CN103106341A - Method and system capable of intelligently analyzing direct current protection accident - Google Patents

Abstract

The invention discloses a method and a system capable of intelligently analyzing a direct current protection accident. The method capable of intelligently analyzing the direct current protection accident comprises the following steps: leading in a signal file and a recorded wave file when the accident happens; analyzing data in the recorded wave file as a format which can be identified by a computer; screening all motion signals and selecting a protection type of a motion; and conducting intelligent analysis, automatically abstracting related recorded wave data according to the criteria which is given in advance, and analyzing whether the process of protective motions meets the design expectation. When a data section meets the criteria, a mode of automatic screen shot is adopted by a system to generate an accident analysis report. By means of the method and the system capable of intelligently analyzing the direct current protection accident, ability of fault feature identification capacity of first-line personnel can be greatly enhanced, and processing efficiency of the direct current protection accident of site personnel can be effectively improved.

Description

A kind of direct current protecting accident intelligent analysis method and system

Technical field

The present invention relates to HVDC (High Voltage Direct Current) transmission system, in particular a kind of direct current protecting accident intelligent analysis method and system.

Background technology

In the face of know-why is complicated, broad covered area, the relay protection accident that the frequency of occurrences is high, how the Fast Identification Accident Characteristic, in time locate the trouble spot, and recover as early as possible faulty equipment and normally move, be current direct current transportation one a line production work difficult problem in the urgent need to address.

Find by literature search; domestic and international research majority to direct current protecting is the research of single protection algorithm, principle at present; almost do not relate to the correlative study of high voltage direct current protection exception automatic analysis method, and the just phoenix feathers and unicorn horns especially that can be simultaneously the accident treatment technology under Siemens TDC, Nan Rui PCS-9550, three kinds of DC protection systems of Siemens SIMADYN D be carried out complete research.

For the direct current protecting accident that the scene occurs, be accompanied by a series of accident alarm signal (being called for short SER) and failure wave-recording signal (being called for short TFR), the quantity of information that these signals comprise is very abundant.A general trip accident, alarm signal reaches the hundreds of bar, but real to our useful signal, only has more than 10 bars; And Fault Recorder Information is just more, in a failure wave-recording file cloudlike wide extra-high voltage, has just comprised the fault datas such as up to ten thousand electric currents, voltage, utmost point control, protection switch amount.In traditional accident treatment process, can only rely on manually and screen, find out the SER relevant with fault analysis and TFR, waste time and energy, and easily because analyst's experience difference causes the inaccurate of analysis result.

Therefore, prior art awaits further developing and improving.

Summary of the invention

The object of the present invention is to provide a kind of direct current protecting accident intelligent analysis method and system, be intended to solve the problem that existing direct current protecting accident does not have to realize Intelligent treatment.

Technical scheme of the present invention is as follows:

A kind of direct current protecting accident intelligent analysis method, it comprises the following steps:

Step 1: the signal file and the recorded wave file that import fault moment;

Step 2: be the discernible form of computing machine with the Data Analysis in recorded wave file;

Step 3: the everything signal is screened, choose the protection type of action;

Step 4: carry out intellectual analysis, according to criterion given in advance, automatically extract relevant recorder data; and analyze and protect course of action whether to meet expected design, for the data segment that satisfies criterion, system adopts the mode of automatic sectional drawing; the industrial accident analysis report is pointed out possible trouble spot.

Described direct current protecting accident intelligent analysis method wherein, is that at first the discernible form of computing machine is converted into data electrical power system transient exchanges data common format with the Data Analysis in recorded wave file.

Described direct current protecting accident intelligent analysis method wherein, is that at first the discernible form of computing machine is converted into data the Excel form with the Data Analysis in recorded wave file.

Described direct current protecting accident intelligent analysis method wherein, screens the everything signal and has adopted the multiplex screening method, specifically comprises the following steps:

Step 31: protection title screening;

Step 32: action consequence keyword search;

Step 33: according to protection criterion locking recorder data.

