Author : G. Poorna 1
Date of Publication :14th December 2017
Abstract: In this paper, we are implementing a concept of the photovoltaic (PV) solar farm inverter as STATCOM, called PV- STATCOM using fuzzy controller is proposed in this paper, for improving stable power transfer limits of the interconnected transmission system. During daytime, the inverter capacity left after real power production is used. During night time it utilizes the entire solar farm inverter capacity. And during various operating conditions system has different real and reactive power flow which is required to be controlled to enhance the system power transfer capability, transient stability and reduce the losses in the system. For this purpose, the recent trend is the use of FACTS control devices. Here we are using the fuzzy controller when compared to other controllers for the better performance. Therefore, the fuzzy controller is the most suitable for the human decision-making mechanism, providing the operation of an electronic system with decisions of experts. The main aim of the LCL filter is to reduce high-order harmonics on the output side; however poor design may cause a distortion increase. Power transfer increases are also demonstrated in the same power system for 1) two solar farms operating as PV-STATCOMs and 2) a solar farm as PV- STATCOM and an inverter-based wind farm with similar STATCOM controls. By using the fuzzy controller for a nonlinear system allows for a reduction of uncertain effects in the system control and improves the efficiency. By using the simulation results we can analyze the proposed method.
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