http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CA-1212147-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_a2b6b2437a8e5795026807426d5a4b72 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H02H7-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01R31-088 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H02H7-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01R31-08 |
| filingDate | 1983-09-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1986-09-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9cd1519cc3ef8524ea38f18731fc4fcd |
| publicationDate | 1986-09-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CA-1212147-A |
| titleOfInvention | Method and device for locating a fault point on a three-phase power transmission line |
| abstract | ABSTRACT OF THE DISCLOSURE A fault point in a line section of a three-phase power transmission line, is determined by measuring currents and voltages at a measuring point arranged adjac-ent the near end of the section. The type of fault (single-phase/multi-phase ground fault/phase-to-phase fault) is determined and the parameters in a quadratic equation are determined using the relative distance (n) from the measuring point to the fault point as a variable. The equation is derived in advance from the electrical relationships between the complex values of the line impedance, the source impedances of the networks located ahead of and behind the fault, and measured currents and voltages following elimination of the fault resistance and possible zero sequence components. The parameters in the equation are determined by the type of the fault, by the measured voltages and currents and by said imped-ances. The equation is solved directly by means of a numerical square root method. When calculating the para-meters, the fundamental frequency components of the measured values are used,which components are obtained by digital filtering of the measured values. The invention also relates to a device for carrying out the method. |
| priorityDate | 1982-09-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 24.