Described direct current protecting accident intelligent analysis method, wherein, the concrete steps that system carries out intellectual analysis comprise:

Step 41: system finds out corresponding criterial equation according to drawing the protection action message, and it is converted into the form that calculates function identification;

Step 42: system has the data volume of special computing to process to some, individual quantities is converted into the polynary amount that needs in criterion;

Step 43: system begins to record ripple scanning, and the result according to screening scans the recorder data of using, to find the record wave band that meets operating criterion;

Step 44: recorder data and criterion that system will scan out compare, and make and whether protect the conclusion of correct operation.

Described direct current protecting accident intelligent analysis method, wherein, the method for criterial equation is converted into described in step 41 being calculated the form of function identification is divided into: equation standardization and equation are resolved two processes.

Described direct current protecting accident intelligent analysis method, wherein, system has the data volume of special computing to process specifically to some to comprise: carry out effective value and calculate, carry out the voltage jump amount and calculate, carry out the effective value of alternating current and calculate.

Described direct current protecting accident intelligent analysis method; wherein; the concrete grammar that ripple scanning is recorded by system is the analysis result according to the SER signal; first find out calculative criterion; find corresponding switching value title according to this criterion again, this switching value of inquiry place passage in recorded wave file, and the moment of finding switching value to change; and take this moment as starting point, relevant analog quantity channel is scanned.

A kind of direct current protecting accident intelligent analysis system wherein, comprising:

Transmission module on the signal file of importing fault moment and the recorder data of recorded wave file;

Signal file and recorded wave file that identification imports are text formatting or non-textual format, if text formatting is inputted data the SER signal analyse block and is screened, if non-textual format, protection system and protection denomination of dive load module are activated, and require the recorder data identification module of the title of active input protection system and protection action;

The protection system of the title of input protection system and protection action and protection denomination of dive load module;

Screen, filter out the SER signal analyse block of protection action;

Extract the protection denomination of dive extraction module of their title from the protection action that filters out;

First data format is converted to the data layout of the unified identification of computing machine, then the protection name query of the protection title of taking out according to automatic lifting or initiatively input go out this protection action criterion Data Analysis and screen module;

Find by record ripple scanning the record wave band that meets operating criterion, and compare in the criterion with the protection action that inquires, make and whether protect the recorder data analysis module of the conclusion of correct operation;

By the fault fragment interception module that be presented at Information of mouse event mechanism with equation result of calculation;

With the Trouble Report output module that the result of analyzing derives with the WORD form, point out possible trouble spot.

Described direct current protecting accident intelligent analysis system, wherein, the fault fragment interception module of system is one section oscillogram that satisfies criterion of intercepting automatically, comprises the result of calculation of instantaneous value, effective value and each formula in data.

Beneficial effect of the present invention: the present invention passes through based on software programming technique; according to criterion, signal in advance; automatically resolve fault is recorded ripple; formed the method for all kinds of direct current protecting faults of intellectual analysis; greatly strengthen field staff's fault signature identification capability, effectively improved field staff's direct current protecting accident treatment efficient.

Description of drawings

Fig. 1 is system chart provided by the invention.

Fig. 2 is the analytical approach process flow diagram of the system carried of the present invention.

Embodiment

For making purpose of the present invention, technical scheme and advantage clearer, clear and definite, developing simultaneously referring to accompanying drawing, the present invention is described in more detail for embodiment.

Referring to Fig. 1, described direct current protecting accident intelligent analysis system comprises: transmission module, recorder data identification module, SER signal analyse block, protection denomination of dive extraction module, protection system and protection denomination of dive load module, Data Analysis and screening module, recorder data analysis module, fault fragment interception module and Trouble Report output module on recorder data.The system that above-mentioned module forms mainly is divided into four major parts, wherein, on recorder data, transmission module, recorder data identification module, SER signal analyse block, protection denomination of dive extraction module and protection system and protection denomination of dive load module are used for completing data importing; Data Analysis and screening module are used for completing Data Analysis and data screening; Recorder data analysis module, fault fragment interception module and Trouble Report output module are used for completing intellectual analysis.

