The physical presence of other people can be stressful during performance tasks. The current study predicts that the physical presence of a single stranger will relate to physiological, selfreport and bodily indicators of perceived psychological stress as compared to a control condition with no experimenter physically present. Undergraduate students completed a series of questionnaires related ...

There are numerous examples of energy policy failures (Heffron et al., 2018) which now being systematically studied to provide for much-needed policy-relevant perspectives into key definitions, contexts, and theoretical frameworks analysis (Sokołowski Heffron, 2022). This paper will focus on one the prominent an failure; case Turkey – Austria natural gas pipeline project,1 also known as Nabucco...

Low Frequency Oscillations (LFO) occur in power systems because of lack of the damping torque in order to dominance to power system disturbances as an example of change in mechanical input power. In the recent past Power System Stabilizer (PSS) was used to damp LFO. FACTs devices, such as Unified Power Flow Controller (UPFC), can control power flow, reduce sub-synchronous resonance and increase...

This paper presents three new systematic approaches for computing coefficient matrices of the Heffron-Phillips multi-machine model (K1, …, K6). The amount of computations needed for conventional and three new approaches are compared by counting number of multiplications and divisions. The advantages of new approaches are: (1) their computation burdens are less than 73 percent of that of convent...

–Low frequency electromechanical oscillations are inevitable characteristics of power systems and they greatly affect the transmission line transfer capability and power system stability. Traditionally, power system stabilizers (PSS) are being used to damp these oscillations. Unified Power Flow Controller (UPFC) is a well-known FACTS device that can control power flow in transmission lines. It ...

Power system dynamic stability is one of key issues engineers face. Oscillations that regularly occur in the system, limit transmission capability network. The need to study power systems has been increasingly growing along with development and their grouping into large interconnections. focus this paper determining a synchronous generator, thus by applying general theory systems. Furthermore, ...