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In this paper, the rooftop Solar Photo Voltaic system emphasizes another of source of generation because these can be placed near to the load centers when compared with other non-conventional energy sources of generation. The rooftop Photovoltaic system that is grid connected will support on load and the off grid load with battery backup. The design system should follow that the total utilization...
This paper proposes a simple control technique of Unified Power Quality Conditioner with Distributed Generation (UPQCDG) for grid integration of solar photovoltaic (PV) system. In proposed technique shunt Active Power Filter (APF) of UPQCDG is controlled using Synchronous Reference Frame (SRF) theory and series APF is controlled using Unit Vector Template Generation (UVTG) method. Proposed control...
Optimal location of FACTS (Flexible AC Transmission System) has a significant impact on the improvement of power system stability. In this paper, proper placement of UPFC (Unified Power Flow Controller) is identified for voltage stability enhancement of IEEE 14-bus case study. Firstly, the critical zone of the system is determined by using numerical simulations based method. Secondly, comparative...
This paper presents an approach for solving the time-series simulation (TSS) for three-phase unbalanced distribution systems with voltage regulator control and photovoltaic (PV) generation. Efficient time-series simulation approach based on Lagrange polynomial approximation is developed to decrease the execution time and enhance the convergence characteristics. The formulation is developed to find...
This paper proposes a solution to voltage rise and/or sag in single-phase unbalanced distribution systems using photovoltaic (PV) arrays with reactive power capability. The PV is controlled to inject maximum power using Maximum Power Point Tracker (MPPT) to supply local loads when the solar power is available. The reactive power capability of the PV inverters regulates the bus voltages in transient...
In this paper, a novel active power filter (APF), which utilizes a highly reliable and efficient dual-buck inversion topology, is designed and integrated to a more electric aircraft (MEA) power grid to eliminate harmonics, correct power factor of supplies, and minimize the effect of unbalanced loads. The harmonic cancellation method, which provides a three-phase reference current in phase with the...
With the optimization of solar distributed generation (DG), different methods and models are implemented for system improvement. However, the stochastic nature and intermittency of solar power is often neglected. This paper presents an approach in finding the optimal site and size of a solar DG unit in the context of minimizing power loss and improving voltage profile. Uncertainties of the solar irradiance...
A stochastic performance analysis is a useful tool for an unbalance distribution feeder having voltage deepened load characteristics under deregulated environment. As the planning, smooth operation, and distributed generation (DG) integration aspects of an unbalance distribution feeder affected by the DG penetration level and may have a favorable or adverse impact on feeder performance. Therefore...
The integration of Distributed Generation (DG) in distribution system is growing very fast since last decade. The integration of DG is beneficial if DG of optimal size is placed at optimal site. The optimal placement of DG (OPDG) helps the distribution system planners to conquer maximum benefits of DG integration. Many techniques are reported in literature to solve OPDG problem. This paper presents...
The integration of the renewable power generation into the existing grid has been increased significantly and it is expected to be increased further in near future. The placement of renewable power generation units can be done accordance with reactive power loadability and it has to be taken care during the optimal placement. In this paper, a particle Swarm Optimization (PSO) based optimal placement...
Since the beginning of Traction supply system power losses, voltage fluctuation are the main concern, as there are large number of reactive elements in the system like transformer converters, motors etc. and also there are many locomotive loads connected to the traction line fed by subsystem at the same time may result in drop in voltage gives incompetent operation of system. So to overcome the fluctuation...
One of the major issues in the present electrical power system is power quality. The power quality problems may be of many types whether at source side or load side. Distributed Static Synchronous Compensator (D-STATCOM) is the most convenient device among all FACTS devices for all these power quality problems. This paper deals with performance evaluation with and without D-STATCOM for voltage swell...
The inclusion and modeling of uncertainty in conventional load flow is required with the enhancement in the penetration of intermittent generation. As a result, the multi-modality is there in output distribution functions. In this paper, a probabilistic load flow method is used with two wind generator models with multimodal loadings and a spline based reconstruction technique is introduced for the...
In this article, Power generation system model includes a turbine model of wind system, PMSG model, and a Simulink model of drive train. The generated power through the wind power plant is fed to three phase linear and non-linear load. The power electronics based shunt connected custom power devices are used to suppress the power quality problems at constant speed turbine. The objective of this paper...
All Solar Farms contain inverter as an essential part of it to convert DC power generated from PV (photo voltaic) modules into AC power. This paper presents a strategy of PV solar farm inverter control as a dynamic reactive power compensator- static synchronous compensator (STATCOM) when large Wind Farm is connected to a feeder and also load at the feeder end changes significantly. Using this control...
This paper proposes a non-linear control strategy to curb for the non-linearities and parameter uncertainties for a grid connected system. Since the conventional techniques performance rely highly on the tuned controller gains prior to grid impedance, its performance deteriorates over time. To incorporate these non-linearities, an adaptive backstepping control strategy has been used subjecting to...
This paper concentrates on the control of power flow in single stage photovoltaic energy conversion system. The conversion structure has a twofold requirement that consists in ensuring that the current injected to both load and grid obeys to the grid connection standards and sets the DC bus voltage similar to the reference voltage given by the MPPT algorithm. The advanced functions that can be added...
This paper demonstrates on the development of weak bus identification method using novel reactive power tracing index for determination and selection on appropriate buses for load shedding purpose. Power tracing principles using downstream looking algorithm is utilized for the development of a novel reactive power tracing index known as LQP_LT. The results obtained from the weak bus identification...
This paper presents an active power filter with direct output voltage control function of single-phase AC-DC converter. This configuration is capable to improve power-factor and also to reduce total harmonic distortion (THD) of line current. Apart of improving power quality of line current waveform, this approach allows output DC voltage control without any additional regulation circuits to regulate...
Due to the wide extension of power electronics equipment in modern electrical systems, the increase of the harmonics disturbance in the alternating currents has became a major concern due to the adverse effects on all equipments. The equipment will develop harmonic pollution source of the system, which generate many disturbances, and interrupt the optimal operation of electrical equipments. These...
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