Mohammed Albadi

Sultan Qaboos University | SQU · Department of Electrical and Computer Engineering

Abstract Dispatchable renewable generation is essential for 100\% renewables power system. It is in the interest of both power system operators and customers since it reduces the need for flexibility and reserve. To this end, battery energy storage systems (BESS) are proposed for integration in the renewable power plant. This paper presents the opt...

The importance of solar photovoltaic (PV) systems has grown significantly with the continuous development of the solar cells industry over the past years. However, studying the potential impacts of solar PV systems on the distribution network has recently become an important topic with high attention. This paper presents an overview of the potentia...

Harnessing wind energy is one of the fastest-growing areas in the energy industry. However, wind power still faces challenges, such as output intermittency due to its nature and output reduction as a result of the wake effect. Moreover, the current practice uses the available renewable energy resources as a fuel-saver simply to reduce fossil-fuel c...

For a decade, investments in solar photovoltaic (PV) systems have been increasing exponentially in the Middle East. Broadly speaking, these investments have been facing tremendous challenges due to the harsh weather in this particular part of the world. Dust accumulation is one the challenges that negatively affects the performance of solar PV syst...

Wind farm layout optimization (WFLO) is carried out in this study considering the wake effect, and cabling connections and losses. The wind farm micro-siting optimization problem is formulated with the aid of Jensen’s wake model. Cabling between the wind turbines and the point of common coupling (PCC) is an important aspect of the wind farm design...

This article presents a new invariant-set design for voltage regulation of islanded microgrids (MGs) composed of several distributed generators (DGs). The advantages of the proposed control are: (1) the control structure is decentralized, and (2) it tracks the reference inputs quickly and maintains robust stability against the MG’s load changes and...

Dispatchable renewable generation is essential for 100% renewables power system. It is in the interest of both power system operators and customers since it reduces the need for flexibility and reserve. To this end, battery energy storage systems (BESS) are proposed for integration in the renewable power plant. This paper presents the optimal dispat...

The evolutionary transition to smart grids and smart buildings holds a great promise for a cleaner, more efficient power; healthier air; and lower greenhouse gas emissions. This chapter opens with an introduction that provides an overview of conventional power grid and its evolution to smart grid. In section “Smart Grid Technologies”, the smart gri...

Intermittency of renewable generation entails a large amount of flexibility and spinning reserve to enable secure and stable operation of the power system. The additional imposed cost due to accommodating renewables jeopardizes the economic value of renewable energy projects. Dispatchable renewable generation can help reducing the need for flexibil...

Micro-siting, also known as Wind Farm Layout Optimization (WFLO), is useful in finding the optimal layout of wind turbines, enabling them to harvest the maximum amount of power. The wake effect that the turbines in wind farms produce on each other causes a reduction in wind velocity, thus altering the overall output power. The wake effect should be...

In this research, a simulation model is proposed to study the impact of consumer response rate on capacity and production planning. Different generation technologies such as base-load generation technologies and intermittent renewable energy technologies are considered. The simulation results show that the impact of DR depends on market price, the...

A novel optimization strategy is proposed to achieve a reliable hybrid plant of wind, solar, and battery (HWSPS). This strategy’s purpose is to reduce the power losses in a wind farm and at the same time reduce the fluctuations in the output of HWSPS generation. In addition, the proposed strategy is different from previous studies in that it does n...

Over the past decade, population growth and industry expansion in Oman have led to an increase in electricity demand of more than 240%. The main challenges of utilising renewable energy resources in Oman include high capital costs and their intermittent nature. Enhancing the integration of renewable energy sources from wind and solar into the conve...

The use of power system stabilizers (PSSs) to damp power system swing mode oscillations is of extreme practical importance. This manuscript presents an approach to the stabilization of a single machine infinite bus system (SMIB). The proposed control is based on the notch-filter approach to cancel the poles near to the imaginary axes. The approach...

Although solar photovoltaic (PV) systems are environmentally friendly, policy makers and power system operators have concerns regarding the high penetration of these systems due to potential impacts of solar power intermittency on power systems. Understanding the nature of this intermittency is important to make informed decisions regarding solar p...

This paper proposes a robust power system stabilizer(PSS) for a steam synchronous generator in Barka II power station. The PSS should be capable of damping small-disturbance oscillations (inherently existing in power systems due to e.g. load changes, lines switching...etc.) within a certain settling time for different load conditions. Also, the pro...

