Determining the Broadband Loss Characteristics of Power Transformer Based on Measured Transformer Network Functions and Vector Fitting Method
A method is proposed in this paper to determine the frequency-dependent loss of power transformer for very fast transient simulation. The attenuation factors and the corresponding natural frequencies of the transformer at measurable range were extracted using measured power transformer network funct...
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| Veröffentlicht in: | IEEE transactions on power delivery 2013-10, Vol.28 (4), p.2456-2464 |
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| creator | ZHENG, Yi-Ming WANG, Zan-Ji |
| description | A method is proposed in this paper to determine the frequency-dependent loss of power transformer for very fast transient simulation. The attenuation factors and the corresponding natural frequencies of the transformer at measurable range were extracted using measured power transformer network functions and the vector-fitting method (VFM). The approximate frequency-dependent formula of attenuation factors was established by analyzing the theoretical transformer model. Then, the parameters in the formula were optimized by fitting the real part (attenuation factors) and imagine part (natural angular frequencies) of poles obtained by VFM. The time-domain simulation process can be divided into two steps. First, the lossless transformer transient response, which could be expressed as the sum of the natural frequency components, is obtained by solving the network differential equations. Second, the attenuation factors calculated by the approximate formula are added directly on the corresponding frequency components. By comparing with the measured results, it is shown that the proposed fitting formula for calculating the attenuation factors could improve the simulation accuracy in comparison with the existing methods. |
| doi_str_mv | 10.1109/TPWRD.2013.2265401 |
| format | Article |
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The attenuation factors and the corresponding natural frequencies of the transformer at measurable range were extracted using measured power transformer network functions and the vector-fitting method (VFM). The approximate frequency-dependent formula of attenuation factors was established by analyzing the theoretical transformer model. Then, the parameters in the formula were optimized by fitting the real part (attenuation factors) and imagine part (natural angular frequencies) of poles obtained by VFM. The time-domain simulation process can be divided into two steps. First, the lossless transformer transient response, which could be expressed as the sum of the natural frequency components, is obtained by solving the network differential equations. Second, the attenuation factors calculated by the approximate formula are added directly on the corresponding frequency components. By comparing with the measured results, it is shown that the proposed fitting formula for calculating the attenuation factors could improve the simulation accuracy in comparison with the existing methods.</description><identifier>ISSN: 0885-8977</identifier><identifier>EISSN: 1937-4208</identifier><identifier>DOI: 10.1109/TPWRD.2013.2265401</identifier><identifier>CODEN: ITPDE5</identifier><language>eng</language><publisher>New York, NY: IEEE</publisher><subject>Applied sciences ; Attenuation ; Convertors ; Electrical engineering. 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The attenuation factors and the corresponding natural frequencies of the transformer at measurable range were extracted using measured power transformer network functions and the vector-fitting method (VFM). The approximate frequency-dependent formula of attenuation factors was established by analyzing the theoretical transformer model. Then, the parameters in the formula were optimized by fitting the real part (attenuation factors) and imagine part (natural angular frequencies) of poles obtained by VFM. The time-domain simulation process can be divided into two steps. First, the lossless transformer transient response, which could be expressed as the sum of the natural frequency components, is obtained by solving the network differential equations. Second, the attenuation factors calculated by the approximate formula are added directly on the corresponding frequency components. By comparing with the measured results, it is shown that the proposed fitting formula for calculating the attenuation factors could improve the simulation accuracy in comparison with the existing methods.</description><subject>Applied sciences</subject><subject>Attenuation</subject><subject>Convertors</subject><subject>Electrical engineering. Electrical power engineering</subject><subject>Electrical machines</subject><subject>Electrical power engineering</subject><subject>electromagnetic transient analysis</subject><subject>Exact sciences and technology</subject><subject>Frequency measurement</subject><subject>Miscellaneous</subject><subject>Power electronics, power supplies</subject><subject>Power networks and lines</subject><subject>Power system simulation</subject><subject>Power transformer insulation</subject><subject>Power transformers</subject><subject>rational approximation</subject><subject>simulation</subject><subject>Studies</subject><subject>Transfer functions</subject><subject>Transformers and inductors</subject><subject>Transient