To measure the power high quality technical indicators embody voltage fluctuation, frequency fluctuation, harmonics and unbalanced. Energy provide quality is affected by many elements. As the change of load, using of huge nonlinear load harmonics, the influence of power factor compensation capacitance input and lower, lightning and man-made fault, public services. Such as electric motors and the elevator operation will affect the power high quality ,it scale back the quality of power provide.
Computer Science Cover Letter
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