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Sequence of failures that aggravates catastrophic events of a power system has attracted a great number of researchers’ attention in exploring and analyzing its enormous losses to the society and economy of a country. Power system cascading collapse is an event in which failure of an electrical component such as transmission line or generator leads to sequence of failures in other equipment. This...
Economic dispatch is an important issue in electrical power system planning and operation. Its aim is to dispatch electricity to the consumers at minimal economic cost, while satisfying system constraints. Prohibited operating zones is one of the constraints which requires attention. This paper presents an efficient optimization technique termed as Immune Log-Normal Evolutionary Programming (ILNEP)...
Most developing countries in the world have witnessed unavoidable increasing power demand. This phenomenon can lead to high power losses and increase in temperature of the transmission lines. Moreover, the continuous increment of the demand can cause reduction of the voltage profile and affect the system stability, which can lead to failure of the power system network due to the stressed condition...
This paper presents a fair and non-discriminatory method in losses charge allocation. Traditionally, the method of allocating the charge to the consumer (generators and loads) is widely based on bilateral contract or postage stamp methods. Recently, the introduction of power tracing in searching the true sense of losses allocation in the real system has been implemented. However, this method requires...
Economic load dispatch is conducted by the utilities in order to determine the best generation level at the most feasible operating cost. In order to guarantee satisfying energy delivery to the consumer, a precise calculation of generation level is required. In order to achieve accurate and practical solution, several considerations such as prohibited operating zones, valve-point effect and ramp-rate...
This paper introduces a new approach of hybrid meta-heuristics based technique for minimizing the transmission loss and the clustering of FACTS device installation in power system network. The proposed Evolutionary Particle Swarm Optimization technique has been implemented to minimize the transmission loss, to improve the voltage and monitor the cost of installation in the system. Subsequently, cluster...
Nowadays, Distributed Generation (DG) has become more popular as a viable element of electric power systems. DG was designed as a small scale generation sources in order to locate at or near load center. The installation of DG is usually deployed within the distribution system to get the positive impacts such as reducing power losses, enhancing voltage profiles, differing costly for upgrading process,...
Plug-in Hybrid Electric Vehicle (PHEV) has gained immense popularity ever since it offers many advantages as compared to conventional internal combustion engine (ICE) vehicle. One millions of PHEVs are estimated to be in the USA market by 2015. Uncoordinated PHEV charging will cause significant impacts to the power grid; i.e. lines and transformers overload and voltage drops. Appropriate charging...
Available transfer capability (ATC) and transmission reliability margin (TRM) provides imperative information for power marketers and planning sectors in a deregulated power system. The stochastic environment of power system activities, however, made the evaluation of TRM and ATC a intricate and complicated task. A stochastic structure has been established for TRM and ATC calculation with implication...
Distribution system represents the final link between bulk power system and the consumers. Distributed generators or small-scale energy sources are usually smaller than central energy sources and can produce electricity in the range of 10 kW to 10,000kW. It is usually connected to the power system points close to the customer. Power loss in a distribution system consists of real and reactive power...
Transmission power loss has become a progressing issue these days due to the changes from monopolized to deregulation environment. This can be due to the large transmission power loss which leads to monetary losses. The presence of deregulated power system requires the participants to make decision on transmission line charge. Hence it is necessary to have a method to determine fair, transparent and...
This paper presents the implementation of Modified Swarm Firefly Algorithm (MSFA) technique which considers the effect of population size in solving directional overcurrent relay coordination problem. The coordination of directional overcurrent relays is formulated as linear programming problem and the proposed technique is compared with those obtained using Particle Swarm Optimization (PSO). Implementation...
In energy industry, generating the correct amount of electrical power is crucial. Economic load dispatch is used to compute the necessary amount of power among the generators. However, each generator in a system is limited by its physical properties that will limit its maximum potential. This prohibited zone divides the actual operation limits of a particular generator into several subdivisions. This...
This paper introduces a new approach of meta-heuristic based method for clustering the optimal location of SVC installation in power system. The algorithm is based on evolutionary particle swarm optimization (EPSO) technique with the objective to minimize the transmission loss in power system. With the formation of cluster decision can be made by power system operators to perform power compensation...
Emission dispatch deals with the process of determining the emission level produced by thermal power plants. Since the concerns toward environmental health paramount, emission dispatch has become a crucial consideration during energy dispatch planning. Different fuel types produce different types of pollutant and thus the total emission level may vary. However, the fluctuation of future load demand...
Emission dispatch is a topic that discusses on the discharge of polluting substance by fossil-fuelled generators. The arising concerns towards environmental quality arouse new trend in power flow studies. Emission dispatch has become a vital consideration during load dispatch scheduling and the power utilities are urged to reduce the pollutant volume to the least. Numerous approaches have been employed...
In this paper, the pulse with modulation as switching strategy for neutral point type buck-boost converter is introduced. The proposed control strategy is implemented and applied to electronic ballast by using neutral point type buck boost converter. The circuit is composed from two ideal switches and Metal Oxide Semiconductor Field Effect Transistor which in its common source configurations used...
Protection system plays an important function in maintaining the stability and reliability of the electric power grid. However, most of the major blackouts happened throughout the world has identified that hidden failure of a protection system is one of the major causes of system cascading failure. This paper proposes a computationally systematic approach to assess the impact of protection system...
This paper presents an approach to sigma multi-objective optimization particle swarm (σ-MOPSO) technique for optimal allocation of Flexible AC Transmission System (FACTS) devices. For this study, Static Var Compensator (SVC) is selected as a compensation device. Proposal σ-MOPSO technique has been implemented to minimize the transmission losses and the cost of investment in the system. Simulations...
This paper presents a new Embedded Meta Evolutionary-Firefly Algorithm (EMEFA) for DG installation which considers the effect of population size on loss and cost minimization while improving the performance of the system. The proposed EMEFA technique is to alleviate the setback experienced in the Meta-EP and firefly in terms slow convergence and less accurate. Implementation of the proposed technique...
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