analysis</subject><subject>Windings</subject><issn>0885-8977</issn><issn>1937-4208</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2013</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNpNkN1OGzEQRi1UJNKUF4AbS1UvNx3_7XovS0KgUqCoStvLleOdJYZkHWxHiIfgnes0UdSrGek78410CLlgMGIM6q_zhz8_JyMOTIw4L5UEdkIGrBZVITnoD2QAWqtC11V1Rj7G-AQAEmoYkPcJJgxr17v-kaYl0qvgTbswfUtnPkY6XppgbEZcTM5G6jv64F8x0Hkwfex8WOf9ykRsqe_pHZq4DXn_P73H9OrDM51ue5uc7yPdtf9Gm3ygU5fS7vUdpqVvP5HTzqwinh_mkPyaXs_Ht8Xsx8338bdZYQVXqUADpSk7kK2tF1IuLBOl1S2vW22hVIKpRSlzBMYoyazmqlKdELLTaLUGK4bk8753E_zLFmNqnvw29Pllw6QEyCKZzBTfUzZkFQG7ZhPc2oS3hkGz0978097stDcH7fnoy6HaRGtWXRZhXTxe8kozDkpn7nLPOUQ8xqWqVSml-AuGBo2u</recordid><startdate>20131001</startdate><enddate>20131001</enddate><creator>ZHENG, Yi-Ming</creator><creator>WANG, Zan-Ji</creator><general>IEEE</general><general>Institute of Electrical and Electronics Engineers</general><general>The Institute of Electrical and Electronics Engineers, Inc. (IEEE)</general><scope>97E</scope><scope>RIA</scope><scope>RIE</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SP</scope><scope>7TB</scope><scope>8FD</scope><scope>FR3</scope><scope>KR7</scope><scope>L7M</scope></search><sort><creationdate>20131001</creationdate><title>Determining the Broadband Loss Characteristics of Power Transformer Based on Measured Transformer Network Functions and Vector Fitting Method</title><author>ZHENG, Yi-Ming ; WANG, Zan-Ji</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c325t-ea06a6f04dc9b44bc136c8d29d8c065315b64c9b0aa541c82575f334f8ec880c3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2013</creationdate><topic>Applied sciences</topic><topic>Attenuation</topic><topic>Convertors</topic><topic>Electrical engineering. Electrical power engineering</topic><topic>Electrical machines</topic><topic>Electrical power engineering</topic><topic>electromagnetic transient analysis</topic><topic>Exact sciences and technology</topic><topic>Frequency measurement</topic><topic>Miscellaneous</topic><topic>Power electronics, power supplies</topic><topic>Power networks and lines</topic><topic>Power system simulation</topic><topic>Power transformer insulation</topic><topic>Power transformers</topic><topic>rational approximation</topic><topic>simulation</topic><topic>Studies</topic><topic>Transfer functions</topic><topic>Transformers and inductors</topic><topic>Transient analysis</topic><topic>Windings</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>ZHENG, Yi-Ming</creatorcontrib><creatorcontrib>WANG, Zan-Ji</creatorcontrib><collection>IEEE All-Society Periodicals Package (ASPP) 2005-present</collection><collection>IEEE All-Society Periodicals Package (ASPP) 1998-Present</collection><collection>IEEE Electronic Library (IEL)</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Electronics & Communications Abstracts</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Civil Engineering Abstracts</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>IEEE transactions on power delivery</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>ZHENG, Yi-Ming</au><au>WANG, Zan-Ji</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Determining the Broadband Loss Characteristics of Power Transformer Based on Measured Transformer Network Functions and Vector Fitting Method</atitle><jtitle>IEEE transactions on power delivery</jtitle><stitle>TPWRD</stitle><date>2013-10-01</date><risdate>2013</risdate><volume>28</volume><issue>4</issue><spage>2456</spage><epage>2464</epage><pages>2456-2464</pages><issn>0885-8977</issn><eissn>1937-4208</eissn><coden>ITPDE5</coden><abstract>A method is proposed in this paper to determine the frequency-dependent loss of power transformer for very fast transient simulation. The attenuation factors and the corresponding natural frequencies of the transformer at measurable range were extracted using measured power transformer network functions and the vector-fitting method (VFM). The approximate frequency-dependent formula of attenuation factors was established by analyzing the theoretical transformer model. Then, the parameters in the formula were optimized by fitting the real part (attenuation factors) and imagine part (natural angular frequencies) of poles obtained by VFM. The time-domain simulation process can be divided into two steps. First, the lossless transformer transient response, which could be expressed as the sum of the natural frequency components, is obtained by solving the network differential equations. Second, the attenuation factors calculated by the approximate formula are added directly on the corresponding frequency components. By comparing with the measured results, it is shown that the proposed fitting formula for calculating the attenuation factors could improve the simulation accuracy in comparison with the existing methods.</abstract><cop>New York, NY</cop><pub>IEEE</pub><doi>10.1109/TPWRD.2013.2265401</doi><tpages>9</tpages></addata></record> |
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| ispartof | IEEE transactions on power delivery, 2013-10, Vol.28 (4), p.2456-2464 |
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| source | IEEE Electronic Library (IEL) |
| subjects | Applied sciences Attenuation Convertors Electrical engineering. Electrical power engineering Electrical machines Electrical power engineering electromagnetic transient analysis Exact sciences and technology Frequency measurement Miscellaneous Power electronics, power supplies Power networks and lines Power system simulation Power transformer insulation Power transformers rational approximation simulation Studies Transfer functions Transformers and inductors Transient analysis Windings |
| title | Determining the Broadband Loss Characteristics of Power Transformer Based on Measured Transformer Network Functions and Vector Fitting Method |
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