Method for simulating harmonic waves injected into power grid by high-speed rail electric locomotive

• Main Authors: GAO XIANG, CHEN DAHAO
• Format: Patent
• Language: Chinese; English
• Published: 27.03.2020
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; SYSTEMS FOR STORING ELECTRIC ENERGY

The invention relates to a method for simulating harmonic waves injected into a power grid by a high-speed rail electric locomotive. The method comprises the following steps: 1, establishing a simulation circuit of the harmonic waves injected into the power grid by the high-speed rail electric locomotive in PSCAD; 2, equivalently replacing a power grid in the simulation circuit with an ideal voltage source; 3, equivalently replacing a traction inverter and a traction motor in the simulation circuit with equivalent resistance; 4, operating the simulation circuit, and analyzing the power grid side harmonic wave through fast Fourier transform (FFT); and 5, obtaining the relationship between each harmonic content rate and the harmonic order, and the relationship between the harmonic content rate and the carrier ratio. Compared with the prior art, the method has the advantages of sufficient harmonic data, clear simulation result rule and the like. 本发明涉及一种高铁电力机车注入电网谐波的仿真方法，包括以下步骤：步骤1：在PSCAD中搭建高铁电力机车注入电网谐波的仿真电路；步骤2：