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Dust accumulation on the Photovoltaic (PV) modules, or soiling, is one of the conditions that negatively affect the performance of the modules by obstructing and reducing the incident sunlight. The process of building up the soiling layer on the surface of the PV modules is heavily influenced by the climatological parameters. In this study, the soiling loss of 20° tilted PV modules, mounted on a mock...
Given the variability of the demand on energy (electricity) from end consumers and the variability of supply from the renewable energy sources, the smart grid can suffer from the gap caused by the mismatch of these two variables. The energy storage techniques are required in order to minimize the impact of the mismatch between the supply and the demand. However, the selection of the storage technique...
Solar Photovoltaic (PV) and Wind power plants are becoming increasingly cost competitive when compared with conventional thermal power plants and in the not far future may set the ceiling price of electricity in many markets. The Kingdom of Saudi Arabia (KSA) is internationally known for its hydrocarbon reserves but is less recognized for its renewable energy resources, especially wind energy. These...
In modern era the utilization of battery empowered systems is growing exponentially. In the goal to achieve an optimal system performance, the employment of a PMS (Power Management System) is necessary. The recent sophistications in the area of PMSs are demanding more and more processing resources. Reducing the PMS power consumption is becoming one of the most difficult industrial challenges. Most...
In this paper, a new approach has been proposed to determinant the optimum transmission plan and selection criteria of high potential onshore wind farm using multi-terminal HVDC network. The technique tests different configuration of the system that includes selecting of wind farms location, MT-HVDC network to transmit the wind energy and compare their corresponding power transmission, harvested energy...
This paper primarily focuses on Small Signal Stability Analysis of power system integrated with Wind Generation. Power System Stabilizer (PSS) is used with Wind Generation to investigate its effectiveness in damping out Local Area (Plant Mode) Oscillations. The effects are analyzed on 9-Bus Test System using established modeling and simulation techniques. Using SMIB based generator model, AVR lag...
There are many problems posed by conventional energy such as oil supply insecurity, extreme pollution, and climate change risks due to fossil fuel burning. Therefore, looking for alternative non-conventional energy resources has become an urgent matter. One of the most popular non-conventional power resources are solar energy power plants which convert the solar energy or solar heat to electricity...
The National Guard facility located in AlAhsa whose rating is 5 MVA suffers from repetitive power service interruption, especially during peak times. Furthermore, the facility that includes utility, residential, and commercial is expected to go through so huge expansion that the existing power system cannot meet the new power demand. Thus, either the entire system has to be upgraded, or new system...
Challenges in development of renewable energies and mainly in its large scale integration into power system require a road map consist to define new configuration, operations, requirements, equipment. Actually many countries have not yet started to install renewable energies and others begins to integrate some Megawatts of renewable energies but also some countries are very developed in wind power...
This paper explains the need of controller to detect the fast separation of phase angles among the critical areas automatically using synchrophasors and proceed to mitigate the instability by suitable switching action. Power systems are large interconnected nonlinear systems where system wide instabilities or collapses do occur over time. In that case, the system breaks up into many islands resulting...
The unipolar sinusoidal pulse width modulation (SPWM) full-bridge (FB) transformerless photovoltaic (PV) inverter can achieve high efficiency by using super-junction MOSFETs together with silicon carbide (SiC) diodes. However, the MOSFETs are limited to use in transformerless PV inverter due to the low reverse recovery characteristics of the body diode. In this paper, a new transformerless PV inverter...
Due to the economic and environmental reasons, Saudi Arabia plans to deploy large scale grid-connected distributed generators (DGs) such as photovoltaic (PV) and wind energy systems. Detailed analyses must be carried out to study the impact of such systems on the dynamics and operational characteristics of the existing network. Main focus of this work is to investigate the improvement in voltage stability...
In this paper, a population of substation components is considered for preventive maintenance prior to which they were only repaired upon failure. Monte Carlo simulation technique is used to study and compare three different operation and maintenance scenarios. In the first scenario it is assumed that no maintenance takes places and components are repaired upon failure. In the second scenario it is...
Traditionally control of electrical power networks has been a centralized, top down system approach. Whilst the wider span of control offered by the centralised approach provides the Quality of Service, and the full situational awareness to make informed decisions to manage load flows, it is less responsive as the system grows and becomes more complicated. With the introduction of renewable energy...
The current energy trend is the hybrid system projection in which renewable sources and storage systems provide a high percentage of energy needs, leaving the use of conventional system for emergency cases. Hence, microgrids represent a viable solution for the electricity demands in isolated or non-electrified areas. Only diesel generators were previously used in this kind of applications. Their efficiency...
With the advancements in the variable speed system design and control of wind energy systems, the power capturing capability and controller complexity of these systems are increasing in parallel. Doubly fed induction generators (DFIGs) with a partial-scale size back-to-back converter set are among the promising technologies in wind power generation schemes. This paper discusses the controller performance...
Advancement in power electronics, energy storage, control, and renewable energy sources has lead the use of integrated renewable energy sources in isolated Microgrids (MG). Also, the use of integrated renewable energy sources are becoming technically applicable, economical more feasible, and environmentally friendly than conventional sources. As a result, electrification of rural villages using renewable...
Nowadays, in Egypt the power electricity demand is increasing continuously and rampant power cuts are a norm, and the scheduled outages can be as high as 8 hours a day in some parts of the country. During the outages, industries, commercial establishments and residential consumers tend to use diesel generators, which not only expensive, but also leads to pollution. One of the main tasks for The Egyptian...
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