On described recorder data, transmission module is used for the signal file of fault moment and the importing of recorded wave file; Signal file and recorded wave file that described recorder data identification module is used for the identification importing are text formatting or non-textual format, if text formatting is inputted data the SER signal analyse block and is screened, if non-textual format, picture for example, protection system and protection denomination of dive load module are activated, and require the title of active input protection system and protection action; Described protection system and protection denomination of dive load module are used for the title of input protection system and protection action; Described SER signal analyse block is used for screening, and has filtered out which protection action; Described protection denomination of dive extraction module is used for extracting from the protection action that filters out their title; Described Data Analysis and screening module are used for first data format being converted to the data layout of the unified identification of computing machine, then the protection name query that the protection title of taking out according to automatic lifting or user initiatively input goes out the criterion that this protection is moved; Described recorder data analysis module is used for finding by the scanning of record ripple the record wave band that meets operating criterion, and compares in the criterion with the protection action that inquires, and makes and whether protects the conclusion of correct operation; Described fault fragment interception module is used for by the be presented at Information of mouse event mechanism with equation result of calculation; The result that described Trouble Report output module is used for analyzing derives with the WORD form.

Referring to Fig. 2, the analytical approach of direct current protecting accident intelligent analysis system provided by the invention comprises the following steps:

Step 1: the signal file and the recorded wave file that import fault moment;

Step 2: be the discernible form of computing machine with the Data Analysis in recorded wave file;

Step 3: the everything signal is screened, choose the protection type of action;

Step 4: according to criterion given in advance, automatically extract relevant recorder data, and analyze and protect course of action whether to meet expected design; for the data segment that satisfies criterion; system adopts the mode of automatic sectional drawing, and the industrial accident analysis report is pointed out possible trouble spot.

Because the fault recorder data amount is huge, and the data format of different DC engineerings is different, so at first system need adopt the data identification technology in step S2, recorder data is resolved to discernible form, and then screen.

The first analytic method provided by the invention is: at first data are converted into electrical power system transient exchanges data common format, its analyzing step is:

Steps A 21: file reading flows in internal memory, does not report an error if file does not exist namely;

Steps A 22: the recorder data object (ci) of a newly-built ComtradeImpl type;

Steps A 23: come data in file reading with behavior unit, after reading the single file data, take comma as the separator partition data, obtain a character string array arr;

Steps A 24: according to the formal definition of configuration file, what the first row was stored is name of station, feature and modification time, what the second row was stored is quantity and the type of passage, ensuing analog channel information list, stator channel information list, line frequency, speed change sampling, sampling rate information, the first data point time, trigger point time, data file class and the time mark multiplier coefficients of being followed successively by;

Steps A 25: define an integer (int) object count and record current which row that reads;

Steps A 26: use BufferedReader to read configuration file stream with the circulation of behavior unit, judgement count, if 0, namely the arr storage of array is name of station, feature and modification time; If 1, namely the arr storage of array is quantity and the type of passage, traversal arr array stores respectively corresponding data structure in object ci into, the like, until run through document flow, the configuration file of namely recording ripple reads complete;

Steps A 27: read configuration file complete, the beginning read data files flows in internal memory, does not report an error if file does not exist namely;

Steps A 28: because data file is stored data with scale-of-two, so need to come take byte as unit data in file reading, store in byte arrays fileByte object;

Steps A 29: calculate one according to the quantity of passage and record shared byte number circulate;

Steps A 210: the record data object (sampleData) that a newly-built type is SampleData;

Steps A 211: circulation byte arrays fileByte, take circulate as unit, read corresponding data to sampleData, after having read a record, in the sampleDataList of storage sampleData in the ci, the like, until document flow runs through, the data file of namely recording ripple reads complete.So far, the partial data of a recorded wave file has been stored in ComtradeImpl object ci the inside.

The second analytic method provided by the invention is: at first data are converted into the Excel form, the parsing of comparing first method Excel file layout is simply many, its main form is a bivariate table structure, each row represents a passage, every delegation represents a time point, therefore the POI assembly by Java reads in this Excel form when program is resolved, and represents passage according to row, and row represents that the form of time point just can parse whole recorder data.