This article investigates the potential for reducing technical losses in the rural area network of Saih Al Khairat in Thumrait, Oman. Based on the available network data, a power flow model of the system under study is built and the system performance is studied. To reduce losses and improve the voltage profile, different candidate solutions are in...

This article investigates the potential for reducing technical losses in the rural area network of Saih Al Khairat in Thumrait, Oman. Based on the available network data, a power flow model of the system under study is built and the system performance is studied. To reduce losses and improve the voltage profile, different candidate solutions are in...

This article uses a Geographical Information System (GIS) platform to create an on-line monitoring system in order to display real-time operational data measured at different points of an electricity network. The network with all its assets will be displayed on a geographical map. This provides the electricity utilities with a tool for monitoring,...

This paper introduces a new technique to characterize the AC grids stability connected to Multi-Terminal high voltage Direct Current (MTDC) networks. The proposed method identifies the maximum active powers that converters can exchange with an AC network without losing the transient stability using trajectory sensitivity analysis. Therefore, the ge...

This paper investigates the possibility of constructing multi-microgrids by interlinking the rural area systems in the Al Wusta governorate of the Sultanate of Oman, which are currently being supplied by diesel generators. It is proposed to enhance the rural system under study by switching off small diesel stations and replacing them with wind turb...

Economic dispatch is an important optimization problem in power system planning. This article presents an overview of the economic dispatch formulation, its objective, loss coefficient determination, and a case study. In the case study, different scenarios of the economic dispatch in the main interconnected system (MIS) of Oman were considered to h...

تبحث هذه المققلة في إمكقندة الحد من المفاقيدد التقندة في شبكة المنقطق الريفادة في سدح الخيرات في منطقة ثمريت بسلطنة عمقن . واستنقدا إلى بدقنقت الشبكة المتقحة، تم بنقء نموذج لتدفق الطقية للنظقم يدد البحث وتقددم أداء النظقم . ومن أجل التقلدل من المفاقيدد وتحسين شكل الجهد، يتم البحث في الحلول المقترحة المختلفاة بقلتنسدق مع مشغل نظقم التوزيع . كمق يجري...

This study addresses the issue of photovoltaic (PV) systems optimal allocation in electric distribution network. A case study of using particle swarm optimization (PSO) and genetic algorithms (GA) is presented. The objective function of the problem is to minimize system losses while improving voltage profile. The study considers the network of Masi...

Electrical energy consumption if reduced during peak hours can result in the deferment of generation, transmission and distribution capacity addition. The postponement of capacity addition, or “avoided cost” is of promising value to electric utilities who can redirect financial resources for other purposes due to these offset costs. The reduction i...

Smart grid holds a great promise for a cleaner, more efficient power; healthier air; and lower greenhouse gas emissions. A smart grid vastly improves energy efficiency and is already revolutionizing our energy future. A smart power grid delivers electricity from suppliers to consumers using digital technology with two-way communication to control a...

A market reform implemented in Oman in 2004 changed the electricity sector from being a vertically integrated system owned and operated by the Ministry of Housing, Electricity, and Water to a new unbundled system populated by a range of companies and an independent regulator. The restructuring has supported a more than doubling of supplied energy i...

Solar photovoltaic panels (PV) face many challengs in the Sultanate of Oman. These challenges include costs, policy and technical development. With the growing needs of the Sultanate in the energy sector, Grid Connected PV (GCPV) system could help in reducing peak load demand and offer an alternative energy source. This study aims to numerically di...

The measures to reduce energy consumption during peak hours results in delaying the augmentation of generation, transmission and distribution capacity. This delay in capacity addition is an avoided cost and a significant benefit to electric utilities. The reduction in energy consumption is achievable through smart grid implementation. Therefore, th...

Currently, the contribution of renewable energy resources, such as wind power, in power systems is increasing in large, interconnected systems. However, the intermittent nature of renewable energy poses a profound challenge to power system operation and planning. Using energy storage systems can facilitate wind power integration in isolated systems...

A wavelet network-based nonlinear excitation control is designed to enhance the transient stability of a power system. The power system model used to improve the transient stability via excitation control can be written in the canonical form. The resulting excitation control signal that achieves a prescribed tracking performance is shown to include...

This paper investigates the utilization of photovoltaic (PV) systems in a rural area electricitynetwork. The Rural Area Electricity Company of Oman is planning to install a 304 kW PV system at the powerhouse of the Almazyonah network. Based on the available network data, a power flow model of the system under study was built and the system's perfor...

