In this paper, the nearly instantaneous response of the seriesconnected VSC-based FACTS controllers when used to limit possible fault currents in a compensated line, will be presented. The effectiveness of both FACTS controllers (SSSC and UPFC) towards this system condition was investigated exploring the series voltage effect upon the line. Moreover, it will be shown that the UPFC shunt convert...

Villagers, particularly the women, have once again come forward to launch another novel movement to save Uttarakhand forests and the environment. Established in July 1995, the Rakshasutra (Safety thread) movement struggled to stop the operations of Uttar Pradesh Forest Corporation (UPFC). Through the help of the Himalayan Environmental Education Society volunteers, women consolidated and unit...

هدف: هدف پژوهش بررسی ویژگی­‌های روانسنجی نسخه فارسی پرسشنامه تحقق انگیزه­‌های آشکار و پیش­بینی بهزیستی بر اساس انگیزه­های بود. روش کار: همبستگی جامعه آماری کلیه زنان مردان بالای 18 سال ایرانی در 1399 بودند. 595 نفر با نمونه­‌گیری دسترس به 99 سؤالی انگیزه‌­های 24 خرده مقیاس نیازهای اساسی گلاسر، سؤالات جمعیت ­شناختی پاسخ­دادند. یافته­‌ها: روایی صوری محتوایی توسط متخصصان روان­شناسی، تأیید شد. پایا...

This paper deals with the, AC power flow approximation has been used to calculate new real Power Transmission Congestion Distribution Factors (PTCDFs), considering the presence of an UPFC. These factors have been utilized to form the single and multiple zones for the congestion management. The UPFC has been optimally placed in the system based on the factors, called as Line Loading Distribution...

This paper presents the design of Unified Power Flow Controller (UPFC) based damping controller for damping of power system low frequency oscillations under dynamic uncertainty. Detailed investigation have been carried out by previous researchers considering the four alternatives of UPFC based damping controller namely modulating index of series inverter (mse), modulating index of shunt inverte...

In this paper, the use of the supplementary controller of a unified power flow controller (UPFC) to damp low frequency oscillations in a weakly connected system is investigated. The potential of the UPFC supplementary controllers to enhance the dynamic stability is evaluated by measuring the electromechanical (EM) controllability through singular value decomposition (SVD) analysis. Individual d...

This paper proposes a Direct Matrix Converter operating as a Unified Power Flow Controller (DMC-UPFC) with an advanced control method for UPFC, based on the Lyapunov direct method, presenting good results in power quality assessment. This control method is used for real-time calculation of the appropriate matrix switching state, determining which switching state should be applied in the followi...

Wind power is the fastest growing renewable source of electrical energy hence it has become necessary to address problems associated with maintaining a stable electric power system. The wind generated power is always fluctuating due to its time varying nature and causing stability problem. Unified Power Flow Controller (UPFC) is used to control the power flow in the transmission systems by cont...

There are many problems arising in the electrical networks. In that, voltage fluctuation and power loss reduction becomes a major drawback in the electrical power supply system. Hence it is necessary to enhance the system power flow by placing suitable facts devices. The placement of FACTS devices in suitable location can lead to control the flow of current and maintain bus voltages in desired ...