Mathematical Investigation in Surges Using Fuzzy Logic in Electrical System

Abstract

Earlier it was well known that the error functions are useful for the analysis of sequence components. But there is no need of all these components as park transformation is use-ful for these all tools. However, it has been noted that Fuzzy logic is the best tool for the analysis in the place of component theory. Even orthogonalization of a matrix is suffi-cient for this work. Fuzzy logic is the general transformation as compared to probability functions and other all components. It is extremely useful in the computational analysis of faults and surges. Faults always generate surges of steep wave front. The velocity of the surge is equal to velocity of light. newlineMathematical Investigation in surges using Fuzzy Logic in Electrical System and Se-quence Component methods is most powerful tools for the solution of problems of un-balanced in Electrical System. Unsymmetrical faults have been the main focus of inter-est for researches. The sequence components in particular the positive and negative se-quence components were originally introduced by Stokvis (1912). After a period of five years Lewis (1917) introduced a component method which is similar to that of Clarke (1938). Fortescue (1918) introduced the method of symmetrical components for the analysis of the unbalance problem in Polyphase Electrical Circuits. The symmetrical components became a power tool for the solution of the problem related to the unsym-metrical faults. For the solution of an Electrical Machine problem Park (1929), intro-duced a component theory called park (dqo) components. Clark (1938) introduced Clark (and#945;,and#946;,o) components, for the solution of the balance problem s in three phase circuits. newlineDuring the period Hwang (1965) introduced his own component method. He analyzed the problem of synchronous machines using components (1965, 1967, 1969, and 1971). This method is a simple modification of Concordia components. In that only the sign of and#946;-component in Concordia component is changed.