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Parameter Identification of Transformers and Transmission Lines Based on Synchronized Measurements

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dc.contributor.author MURDID, Ecaterina
dc.contributor.author STRATAN, Ion
dc.date.accessioned 2023-11-28T10:39:13Z
dc.date.available 2023-11-28T10:39:13Z
dc.date.issued 2019
dc.identifier.citation MURDID, Ecaterina, STRATAN, Ion. Parameter Identification of Transformers and Transmission Lines Based on Synchronized Measurements. In: Annals of the University of Craiova. Electrical Engineering series. 2019, nr. 43, iss 1, pp. 114-121. ISSN 1842-4805. en_US
dc.identifier.issn 1842-4805
dc.identifier.uri http://repository.utm.md/handle/5014/25044
dc.description.abstract The parameters of power transformers and transmission lines, as a rule, are determined by reference data, but during the operation, it might vary essentially from the actual data. There are noted the reasons for the parameters’ modification. This paper explains the opportu-nity of parameter identification based on the synchronized measurements during the operation of the studied object. The methods of parameter identification can be based on one, two or more measurements. Two-winding power trans-formers and transmission lines can be represented in the form of quadripole, so, applying only the current and volt-age synchronized measurement on both terminals it is pos-sible to obtain parameters of the Г-, Т- and П-forms equiva-lent schemes. There are presented a final and intermediate formula for transformer parameters. Also, there are ob-tained a similar formula for transmission lines. Besides, for transmission lines, there are obtained expressions for the method of the current balance, then for power balance. The last-mentioned methods are based on two samples of meas-urements and haven’t been previously described in any other source. All proposed methods were verified with the models of real transformers and transmission lines. The obtained results show the high accuracy of parameter iden-tification for the proposed methods. For power transform-ers, the influence of load factor upon the values of parame-ters was analyzed. It is worth noting that the most reliable results are obtained from measurements at the load factor β=0.55..0.85. For the model of the transmission line, there were compared the results of all proposed methods: the relative errors of calculation for all mentioned methods are less than 1%. The main contribution of this paper lies in the explanation of the novel method of quadripole (based on one measurement) for parameter identification of transformers and electric lines. That represents a good advantage over other methods with multiple measurements. en_US
dc.language.iso en en_US
dc.publisher University of Craiova en_US
dc.rights Attribution-NonCommercial-NoDerivs 3.0 United States *
dc.rights.uri http://creativecommons.org/licenses/by-nc-nd/3.0/us/ *
dc.subject transformatoare en_US
dc.subject linii electrice en_US
dc.subject măsurări sincronizate en_US
dc.subject pierderi de mers în gol en_US
dc.subject cuadripol en_US
dc.subject balanţa curenţilor en_US
dc.subject balanţa puterilor en_US
dc.title Parameter Identification of Transformers and Transmission Lines Based on Synchronized Measurements en_US
dc.type Article en_US


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