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A PV Solar Farm as PV-Statcom for Reactive Power Compensation and for Enhancement of Grid Power Transmission Limits

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Document pages: 9 pages

Abstract: Power system performance may be referred as the performance study of power system during normal operating condition, fault condition and after removal of fault. A novel concept of utilizing a photovoltaic (PV) solar farm inverter as STATCOM, called PV-STATCOM using dynamic 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 different 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, recent trend is the use of FACTS control devices. The PV-STATCOM improves the stable transmission limits substantially in the night and in the day even while generating large amounts of real power. The main function of the LCL filter is to reduce high-order harmonics on the output side; however poor design may cause a distortion increase. Here we are using the dynamic controller compared to other controllers i.e. the dynamic controller is the most suitable for the human decision-making mechanism, providing the operation of an electronic system with decisions of experts. Power transfer increases are also demonstrated in the same power system for Two solar farms operating as PV-STATCOMs and, Single solar farm as PV-STATCOM and an inverter-based wind farm with similar STATCOM controls.

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