Power distribution network single-phase earth fault active arc extinguishing method
The invention discloses a power distribution network single-phase earth fault active arc extinguishing method, which comprises the steps of sampling a three-phase power supply voltage and a neutral point voltage, and judging whether a single-phase earth fault occurs or not; and when a single-phase e...
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| creator | WANG JUNFENG LEI ZHIRONG XUE JIAN WANG YUANYANG LEI WANJUN SONG GUOBING |
| description | The invention discloses a power distribution network single-phase earth fault active arc extinguishing method, which comprises the steps of sampling a three-phase power supply voltage and a neutral point voltage, and judging whether a single-phase earth fault occurs or not; and when a single-phase earth fault occurs, closing a switch K of a station transformer power supply corresponding to the fault phase in the arc extinguishing device, wherein a single-phase inverter and the station transformer power supply are simultaneously switched on to enable the voltage of a fault point to be 0, and active arc extinguishing of the single-phase earth fault of the power distribution network is completed. The method has the advantages of being real-time, low in production cost, simple in calculation and high in precision under different fault resistances, control parameters and operation conditions.
本发明公开了一种配电网单相接地故障有源消弧方法，对三相电源电压和中性点电压进行采样，判断是否发生单相接地故障；当发生单相接地故障时，闭合消弧装置中故障相对应站用变电源的开关K，单相逆变器和站用变电源同时投入使故障点电压为0，完成配电网单相接地故障 |
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本发明公开了一种配电网单相接地故障有源消弧方法，对三相电源电压和中性点电压进行采样，判断是否发生单相接地故障；当发生单相接地故障时，闭合消弧装置中故障相对应站用变电源的开关K，单相逆变器和站用变电源同时投入使故障点电压为0，完成配电网单相接地故障</description><language>chi ; eng</language><subject>CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ; ELECTRICITY ; EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS ; GENERATION</subject><creationdate>2020</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=20201127&DB=EPODOC&CC=CN&NR=112003260A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,778,883,25547,76298</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20201127&DB=EPODOC&CC=CN&NR=112003260A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>WANG JUNFENG</creatorcontrib><creatorcontrib>LEI ZHIRONG</creatorcontrib><creatorcontrib>XUE JIAN</creatorcontrib><creatorcontrib>WANG YUANYANG</creatorcontrib><creatorcontrib>LEI WANJUN</creatorcontrib><creatorcontrib>SONG GUOBING</creatorcontrib><title>Power distribution network single-phase earth fault active arc extinguishing method</title><description>The invention discloses a power distribution network single-phase earth fault active arc extinguishing method, which comprises the steps of sampling a three-phase power supply voltage and a neutral point voltage, and judging whether a single-phase earth fault occurs or not; and when a single-phase earth fault occurs, closing a switch K of a station transformer power supply corresponding to the fault phase in the arc extinguishing device, wherein a single-phase inverter and the station transformer power supply are simultaneously switched on to enable the voltage of a fault point to be 0, and active arc extinguishing of the single-phase earth fault of the power distribution network is completed. The method has the advantages of being real-time, low in production cost, simple in calculation and high in precision under different fault resistances, control parameters and operation conditions.
本发明公开了一种配电网单相接地故障有源消弧方法，对三相电源电压和中性点电压进行采样，判断是否发生单相接地故障；当发生单相接地故障时，闭合消弧装置中故障相对应站用变电源的开关K，单相逆变器和站用变电源同时投入使故障点电压为0，完成配电网单相接地故障</description><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>2020</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNqNzbEKwjAQgOEuDqK-w_kAhbQFdymKkwi6lzO9mmBMQu5ifXwz-ABO__LBv6yulzBTgtGyJHvPYoMHTzKH9AS2_uGojgaZgDCJgQmzE0At9k2ASQN9pKhs2ZTAi8SEcV0tJnRMm19X1fZ4uPWnmmIYiCNqKouhPzdNq1TX7tS--8d8AcKZORg</recordid><startdate>20201127</startdate><enddate>20201127</enddate><creator>WANG JUNFENG</creator><creator>LEI ZHIRONG</creator><creator>XUE JIAN</creator><creator>WANG YUANYANG</creator><creator>LEI WANJUN</creator><creator>SONG GUOBING</creator><scope>EVB</scope></search><sort><creationdate>20201127</creationdate><title>Power distribution network single-phase earth fault active arc extinguishing method</title><author>WANG JUNFENG ; LEI ZHIRONG ; XUE JIAN ; WANG YUANYANG ; LEI WANJUN ; SONG GUOBING</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_CN112003260A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>chi ; eng</language><creationdate>2020</creationdate><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>WANG JUNFENG</creatorcontrib><creatorcontrib>LEI ZHIRONG</creatorcontrib><creatorcontrib>XUE JIAN</creatorcontrib><creatorcontrib>WANG YUANYANG</creatorcontrib><creatorcontrib>LEI WANJUN</creatorcontrib><creatorcontrib>SONG GUOBING</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>WANG JUNFENG</au><au>LEI ZHIRONG</au><au>XUE JIAN</au><au>WANG YUANYANG</au><au>LEI WANJUN</au><au>SONG GUOBING</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Power distribution network single-phase earth fault active arc extinguishing method</title><date>2020-11-27</date><risdate>2020</risdate><abstract>The invention discloses a power distribution network single-phase earth fault active arc extinguishing method, which comprises the steps of sampling a three-phase power supply voltage and a neutral point voltage, and judging whether a single-phase earth fault occurs or not; and when a single-phase earth fault occurs, closing a switch K of a station transformer power supply corresponding to the fault phase in the arc extinguishing device, wherein a single-phase inverter and the station transformer power supply are simultaneously switched on to enable the voltage of a fault point to be 0, and active arc extinguishing of the single-phase earth fault of the power distribution network is completed. The method has the advantages of being real-time, low in production cost, simple in calculation and high in precision under different fault resistances, control parameters and operation conditions.
本发明公开了一种配电网单相接地故障有源消弧方法，对三相电源电压和中性点电压进行采样，判断是否发生单相接地故障；当发生单相接地故障时，闭合消弧装置中故障相对应站用变电源的开关K，单相逆变器和站用变电源同时投入使故障点电压为0，完成配电网单相接地故障</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 |
| title | Power distribution network single-phase earth fault active arc extinguishing method |
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