CN105716664A - Cable state monitoring multiparameter correlation analysis method based on per-unit algorithm - Google Patents
Cable state monitoring multiparameter correlation analysis method based on per-unit algorithm Download PDFInfo
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Abstract
The invention discloses a cable state monitoring multiparameter correlation analysis method based on the per-unit algorithm.The method comprises the following specific steps that an information acquisition unit conducts data acquisition processing on cable running state parameters and sends the processing result out; a multiparameter monitoring unit receives detected cable running state parameters, then conducts per-unit algorithm processing and stores the processing result; a multiparameter infusion model is established according to per-unit algorithm processing data; state model fitting is conducted on cables of different types through right setting in combination with historical data, so that state maintenance information is obtained.According to the cable state monitoring multiparameter correlation analysis method, multiparameter values are unified through the per-unit algorithm, the multiparameter correlation analysis model for cable state monitoring is established, related conclusion of state maintenance is directly given, the problems existing between a single parameter or system of an on-line monitoring system and comprehensive monitoring for a long time, monitoring parameters as well as the way of conducting analysis and application in time and the like are solved, and great significance is achieved for safe and stable operation of a cable line.
Description
Technical field
The invention belongs to cable running status comprehensive monitoring technical field, relate to a kind of cable status monitoring multiparameter association analysis method.
Background technology
Cable run is the important component part of transmission line of electricity, development along with urbanization, cable run gets more and more, the monitoring running state of cable run is related to the safe and stable reliability service of power circuit, electricity consumption reliability, the safety of power supply enterprise and economy tool are of great significance.
Many achievements are had been achieved for both at home and abroad in the on-line monitoring to cable transmission line, such as (1) (2012 the 9th time, whole nation power cable operating experience exchanging meeting collections of thesis " high tension cable and tunnel intelligent online monitoring system are studied and application ") cable run optical fiber temperature measurement system: optical fiber temperature measurement system DTS is distributed, successional temp measuring system, temperature conditions and the temperature curve of high tension cable every meter can be obtained, point sensor leak source can be prevented effectively from, improve the performance of fire detecting system, reduce and fail to report and report by mistake.(2) the cable cover(ing) insulating monitoring (with 1): cable cover(ing) insulation is carried out on-line monitoring and can report the damaged condition of cable jacket at any time, it is prevented that major insulation is subject to fatal damage, even can immediately appreciate that the pilferage of earth lead.Monitor jacket insulation by monitoring protective metal shell earth current continuously, be do not change connection at present, do not affect the unique feasible method of operation.(3) (with 1) cable local discharge monitoring: after cable and adnexa are progressively aging, electric branch can be produced, electric branch is along with shelf depreciation, start to produce shelf depreciation to puncturing, process is likely to up to several years, therefore detect shelf depreciation and position, being the good method avoiding cable breakdown.(4) state-detection of (2012.01 phases " east china electric power " high tension cable state inspection study on the efficiency) high tension cable is owing to being subject to the impact of design, construction, running environment, mainly include offline inspection and 2 kinds of methods of on-line checking, can be divided into patrol and examine, routine test, diagnostic test, wherein diagnostic test project includes office and puts on-line monitoring, dielectric loss on-line monitoring etc..
Although the existing on-line monitoring aspect to cable transmission line obtains many achievements, but there is also deficiency simultaneously, it is embodied in the detection to cable only monitoring or a few parameters of single parameter is monitored and is judged, relatedness is not had between parameters, functional defect face, do not rise to the height of the repair based on condition of component of multiparameter association analysis, comprehensive analysis and judgement method, later data analysis is had certain difficulty.
Summary of the invention
It is an object of the invention to provide a kind of cable status based on standardization algorithm and monitor multiparameter association analysis method, solve the multiparameter related question existed in prior art.
For solving the problems referred to above, the technical solution used in the present invention is:
A kind of cable status based on standardization algorithm monitors multiparameter association analysis method, specifically includes following steps:
Step 101, cable running state parameter is carried out data acquisition process and sends out by information acquisition unit；
Step 102, multi-parameter monitoring unit receives the laggard row standardization algorithm process of cable running state parameter of information acquisition unit detection and stores；
Step 103, sets up multi-parameter fusion model according to standardization algorithm process data；
Step 104, arranges by weighing, in conjunction with historical data, different types of cable is carried out state model matching and obtain the information of repair based on condition of component.
