Аналіз динамічних помилок розподільних статком, що зумовлені неточністю формування задавальних струмів

Abstract

В статті проаналізовано динамічні помилки симетрування навантажень та фільтрування вищих гармонік за допомогою СТАТКОМ, що зумовлені неточністю формування задавальних струмів.

In the article the algorithm of control of static synchronous compensators is analysed which is based on the theory of instantaneous capacities on dynamic errors. The structural scheme of control systems based on the theory of instantaneous power, the mathematical division of the transition mode for increasing and reducing the asymmetric active-inductive nonlinear load is shown, and the response of the device to this mode is shown. Dynamic errors of load balancing and filtering of higher harmonics are shown with the help of static synchronous compensators, which are caused by inaccuracy of the formation of presumptive currents. the analysis of dependencies, it follows that the current of the zero sequence is compensated for precisely, and the current of the reverse sequence of the fundamental harmonic, as well as the currents of the direct and reciprocal sequences of the higher harmonics, are compensated by errors which depend on the speed of the load change. Graphs of required consumption for small loads and generation at high loads of active and reactive power during load balancing and filtering of higher harmonics are shown. Dynamic errors of load balancing and filtering of higher harmonics by means of static synchronous compensators, in case of fixation of active and reactive capacities of static synchronous compensators, there are no errors.