1. A method for registering events in a wind power system, said method comprising:
mutually time synchronizing first and second data processors of said wind power system;
registering a first event in said first data processor;
registering a second event in said second data processor;
establishing a relative timing of said first and second events registered in said first and second data processors according to said time synchronization;
correlating said first and second events in the time domain based at least in part on said relative timing; and
determining whether said first and second events are related to a common triggering event based on a result of said correlation; and
controlling at least part of the wind power system based on the determination of whether said first and second events are related to the common triggering event.
2. The method of claim 1, wherein said first and second data processors are comprised in a wind turbine.
3. The method of claim 1, wherein said first and second data processors are distributed in a plurality of wind turbines.
4. The method of claim 1, wherein said first and second data processors include at least one wind turbine controller.
5. The method claim 1, wherein said time synchronization includes a synchronization to a master clock.
6. The method of claim 1, wherein each of said first and second data processors comprises a time synchronization device that is configured to establish the time synchronization.
7. The method of claim 1, wherein said time synchronization device synchronizes to a master clock and establishes a synchronized clock on the basis of said master clock and a local clock, and the local clock is comprised in or communicating with said time synchronization device.
8. The method of claim 1, wherein the wind power system includes a plurality of wind turbines, and the wind turbines comprise a local clock.
9. The method of claim 1, wherein said time synchronization is established on the basis of an internal clock of the wind power system, or on the basis of an external clock transmitted from an external time synchronization arrangement comprising a master clock.
10. The method of claim 1, wherein said time synchronization of said first and second data processors in the wind power system is established by using an existing communication network within the wind power system, a dedicated line, or an earth satellite system.
11. The method of claim 1, wherein the wind power system includes a wind turbine comprising said first data processor and a substation comprising said second data processor.
12. The method claim 1, wherein the wind power system is controlled at least partly by predictive control based on said time synchronization.
13. The method of claim 1, wherein event information is transmitted as time stamped events according to said time synchronization of said first and second data processors, said time stamped events are transmitted to an event information analyzer, and said event information analyzer analyses the event information on the basis of said time synchronization.
14. The method of claim 13, wherein said event information analyzer analyzes the event information on the basis of said time synchronization by establishment of a relative timing based on the receipt of the event information.
15. A method for analyzing events of or controlling at least part of a wind power system comprising first and second data processors, said method comprising:
mutually synchronizing said first and second data processors of said wind power system according to a synchronized time;
registering a first event in said first data processor;
registering a second event in said second data processor;
time stamping said first and second registered events;
correlating said first and second registered and time stamped events in the time domain to determine if said first and second registered and time stamped events are related to a common triggering event; and
controlling at least part of the wind power system based on said first and second registered and time stamped events.
16. The method of claim 15, wherein said time synchronization enables defining a set-point in a time domain, and said set-point is a global set-point common in respect of all synchronized data processors.
17. The method of claim 16, wherein said wind power system is at least partly controlled in relation to said set-point.
18. The method of claim 15, wherein said wind power system includes an earth satellite system receiver.
19. A wind power system comprising:
a master clock;
first and second data processors each including a slave clock;
means for mutually synchronizing said slave clock of each of said first and second data processors according to said master clock;
one or more sensors for registering one or more events occurring in said wind power system;
means for creating one or more event data based on said one or more registered events;
means for time stamping, in said first and second data processors, of said one or more event data, in accordance with said slave clock; and
means for analysing the said event based on said time stamped event data or means for controlling at least part of said wind power system based on said time stamped event data,
wherein said time stamped data in said first data processor is correlated with said time stamped data in said second data processor in the time domain to determine if said one or more events are related to a common triggering event.
20. The method of claim 13, wherein the accuracy of the time stamp of the time stamped event is better than 500 \u03bcs, or better than 200 \u03bcs, or better than 10 \u03bcs, or better than 2 \u03bcs.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. An information searching method, comprising the steps of:
extracting one or more non-content characteristics of a document from a document set;
analyzing the extracted non-content characteristics;
generating an optimizing tool based on analyzing results; and
optimizing a preliminary search result with the generated optimizing tool.
2. The information searching method as claimed in claim 1, wherein the non-content characteristics of a document include intrinsic characteristics of the document, external descriptions, and relationships between documents.
3. The information searching method as claimed in claim 1, wherein
the preliminary search result includes a result obtained by searching a predetermined data group with a search engine, or a result obtained by another optimizing tool,
the result obtained by searching the predetermined data group or by the other optimizing tool is a document sequence, and each document in the document sequence has a reliability value indicating a probability of the document being a target document.
4. The information searching method as claimed in claim 1, wherein the optimizing tool includes one of a classification-based optimizing tool, a time-based optimizing tool, and a document relationship-based optimizing tool.
5. The information searching method as claimed in claim 1, wherein
the step of optimizing includes the steps of:
selecting, from the preliminary search result, a resulting document sequence having relatively high reliability;
arranging the documents of the resulting document sequence in order of creation time;
grouping the documents arranged in order of creation time into plural groups;
calculating a sum of reliability values of documents of one of the groups to obtain and output a group reliability value, a maximum value and a minimum value of the reliability values of the documents of the one of the groups being regarded as a group action range;
adjusting the reliability values of the documents in the resulting document sequence; and
arranging the documents in descending order of the adjusted reliability values to obtain optimized results.
6. The information searching method as claimed in claim 5, wherein
the step of selecting includes the steps of:
if a number of the documents in the preliminary search result is less than N, returning the preliminary search result directly, and if the number of the documents in the preliminary search result is less than N+M, specifying a maximum number MAX of documents to be processed to be a number of output results, and if the number of the documents in the preliminary search result is equal to or greater than N+M, specifying the maximum number MAX of documents to be processed to be N+M, where N is the number of the output results, M is the maximum uncertainty of the number of the output results, and M<N;
calculating differences of the reliability values of every two documents from a (N\u2212M)-th document to a MAX-th document, and determining an order number of a document corresponding to a maximum difference; and
returning a first document to an X-th document.
