AC/DC hybrid distribution system grid structure optimization configuration method

Abstract

The invention discloses an AC / DC hybrid distribution system grid structure optimization configuration method, which comprises the following steps: S1, constructing a AC / DC hybrid system grid structuredouble-layer optimization model; S2, constructing a probability model of AC and DC load demand, charging pile charging demand, distributed photovoltaic and fan output; 3, generate a feasible configuration scheme of that space truss structure; S4, setting the reference operation mode of the power electronic transformer; S5, Monte Carlo simulation is used to generate the optimal power flow sub-optimization problem under the running scenario until the stop condition of Monte Carlo simulation is satisfied; 6, according to that current sub-optimization termination condition, if it is satisfied, entering step S7, if it is not satisfied, modifying the port control mode of the power electronic transform, and returning to step S5; S7, calculating the total cost of investment construction and operation of the current scheme to check the main optimization objective, outputting a description matrix if the objective requirement is met, and updating the grid configuration scheme if the objective requirement is not met, and returning to step S4.

Description

technical field [0001] The invention belongs to the technical field of electric power system planning and investment decision-making optimization, and in particular relates to a method for optimizing configuration of grid structure of an AC / DC hybrid power distribution system. Background technique [0002] In recent years, the rapid growth of new loads such as renewable energy, energy storage systems, and electric vehicles has increased the demand for smart energy management in distribution networks: on the one hand, more and more distributed renewable energy (Distributed Energy Resource, DER) Started to connect to the system through the distribution network or micro-grid; on the other hand, new elements with strong user interaction such as active response loads and electric vehicles are also continuously connected to the distribution network. The traditional AC power distribution system is due to the topology and Due to the limitation of control methods, it is impossible to...

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Problems solved by technology

[0004] The purpose of the present invention is to address the above-mentioned deficiencies in the prior art, and provide a method for optimally configuring the grid structure of an AC / DC hybrid power distribution system, so as to solve the problem of the application of existing power electronic devices and the massive access of a large number of distributed renewable energy sources Issues that will change the characteristics of the system

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