Characteristic Analysis And Physical Experiment Study Of Voltage Stability In The Power System

The topic voltage stability of electric power system is a hot topic that was researched by some experts in the work near twenty years. The cause is recognized to the theory, and perfect analysis way and controlling measure is set up. Different attitude to the cause of voltage stability is shown by different expert focusing on different studying way. The result of explain is different to the same problem, studying the problem of voltage stability is a challenging and attractive zone because of adopting different research theory and different design.Voltage instability and voltage collapse are physical topic, the explanation could be got from theory of circuit and appeared it's quality from experiment. Circuit and voltage characteristics of power flow in electric power system is turned out by the geometric analysis of simple alternative circuit equations, by the characteristics and effectuation of different load in electric power system, the system would be stable while equation of power flow having it's solution, the voltage of system would collapse while equation of power flow having no it's solution, the system would be critical in the situation while equation of power flow having only one solution ,the explanation is got.Arranging the experiment is another important part work in this issue, the system model is tested in the condition of laboratory. The result of load characteristic testing is proved. The adjusting function of voltage of the load with power style is the worst in our research, and it would easily lead to the voltage collapse; The adjusting function of voltage of the load with impedance style is the best in our research, and it would not lead to the voltage collapse; The testing of load transition proved that one of transmit electricity circuit leaving running would lead to the...