7. The information searching method as claimed in claim 5, wherein
the step of grouping includes the steps of:
calculating differences of the creation times of every two input documents;
calculating an average AVG of all the differences of the creation times;
selecting documents having the creation time differences greater than a*AVG, where a is a parameter for controlling grouping granularity; and
grouping the documents with the selected documents as group boundaries.
8. The information searching method as claimed in claim 5, wherein
the step of adjusting includes the step of:
determining whether each of the documents in the preliminary search results is in group action ranges of one or more of the groups, and if the reliability value of the document is in the group action range of one of the groups, increasing the reliability value of the document by b*Rg, where b is a parameter for controlling adjustment magnitude of the document creation time on the preliminary search result, a maximum of b is not greater than 5% of an average reliability value of all the documents, and Rg represents the group reliability value of the group.
9. The information searching method as claimed in claim 1, wherein
the step of optimizing includes the steps of:
selecting, from the preliminary search result, a resulting document sequence having relatively high reliability;
calculating a distance from each of the documents in the preliminary search results to each document of the resulting document sequence;
adjusting the reliability values of the documents in the resulting document sequence; and
arranging the documents in descending order of the adjusted reliability values to obtain optimized results.
10. The information searching method as claimed in claim 9, wherein
the distance from each of the documents in the preliminary search results to the document of the resulting document sequence equals a sum of weights of sides passed through by a directional path between two documents,
the distance is infinite when there is no path between the document in the preliminary search results and the document in the resulting document sequence,
the distance from one document to itself is zero,
the distance L between the document in the preliminary search results and the document in the resulting document sequence is expressed by the following equation when there are plural paths between the two documents,
L=1((1L1)+(1L2)++(1LX))
where, L represents the distance between two documents, L1 represents the distance of a path 1, L2 represents the distance of a path 2, . . . LX represents the distance of a path X.
11. The information searching method as claimed in claim 9, wherein
said distance equals a sum of lengths of sides passed through by a non-directional path between two documents, and
the length of each side equals a product of a weight of the relationship between the two documents and a difference between the creation times of the two documents.
12. The information searching method as claimed in claim 9, wherein
the step of adjusting includes the step of:
determining the distance from each of the documents included the preliminary search results to each document of the resulting document sequence, and increasing the reliability value of the document included the preliminary search results by
b*Rd(1+L),
where b is a parameter, and the size of b controls adjustment magnitude of the distance between two documents on the preliminary search result, Rd represents the reliability values of the documents of the selected resulting document sequence, and L represents the distance from the document included in the preliminary search results to the document of the selected resulting document sequence.
13. An information searching device, comprising:
a non-content characteristics extractor configured to extract one or more non-content characteristics of a document from a document set;
an analyzer configured to analyze the extracted non-content characteristics and generate an optimizing tool based on analyzing results; and
an optimizer configured to optimize a preliminary search result with the generated optimizing tool.
14. The information searching device as claimed in claim 13, wherein the non-content characteristics of a document include intrinsic characteristics of the document, external descriptions, and relationships between documents.
15. The information searching device as claimed in claim 13, wherein
the preliminary search result includes a result obtained by searching a predetermined data group with a search engine, or a result obtained by another optimizing tool,
the result obtained by searching the predetermined data group or by the other optimizing tool is a document sequence, and each document in the document sequence has a reliability value indicating a probability of the document being a target document.
16. The information searching device as claimed in claim 13, wherein the optimizing tool includes one of a classification-based optimizing tool, a time-based optimizing tool, and a document relationship-based optimizing tool.
17. The information searching device as claimed in claim 13, wherein
the optimizer comprises:
a reliable result selector configured to select, from the preliminary search result, a resulting document sequence having relatively high reliability;
an arranging unit configured to arrange the documents of the resulting document sequence in order of creation time;
a grouping unit configured to group the documents arranged in order of creation time into plural groups;
a calculator configured to calculate a sum of reliability values of documents of one of the groups to obtain and output a group reliability value, a maximum value and a minimum value of the reliability values of the documents of the one of the groups being regarded as a group action range;
an adjusting unit configured to adjust the reliability values of the documents; and
an ordering unit configured to arrange the documents in descending order of the adjusted reliability values to obtain optimized results.
18. The information searching device as claimed in claim 13, wherein
the optimizer comprises:
a reliable result selector configured to select, from the preliminary search result, a resulting document sequence having relatively high reliability;
a distance calculator configured to calculate a distance from each of the documents to each document of the selected resulting document sequence;
an adjusting unit configured to adjust the reliability values of the documents; and
an ordering unit configured to arrange the documents in descending order of the adjusted reliability values to obtain optimized results.
19. The information searching method as claimed in claim 18, wherein
the distance from each of the documents in the preliminary search results to the document of the resulting document sequence equals a sum of weights of sides passed through by a directional path between two documents,
the distance is infinite when there is no path between the document in the preliminary search results and the document in the resulting document sequence,
the distance from one document to itself is zero,
the distance L between the document in the preliminary search results and the document in the resulting document sequence is expressed by the following equation when there are plural paths between the two documents,
L=1((1L1)+(1L2)++(1LX))
where, L represents the distance between the two documents, L1 represents the distance of a path 1, L1 represents the distance of a path 2, . . . LX represents the distance of a path X.
20. The information searching device as claimed in claim 18, wherein
said distance equals a sum of lengths of sides passed through by a non-directional path between the two documents, and
the length of each side equals a product of a weight of the relationship between the two documents and a difference between the creation times of the two documents.