-problem, constructing a sending end and receiving end power grid decomposition coordination model based on an alternating direction multiplier method, and realizing distributed solution of a multi-target day-ahead power generation and transmission plan. According to the method, distributed solving of the multi-target day-ahead power transmission plan of the direct-current trans-regional interconnected largepower grid can be realized, multiple scheduling targets can be considered, and the method is also suitable for a scheduling mode of unified scheduling and hierarchical management in China.

Description

Technical field [0001] The present invention relates to the field of grid optimization operation and dispatch planning, in particular to a decomposition and coordination calculation method for a multi-objective power generation plan of a DC cross-region interconnected power grid. Background technique [0002] The reverse distribution of resources and demand makes my country's power grids show obvious characteristics of the transmitting and receiving ends. The construction of inter-regional DC links solves the difficulty of long-distance power transmission, but it also deepens the coupling between the transmitting and receiving ends and the integration of regulation and operation. Taking into account the influence of various factors such as geographical, economic, and policy between the transmitting and receiving power grids, it is usually difficult to use an integrated method to calculate the entire grid transmission plan. The conventional approach is for the upper-level grid mod...

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Problems solved by technology

However, this method can obtain the global optimal solution while ensuring the privacy of each partition information, but it can only be applied to the single-objective situation and cannot deal with multi-objective problems.

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