CN110489604B - Analysis method and system for test measurement data of gas turbine - Google Patents
Analysis method and system for test measurement data of gas turbine Download PDFInfo
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Abstract
The application belongs to the technical field of gas turbine tests, and relates to a method and a system for analyzing measurement data of a gas turbine test, wherein the method comprises the steps of sequentially scanning character strings in the measurement data of the gas turbine test to generate an array A with n character strings; performing local traversal in the array A to obtain the position of a character string beginning with the initial letter of the measurement parameter symbol; determining the number of the corresponding acquisition points of the measurement parameters; and determining the data offset of the measurement parameters relative to the beginning of the initial letter of the measurement parameter symbol and traversing the array A, and obtaining the data of the corresponding acquisition points of all the measurement parameters. According to the method, the data analysis can be carried out on the text file of the test measurement data of the gas turbine, the measurement parameters are extracted, and the subsequent direct processing and processing of the data of the test measurement data of the gas turbine can be carried out.
Description
Technical Field
The application belongs to the technical field of gas turbine tests, and particularly relates to a method and a system for analyzing measurement data of a gas turbine test.
Background
The large amount of measured data collected during the gas turbine test is often recorded and stored in a plurality of format type text files, for example, a text file shown in fig. 1, which is a detailed record of all parameter data measured by the sensing part, and the data format of the text file is very complex as can be seen from the figure. On the other hand, the measured parameters often vary with the purpose of the gas turbine test, and these characteristics result in the inability of conventional software to parse these data text files when performing data processing analysis.
In the design process of the gas turbine, analysis of the measurement data is a very necessary and important work, and the primary work of data analysis is to analyze a large number of data text files with complex formats, otherwise, the data analysis work is not performed or is difficult to be performed deeply.
Disclosure of Invention
In order to solve one of the above problems, the present application provides a method and a system for analyzing test measurement data of a gas turbine, which can be generally used for analyzing text files of test data of a gas turbine in various formats.
The first aspect of the application provides a method for analyzing measurement data of a gas turbine test, comprising the following steps:
step S1, sequentially scanning character strings in test measurement data of a gas turbine to generate an array A with n character strings;
step S2, performing local traversal in the array A to obtain the position of a character string beginning with a measurement parameter symbol initial letter, wherein the local traversal refers to that for the character string beginning with the same measurement parameter symbol initial letter, the traversed data length at least can obtain two adjacent positions B (1) and B (2) in the array A, and the measurement parameter symbol initial letter is any one of 'P', 'T', 'C' or 'H';
s3, determining the number of the acquisition points corresponding to the measurement parameters;
s4, determining a data offset f of the measurement parameter relative to the beginning of the initial letter of the measurement parameter symbol;
and S5, traversing the array A, and acquiring data of the acquisition points corresponding to all the measurement parameters.
Preferably, the determining the number of the acquisition points corresponding to the measurement parameter includes:
and determining the number m=n/(B (2) -B (1)) of the acquisition points according to the length of the array A and the offset of two adjacent positions of the character string of the initial letter of the measurement parameter symbol.
Preferably, in step S5, the data of the measurement parameter corresponding to the kth acquisition point is:
Z(k)＝B(1)+(k-1)*(B(2)-B(1))+f，k＝1,2,……,m。
in a second aspect, the application provides a parsing system for gas turbine test measurement data, comprising:
the measuring data traversing module is used for scanning character strings in the measuring data of the gas turbine test in sequence to generate an array A with n character strings;
the measuring parameter data segment determining module is used for carrying out local traversal in the array A to obtain the position of a character string beginning with the initial letter of the measuring parameter symbol, wherein the local traversal refers to the character string beginning with the initial letter of the same measuring parameter symbol, the traversed data length at least can obtain two adjacent positions B (1) and B (2) in the array A, and the initial letter of the measuring parameter symbol is any one of P ', ' T ', ' C ' or ' H ';
the acquisition point determining module is used for determining the number of the acquisition points corresponding to the measurement parameters;
the data offset determining module is used for determining the data offset f of the initial letter of the measurement parameter relative to the measurement parameter symbol;
and the measurement parameter acquisition module is used for traversing the array A and acquiring data of all the measurement parameters corresponding to the acquisition points.
Preferably, the acquisition point determining module includes:
and the acquisition point calculation unit is used for determining the number m=n/(B (2) -B (1)) of the acquisition points according to the length of the array A and the offset of two adjacent positions of the character string of the initial character of the measurement parameter symbol.
Preferably, the measurement parameter acquisition module includes:
each measurement parameter obtaining unit is used for collecting the data of the kth collecting point corresponding to the measurement parameter according to the following formula:
Z(k)＝B(1)+(k-1)*(B(2)-B(1))+f，k＝1,2,,m。
the method can analyze the data of the text file of the test measurement data of the gas turbine, extract the measurement parameters, and directly process and process the subsequent data of the test measurement data of the gas turbine.
