http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-114977128-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_e0eec63ebec71857cc99e9d98c68ca96 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H02J2203-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02E60-60 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H02H7-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H02J3-36 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H02H7-263 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H02J3-36 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H02H7-26 |
| filingDate | 2022-06-21^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5acb815f1a08cbc21fd0be2ef42a27d9 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_fa62a6693b8bd1df1e8f7c66ce6bf842 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_fdd94ef4ef676e7ad5f817e5c42f1a03 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e2db74a94bcdd9df26987e128667a81c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_eda8b101d252f46829b07ff9b2eaa0d1 |
| publicationDate | 2022-08-30^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-114977128-A |
| titleOfInvention | Method and system for longitudinal protection of flexible line based on inductance parameters |
| abstract | The invention relates to a flexible line longitudinal protection method and system based on inductance parameters, belongs to the technical field of power system relay protection, and solves the problem that the AC line protection performance of the existing flexible direct current system decreases, causing refusal to operate and malfunction. . The method includes collecting data after a fault occurs, including: the voltage reference value of the AC side of the converter station, the voltage of the DC side, the AC current and the AC voltage on both sides of the AC lines M and N; according to the data, calculate the AC lines M, N Inductance value on both sides; according to the inductance value on both sides of the AC line, calculate the inductance error coefficient on both sides of the AC line M and N; judge whether the inductance error coefficient on both sides of the AC line M and N meets the fault identification criterion, if it meets the , then it is determined that the AC line has an internal fault, and the AC line protection is activated; otherwise, it is determined that the AC line has an external fault, and the AC line protection does not act. Accurate and fast fault identification is achieved. |
| priorityDate | 2022-06-21^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
| Predicate | Subject |
|---|---|
| isDiscussedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/substance/SID419554059 http://rdf.ncbi.nlm.nih.gov/pubchem/compound/CID4781 |
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