Enhancement of power transmission system performance

The performance of the DSTATCOM depends on the control algorithm i.e. the extraction of the current components. So, for this, there are various control algorithms for the control of DSTATCOM block depending on various theories and strategies like phase shift control, instantaneous PQ theory, synchronous frame theory, Adaline based theory. Each of the algorithms specified have their own merits and demerits. This paper focuses on power quality improvement of small isolated alternator feeding a three phase three wire distribution system with a linear load. Voltage regulation and rectification of linear loads, efficiency of power such as power factor correction are studied and implemented with the help of DSTATCOM. And also various control algorithms specified are reviewed and analyzed through digital simulations. The models are developed and simulated in MATLAB using simulink and power system block set (PSB) tool boxes. It is observed that DSTATCOM is effective in compensating reactive power and improving the power quality of distribution systems.