Drawings
FIG. 1 is a schematic representation of the partial content of a text file of measurement data according to the present application.
FIG. 2 is a flow chart of a preferred embodiment of the method of the present application for analyzing gas turbine test measurement data.
FIG. 3 is a schematic diagram of data analysis according to the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application become more apparent, the technical solutions in the embodiments of the present application will be described in more detail with reference to the accompanying drawings in the embodiments of the present application. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of the application. The embodiments described below by referring to the drawings are exemplary and intended to illustrate the present application and should not be construed as limiting the application. All other embodiments, based on the embodiments of the application, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the application. Embodiments of the present application will be described in detail below with reference to the accompanying drawings.
The application aims to provide a method and a system for analyzing measurement data of a gas turbine test, as shown in fig. 2, the application firstly provides a method for analyzing measurement data of a gas turbine test, which comprises the following steps:
step S1, sequentially scanning character strings in test measurement data of a gas turbine to generate an array A with n character strings;
step S2, performing local traversal in the array A to obtain the position of a character string beginning with a measurement parameter symbol initial letter, wherein the local traversal refers to that for the character string beginning with the same measurement parameter symbol initial letter, the traversed data length at least can obtain two adjacent positions B (1) and B (2) in the array A, and the measurement parameter symbol initial letter is any one of 'P', 'T', 'C' or 'H';
s3, determining the number of the acquisition points corresponding to the measurement parameters;
s4, determining a data offset f of the measurement parameter relative to the beginning of the initial letter of the measurement parameter symbol;
and S5, traversing the array A, and acquiring data of the acquisition points corresponding to all the measurement parameters.
In step S5, the collected data is stored through the array Z, and because the data in the array Z is completely the test data of the collection point corresponding to a certain measurement parameter, a data statistics table or a state diagram can be directly generated according to the array Z, it can be understood that the measurement collection point in the application can be a collection point with different spatial positions or a collection point with the same position at different time, in the latter case, a graph of a certain parameter of a certain point of the gas turbine changing with time can be directly generated according to the array Z, so as to obtain the change trend of the gas turbine with time, so as to perform subsequent visual analysis and design of data, including maintenance design, parameter correction, and the like.
The method is obtained by intensively researching a large number of gas turbine test measurement data text files, and the analysis finds that the data files have the following common characteristics and rules although the formats and the measurement parameters are different, and the data analysis of the text files can be realized through the common rules:
1) In a gas turbine primary test process, a measurement data acquisition system generally acquires data once in a fixed time period, and measurement parameters and recording formats of each data acquisition are consistent, so that relative positions of each measurement parameter symbol in a data text file and the corresponding data acquisition position in each data acquisition record are consistent, and the position interval is fixed in the whole data file.
2) In the general gas turbine test process of the same model, some keywords of each measured data acquisition record are fixed, the positions of each parameter symbol and corresponding data thereof can be calculated and identified through the keywords, the positions of all corresponding data are calculated according to the rule, and finally each parameter symbol and all corresponding data thereof are calculated and identified.
The principle of the text file data analysis algorithm (taking the parameter with the symbol of the PATM collected by a certain sensing part and the identification of the corresponding data as an example) will be described below by taking the data analysis of the text file of the test data of the gas turbine shown in FIG. 1 as an example:
step one, firstly, scanning all character strings in the file in turn, and finally generating a character string array A (see FIG. 3) with n 1, wherein the character string array A contains all test data information in the form of character strings.
And step two, the initial letters of the symbols of the measurement parameters recorded in the data file are basically ' P ', ' T ', ' C ', H ', and the like, and the symbols and the corresponding positions of all the measurement parameters in the data file can be identified by locally searching the front of the array A.
And thirdly, comparing and searching all the parameter symbols identified in the second step by taking the parameter symbol 'PATM' as a target, and further obtaining the position of the parameter symbol at the front part in the array A, wherein the position is marked as a group B, B (1) and B (2) are the positions of the parameter symbol PATM acquired by the measuring system 1 st and 2 nd times in the array A during the test, and B (1) +3 and B (2) +3 are the positions of the parameter PATM acquired by the measuring system 1 st and 2 nd times in the array A.
Step four, calculating the number m of acquisition points (namely the number of the numerical values of the parameter PATM) of the measurement system in the test process, wherein the calculation formula is as follows:
m＝n/(B(2)-B(1))(1)
fifthly, a position calculation formula of the parameter PATM value acquired by the test measurement system at the kth time in the array A is as follows:
Z(k)＝B(1)+(k-1)*(B(2)-B(1))+3，k＝1,2,……,m(2)
step six, the positions of all the values of the parameter PATM in the file in the array A can be obtained by the formulas (1) and (2), and then the array Z corresponding to all the values of the parameter PATM can be obtained.