Its analyzing step is:

Step B21: system reads the xls file and flows in internal memory, does not report an error if file does not exist namely;

Step B22: the recorder data object (ci) of a newly-built ComtradeImpl type;

Step B23: create Workbook object wb according to Excel document flow, because the data of some systems only store in the first job table, so obtain first job table object sheet here, come the data in file reading take row (row) as unit, each cell is a data point;

Step B24: the configuration information for the record ripple of the first eight row storage of worksheet sheet, read successively the first eight row and store data structure corresponding in ci into;

Step B25: the record data object (sampleData) that a newly-built type is SampleData;

Step B26: since the 9th row circulation, record of every behavior stores sampleData into, after having read a record, the sampleDataList of storage sampleData in the ci, the like, until document flow runs through, the data file of namely recording ripple reads complete.So far, the partial data of a recorded wave file has been stored in ComtradeImpl object ci the inside.

When carrying out step 3, how system finds out in the face of ten hundreds of fault-signals and fault recorder data stream the information that we need fast and accurately, is to affect the step that field accident is processed rapidity and correctness key.The present invention has adopted multiplex screening in this link, specifically comprises the following steps:

Step 31: protection title screening.In each protection course of action, the part of taking charge is all generally the message of a certain protection action, as Sudden Changing Rate protection, traveling-wave protection etc.; After having determined main line, can guarantee the correctness of follow-up screening.

Step 32: action consequence keyword search.After the protection action, must be accompanied by certain action consequence, as tripping, fall power, bipolar balance movement etc.; Can further dwindle range of search;

Step 33: according to protection criterion locking recorder data.Every protection has self fixing operating criterion, as: extreme difference moves protects (87DCM), operating criterion to be | IdH-IdN|〉and 150A, time-delay 5ms.When system screens through first, second layer; when 87DCM protection action having been detected; be automatically associated to the IdH(high voltage bus DC current in recorder data), IdN(neutral bus DC current) two record ripple passages, greatly improved the scanning of back record ripple, equation is resolved and the efficient of analysis.

The intelligence incident management system can accurately be picked out trouble-signal and recorder data that we want by the screening of above-mentioned three steps from mass data, effectively get rid of interfere information.

After preparation through front three steps screening, system begins to carry out intellectual analysis, and its analytical approach comprises the following steps:

Step 41: system can find out corresponding criterial equation according to drawing the protection action message, and it is converted into the form that calculates function identification;

Step 42: system has the data volume of special computing to process to some so that with collection in worksite to individual quantities be converted into the polynary amount that needs in criterion;

Step 43: system begins to record ripple scanning, and the result according to screening scans the recorder data of using, to find the record wave band that meets operating criterion;

Step 44: recorder data and criterion that system will scan out compare, and make and whether protect the conclusion of correct operation.

To the criterial equation described in step 41, it method that is converted into the form that calculates function identification is divided into two processes, be divided into: equation standardization and equation are resolved.

So-called equation standardizes and refers to, the equation that the user is provided is organized into the cannonical format that computer system can be understood.Because can be more random in the time of the user writing mode, may occurring arbitrarily in equation, the expression of space, Chinese bracket or English bracket, absolute value is ABS function sometimes, sometimes be the mathematical notation of two vertical lines, this skimble-scamble Formula Input Technology can't be by the simple identification of computer program, and this just need to standardize to equation.And the resolving of equation is exactly that the mathematical formulae after standardization is converted to computer program, processes to carry out data.

In the present invention, the equation standardization mainly contains following agreement:

1, the space does not appear in equation

2, all functions use capitalization to represent, such as MIN, and MAX etc.

3, absolute value uses two vertical lines to represent

4, definite value represents with Δ

5, relation " with " use ﹠amp; ﹠amp; Expression concerns that "or" represents with or

Equation after standardization has used the expression parsing engine of a cover IKExpression by name to analyze and process.From the surface, as long as the parameter in formula and formula is passed to the expression parsing engine, just can obtain final result of calculation, greatly facilitate the resolving of numerous complicated formula, also saved the working time.

In the recorded wave file of each straight-flow system; what provide is all the record ripple of single numerical quantities, as: DC voltage UdL, DC current IdL etc., but need to use polynary amount in some protection criterion; as: voltage jump amount du/dt, valve star top-cross stream current effective value IacY etc.For these particular amount, the present invention processes according to certain operational method, as: effective value calculates, and the voltage jump amount is calculated, and the effective value of alternating current calculates.