Further, described information acquisition unit includes the sets of temperature sensors for collecting temperature information, checking for grounded current module, infrared image acquisition module, ultraviolet image acquisition module, it is arranged on the local discharge signal detection module on cable and for measuring the DC component detection module of cable DC component stray magnetic field strength, wherein the analogue signal of detection is converted to digital signal by analog-digital converter and is sent in multi-parameter monitoring unit by sets of temperature sensors, process data are sent to multi-parameter monitoring unit after being processed by power frequency and multiple harmonic processing module by checking for grounded current module, infrared image acquisition module and ultraviolet image acquisition module carry out processing and result being sent to multi-parameter monitoring unit respectively through infrared image digital module and ultraviolet image digital module, local discharge signal detection module and DC component detection module are processed by monitoring model and are sent to multi-parameter monitoring unit.
Further, described sets of temperature sensors includes the tunnel temperature sensor of the cable temperature sensor being arranged on cable connector position and the measurement air themperature being arranged on tunnel internal；Described cable emphasis temperature includes cable connector position temperature and tunnel internal air themperature.
Further, described cable running state parameter includes cable emphasis temperature, earth current, infrared image, ultraviolet image, local discharge signal and DC component stray magnetic field.
Further, step 102 specifically includes: the data information memory that information acquisition unit is transmitted by multi-parameter monitoring unit and is recorded in data base, the data message transmitted is carried out standardization process simultaneously and obtains perunit value, then perunit value is sent in data model libraries and stores.
Further, described standardization algorithm, particularly as follows: cable running state parameter is acquired by information acquisition unit according to timing node, in certain period of time, the parameters data gathered are averaged, then ask for the supplemental characteristic of collection and the ratio of meansigma methods, the supplemental characteristic of collection is returned " 1 " form perunit value.
Further, also include, before information acquisition unit gathers data, the cable body parameter of typing different size in data base in advance.
Further, step 103 specifically includes: respectively cable emphasis temperature, earth current, infrared image, ultraviolet image, local discharge signal and DC component stray magnetic field parameter are set up monitoring model according to perunit value, and each monitoring model is fused to multi-parameter fusion model.
Further, step 104 specifically includes: arrange the cable body parameter of parameter and monitoring according to power, and contrast historical data and multi-parameter fusion models fitting curve condition judge that whether cable running status is normal, and export fault-signal.
Relative to prior art, the method have the advantages that
A kind of cable status based on standardization algorithm provided by the invention monitors multiparameter association analysis method, by information acquisition unit, the cable running state parameter of collection is sent to multi-parameter monitoring unit, enter data base on the one hand and carry out storage record, additionally carry out data fitting by standardization method simultaneously, enter Mathematic Model Library；Data based on body parameter must first in input database, the typing of weight parameter and to revise be that whole process in model analysis carries out；Multiparameter numerical value is unified by standardization algorithm, create cable status monitoring multiparameter relation analysis model, the related conclusions of repair based on condition of component is obtained by the setting weighed, solve the problem of on-line monitoring system single parameter for a long time or system and comprehensive monitoring, monitoring parameter and how to analyze use problem etc. in time, the safe and stable operation of cable run being had and is of great significance.
Accompanying drawing explanation
Fig. 1 is that a kind of cable status based on standardization algorithm of the present invention monitors multiparameter association analysis method flow chart；
Fig. 2 is that a kind of cable status based on standardization algorithm of the present invention monitors the model structure figure that multiparameter association analysis method uses；
Fig. 3 is the cable running state parameter curve chart of detection in the table 1 that the present invention mentions；
Fig. 4 is the cable running status curve chart in the table 3 that the present invention mentions after standardization process.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is further detailed.
A kind of cable status based on standardization algorithm provided by the invention monitors multiparameter association analysis method, by information acquisition unit, the cable running state parameter of collection is sent to multi-parameter monitoring unit, enter data base on the one hand and carry out storage record, additionally carry out data fitting by standardization method simultaneously, enter Mathematic Model Library；Data based on body parameter must first in input database, the typing of weight parameter and to revise be that whole process in model analysis carries out；Multiparameter numerical value is unified by standardization algorithm, create cable status monitoring multiparameter relation analysis model, the related conclusions of repair based on condition of component is obtained by the setting weighed, solve the problem of on-line monitoring system single parameter for a long time or system and comprehensive monitoring, monitoring parameter and how to analyze use problem etc. in time, the safe and stable operation of cable run being had and is of great significance.
