The invention discloses a PSCAD (Power
System Computer Aided Design)-based electric complex
torque coefficient scanning method, and belongs to the field of stable control of power systems. The method comprises the following steps: (1) loading an electric complex
torque coefficient scanning module onto electromagnetic transient
software; (2) inputting an
electric parameter and a scanning parameter; (3) generating small-amplitude turbulence according to the scanning frequency, and applying the turbulence to the mechanical torque of a rotor specific to the power
system which enters a
stable state already; (4) extracting an
electromagnetic torque signal of a generator and the angular speed response of the rotor after the
system enters the
stable state once again, and calculating an electric complex
torque coefficient; (5) judging whether the scanning frequency surpasses a
cut-off frequency or not, if the scanning frequency does not surpass the
cut-off frequency, adding a scanning step length on the basis of the frequency, returning to the step (3), and scanning the electric complex torque coefficient of a next frequency point; if the scanning frequency surpasses the
cut-off frequency, stopping calculation and finishing scanning. By adopting the PSCAD-based electric complex torque coefficient scanning method, automatic scanning of an electric complex torque coefficient method on
time domain simulation software is realized, a
simulation method is quick, and the cost is low.