Calculate about effective value: for ac analog, such as IacY etc., what record in recorder data is the instantaneous value of this amount, is carrying out data when calculating, instantaneous value does not have obvious meaning (especially when making comparisons with D. C. value), needs to calculate to be converted to effective value.Although the three-phase alternating current that China uses is the sine and cosine waveform of standard, this is theoretic result.In reality, due to problems such as the precision of surveying instrument, external interference, can not be in strict accordance with the waveform transformation of sine and cosine, and when system breaks down, obvious shake can appear in waveform, and various reasons all makes the effective value of ac analog, can not calculate according to theoretical formula.Following relation is arranged between the effective value of sine and cosine ripple and maximal value in theory:

$I_{\mathrm{RMS}}=\sqrt{2}\·I_{\mathrm{MAX}}$ Formula 1

In formula: I _RMSEffective value, I _MAXIt is maximal value.

The effective value of random waveform (being root-mean-square value) can obtain by following integration:

$I_{\mathrm{RMS}}=\sqrt{\frac{1}{T}\underset{0}{\overset{T}{\∫}}{i}^2\left(t\right)\·\mathrm{dt}}$ Formula 2

In formula: I _RMSBe effective value, T is the cycle, and i (t) is t instantaneous value constantly.

But such computing method are also only effective to continuous function.Clearly in reality, the data that get by the record ripple must be discrete on time point, therefore need to turn to above formula is discrete:

$I_{\mathrm{RMS}}=\sqrt{\frac{1}{T}\underset{0}{\overset{T}{\mathrm{\Σ}}}{i}^2\left(n\right)}$ Formula 3

In formula: I _RMSBe effective value, T is the cycle, i (n) be n constantly sampled data and to require n be 2 positive integer time power.

As long as with the recorder data substitution formula 3 in a cycle, just can calculate effective value corresponding on certain time point.

Calculate about the voltage jump amount: in the recorder data file of some, do not record to get the data of du/dt, therefore need system to calculate voluntarily.Du/dt is a micro component, therefore need to get a Minimum-time, according to expensive wide record wave frequency 6400Hz, calculate to such an extent that its cycle is 0.156ms, can meet minimum condition, therefore when calculating du/dt, system obtains two UdL numerical value that close on sampled point, do poor after again divided by cycle of 0.156ms and get final product, as follows:

$\mathrm{du}/\mathrm{dt}=\frac{\mathrm{UdL}\left(n\right)-\mathrm{UdL}(n+1)}{0.156}$ Formula 4

In formula: UdL (n) is n sampled data constantly.

Calculating about the effective value Iac of alternating current: system also calculative amount be exactly Iac(Uac in like manner).In recorded wave file, can record IacY and the IacD of subitem, i.e. valve star side A item electric current, B item electric current and C item electric current, and valve angle side A item electric current, B item electric current and C item electric current.Go for Iac and must first calculate to get valve star side electric current and the valve angle side electric current of not phase-splitting.Computing formula is as follows:

$\mathrm{IacY}=\frac{\mathrm{IacY}{A}_{\mathrm{RMS}}+\mathrm{IacY}{B}_{\mathrm{RMS}}+\mathrm{IacY}{C}_{\mathrm{RMS}}}{2}$ Formula 5

$\mathrm{IacD}=\frac{\mathrm{IacD}{A}_{\mathrm{RMS}}+\mathrm{IacD}{B}_{\mathrm{RMS}}+\mathrm{IacD}{C}_{\mathrm{RMS}}}{2}$

After obtaining IacY and IacD, the computing formula of Iac is:

Iac=max (IacY, IacD) formula 6

Wherein, the described record ripple scanning of step 43 is the analysis result according to the SER signal, system can first find out calculative criterion, find corresponding switching value title according to this criterion, this switching value of inquiry place passage in recorded wave file, and the moment of finding switching value to change, and take this moment as starting point, relevant analog quantity channel is scanned.The length of scanning is approximately the criterion length of outlet time, so on the one hand data volume is limited on the required some passages of criterion, and the variation by switching value, can also shorten the calculative record ripple time period, significantly reduce the data volume that participates in computing, obviously improved computational analysis efficient.