Referring to Fig. 1, a kind of cable status based on standardization algorithm proposed for the present invention monitors multiparameter association analysis method flow chart.
As it is shown in figure 1, a kind of cable status based on standardization algorithm monitors multiparameter association analysis method, specifically include following steps:
Step 101, cable running state parameter is carried out data acquisition process and sends out by information acquisition unit；
In a step 101, information acquisition unit includes the sets of temperature sensors for collecting temperature information, checking for grounded current module, infrared image acquisition module, ultraviolet image acquisition module, it is arranged on the local discharge signal detection module on cable and for measuring the DC component detection module of cable DC component stray magnetic field strength, wherein the analogue signal of detection is converted to digital signal by analog-digital converter and is sent in multi-parameter monitoring unit by sets of temperature sensors, process data are sent to multi-parameter monitoring unit after being processed by power frequency and multiple harmonic processing module by checking for grounded current module, infrared image acquisition module and ultraviolet image acquisition module carry out processing and result being sent to multi-parameter monitoring unit respectively through infrared image digital module and ultraviolet image digital module, local discharge signal detection module and DC component detection module are processed by monitoring model and are sent to multi-parameter monitoring unit.
Further, sets of temperature sensors includes the tunnel temperature sensor of the cable temperature sensor being arranged on cable connector position and the measurement air themperature being arranged on tunnel internal.
In a step 101, cable running state parameter includes cable emphasis position temperature, earth current, infrared image, ultraviolet image, local discharge signal and DC component stray magnetic field.
Step 102, multi-parameter monitoring unit receives the laggard row standardization algorithm process of cable running state parameter of detection and stores；
In a step 102, multi-parameter monitoring unit receives the laggard row standardization algorithm process of cable running state parameter of detection and stores, specifically include: the data information memory that information acquisition unit is transmitted by multi-parameter monitoring unit and is recorded in data base, the data message transmitted is carried out standardization process simultaneously and obtains perunit value, then perunit value is sent in data model libraries and stores.
In the embodiment of the present invention, standardization algorithm, particularly as follows: cable running state parameter is acquired by information acquisition unit according to timing node, in certain period of time, the parameters data gathered are averaged, then ask for the supplemental characteristic of collection and the ratio of meansigma methods, the supplemental characteristic of collection is returned " 1 " form perunit value.The concrete steps of standardization algorithm are illustrated: table 1 is the cable running state parameter of the monitoring within a period of time below according to the cable running state parameter monitored:
Table 1
Calculate the meansigma methods of parameters: referring to table 2.
Table 2
| Cable operating temperature (DEG C) | Earth current (mA) | Tunnel air temperature (DEG C) | Load current (A) | |
| Meansigma methods | 29.5 | 1.166666667 | 15.5 | 155.3333333 |
In computer chart 1, data obtain table 3 with the ratio of the meansigma methods of corresponding parameter；
Table 3
| Cable operating temperature (DEG C) | Earth current (mA) | Tunnel air temperature (DEG C) | Load current (A) | |
| 1:00 | 0.847457627 | 0.857142857 | 0.967741935 | 0.643776824 |
| 2:00 | 0.847457627 | 0.857142857 | 0.967741935 | 0.643776824 |
| 3:00 | 0.813559322 | 0.857142857 | 0.903225806 | 0.637339056 |
| 4:00 | 0.881355932 | 0.857142857 | 0.967741935 | 0.637339056 |
| 5:00 | 0.881355932 | 1.714285714 | 0.967741935 | 0.630901288 |
| 6:00 | 0.847457627 | 0.857142857 | 0.967741935 | 0.637339056 |
| 7:00 | 0.983050847 | 0.857142857 | 1.032258065 | 0.701716738 |
| 8:00 | 1.118644068 | 1.714285714 | 1.032258065 | 1.287553648 |
| 9:00 | 1.186440678 | 0.857142857 | 1.032258065 | 1.35193133 |
| 10:00 | 1.186440678 | 0.857142857 | 1.096774194 | 1.60944206 |
| 11:00 | 1.220338983 | 0.857142857 | 1.032258065 | 1.60944206 |
| 12:00 | 1.186440678 | 0.857142857 | 1.032258065 | 1.60944206 |
Namely table 3 is the data after cable running state parameter standardization.
