Ahmad Samim Noorzad

Optimal Operation and Management for Smart Grid Subsumed High Penetration of Renewable Energy, Electric Vehicle, and Battery Energy Storage System

Abstract Distributed generators (DG) and renewable energy sources have been attracting special attention in distribution systems in all over the world. Renewable energies, such as photovoltaic (PV) and wind turbine generators are considered as green energy. However, a large amount of DG penetration causes voltage deviation beyond the statutory range and reverse power flow at interconnection points in the distribution system. If excessive voltage deviation occurs, consumer’s electric devices might break and reverse power flow will also has a negative impact on the transmission system. Thus, mass interconnections of DGs has an adverse effect on both of the utility and the customer. Therefore, reactive power control method is proposed previous research by using inverters attached DGs for prevent voltage deviations. Moreover, battery energy storage system (BESS) is also proposed for resolve reverse power flow. In addition, it is possible to supply high quality power for managing DGs and BESSs. Therefore, this paper proposes a method to maintain voltage, active power, and reactive power flow at interconnection points by using cooperative controlled of PVs, house BESSs, EVs, large BESSs, and existing voltage control devices. This paper not only protect distribution system, but also attain distribution loss reduction and effectivity management of control devices. Therefore mentioned control objectives are formulated as an optimization problem that is solved by using the Particle Swarm Optimization (PSO) algorithm. Modified scheduling method is proposed in order to improve convergence probability of scheduling scheme. The effectiveness of the proposed method is verified by case studies results and by using numerical simulations in MATLAB®.

Smart house-based optimal operation of thermal unit commitment for a smart grid considering transmission constraints

ABSTRACT This paper presents a smart house-based power system for thermal unit commitment programme. The proposed power system consists of smart houses, renewable energy plants and conventional thermal units. The transmission constraints are considered for the proposed system. The generated power of the large capacity renewable energy plant leads to the violated transmission constraints in the thermal unit commitment programme, therefore, the transmission constraint should be considered. This paper focuses on the optimal operation of the thermal units incorporated with controllable loads such as Electrical Vehicle and Heat Pump water heater of the smart houses. The proposed method is compared with the power flow in thermal units operation without controllable loads and the optimal operation without the transmission constraints. Simulation results show the validation of the proposed method.

Electricity Sector Development Trends in an After-war Country: Afghanistan Aspiration for an Independent Energy Country

The rapid change in economic growth and human civilization has led to a dramatic increase in energy utilization and electricity demand. That faces nations with the challenge of maintaining cost-effective and clean power energy production. This paper aims to present Afghanistan electricity sector development and energy resources exploitation in a broad context. With the global growing interest in Afghanistan rehabilitation, this paper presents energy development trends in Afghanistan. Besides, the future outlook up to 2032 and the challenges that face electricity sector are highlighted. This study tries to emerge the historical development, current status, and future direction of Afghanistan electricity sector till 2032, in a precise collection.

Electricity Sector Transitions in an after War Country: A Review of Afghanistan’s Electricity

Afghanistan electricity sector has experienced many ups and downs of transitions from 1893 to date. With the growing global interest in Afghanistan rehabilitation, this paper presents an over view of Afghanistan electricity sector which includes the historical development trends, power generation potential, sustainable energy exploitation, electricity policy transition and immature policies experiences, and the legacy of the war. The lack of access to the basic information about Afghanistan power sector was one of the serious concerns of international donors and investors. Still, this information somehow has been kept in official documents wrap up. In this collection, the Afghanistan’s electricity sector is pictured as a reference for Afghanistan electricity. It can be opening toward primary sources of Afghanistan electricity sector of the lessons learned and asset for researchers interesting in this topic.

Multi-objective optimization approach for SVRs annual optimal operation and optimal placement

This paper proposes an application of multi objective optimization method in a smart grid. Recently, smart gird problems has become more diversified and complex which cannot be solved by single objective optimization method. Technical, economical, and placement problems of control devices should also be considered as required. The technical and economical problems are treated as ordinal multi objective optimization problem, in addition, with the operating schedule of control devices. The placement problem can be solved by using concept of combinational optimization. Therefore, this paper provides an optimization method, which simultaneously considers both multi objects and combinational problem. The handling method for combinational problems and two fold diversity in pareto optimal solutions are also provided. Finally, an index is provided from which solution can be selected by system designer and operator. This method enables to calculate annual simulation, which helps to solve optimal placement and scheduling problem throughout annual simulation.

Active power control of direct current smart house using electric vehicles and controllable loads

DC smart house is receiving attention as means for the management of electric power. Since many domestic appliances are also DC devices, the DC smart house can also reduce conversion losses. Recently, the increased introduction of residential photovoltaic generators (PV) has been remarkable. However, since the output power of PV fluctuates according to weather conditions and is commonly allowed to flow into the power grid, it is difficult for the supply side to balance supply and demand. The purpose of this study is to prevent the fluctuations of the PV output power connected to the DC smart house from flowing into the power system. This paper proposes compensation methods for fluctuations in the output power of the PV as well as those caused by consumption power of uncontrollable loads. The proposed scheme achieves a stable constant active power interconnection point between the smart house and the grid by cooperative operation of Electric Vehicle (EV) and Electric Water Heater (EWH). The control scheme ...