Process this step, can obtain criterial equation, and required recorder data or calculate the data of coming according to recorder data.The process of analysis has just become the scanning to recorder data.

Take time point as index, the scanning recorder data obtains on each time point and simulates numberical value of quantity, and the substitution formula calculates.If satisfy the criterion requirement, check the outlet time, if the outlet time is 0, this protection outlet action is described; If the outlet time is not 0, record these data, continue to calculate next point, until result of calculation does not satisfy criterion, or outlet time is up.

More than to calculate the correct situation of protection action.If the situation of protection incorrect operation, system does not just have the switching value can reference, can only get whole recorder datas and calculate, to judge whether meeting definite value and the record wave plate section of outlet time exists.

For the situation that logical relation is arranged in criterion, can calculate respectively the result of each equation, then get corresponding logical calculated and get final product.For the criterion of segmentation, just each section is used as one independently criterion treat, how many sections are criterion divide, and just recorder data carried out how many times scanning, to judge specifically where action has occured segment protect.

After analysis was completed, the fault fragment interception module of system is one section oscillogram that satisfies criterion of intercepting automatically, comprised the result of calculation of instantaneous value, effective value (if present) and each formula in data.The mouse event mechanism that provides by Rickshaw can obtain current mouse position, just can obtain the concrete coordinate of mouse loca on oscillogram by this position.The position at x coordinate place is drawn a vertical line with the first finger pin, and y coordinate (being the value of each passage) is presented in the Information of figure below.The x axle pointer of each block graphics of while can be followed mobile, and each group also has an Information that is used for showing equation result of calculation, and data wherein also can change with cursor movement.

After the failure wave-recording that satisfies criterion showed, the Trouble Report output module of system also provided the function that derives report.Click to derive the button of report, can first eject dialog box and allow the user confirm to generate the content of report, can revise as required, then click and determine, just can derive the analysis of Word form and report, can greatly save the follow-up time that goes out analysis report.

The present invention relies on tradition the accident analyzing process of manually carrying out, and by Data Analysis and software program method, changes the automatic analysis process into, is all at home and abroad a kind of innovation and breakthrough in the accident treatment technology.This D.C. high voltage transmission protection exception disposal system is according to on-the-spot operating position, and project achievement has strengthened first-line staff's fault signature identification capability greatly, effectively improves field staff's direct current protecting accident treatment efficient.

In direct current protecting accident treatment process in the past; we also do not have the analysis and processing method of a cover system; always search at the scene secondary circuit, software logic after running into emergency episode temporarily; also to take a long time simultaneously to analyze protection record ripple and coherent signal; deficiency in cognition; had a strong impact on the efficient of our accident treatment, be unfavorable for that recovering as early as possible faulty equipment puts into operation.

This system applies is after the scene, and the user only need to import corresponding SER and TFR data, and whether this system can protect correct operation according to the criterion automatic analysis of prior setting, can also automatically generate failure analysis report.When having saved the manual analysis time, for the location fault is fixed fast, the restorer operation provides strong technical guarantee.

For example, ± 500kV Converter of Guangzhou Converter Station SER reports " converter unit protection commutation failure (87CFP) is detected ", and bipolar commutation failure occurs then.After the operations staff imports " direct current protecting accident intelligent analysis system " with corresponding TFR and SER; the switching value that system's automatic analysis is corresponding and analog quantity; draw soon the conclusion of protection correct operation, and generated the analysis report of set form, consistent with the manual analysis conclusion.In addition, system has directly pointed out possible trouble spot according to the historical experience data, and the reason that has an accident is looked at the help scene very soon, originally needs the accident treatment that just can complete in 12 hours, has only used specifically more than 3 hour.

Should be understood that, application of the present invention is not limited to above-mentioned giving an example, and for those of ordinary skills, can be improved according to the above description or conversion, and all these improve and conversion all should belong to the protection domain of claims of the present invention.