This paper presents a methodology and results of ranking renewable energy (RE) alternatives using analytic hierarchy process (AHP) based on several important criteria, for energy problem in an island in Oman. The unique aspect of this study is that the economic ranking of the RE alternatives is done analytically, using actual existing load and gene...

This paper presents a literature review about unbalance in power systems and a case study about unbalance measurements in the Main Interconnected Network (MIS) of Oman. A review of unbalance causes, negative impacts, mitigation techniques, quantification indices and limits are presented. Moreover, voltage and current unbalance measurements at three...

Smart grid holds a great promise for a cleaner, more efficient power; healthier air; and lower greenhouse gas emissions. A smart grid vastly improves energy efficiency and is already revolutionizing our energy future. A smart power grid delivers electricity from suppliers to consumers using digital technology with two-way communication to control a...

Smart grid holds a great promise for a cleaner, more efficient power; healthier air; and lower greenhouse gas emissions. A smart grid vastly improves energy efficiency and is already revolutionizing our energy future. A smart power grid delivers electricity from suppliers to consumers using digital technology with two-way communication to control a...

Economic Dispatch is an important optimization problem in power system planning. This article presents an overview of the economic dispatch problem, its formulation, and a comparison of addressing the problem between the vertically integrated market and the liberalized market environments.

Many renewable energy (RE) projects cannot compete with conventional energy projects in terms of economics alone. However, if externality costs of competing technologies are carefully evaluated and taken into account the renewable energy projects are likely to be selected on economic basis. But the problem is the evaluation of externality costs whi...

In this paper, a new load frequency control (LFC) for multi-area power systems is developed based on the direct–indirect adaptive fuzzy control technique. LFCs for each area are designed based on availability of frequency deviation of each area and tie-line power deviation between areas. The fuzzy logic system approximation capabilities are exploit...

This paper presents a new adaptive excitation control for power system based on wavelet network. An application of wavelet networks to nonlinear excitation control of a power system is presented in this manuscript. A wavelet network is constructed as an alternative to a neural network to approximate a nonlinear system. Based on this wavelet network...

This paper presents harmonic measurement produced by the heavy industrial loads in Oman and compares these measurements with limits specified by international standards. Furthermore, designing of a shunt filter is discussed which is effective in minimizing current distortion that is caused by nonlinear loads in industrial power systems. The filter...

Solar and wind energy data available for Oman indicate that these two resources are likely to play an important role in the future energy generation in this country. In this paper, a model is designed to assess wind and solar power cost per kWh of energy produced using different sizes of wind machines and photovoltaic (PV) panels at two sites in Om...

This paper presents a case study about the impacts of industrial loads on power quality. A review of flicker causes, negative impacts, mitigation techniques, quantification indices and limits are presented. Moreover, flicker measurements at three grid station that supply the three main industrial areas located in the main interconnected system (MIS...

Renewable energy resources become very popular and commonly used nowadays. An example of a clean renewable energy resource is the energy generated using photovoltaic (PV) systems. As a result of using PV as a renewable energy resource, components of PV such as an inverter become widely used for this purpose and in order to enhance the maximum obtai...

This paper presents a case study about the optimal allocation of a solar photovoltaic (PV) system in a rural area network using genetic algorithms. After developing a power flow model based on the available network data, the system performance is studied in terms of power losses for different scenarios. Using loss minimisation as an objective funct...

This paper presents a case study about the impacts of industrial loads on power quality. A review of harmonics causes, negative impacts, mitigation techniques, quantification indices and limits are presented. Moreover, harmonics measurements at three grid station that supply the three main industrial areas located in the Main Interconnected System...

In this paper a model is built to assess the energy cost/kWh for utilizing wind and solar power produced using different sizes of wind turbines and PV panels at two sites in Oman, which then can be generalized for the remaining locations in Oman. Hourly values of wind speed and solar radiation recorded for several years are used for these locations...

Power system operators and planners are always faced with the problem of how to minimize the transmission and distribution losses. There are several ways to achieve this goal. Reducing losses improves the power system efficiency and yields a substantial energy savings. Other benefits also include released system capacity, possible deferral of capit...

Power system operators and planners are always faced with the problem of how to minimize the transmission and distribution losses. There are several ways to achieve this goal. Reducing losses improves the system efficiency and yields a substantial energy savings. Other benefits also include released system capacity, possible deferral of capital exp...