http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-112326987-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01P3-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01P3-00 |
| filingDate | 2020-10-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-08-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-08-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-112326987-B |
| titleOfInvention | Offshore wind turbine non-contact impeller rotating speed monitoring method based on underwater acoustic signals |
| abstract | A non-contact impeller rotating speed monitoring method of an offshore wind turbine based on underwater acoustic signals relates to the technical field of wind power. The method comprises the steps of collecting underwater noise of an offshore wind turbine in an operation period close to the wind turbine in real time by using a hydrophone, extracting line spectrum frequency of the underwater noise in the operation period by using a stochastic resonance method, and then inverting the rotating speed of an impeller of the wind turbine by using the frequency. And comparing a preset threshold value, and when the rotating speed of the impeller is found to be abnormal, giving an alarm by the system and stopping the fan to run so as to ensure the safety of the fan. The non-contact impeller rotating speed monitoring method avoids the risks caused by abrasion, falling and the like of the existing monitoring instrument due to long-time direct contact with the fan, can effectively monitor the rotating speed of the impeller, can track and monitor the real-time change of underwater noise in the operation period of the offshore wind farm, provides key parameters for the influence evaluation of marine environmental noise, and has the advantages of simplicity, low cost, convenience in arrangement and the like. |
| priorityDate | 2020-10-29-04:00^^<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/compound/CID962 http://rdf.ncbi.nlm.nih.gov/pubchem/substance/SID419512635 |
Total number of triples: 12.