Optimal Photovoltaic Placement by Self-organizing Hierarchical Binary Particle Swarm Optimization in Distribution Systems

AbstractThe novel method of BPSO is proposed for solving optimal number and size of photovoltaic (PV) units on a radius distribution system. For the optimal number of PV unit problem, the SHBPSO is used to obtain quick convergence and explore solution space in the new direction. For the problem of the optimal sizes of PV units, the proposed method is used to avoid a local optimum trap. Multiple grid-connected PV units are considered. The SHBPSO can find better locations and sizes than other methods such as the classical BPSO, the BPSO with inertia weight, the BPSO with acceleration coefficients and the BPSO with sigmoid increasing inertia weight on the radial distribution system. The results including the active power of PV supplies injected into the system and total yearly power loss reduction are analyzed

Opportunities and Challenges of Integrating Renewable Energy in Smart Grid System

AbstractSmart grid technology is the key for an efficient use of distributed energy resources. Noting the climate change becomes an important issue the whole world is currently facing, the ever increasing price of petroleum products and the reduction in cost of renewable energy power systems, opportunities for renewable energy systems to address electricity generation seems to be increasing. However, to achieve commercialization and widespread use, an efficient energy management strategy of system needs to be addressed. Recently, the concept of smart grid has been successfully applied to the electric power systems. This paper presents the study of integrating renewable energy in smart grid system. The introductory sections provide the role of renewable energy and distributed generation in smart grid system. Subsequent sections cover the concept of smart grid as well as benefits and barrier of smart grid renewable energy system. Pricing is a significant variable in success of renewable energy promotion. Thus, it is important to gain insight to renewable energy pricing by considering unique characteristics associated with renewable energy alternatives. A review of work done in renewable smart grid systems in recent years indicates the promising potential of such research characteristics in the future. This would be useful to developers and practitioners of renewable energy systems and to policy makers

Field analysis of solar PV-based collective systems for rural electrification.

This article analyses the long-term performance of collective off-grid photovoltaic (PV) systems in rural areas. The use of collective PV systems for the electrification of small medium-size villages in developing countries has increased in the recent years. They are basically set up as stand-alone installations (diesel hybrid or pure PV) with no connection with other electrical grids. Their particular conditions (isolated) and usual installation places (far from commercial/industrial centers) require an autonomous and reliable technology. Different but related factors affect their performance and the energy supply; some of them are strictly technical but others depend on external issues like the solar energy resource and users’ energy and power consumption. The work presented is based on field operation of twelve collective PV installations supplying the electricity to off-grid villages located in the province of Jujuy, Argentina. Five of them have PV generators as unique power source while other seven include the support of diesel groups. Load demand evolution, energy productivity and fuel consumption are analyzed. Besides, energy generation strategies (PV/diesel) are also discussed

PV hybrid systems for rural electrification in Thailand

Photovoltaic (PV) hybrid systems can make a positive contribution to the sustainability of rural communities in developing countries that do not have access to electricity grid. Integration of solar photovoltaic system with diesel generator for remote and rural areas would assist in expanding the electricity access in the tropical region. A survey of PV hybrid system in Thailand during the last decade regarding to status of technology, performance in terms of technical and economic aspects, and their prospects has been presented in this paper.PV hybrid system Rural electrification Technical performance Financial analysis Prospects

A Study of Particle Swarm Technique for Renewable Energy Power Systems

Abstract- Renewable power system is an innovative option forelectricity generation as it is a clean energy resource. Noting theclimate change becomes an important issue the whole world iscurrently facing, the ever-increasing price of petroleum products(now about US$ 80 a barrel) and the reduction in cost ofrenewable energy power systems, opportunities for renewableenergy systems to address electricity generation seems to beincreasing. However, to achieve commercialization andwidespread use, an efficient energy management strategy ofsystem needs to be addressed. Recently, particle swarmoptimization (PSO) has been successfully applied to the variousfields of power system including economic dispatch problems.This paper presents the survey of PSO in solving optimizationproblems in electric power systems. The introductory sectionsprovide the new way to implement renewable energy powersystem using particle swarm technique. Subsequent sectionscover recent trends of PSO development in renewable energypower systems. This technique would be useful to determine thepowerful energy management strategy so as to meet the requiredload demand at minimum operating cost while satisfying systemequality and inequality constraints.Keywords - Particle Swarm Optimization (PSO), Renewableenergy, Sustainable development6 Halama