The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
This paper presents a coil model of circuit breaker using MATLAB/Simulink and proposes a weighted morphological filter with dual structuring elements (SEs) to process the coil current of the circuit breaker. In order to make sure that the Simulink model of the trip and close coil is accurate enough, the genetic algorithm (GA) is applied to optimize its parameters, targeting the minimum difference...
A model based on the Markov chain is proposed in this paper, which simulates steady-state variables of power systems to study the impact of the penetration of renewable energy generators (REGs). In this model, the power outputs of REGs are characterized by continuous time Markov chain (CTMC). In conjunction with the relationship between REGs' outputs and steady state variables, how these variables...
This paper presents a novel method to solve the estimation of the amplitudes and phases of different harmonic components contained in a power electrical signal, based on Particle Swarm Optimizer with Natural Selection (PSONS). PSONS is an Evolutionary Algorithm (EA) with the natural selection mechanism. The proposed method utilizes PSONS to estimate the phases of the harmonics and a standard least-square...
This paper proposes a pre-processing method to enhance the accuracy of wind power forecast. Instead of using the whole dataset indifferently for training, the proposed method only uses the segments that share the same pattern. In order to search for such segments in the historical data, a k-OCCO filter and a weighted multi-resolution morphological gradient (MMG) are employed. Afterwards, the forecast...
We propose a novel modeling method, called individual-based model (IBM), for complex systems. Stemmed from ecological models, the IBM concerns an ‘individual’ as a basic modeling unit and takes fully account of the dynamics of an individual and the interactions among individuals and the environment. This paper discusses at first the characteristics and formal definition of IBM in detail. The differences...
This paper focuses on implementing a Discrete Paired-Bacteria Optimizer (DPBO) to solve the Traveling Salesman Problem (TSP). As a well-studied NP-hard problem, it is known that the running time for any optimization algorithm for the TSP increases exponentially with the number of cities. Therefore, in order to reduce the optimization computational complexity, this research introduces a swarm algorithm...
Pollution of the power plant has caused harmful environmental effects due to the emission of greenhouse gas. The pollution can be reduced by adjusting the real power outputs of different power plants. However, the relocation of real power outputs results an additional outlay in the system. In order to eliminate the conflict between the cost and emission, an optimal power flow is introduced in this...
Optimal Power Flow (OPF) is an effective tool for dispatch planning of power systems, and the algorithms aiming to solve the OPF have been widely studied. Among these algorithms, the Evolutionary Algorithms (EAs) are a popular type, which have been investigated. However, EAs are also notorious for the intensive computation caused by a large amount of evaluations of the objective function required...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.