Claims (10)

1. a direct current protecting accident intelligent analysis method, is characterized in that, comprises the following steps:

Step 1: the signal file and the recorded wave file that import fault moment;

Step 2: be the discernible form of computing machine with the Data Analysis in recorded wave file;

Step 3: the everything signal is screened, choose the protection type of action;

Step 4: carry out intellectual analysis, according to criterion given in advance, automatically extract relevant recorder data; and analyze and protect course of action whether to meet expected design, for the data segment that satisfies criterion, system adopts the mode of automatic sectional drawing; the industrial accident analysis report is pointed out possible trouble spot.

2. direct current protecting accident intelligent analysis method according to claim 1, is characterized in that, is that at first the discernible form of computing machine is converted into data electrical power system transient exchanges data common format with the Data Analysis in recorded wave file.

3. direct current protecting accident intelligent analysis method according to claim 1, is characterized in that, is that at first the discernible form of computing machine is converted into data the Excel form with the Data Analysis in recorded wave file.

4. direct current protecting accident intelligent analysis method according to claim 1, is characterized in that, the everything signal screened adopted the multiplex screening method, specifically comprises the following steps:

Step 31: protection title screening;

Step 32: action consequence keyword search;

Step 33: according to protection criterion locking recorder data.

5. direct current protecting accident intelligent analysis method according to claim 1, is characterized in that, the concrete steps that system carries out intellectual analysis comprise:

Step 41: system finds out corresponding criterial equation according to drawing the protection action message, and it is converted into the form that calculates function identification;

Step 42: system has the data volume of special computing to process to some, individual quantities is converted into the polynary amount that needs in criterion;

Step 43: system begins to record ripple scanning, and the result according to screening scans the recorder data of using, to find the record wave band that meets operating criterion;

Step 44: recorder data and criterion that system will scan out compare, and make and whether protect the conclusion of correct operation.

6. direct current protecting accident intelligent analysis method according to claim 5, is characterized in that, the method for criterial equation is converted into described in step 41 being calculated the form of function identification is divided into: equation standardization and equation are resolved two processes.

7. direct current protecting accident intelligent analysis method according to claim 5, is characterized in that, system has the data volume of special computing to process specifically to some to comprise: carry out effective value and calculate; Carry out the effective value calculating that the voltage jump amount is calculated and carried out alternating current.

8. direct current protecting accident intelligent analysis method according to claim 5; it is characterized in that; the concrete grammar that ripple scanning is recorded by system is the analysis result according to the SER signal; first find out calculative criterion; find corresponding switching value title according to this criterion again, this switching value of inquiry place passage in recorded wave file, and the moment of finding switching value to change; and take this moment as starting point, relevant analog quantity channel is scanned.

9. a direct current protecting accident intelligent analysis system, is characterized in that, comprising:

Transmission module on the signal file of importing fault moment and the recorder data of recorded wave file;

Signal file and recorded wave file that identification imports are text formatting or non-textual format, if text formatting is inputted data the SER signal analyse block and is screened, if non-textual format, protection system and protection denomination of dive load module are activated, and require the recorder data identification module of the title of active input protection system and protection action;

The protection system of the title of input protection system and protection action and protection denomination of dive load module;

Screen, filter out the SER signal analyse block of protection action;

Extract the protection denomination of dive extraction module of their title from the protection action that filters out;

First data format is converted to the data layout of the unified identification of computing machine, then the protection name query of the protection title of taking out according to automatic lifting or initiatively input go out this protection action criterion Data Analysis and screen module;

Find by record ripple scanning the record wave band that meets operating criterion, and compare in the criterion with the protection action that inquires, make and whether protect the recorder data analysis module of the conclusion of correct operation;

By the fault fragment interception module that be presented at Information of mouse event mechanism with equation result of calculation;

With the Trouble Report output module that the result of analyzing derives with the WORD form, point out possible trouble spot.

10. direct current protecting accident intelligent analysis system according to claim 8, is characterized in that, the fault fragment interception module of system is one section oscillogram that satisfies criterion of intercepting automatically, comprises the result of calculation of instantaneous value, effective value and each formula in data.

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