METHOD, DEVICE, AND SYSTEM FOR CONTROLLED ENERGIZING OF A TRANSFORMER IN A POWER GRID
The invention relates to a method for energizing a transformer (11) in a three-phase power grid (10), wherein the phases (L1, L2, L3) of the transformer (11) are switched-on asynchronously in a manner to reduce inrush-currents flowing in the power grid (10).To avoid high inrush currents with any pos...
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| creator | Bejmert, Daniel Böhme, Klaus Rebizant, Waldemar |
| description | The invention relates to a method for energizing a transformer (11) in a three-phase power grid (10), wherein the phases (L1, L2, L3) of the transformer (11) are switched-on asynchronously in a manner to reduce inrush-currents flowing in the power grid (10).To avoid high inrush currents with any possible transformer configuration, the following steps are performed:- determining a remanent magnetic flux in the respective phases (L1, L2, L3) of the transformer (11);- determining a sequence for switching-on the respective phases of the transformer (11), wherein the sequence depends on mechanical construction properties of the transformer (11) ;- calculating a phase angle of an electric voltage at which at least one phase is to be switched-on first;- calculating, for the remaining phases, a respective time delay after switching-on of the at least one first phase; and- generating switching signals to switch-on the at least one first phase at the determined phase angle of the electric voltage signal and to switch-on the remaining phases at the time defined by the determined respective time-delay.The invention is also related to a corresponding device and system to perform such a method. |
| format | Patent |
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and- generating switching signals to switch-on the at least one first phase at the determined phase angle of the electric voltage signal and to switch-on the remaining phases at the time defined by the determined respective time-delay.The invention is also related to a corresponding device and system to perform such a method.</description><language>eng ; fre ; ger</language><subject>APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS ; CONTROL OR REGULATION THEREOF ; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER ; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ; ELECTRICITY ; EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS ; GENERATION</subject><creationdate>2022</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20221214&DB=EPODOC&CC=EP&NR=4102667A1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20221214&DB=EPODOC&CC=EP&NR=4102667A1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>Bejmert, Daniel</creatorcontrib><creatorcontrib>Böhme, Klaus</creatorcontrib><creatorcontrib>Rebizant, Waldemar</creatorcontrib><title>METHOD, DEVICE, AND SYSTEM FOR CONTROLLED ENERGIZING OF A TRANSFORMER IN A POWER GRID</title><description>The invention relates to a method for energizing a transformer (11) in a three-phase power grid (10), wherein the phases (L1, L2, L3) of the transformer (11) are switched-on asynchronously in a manner to reduce inrush-currents flowing in the power grid (10).To avoid high inrush currents with any possible transformer configuration, the following steps are performed:- determining a remanent magnetic flux in the respective phases (L1, L2, L3) of the transformer (11);- determining a sequence for switching-on the respective phases of the transformer (11), wherein the sequence depends on mechanical construction properties of the transformer (11) ;- calculating a phase angle of an electric voltage at which at least one phase is to be switched-on first;- calculating, for the remaining phases, a respective time delay after switching-on of the at least one first phase; and- generating switching signals to switch-on the at least one first phase at the determined phase angle of the electric voltage signal and to switch-on the remaining phases at the time defined by the determined respective time-delay.The invention is also related to a corresponding device and system to perform such a method.</description><subject>APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS</subject><subject>CONTROL OR REGULATION THEREOF</subject><subject>CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER</subject><subject>CONVERSION OR DISTRIBUTION OF ELECTRIC POWER</subject><subject>ELECTRICITY</subject><subject>EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS</subject><subject>GENERATION</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2022</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNqNikEKwjAQAHvxIOof9gEVrEo9h2STBppN2aSKXkqReBIt1P9jDj7A0wzDLIveYWy8KkHh2UosQZCCcA0RHWjPID1F9m2LCpCQjb1ZMuA1CIgsKOTHIYOlHDp_yWrYqnWxeIzPOW1-XBWgMcpmm6b3kOZpvKdX-gzYHavdvq5Pojr8sXwBvGYvfA</recordid><startdate>20221214</startdate><enddate>20221214</enddate><creator>Bejmert, Daniel</creator><creator>Böhme, Klaus</creator><creator>Rebizant, Waldemar</creator><scope>EVB</scope></search><sort><creationdate>20221214</creationdate><title>METHOD, DEVICE, AND SYSTEM FOR CONTROLLED ENERGIZING OF A TRANSFORMER IN A POWER GRID</title><author>Bejmert, Daniel ; Böhme, Klaus ; Rebizant, Waldemar</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_EP4102667A13</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; fre ; ger</language><creationdate>2022</creationdate><topic>APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS</topic><topic>CONTROL OR REGULATION THEREOF</topic><topic>CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER</topic><topic>CONVERSION OR DISTRIBUTION OF ELECTRIC POWER</topic><topic>ELECTRICITY</topic><topic>EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS</topic><topic>GENERATION</topic><toplevel>online_resources</toplevel><creatorcontrib>Bejmert, Daniel</creatorcontrib><creatorcontrib>Böhme, Klaus</creatorcontrib><creatorcontrib>Rebizant, Waldemar</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Bejmert, Daniel</au><au>Böhme, Klaus</au><au>Rebizant, Waldemar</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>METHOD, DEVICE, AND SYSTEM FOR CONTROLLED ENERGIZING OF A TRANSFORMER IN A POWER GRID</title><date>2022-12-14</date><risdate>2022</risdate><abstract>The invention relates to a method for energizing a transformer (11) in a three-phase power grid (10), wherein the phases (L1, L2, L3) of the transformer (11) are switched-on asynchronously in a manner to reduce inrush-currents flowing in the power grid (10).To avoid high inrush currents with any possible transformer configuration, the following steps are performed:- determining a remanent magnetic flux in the respective phases (L1, L2, L3) of the transformer (11);- determining a sequence for switching-on the respective phases of the transformer (11), wherein the sequence depends on mechanical construction properties of the transformer (11) ;- calculating a phase angle of an electric voltage at which at least one phase is to be switched-on first;- calculating, for the remaining phases, a respective time delay after switching-on of the at least one first phase; and- generating switching signals to switch-on the at least one first phase at the determined phase angle of the electric voltage signal and to switch-on the remaining phases at the time defined by the determined respective time-delay.The invention is also related to a corresponding device and system to perform such a method.</abstract><oa>free_for_read</oa></addata></record> |
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| language | eng ; fre ; ger |
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| subjects | APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS CONTROL OR REGULATION THEREOF CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS GENERATION |
| title | METHOD, DEVICE, AND SYSTEM FOR CONTROLLED ENERGIZING OF A TRANSFORMER IN A POWER GRID |
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