This study starts from the proof of Low Frequency Oscillation (LFO) and then points out that there are many ways to study the LFO including its rejection measures. Also in this study one control system is planned in order to regulate voltage at common coupling point (PCC) in where STATCOM is installed. This research present a single-machine infinite-bus system with one static synchronous compen...

Low-Frequency Oscillations (LFO) in the range of 7-9 Hz, or theta rhythm, has been recorded in rodents ambulating in the real world. However, intra-hippocampus EEG recordings during virtual navigation in humans have consistently reported LFO that appear to predominate around 3-4 Hz. Here we report clear evidence of 7-9 Hz rhythmicity in raw intra-hippocampus EEG traces during real as well as vi...

–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 ...

During the late 20th century, imprisonment rates in United States saw unprecedented growth, leading correctional systems across country to face widespread overcrowding and underfunding. Subsequently, policy makers sought out alternatives incarceration for certain categories of offenses. Community supervision, such as probation, emerged a popular solution both reduce prison jail populations well...

The low-frequency oscillation (LFO) problem of photovoltaic (PV) grid-connected systems has been a critical concern for safe operation, whereas the impact dc-side components PV plants are always ignored and single-stage plant is used. This paper performs comprehensive analysis LFOs in two-stage system. complete small-signal model system built. On this basis, LFO modes high-frequency (HFO) calcu...

Optimal decision-making requires balancing fast but error-prone and more accurate but slower decisions through adjustments of decision thresholds. Here, we demonstrate two distinct correlates of such speed-accuracy adjustments by recording subthalamic nucleus (STN) activity and electroencephalography in 11 Parkinson's disease patients during a perceptual decision-making task; STN low-frequency ...

In this paper, the Unified Power Flow Controller (UPFC) is enhanced with a Chaotic Particle Swarm Optimization (CPSO) Damping Controller in order to mitigate the Low Frequency Oscillations (LFO) in a Single Machine Infinite Bus (SMIB) power system. The designed damping controller is an optimized lead-lag controller, which extracts the speed deviation of the generator rotor and generates the out...

Dynamic interactions between AC railway electrification systems and traction unit power converters can result in low frequency oscillation (LFO) of the contact-line voltage amplitude, which lead to a outage substation shutdown train traffic. Several system parameters influence stability system, including length such as transformer leakage inductance, DC-link capacitance, control bandwidths sync...

Using a dynamic stochastic occupational choice model with heterogeneous firms, this paper studies sweeping business tax-cut program enacted in the State of Kansas during 2012–2016. This finds that “The Tax Experiment” distorts entrepreneurial legal form organization (LFO), and encourages adoption pass-through status over C-corporate form. Because businesses face more constraints on access-to-ca...

Piezoelectrics are key functional materials in actuator and sensor applications. Current technology exploits lead-based materials displaying a morphotropic phase boundary (MPB) between two ferroelectric solid solutions of different symmetries and polarization directions. This is best exemplified by the PbZr1 xTixO3 (PZT) perovskite system where the distortions driving the piezo response are pro...