An equivalent simulation module of a wind farm, an AC/DC locomotive and its power supply system

Abstract

The invention relates to a wind power plant equivalent simulation module, an AC / DC locomotive and a power supply system of the AC / DC locomotive. The AC / DC locomotive comprises a wind speed simulation module, a wind energy collection and drive system simulation module, the wind power plant equivalent simulation module with a doubly-fed wind generator as a main body, a control system simulation module, a traction substation simulation module, a traction power supply line simulation module, an AC / DC electric locomotive main circuit simulation module and an AC / DC electric locomotive rotating speed and current double-closed-loop direct-current speed control system. In this way, the wind power plant equivalent simulation module, the AC / DC locomotive and the power supply system of the AC / DC locomotive have the advantages that the model demand of a load characteristic study on the AC / DC locomotive is met, the defect that dynamic response simulation conducted on a wind power plant under the condition of complex loads through traditional software is deficient is overcome, and an effective tool is provided for solving electric energy quality problems related to loads in an electrified railway and corresponding problems of the wind power plant under the condition of complex loads. By means of simulation, a reference basis is provided for improving the power supply reliability of a power grid under the condition of complex loads.

Description

technical field [0001] The invention relates to an equivalent simulation module, an AC locomotive and a power supply system thereof, in particular to an equivalent simulation module of a wind farm, an AC locomotive and a power supply system thereof. Background technique [0002] The rapid development of electrified railways and the large-scale access to new energy sources such as wind power have introduced a large number of complex and random loads and power sources including power electronic devices represented by rectifiers and inverters to the power grid. Numerous sources of interference. Compared with other devices such as generators and motors, power electronic devices such as rectifiers and inverters have higher requirements on power quality, and they can withstand a smaller voltage range and lower overload capacity. The models established by traditional simulation software based on conventional electrical components are not enough to accurately simulate the dynamic b...

AI Technical Summary

Problems solved by technology

[0003] The present invention mainly solves the technical problems existing in the prior art; it provides a model that satisfies the demand for the research on the load characteristics of the AC / DC locomotive, and overcomes the shortcomings of traditional software for insufficient simulation of the dynamic response of the wind farm under complex load conditions. Provides an effective tool for solving power quality problems related to electric railway loads and wind farms under complex load conditions

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