Simulation model simplification structure of permanent magnetic direct drive wind generation set and based on power system computer aided design (PSCAD)

Abstract

A simulation model simplification structure of a permanent magnetic direct drive wind generation set and based on the power system computer aided design (PSCAD) belongs to the technical field of wind generation sets. A simplification model comprises a wind power machine module, a permanent magnetic direct drive generator module, a machine side controlled voltage source module, a control module of the machine side controlled voltage source module, a net side controlled voltage source module, a control module of the net side controlled voltage source module, a net side filter inductor and an infinite power grid. The wind power machine module is connected with the permanent magnetic direct drive generator module through a transmission chain, the permanent magnetic direct drive generator module is connected with the machine side controlled voltage source module, and the net side controlled voltage source module is connected with the infinite power grid. The simulation model simplification structure has the advantages of being suitable for simplifying a simulation model of the permanent magnetic direct drive wind generation set in the PSCAD and improving simulation speed and efficiency when wind power plant equivalence is conducted in the PSCAD.

Description

technical field [0001] The invention belongs to the technical field of wind turbines, and in particular provides a simplified structure of a simulation model of a permanent magnet direct drive wind turbine based on PSCAD, which is suitable for the simplification of the simulation model of a permanent magnet direct drive wind turbine in PSCAD, and for performing wind farm simulation in PSCAD. Increases the speed and efficiency of simulations when equalizing. Background technique [0002] At present, when building a permanent magnet direct drive wind turbine simulation model in PSCAD, the circuit is mainly composed of the main circuit part, the control circuit part and the converter pulse generation part, and the converter pulse generation part is determined by the modulation mode as PWM modulation mode or SVPWM modulation mode. No matter which method is used, there will be a higher frequency pulse signal in the model, so in order to keep the simulation waveform from being di...

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Problems solved by technology

[0005] It takes a long time to do the grid-connected simulation with the above-mentioned small step size, takes up a lot of memory, and has a large amount of calculation. The network simulation speed is very slow and requires high computer memory, and sometimes the simulation cannot be carried out due to too many unit models

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