In a second aspect, the present application provides an analysis system for gas turbine test measurement data for implementing the method, comprising:
the measuring data traversing module is used for scanning character strings in the measuring data of the gas turbine test in sequence to generate an array A with n character strings;
the measuring parameter data segment determining module is used for carrying out local traversal in the array A to obtain the position of a character string beginning with the initial letter of the measuring parameter symbol, wherein the local traversal refers to the character string beginning with the initial letter of the same measuring parameter symbol, the traversed data length at least can obtain two adjacent positions B (1) and B (2) in the array A, and the initial letter of the measuring parameter symbol is any one of P ', ' T ', ' C ' or ' H ';
the acquisition point determining module is used for determining the number of the acquisition points corresponding to the measurement parameters;
the data offset determining module is used for determining the data offset f of the initial letter of the measurement parameter relative to the measurement parameter symbol;
and the measurement parameter acquisition module is used for traversing the array A and acquiring data of all the measurement parameters corresponding to the acquisition points.
In some alternative embodiments, the acquisition point determination module includes:
and the acquisition point calculation unit is used for determining the number m=n/(B (2) -B (1)) of the acquisition points according to the length of the array A and the offset of two adjacent positions of the character string of the initial character of the measurement parameter symbol.
In some alternative embodiments, the measurement parameter acquisition module includes:
each measurement parameter obtaining unit is used for collecting the data of the kth collecting point corresponding to the measurement parameter according to the following formula:
Z(k)＝B(1)+(k-1)*(B(2)-B(1))+f，k＝1,2,……,m。
the method can analyze the data of the text file of the test measurement data of the gas turbine, extract the measurement parameters, and directly process and process the subsequent data of the test measurement data of the gas turbine.
The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present application should be included in the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (2)
1. A method for analyzing test measurement data of a gas turbine, comprising:
step S1, sequentially scanning character strings in test measurement data of a gas turbine to generate an array A with n character strings;
step S2, performing local traversal in the array A to obtain the position of a character string beginning with a measurement parameter symbol initial letter, wherein the local traversal refers to that for the character string beginning with the same measurement parameter symbol initial letter, the traversed data length at least can obtain two adjacent positions B (1) and B (2) in the array A, and the measurement parameter symbol initial letter is any one of 'P', 'T', 'C' or 'H';
s3, determining the number of the acquisition points corresponding to the measurement parameters;
s4, determining a data offset f of the measurement parameter relative to the beginning of the initial letter of the measurement parameter symbol;
step S5, traversing the array A to obtain data of the acquisition points corresponding to all the measurement parameters; the determining the number of the acquisition points corresponding to the measurement parameters comprises the following steps:
determining the number m=n/(B (2) -B (1)) of the acquisition points according to the length of the array A and the offset of two adjacent positions of the character string of the beginning of the initial letter of the measurement parameter symbol;
the data of the measurement parameters corresponding to the kth acquisition point are:
Z(k)=B(1)+(k-1)*(B(2)-B(1))+f ，k=1,2,…,m。
2. a system for analyzing test measurement data of a gas turbine, comprising:
the measuring data traversing module is used for scanning character strings in the measuring data of the gas turbine test in sequence to generate an array A with n character strings;
the measuring parameter data segment determining module is used for carrying out local traversal in the array A to obtain the position of a character string beginning with the initial letter of the measuring parameter symbol, wherein the local traversal refers to the character string beginning with the initial letter of the same measuring parameter symbol, the traversed data length at least can obtain two adjacent positions B (1) and B (2) in the array A, and the initial letter of the measuring parameter symbol is any one of P ', ' T ', ' C ' or ' H ';
the acquisition point determining module is used for determining the number of the acquisition points corresponding to the measurement parameters; the acquisition point determination module includes: the acquisition point calculation unit is used for determining the number m=n/(B (2) -B (1)) of acquisition points according to the length of the array A and the offset of two adjacent positions of the character string of the initial character of the measurement parameter symbol;
the data offset determining module is used for determining the data offset f of the initial letter of the measurement parameter relative to the measurement parameter symbol;
the measurement parameter acquisition module is used for traversing the array A and acquiring data of all the measurement parameters corresponding to the acquisition points, and comprises: each measurement parameter obtaining unit is used for collecting the data of the kth collecting point corresponding to the measurement parameter according to the following formula:
Z(k)=B(1)+(k-1)*(B(2)-B(1))+f ，k=1,2,……,m。
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| DE102017216666A1 (en) * | 2017-09-20 | 2019-03-21 | Dr. Johannes Heidenhain Gmbh | Position measuring device and method for operating a position measuring device |
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| CN104462029A (en) * | 2013-09-18 | 2015-03-25 | 北京新媒传信科技有限公司 | Method and system for rich text display in intelligent terminal |
| CN105426121A (en) * | 2015-10-30 | 2016-03-23 | 山东科技大学 | Method for storing measurement data of multiple ship-borne sensors together in real time |
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