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Electricity deregulation has caused rapid changes in electricity market structure. Vertically integrated utility which performed all the functions including generation, transmission, distribution and retail services are now disaggregated into separate companies devoted to each function. The main goal of this deregulation is to enhance competition and provide new choices and economic benefits to the...
This work presents a case of integration of a small signal stability simulation algorithm in an Automatic Disturbance Analysis software. The small signal stability simulation algorithm is presented in a step by step solution of a chosen case. The algorithm is available for free download1, in order to allow others engineers to reproduce the results and to discuss the developed code. The algorithm was...
South coast of Java has been highly preferred as the placement location of wave energy converter, due to its relatively huge energy potential. Furthermore, linear permanent magnet generator (LPMG) has became one of the popular methods to convert wave energy to electrical energy. Based on the shape of stator core, there are several models of LPMG. Quasi-flat LPMG is one of them, which has rectangular...
Structural analysis for fault detection and isolation (FDI) is an efficient method for designing structured residual generators for model-based diagnosis. It generates a number of diagnostic test candidates, whose number may be large in case of complex systems. This paper proposes a method for selecting residual generators from a possibly large number of candidate equation sets using a diagnosability...
Latest researches related to Wide Area Measurement Systems (WAMS) recommends the development of a cost-effective FPGA based phasor measurement unit for developing a real time synchrophasor network. This paper presents an algorithm for an FPGA based Phasor Measurement Unit (PMU) modeled using Xilinx Vivado System Generator design suite. The backbone of the proposed PMU algorithm is the Non Recursive...
The transient response of power grids to external disturbances influences their stable operation. This paper studies the effect of topology in linear time-invariant dynamics of different power grids. For a variety of objective functions, a unified framework based on H2 norm is presented to analyze the robustness to ambient fluctuations. Such objectives include loss reduction, weighted consensus of...
This paper extends the unlimited capacity location problem with fixed cost in a competitive environment where a firm tends to enter the market competing for exotic products. The demands will increase if a new facility sets into the market. And the demands will be served by both the nearest facilities of the two competitors. A revenue maximization model is presented and a greedy adding and substitution...
A pair of 32 bit Gaussian Random Numbers (GRaNs) is generated. Box Muller (BM) transformation is widely used for generation of high quality Gaussian Random Numbers in hardware. The BM transformation is a direct method to convert random numbers into a Gaussian random numbers. For the generation of uniform random number skip-ahead linear feedback shift register (SA-LFSR) is used which is given as input...
In this research, ant colony algorithm for proportional plus integral (PI) optimal tuning to design load frequency controllers is introduced. A mathematical model of a network with DFIG based wind turbine in two area frequency control is developed. Time domain simulations of the various interconnected power system areas subjected to major disturbances are investigated. A method to enhance the system...
The paper describes Reduced Fast Fourier Transformation (RFFT), an algorithm of harmonic estimation based on the FFT, created by authors, convenient for voltage dips detection. The algorithm is simple, fast, computationally inexpensive and sufficiently accurate. It is tested in Matlab / SimPowerSystems environment. Results show that the algorithm is faster and better than the FFT, which is advantage...
This paper details a new method of technical condition diagnostics of a ship electric power plant (EPP). The method is based on presenting the EPP as an abstract dynamic system, the operation of which involves system state transition under the effect of external and internal disturbances. A ship EPP diagnostic algorithm has been developed that enables locating faults of the power plant elements with...
This paper presents the principle of a load flow algorithm adjusted to asymmetrical operation of the three-phase distribution networks. The algorithm is based on an iterative procedure, which is independently applied on three equivalent sequence networks and uses a phase-to-phase equivalent model for unbalanced loads connected to the analyzed network.
Undeniability is an essential security property of the traditional digital signature. Strong designated verifier signature(DSVS) is a special digital signature in where the validity of a signature can only be checked by the designated verifier. However, most strong DSVS schemes do not have the undeniability property which leads to dispute between a designated verifier and a signer. In this study,...
The main objective of safe and economical operation of electric power systems is to arrange the generator set to put into operation and finally minimize the total cost while meeting certain load demand. The objective of this paper is to minimize the sum of the cost of power generation and the cost of start-up. The primal dual interior point method (PD-IPM) can effectively solve the continuous optimization...
Computation of power mismatch between power demand and generation is one of the meaningful issue in smart grid. Power mismatch occurs due to various factors but some of the important factors are change in load, transmission losses and generator dynamics. Traditionally, power mismatch is computed in a central control room, which has its own advantages and disadvantages. This paper proposes an algorithm...
This work is concerned with the implementation of an Adaptive Fault Diagnoser (AFD) for a system modeled by Timed Continuous Petri Nets under infinite server semantics, where the set of potential faults is a priori known, however their presence during system evolution, type, location, occurrence time, magnitude and behavior over time are unknown. There exist previous works reported in literature,...
In the context of voltage stability, this paper describes a fast algorithm that estimates the maximum loadability point (MLP) of a power system from its power flow equations. First it estimates the load level where each generator reaches its reactive limit, this is done using a quadratic curve fitting technique. After that another quadratic curve is used to estimate the MLP. From two power flow solutions,...
With the current level of pollution in atmosphere caused by fossil fuel emissions, coupled with the ominous fuel scarcity, efficient generation at the power stations is necessary. This paper proposes a multi-objective optimization model to maximize social welfare using the Bees Foraging Algorithm (BFA) and Estimation of Distribution Algorithm (EDA) highlighting the importance of treating generator...
This paper proposes a study of an optimal power management for an autonomous microgrid (MG), applied to real data of an islanded grid distribution system which is located in south Algeria. To perform this study, an objective function is proposed, to minimize fuel cost, active power losses and improve voltage profile. The objective function is solved using Particle Swarm Optimization (PSO) algorithm...
This paper presents the comparison and analysis of four common path following algorithms for the C-Enduro unmanned surface vehicle (USV), which is designed to operate at sea for extended periods of time (up to 3 months). Four path following algorithms were tested that include Carrot chasing path following, Nonlinear guidance law, Pure pursuit and line-of-sight (PLOS) path following and Vector field...
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