Physical test study on power system voltage collapse

In order to test and verify the phenomena of power system voltage collapse, this article chooses a single-load infinite-bus single-machine as sample systems based on PS-5G carry out stability physical tests, an induction motor adjustable resistor are used constitute comprehensive load. The results show that in system, with decrease resistance gradually, load active is gradually increasing bus decreasing; slight adjustment for can cause collapse when has locked-rotor. locked-rotor lead occurrence reactive limit-induced bifurcation, it causes terminal synchronous generator have instantaneous collapse. conducive comprehend mechanisms instability systems.