Power grid evolution simulation method applicable to large-scale new energy access

Abstract

Disclosed is a power grid evolution simulation method applicable to large-scale new energy access. The power grid evolution simulation method comprises the following steps of 1, reading in system loadand energy prediction information; 2, determining whether voltage level upgrading is needed or not according to the substation density of the same voltage level in a region; 3, solving a power supplyplanning problem, and determining the number and expected output of newly built power plants; and 4, solving a power transmission network planning problem and determining a construction scheme of a circuit. By taking influence of the large-scale new energy access and new technological application to the power grid in the future into consideration, electric power, electric quantity, peak shaving and environmental protection constraints are introduced to the electric power system evolution model by drawing lessons from a power grid planning thought and by taking the minimum construction cost asan optimization target; a plurality of cutting-edge technology-based simplified models are established from the aspect of operation of the electric power system; finally, a solving method for the evolution model is proposed by combination with a heuristic rule and a plant growth simulation algorithm; and therefore, quantitative decision basis can be provided for an energy policy and an electric power strategy by adoption of the power grid evolution simulation method.

Description

technical field [0001] The invention relates to the technical field of power system grid evolution, in particular to a grid evolution simulation method suitable for large-scale access to new energy sources. Background technique [0002] Under the background of saving resources, protecting the environment and reducing carbon emissions in today's society, the development of clean energy has become a hot topic in the energy field. The promulgation of relevant national policies also means that new energy will occupy an extremely important position in my country's future power grid, and the large-scale access of new energy has also brought huge challenges to the development of the power grid. The large-scale access to new energy sources will break the existing system where power sources and loads are relatively close together, making the interconnection of power grids more common in the future, and the resulting network scale will be even larger. However, new energy itself is fa...

AI Technical Summary

Problems solved by technology

In addition, some scholars have modeled and analyzed the characteristics of the three-generation power grid, and obtained the evolution results of the power grid in the next decade or so. However, most of them lack the consideration of new technologies such as environmental protection requirements, new energy access, and energy storage. Also does not optimize the cost of power system evolution

[0004] In addition, a major problem in the evolution of power grids lies in the huge calculation scale. As mixed integer linear programming, power planning and power grid planning have great solution complexity.

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