The Influence Of The Power System Voltage Stability Factor Analysis And Research

Along with the load center whole load level unceasing growth, the long-distance range, the large capacity electric transmission increase unceasingly, the entire electrical power system day by day is also prominent about the voltage stable question. Recently in for several year entire worldwide scales has occurred have been very many the voltage jitter the significant event, and in the multitudinous events were many the voltage jitter event all to cause the entire electrical power system collapse, created the very many local big piece area the power cut accident, for the electric power department, people and even other used electricity the profession all to create the huge economic loss. Therefore, the deep discussion voltage stability problem, the research produces the voltage jitter mechanism and the entire developing process, proposed the corresponding measure can effective prevent the voltage jitter and the voltage collapse, these measures have the extremely important theory significance and the practical significance.This thesis has analyzed likely the synchronous generator, the static idle work compensator, the capacitor and so on the very many idle work power source characteristic. As well as asynchronous motor load idle work-voltage characteristic. In addition has also analyzed in the transmission reactive power aspect transmission line, the transformer function. Research about small perturbation voltage stability and big disturbing voltage stable influence factor. Has established in the electrical power system each kind of primary device mathematical model, and uses in MATLAB simulation tool simulink to carry on the dynamic time domain simulation. The contrast simulation result, analyzes each kind of idle work power source the compensation capacity, the speed of response as well as the different form disturbance, including transmission line length, load inherent characteristic to voltage stable influence and so on. This article separately from affected the power source, the load and the wire table structure this tripartite has made the detailed elaboration facing the voltage stable factor. Finally proposed some can enhance the electrical power system voltage stable substantive strategy, has the extremely important reference value to the entire electrical power system plan and the movement.