17 research outputs found
Optimization in tap changer operation of power transformer using reactive power compensation by FACT devices
No full textAn Environmental Friendly and a High Efficient Energy Production Technology from MSW by using Air Fed RDF Gasification
No full textWaste is the discard matters that comes from human activity and require proper disposal to avoid harmful effects to the environment.Though, there is still energy hidden inside the disposal and one need to recover that method because it is considered a green and clean renewable energy that can reduce greenhouse gas emission and lessen the effect of global warming. This paper provides an overview of the basic principle, steps involved in extraction of valuable energy from municipal solid waste (MSW) by using Air Fed Refuse derived fuel (RDF) gasification, benefits of gasification on environment and how gasification advances over incineration. MSW gasification is measured as the most prospective technology to replace incineration, because of the advantages, such as the strict control of pollution, significant volume reduction and enhances recycling rates
Design and Implementation of Power System Optomization Using Particles Swarm Algorithms for Addressing the Economic Dispatch Problem
No full textInternational audienceThis research is aimed to design a power system using particle swarm algorithm (PSA) and test its efficiency on a standard IEEE bus bar system. The algorithm has been modified for power generating system and successfully demonstrates and provides optimization results for six generating units. Reducion in fuel cost by distributing load among the generating units in inter connected bus bar system is the core area of this research. The losses in power transmission as well as generation are also minimized. Moreover, the PSA coding was executed using MATLAB and the graphs are shown for comparison with other optimization techniques. The results obtained using PSA were compared with other optimization techniques and PSA was found comparatively better than other techniques. PSA has been found to be reliable for power system optimization and hence suitable for practical purposes
Protection of Microgrid by Using Adaptive Relaying Scheme
No full textInternational audienceRecently, different ideas are developed and implemented towards the interest of getting more effective low carbon energy sources and Microgrids. A microgrid has two modes of operations, Grid connected mode of operation and stand alone mode of operation. When the mode of operation is changed from grid connected mode to stand alone mode there is a drastic reduction in the magnitude of the fault current , so this mannerism and shows the problem with the protection .In order to overcome this sort of problem we develop this scheme. In this scheme the relays are made quite intelligent to decide the mode of operation of the system and to sense the expected faults on time. Relay shows a flexible behavior to the magnitude of the fault and change its setting according to the fault magnitude. Here is the demonstration of how to develop the hardware for the adaptive relays for the purpose of protection of microgrids, certain cases are also developed to validate its operation too. Relays adopts itself to the fault to adjust its setting and time of operation
Frequency Regulation Control of Wind Turbine Incorporating Stepper Motor in Pitch System
No full textThis paper describes the presentation of a stepper motor in the pitch control system to regulate frequency. The controller sense the frequency deviation. If the frequency deviation is positive the stepper motor will recommend the motor to pitch the turbine blade slightly away from wind pressure. Similarly if the frequency deviation is negative the stepper motor will recommend the motor to pitch the turbine blade slightly towards wind pressure. The blade pitching is performed by another motor. The frequency controlled by conventional hydraulic mean is costly complex and quite slow in response. They consume enough time during big load changes. In this research a stepper motor is being used for frequency control. A stepper motor is economical capable of fast action and easy to control. The position of the stepper motor is controlled by a PI Proportional Integral controller. Thus a proposed frequency control system incorporating a stepper motor in pitch control system is modeled, designed and simulated in Matlab/ Simulink. The frequency control through stepper motor improves the Transient and steady state performances are enhanced and moreover it reduces frequency spikes
Integration of distributed generation into a radial distribution feeder for reduction of line losses
No full textImpact of Solar PV Integration on Short Circuit Current and Protection of Distribution System
No full textInjection of solar power to current distribution system has provide many benefits such as power quality is improved, reliability is increased and peak demand is full filled. when a solar source is injected despite of it benefits it has some negative impact on protection system that in turn effect reliability and stability of system. injecting solar PV to system cause to increase fault current and severely effect protection system. We use IEEE 13 bus system for simulation with software ETAP.we inject solar PV on different buses and apply fault on different location. we compare the result of short circuit study of normal case and when PV is added. We also increase the penetration of PV and see it impact short circuit current . This comparison enables us to investigate impact of solar PV on short circuit current level and impact of this current on protection scheme and devices in this paper we will investgate the impact of injecting solar power on fault current level of distribution system and study the consequent effect of this fault current on protection system and devices of long transmission line and line losses is also reduced so it encourages to generate electricity in local and supply the near by load rather than constructing a long transmission line
Techno-Economic Survey Analysis of UPS System as Backup Power Source during Load Shedding
No full textThe energy crisis in Pakistan has forced the general public (consumers) to use backup power source based on portable generator sets and Un-interrupted Power Supply (UPS). In order to maintain continuity of supply to basic appliances such as lights and ceiling fans, majority of consumers use UPS with battery backup due to less initial cost as compared to portable generator sets. Since the use of UPS as backup power source, several technical and economic issues to their use have come about. Most of the consumers are unaware of the problems related to the use of UPS and their up-keeping. From the utility side there is no policy as regard to the problems that may be experienced on the distribution feeders to use of UPS. Lack of standards as to the performance of UPS has made the local industry to manufacture cheap sub-standard systems that may have negative impact on the utility supply and the consumer load. The objective is to conduct a survey in Peshawar District, most affected by load shedding, highlighting the technical and economic impact of UPS. The survey will help in research related to UPS, for setting standards, policy and to address the areas where improvement is needed
Design and Implementation of Power System Optimization Using Particles Swarm Algorithms
No full textThis study aims to develop a power system optimization simulation environment for one of Electrical Supply Grid in Peshawar Region where theoretical, calculated and collected data is used and proposes enhancements in the distribution system as per the results of the simulation of the Particle Swarm Optimizer and Newton Rhapson Algorithm on it. The simulation framework is cross-evaluated on the IEEE-30 Bus bar system and compared with eminent researches in this field. The results are plotted and tabulated first as a comparison and then as a proposed model for Peshawar Region’s selected substations and the involved grid
