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Analysis of power system overtone and overtone tidal current to calculate
First, introduction an ideal electrical power system is by the sole constant frequency and the stipulation peak-to-peak value regulated voltage power supply. But in fact, as a result of the recent years along with science's and technology's unceasing development, the high efficiency traded the class equipment and the modulator use, high in the electrical power system presses the nonlinear element which the direct current transmission the application, the massive misalignment load's appearance as well as the power supply system itself existed and so on to cause in the system's voltage waveform distortion to be getting more and more serious, has caused the very big harm to the electrical power system, for example: Causes in the power supply system the part to lose increases, reduces current collector's service life, to disturb munication system and so on. Serious when even can also cause equipment the damage, automatic control malfunction, relay protection misoperation, thus creates the power cut accident and so on and other questions. So-called " the friend knows other, is undefeated in many battles ", therefore, must realize to the work prehensive program of public order, must make clear the overtone origin and the work in under the each different movement way the overtone tidal current distributed