| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_9bf9b71a804bee6bb86d4a9f48513003
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_36c87c73352ca4f1416e17aa2e53f6ed
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_beedf751bb47e4b8786ae07d29f84615
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c2dfa9f02bbbd261e6ad36edf5194bb0 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01R31-085
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01R31-52
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01R19-0092 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H02H3-265
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01R31-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H02H3-081 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01R31-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H02H3-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H02H3-26 |
| filingDate |
2011-10-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_31bcbdbe8780e540aae3906c41e1789e
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_22caf7688e08672f08abc8af2f60536b
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_57a6d0ed32de163fbf3632cd60ecbf24 |
| publicationDate |
2012-04-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
WO-2012049294-A1 |
| titleOfInvention |
Fault direction parameter indicator device using only current and related methods |
| abstract |
A method of determining a fault direction parameter of a fault on an AC transmission line 10 of a power distribution system 1 relative to a measurement location 12 of the transmission line 10 is described. The method comprises: measuring by a measurement unit 20 a time- dependent AC current of the transmission line 10 at the measurement location 12, thereby obtaining time-domain current data 80 indicative of the measured current; the measurement unit 20 comprising a current sensor for measuring the current at the measurement location 12 of the transmission line 10 but no voltage sensor; transmitting the current data to a decision logic section 36; obtaining a fault time 81 of the fault on the AC transmission line 10; identifying a first time tl and a second time t2 by identifying a periodically re-occurring feature of the current data 80, such that the fault time 81 is between the first time tl and the second time t2, wherein the periodically re-occurring feature is selected from the group consisting of a zero-crossing, a maximum, a minimum, a highest gradient of the current data; extracting, from the current data 80, an offset indicative parameter 82; 86, 87 indicative of a time offset 8Γ of the current at the fault time 81 wherein the offset indicative parameter 82 is a time interval between the first time t1 and the second time t2; calculating an offset direction parameter by comparing the offset indicative parameter 82; 86, 87 to a non-offset indicative parameter 84; and establishing the fault direction parameter based on the calculated offset direction parameter. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102830331-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102830330-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102721900-B
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102721900-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2015048841-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109672151-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-103926472-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9442152-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102830329-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-113049914-A |
| priorityDate |
2010-10-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |