Feed line zero sequence current transformer CT polarity verification method and device
The invention discloses a feed line zero sequence current transformer CT polarity verification method and a device. The method comprises the following steps of under a system charged state, recordingthe information of each feed line arranged on a system bus, wherein the information includes the phas...
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| creator | OU JINGKUI SUN JIANING |
| description | The invention discloses a feed line zero sequence current transformer CT polarity verification method and a device. The method comprises the following steps of under a system charged state, recordingthe information of each feed line arranged on a system bus, wherein the information includes the phase of a zero sequence current and the phase of a zero sequence voltage; and according to the information, selecting the feed line in which the phase of the zero sequence current lags the phase of the zero sequence voltage in a 90 degree +/-delta range; and determining that the zero sequence CT polarity of the selected feed line has a wiring error. In the correlation technology, the polarity verification accuracy of a feed line zero sequence current transformer CT is low under the charged state.In the invention, the above technical problem is solved.
本发明公开了种馈线零序电流互感器CT极性校验方法及装置。其中，该方法包括：在系统带电状态下，记录系统母线所带各馈线的信息，其中，信息包括零序电流的相位和零序电压的相位；根据信息，选出零序电流滞后零序电压的相位90°±Δ范围内的馈线；确定选出的馈线的零序CT极性存在接线错误。本发明解决了相关技术中在带电状态下对馈线零序电流互感器CT进行极 |
| format | Patent |
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本发明公开了种馈线零序电流互感器CT极性校验方法及装置。其中，该方法包括：在系统带电状态下，记录系统母线所带各馈线的信息，其中，信息包括零序电流的相位和零序电压的相位；根据信息，选出零序电流滞后零序电压的相位90°±Δ范围内的馈线；确定选出的馈线的零序CT极性存在接线错误。本发明解决了相关技术中在带电状态下对馈线零序电流互感器CT进行极</description><language>chi ; eng</language><subject>CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ; ELECTRICITY ; EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS ; GENERATION ; MEASURING ; MEASURING ELECTRIC VARIABLES ; MEASURING MAGNETIC VARIABLES ; PHYSICS ; TESTING</subject><creationdate>2018</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=20180622&DB=EPODOC&CC=CN&NR=108196214A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,778,883,25547,76298</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20180622&DB=EPODOC&CC=CN&NR=108196214A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>OU JINGKUI</creatorcontrib><creatorcontrib>SUN JIANING</creatorcontrib><title>Feed line zero sequence current transformer CT polarity verification method and device</title><description>The invention discloses a feed line zero sequence current transformer CT polarity verification method and a device. The method comprises the following steps of under a system charged state, recordingthe information of each feed line arranged on a system bus, wherein the information includes the phase of a zero sequence current and the phase of a zero sequence voltage; and according to the information, selecting the feed line in which the phase of the zero sequence current lags the phase of the zero sequence voltage in a 90 degree +/-delta range; and determining that the zero sequence CT polarity of the selected feed line has a wiring error. In the correlation technology, the polarity verification accuracy of a feed line zero sequence current transformer CT is low under the charged state.In the invention, the above technical problem is solved.
本发明公开了种馈线零序电流互感器CT极性校验方法及装置。其中，该方法包括：在系统带电状态下，记录系统母线所带各馈线的信息，其中，信息包括零序电流的相位和零序电压的相位；根据信息，选出零序电流滞后零序电压的相位90°±Δ范围内的馈线；确定选出的馈线的零序CT极性存在接线错误。本发明解决了相关技术中在带电状态下对馈线零序电流互感器CT进行极</description><subject>CONVERSION OR DISTRIBUTION OF ELECTRIC POWER</subject><subject>ELECTRICITY</subject><subject>EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS</subject><subject>GENERATION</subject><subject>MEASURING</subject><subject>MEASURING ELECTRIC VARIABLES</subject><subject>MEASURING MAGNETIC VARIABLES</subject><subject>PHYSICS</subject><subject>TESTING</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2018</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNqNyjEKwjAUBuAsDqLe4XkAwaiIjhIsTk7FtYTkLwbSl_iSFvT0Lh7A6Vu-uXo0gKcYGPSBJCp4jWAHcqMIuFIVy6VPMkDItJRTtBLqmyZI6IOzNSSmAfWZPFn25DEFh6Wa9TYWrH4u1Lq5tua2QU4dSrYOjNqZu96e9Pm404fL_p_zBS92Obo</recordid><startdate>20180622</startdate><enddate>20180622</enddate><creator>OU JINGKUI</creator><creator>SUN JIANING</creator><scope>EVB</scope></search><sort><creationdate>20180622</creationdate><title>Feed line zero sequence current transformer CT polarity verification method and device</title><author>OU JINGKUI ; SUN JIANING</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_CN108196214A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>chi ; eng</language><creationdate>2018</creationdate><topic>CONVERSION OR DISTRIBUTION OF ELECTRIC POWER</topic><topic>ELECTRICITY</topic><topic>EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS</topic><topic>GENERATION</topic><topic>MEASURING</topic><topic>MEASURING ELECTRIC VARIABLES</topic><topic>MEASURING MAGNETIC VARIABLES</topic><topic>PHYSICS</topic><topic>TESTING</topic><toplevel>online_resources</toplevel><creatorcontrib>OU JINGKUI</creatorcontrib><creatorcontrib>SUN JIANING</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>OU JINGKUI</au><au>SUN JIANING</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Feed line zero sequence current transformer CT polarity verification method and device</title><date>2018-06-22</date><risdate>2018</risdate><abstract>The invention discloses a feed line zero sequence current transformer CT polarity verification method and a device. The method comprises the following steps of under a system charged state, recordingthe information of each feed line arranged on a system bus, wherein the information includes the phase of a zero sequence current and the phase of a zero sequence voltage; and according to the information, selecting the feed line in which the phase of the zero sequence current lags the phase of the zero sequence voltage in a 90 degree +/-delta range; and determining that the zero sequence CT polarity of the selected feed line has a wiring error. In the correlation technology, the polarity verification accuracy of a feed line zero sequence current transformer CT is low under the charged state.In the invention, the above technical problem is solved.
本发明公开了种馈线零序电流互感器CT极性校验方法及装置。其中，该方法包括：在系统带电状态下，记录系统母线所带各馈线的信息，其中，信息包括零序电流的相位和零序电压的相位；根据信息，选出零序电流滞后零序电压的相位90°±Δ范围内的馈线；确定选出的馈线的零序CT极性存在接线错误。本发明解决了相关技术中在带电状态下对馈线零序电流互感器CT进行极</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS GENERATION MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES PHYSICS TESTING |
| title | Feed line zero sequence current transformer CT polarity verification method and device |
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