Referring to Fig. 3, for the cable running state parameter curve chart of detection in table 1.From Fig. 3, owing to supplemental characteristic difference is bigger, it is impossible to react the relation between cable operating temperature, earth current, tunnel air thermometer load current accurately, it is impossible to judge cable running status situation.
Referring to Fig. 4, cable running status curve chart after processing for standardization in table 3, data in his-and-hers watches 1 carry out standardization process, cable running state parameter in table 1 returns " 1 " change to process, make parameters be on same standard coordinate to compare, improve the relatedness of data, and parameter is occurred, and during fluctuation, energy effecting reaction is in the graph, it is simple to post analysis and process.
By cable running state parameter is carried out standardization process so that the data after standardization will not be submerged because of size of data in the graph；Parameters is after standardization processes, and schoolmate's display relatedness is good, and the model that the data after being processed by standardization are set up is easy to find rule.
Further, also include, before information acquisition unit gathers data, the cable body parameter of typing different size in data base in advance.Cable body parameter is the specifications and models of cable, and including the making material of cable, size, the cable running state parameter of different size cable is different, and by arranging the cable body parameter of different size, the data fitting for the later stage processes offer foundation.
Step 103, sets up multi-parameter fusion model according to standardization algorithm process data；
In step 103, described set up multi-parameter fusion model according to standardization algorithm process data, specifically include: respectively cable emphasis temperature, earth current, infrared image, ultraviolet image, local discharge signal and DC component stray magnetic field parameter are set up monitoring model according to perunit value, and each monitoring model is fused to multi-parameter fusion model.
Information acquisition unit Monitoring Data enters multi-parameter monitoring unit, enters data base on the one hand and carries out storage record, additionally carries out data fitting by standardization method simultaneously, enter Mathematic Model Library；Data based on body parameter must first in input database, the typing of weight parameter and to revise be that whole process in model analysis carries out；
Cable temperature monitoring model: cable fault great majority occur at joint area, therefore the cable temperature parameter monitoring of the present invention is selected by joint location, parameter, air themperature monitoring parameter and conductor parameter, the temperature foh temperature monitoring model to cable emphasis position is monitored in conjunction with load current.
Earth current monitoring model: earth current has reacted the running status of cable, wherein monitors size and the situation of change of power frequency and multiple harmonic, in conjunction with load current monitoring, air themperature humidity detection and conductor parameter, sets up earth current monitoring model；
Infrared image monitoring model: infrared image can monitor the temperature anomaly situation on a face；By the comparison of the digitized of infrared image and historical data, in conjunction with load current monitoring, air themperature monitoring, set up infrared image monitoring model；
Ultraviolet image monitoring model: ultraviolet image monitoring can analyze the abnormal conditions judging cable connector place, by the comparison of the digitized of ultraviolet image and historical data, in conjunction with load current monitoring, air themperature monitoring, sets up ultraviolet image monitoring model；
Monitoring model is put in office: cable partial discharge monitoring can directly reflect the insulation situation of cable, directly reflects cable partial discharge situation by monitoring the big I of pulse current, and in conjunction with load current monitoring, air themperature monitoring, monitoring model is put in foundation office；
The monitoring model of DC component and stray magnetic field: by the monitoring to DC component and stray magnetic field, in conjunction with the monitoring of load current monitoring, air themperature humidity, set up the monitoring model of DC component and stray magnetic field；
Step 104, arranges by weighing, in conjunction with historical data, different types of cable is carried out state model matching and obtain the information of repair based on condition of component.
At step 104, described by weighing setting, in conjunction with historical data, different types of cable is carried out state model matching and obtain the information of repair based on condition of component, specifically include: the cable body parameter of parameter and monitoring is set according to power, contrast historical data and multi-parameter fusion models fitting curve condition judge that whether cable running status is normal, and export fault-signal.
The present invention passes through standardization algorithm, unified for the numerical value of multiparameter near " 1 ", this addresses the problem the same table comparison of multiparameter and correlation analysis；By multi-parameter fusion technology, multiparameter is associated with in a mathematical model, the intrinsic parameter of cable body, the multiple parameters real-time monitored and the weights that can arrange organically is attached in model, is carried out curve fitting by time shaft；By the setting of the power of multiple parameters, operating different types of cable can be carried out the analysis of state model；By the comprehensive descision to relevant parameter, directly give the relevant information of repair based on condition of component, it is to avoid current most on-line monitoring system data post manual analyses not in time, the problem such as not comprehensive, the output solving monitoring parameter uses problem.
