A method for decomposing and coordinating calculation of multi-objective power generation plan in DC interregional interconnection grid

Abstract

The invention discloses a multi-objective power generation plan decomposition and coordination calculation method for a DC cross-region interconnected power grid. First, a cross-region interconnected large power grid with engineering constraints of DC operation is constructed with the minimum power generation cost, minimum carbon emission and minimum pollutant emission as the goals. Then, the above multi-objective optimization model is transformed into a series of centralized single-objective optimization sub-problems with different preferences by using the normal boundary intersection method; The power grid decomposition coordination model of the sending end and the receiving end of the multiplier method realizes the distributed solution of the multi-objective day-ahead generation and transmission plan. The method can realize the distributed solution of the multi-objective day-ahead generation and transmission plan of the DC cross-regional interconnected large power grid, which can not only take into account multiple dispatching objectives, but also be suitable for the dispatching mode of unified dispatching and hierarchical management in my country.

Description

technical field [0001] The invention relates to the field of power grid optimization operation and scheduling planning, in particular to a method for decomposing and coordinating calculation of multi-objective power generation plan of DC inter-regional interconnection grid. Background technique [0002] The reverse distribution of resources and demand makes my country's power grid present obvious characteristics of the sending and receiving end. The construction of inter-regional DC lines has solved the difficulty of long-distance transmission of electric energy, but it has also deepened the coupling degree of the sending and receiving end power grid, and significantly strengthened the integration of regulation and operation. Considering the influence of various factors such as geography, economy, and policy between the sending and receiving end power grids, it is usually difficult to use an integrated method to calculate the power generation and transmission plan of the enti...

AI Technical Summary

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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