High-voltage direct-current transmission line protection method and device for distinguishing internal and external faults of smoothing reactor
The invention discloses a high-voltage direct-current transmission line protection method for distinguishing internal and external faults of a smoothing reactor. The method comprises the steps: obtaining the difference value of a rectification side current according to the current values of the rect...
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| creator | WANG XINGGUO YU BIN DU DINGXIANG SUN YUEQIN ZHANG JUN YU YANG HUANG TAIGUI XIE MIN SHAO QINGZHU YE YUANBO CAO HONG CHEN SHI DING JINJIN WANG TONGWEN WANG DONG WANG HAIGANG ZHANG FENG DAI CHANGCHUN ZHANG WEI SUN HUI GAO BO CHENG XIAOPING LIU LUDENG |
| description | The invention discloses a high-voltage direct-current transmission line protection method for distinguishing internal and external faults of a smoothing reactor. The method comprises the steps: obtaining the difference value of a rectification side current according to the current values of the rectification side of a high-voltage direct-current transmission line at the current moment and the previous moment; obtaining the difference value of the current of the inversion side according to the current moment and the current value of the delay inversion side of the high-voltage direct-current line transmission channel; calculating a differential asynchronous differential quantity according to the differential value of the rectification side current and the differential value of the inversionside current, and if the differential asynchronous differential quantity is greater than a differential asynchronous differential relay constant value, judging that a fault occurs in the high-voltagedirect-current transmissi |
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The method comprises the steps: obtaining the difference value of a rectification side current according to the current values of the rectification side of a high-voltage direct-current transmission line at the current moment and the previous moment; obtaining the difference value of the current of the inversion side according to the current moment and the current value of the delay inversion side of the high-voltage direct-current line transmission channel; calculating a differential asynchronous differential quantity according to the differential value of the rectification side current and the differential value of the inversionside current, and if the differential asynchronous differential quantity is greater than a differential asynchronous differential relay constant value, judging that a fault occurs in the high-voltagedirect-current transmissi</description><language>chi ; eng</language><subject>CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER ; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ; ELECTRICITY ; EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS ; GENERATION ; MEASURING ; MEASURING ELECTRIC VARIABLES ; MEASURING MAGNETIC VARIABLES ; PHYSICS ; SYSTEMS FOR STORING ELECTRIC ENERGY ; TESTING</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=20200417&DB=EPODOC&CC=CN&NR=111030062A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76290</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20200417&DB=EPODOC&CC=CN&NR=111030062A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>WANG XINGGUO</creatorcontrib><creatorcontrib>YU BIN</creatorcontrib><creatorcontrib>DU DINGXIANG</creatorcontrib><creatorcontrib>SUN YUEQIN</creatorcontrib><creatorcontrib>ZHANG JUN</creatorcontrib><creatorcontrib>YU YANG</creatorcontrib><creatorcontrib>HUANG TAIGUI</creatorcontrib><creatorcontrib>XIE MIN</creatorcontrib><creatorcontrib>SHAO QINGZHU</creatorcontrib><creatorcontrib>YE YUANBO</creatorcontrib><creatorcontrib>CAO HONG</creatorcontrib><creatorcontrib>CHEN SHI</creatorcontrib><creatorcontrib>DING JINJIN</creatorcontrib><creatorcontrib>WANG TONGWEN</creatorcontrib><creatorcontrib>WANG DONG</creatorcontrib><creatorcontrib>WANG HAIGANG</creatorcontrib><creatorcontrib>ZHANG FENG</creatorcontrib><creatorcontrib>DAI CHANGCHUN</creatorcontrib><creatorcontrib>ZHANG WEI</creatorcontrib><creatorcontrib>SUN HUI</creatorcontrib><creatorcontrib>GAO BO</creatorcontrib><creatorcontrib>CHENG XIAOPING</creatorcontrib><creatorcontrib>LIU LUDENG</creatorcontrib><title>High-voltage direct-current transmission line protection method and device for distinguishing internal and external faults of smoothing reactor</title><description>The invention discloses a high-voltage direct-current transmission line protection method for distinguishing internal and external faults of a smoothing reactor. 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The method comprises the steps: obtaining the difference value of a rectification side current according to the current values of the rectification side of a high-voltage direct-current transmission line at the current moment and the previous moment; obtaining the difference value of the current of the inversion side according to the current moment and the current value of the delay inversion side of the high-voltage direct-current line transmission channel; calculating a differential asynchronous differential quantity according to the differential value of the rectification side current and the differential value of the inversionside current, and if the differential asynchronous differential quantity is greater than a differential asynchronous differential relay constant value, judging that a fault occurs in the high-voltagedirect-current transmissi</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS GENERATION MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES PHYSICS SYSTEMS FOR STORING ELECTRIC ENERGY TESTING |
| title | High-voltage direct-current transmission line protection method and device for distinguishing internal and external faults of smoothing reactor |
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