چكيده به لاتين
Today, due to the multiple loads on the grid, issues such as power quality, especially reactive and harmonic power, are a serious threat to the security of correct and optimal operation of power transmission lines. With the development and development of electronic power converters and the increasing need for these converters, the presence of these converters is increasingly felt in the power system. One of the most widely used electronic power converters in the power system are AC / DC converters that have nonlinear behavior. The use of these converters causes many problems in terms of network power quality. These include harmonic currents in the network, non-sinusoidal voltage, disturbance to other loads in the network, and in many cases inadequate power factor.
One way to improve the quality of power is to use a proper filter. Using static synchronous compensator (STATCOM) is one of the practical tools for solving these problems. In this way, the inverter connected to the grid can be used as an active filter and the system can achieve the purposes of real and imaginary power injection. It was also achieved by the active filter function of the grid power factor, load balancing, reactive power compensation, elimination of load-induced harmonics, and thus the sinusoidal purification of the three-phase currents drawn from the network.
Proper control methods help achieve these goals. In this research the theory of instantaneous power theory is used to generate reference signals. Using hysteresis switching and space vector modulation techniques have been attempted to generate switch signals. Finally, the results of these two switching methods are compared to compensate for network power quality issues.