Above in conjunction with accompanying drawing, the preferred embodiment for the present invention is explained in detail, but the invention is not restricted to above-mentioned embodiment, in the ken that those of ordinary skill in the art possess, it is also possible to make a variety of changes under the premise without departing from present inventive concept.Many other can be made without departing from the spirit and scope of the present invention to change and remodeling.Should be appreciated that and the invention is not restricted to specific embodiment, the scope of the invention limits.
Claims (9)
1. the cable status based on standardization algorithm monitors multiparameter association analysis method, it is characterised in that specifically include following steps:
Step 101, cable running state parameter is carried out data acquisition process and sends out by information acquisition unit；
Step 102, multi-parameter monitoring unit receives the laggard row standardization algorithm process of cable running state parameter of information acquisition unit detection and stores；
Step 103, sets up multi-parameter fusion model according to standardization algorithm process data；
Step 104, arranges by weighing, in conjunction with historical data, different types of cable is carried out state model matching and obtain the information of repair based on condition of component.
2. a kind of cable status based on standardization algorithm according to claim 1 monitors multiparameter association analysis method, it is characterized in that, described information acquisition unit includes the sets of temperature sensors for collecting temperature information, checking for grounded current module, infrared image acquisition module, ultraviolet image acquisition module, it is arranged on the local discharge signal detection module on cable and for measuring the DC component detection module of cable DC component stray magnetic field strength, wherein the analogue signal of detection is converted to digital signal by analog-digital converter and is sent in multi-parameter monitoring unit by sets of temperature sensors, process data are sent to multi-parameter monitoring unit after being processed by power frequency and multiple harmonic processing module by checking for grounded current module, infrared image acquisition module and ultraviolet image acquisition module carry out processing and result being sent to multi-parameter monitoring unit respectively through infrared image digital module and ultraviolet image digital module, local discharge signal detection module and DC component detection module are processed by monitoring model and are sent to multi-parameter monitoring unit.
3. a kind of cable status based on standardization algorithm according to claim 2 monitors multiparameter association analysis method, it is characterized in that, described sets of temperature sensors includes the tunnel temperature sensor of the cable temperature sensor being arranged on cable connector position and the measurement air themperature being arranged on tunnel internal.
4. a kind of cable status based on standardization algorithm according to claim 1 monitors multiparameter association analysis method, it is characterized in that, described cable running state parameter includes cable emphasis temperature, earth current, infrared image, ultraviolet image, local discharge signal and DC component stray magnetic field；Described cable emphasis temperature includes cable connector position temperature and tunnel internal air themperature.
5. a kind of cable status based on standardization algorithm according to claim 1 monitors multiparameter association analysis method, it is characterized in that, step 102 specifically includes: the data information memory that information acquisition unit is transmitted by multi-parameter monitoring unit and is recorded in data base, the data message transmitted is carried out standardization process simultaneously and obtains perunit value, then perunit value is sent in data model libraries and stores.
6. a kind of cable status based on standardization algorithm according to claim 5 monitors multiparameter association analysis method, it is characterized in that, described standardization algorithm, particularly as follows: cable running state parameter is acquired by information acquisition unit according to timing node, in certain period of time, the parameters data gathered are averaged, then ask for the supplemental characteristic of collection and the ratio of meansigma methods, the supplemental characteristic of collection is returned " 1 " form perunit value.
7. a kind of cable status based on standardization algorithm according to claim 1 monitors multiparameter association analysis method, it is characterised in that also include, before information acquisition unit gathers data, and the cable body parameter of typing different size in data base in advance.
8. a kind of cable status based on standardization algorithm according to claim 1 monitors multiparameter association analysis method, it is characterized in that, step 103 specifically includes: respectively cable emphasis temperature, earth current, infrared image, ultraviolet image, local discharge signal and DC component stray magnetic field parameter are set up monitoring model according to perunit value, and each monitoring model is fused to multi-parameter fusion model.
9. a kind of cable status based on standardization algorithm according to claim 1 monitors multiparameter association analysis method, it is characterized in that, step 104 specifically includes: arrange the cable body parameter of parameter and monitoring according to power, contrast historical data and multi-parameter fusion models fitting curve condition judge that whether cable running status is normal, and export fault-signal.
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