Method for positioning active load voltage sag source
A technology of voltage sag source and voltage sag, which is applied in the field of power system and can solve the problems of system characteristic influence and load inclusion source not considered
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[0023] The preferred embodiments will be described in detail below in conjunction with the description. It should be emphasized that the following description is only exemplary and not intended to limit the scope of the invention and its application.
[0024] The invention provides a voltage sag source location method in which the load includes the source. The simulation model is set: the total length of the transmission line is 200 km, and the distance between the monitoring device M and the load power source is 4 km. Set a three-phase short-circuit fault point in the upstream of the system, the fault is 120km away from the system power supply; the fault time is 0.5-1s; the fault resistance is 1Ω. The specific implementation of this method is as follows:
[0025] 1. Sampling and monitoring data for dynamic identification of system parameters
[0026] Extract the voltage and current waveforms before and during the fault within 0-1s, take 128 points for each half cycle, bring...
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