CN104467186A - Full network fault recording data parameter-free accurate synchronizing method - Google Patents

Abstract

The invention relates to a full network fault recording data parameter-free accurate synchronizing method. The full network fault recording data parameter-free accurate synchronizing method comprises the following steps that firstly, recording data of recorders are acquired through a recording data collecting module, and the acquired recording data are stored in a data center; secondly, clock states of the recorders are acquired through a recorder clock state acquiring module, and the time deviation Td of the recorders is obtained; thirdly, the recording data are correlated through an automatic recording data correlating module; fourthly, the correlated recording data obtained through the automatic recording data correlated module are synchronized through an automatic recording data synchronizing module. According to the full network fault recording data parameter-free accurate synchronizing method, the recording data from the recorders are fully utilized, system parameters are not needed, and the correlated recording data are automatically and accurately synchronized. Meanwhile, the method is achieved in a recorder networking system, using and operating are easy and convenient, and a dispatching worker can more accurately and visually grasp the fault situation in time.

Description

A kind of the whole network fault recorder data printenv precise synchronization method

Technical field

The invention belongs to electric network fault monitoring technical field, relate to fault recorder data synchronous method, particularly relate to a kind of the whole network fault recorder data printenv precise synchronization method.

Background technology

Along with increasing of unattended operation transformer station, the passage of distributed fault recorder data teletransmission and the solution of stipulations problem, the fault oscillograph (oscillograph) of distribution is interconnected and realize fault recorder data (recorder data) delivers to regulation and control center at multiple regional power grid by data network.Oscillograph networked system solves traditional recorder data and need arrive transformer station and transfer, the problem that accident analysis relatively lags behind.It forms by being positioned at the main station system at regulation and control center, the oscillograph being positioned at transformer station and the information transmission system.Main station system is connected by the oscillograph of dispatch data net with multiple transformer station, be responsible for collecting each oscillograph connect operation and the fault message of a secondary device.

When fault occurs, because fault disturbance is comparatively large, multiple oscillographs of the multiple transformer stations near fault origination point all can start record ripple, deliver to the multiple recorder data file of main station system simultaneously.Utilize these recorder datas can not only carry out comprehensive analysis to fault, other application can also be carried out.Such as carry out the measuring and calculating of transmission line parameter, electric network failure diagnosis, accurate fault localization and protection performance etc.Utilize the first step of these recorder datas to be these data files from each oscillograph by fault are occurred the moment associate, reject fault occur before and after irrelevant recorder data.Clock, can accurate faults time of origin and fault end time as one of most important fault message.At present, although unified time dissemination system is all equipped with in more than 220kV transformer station, the equipment of mode when some utilize pulse pair, because pulse signal reliability is poor, its clock is usually made mistakes, and also cannot ensure completely at present when multiple transformer stations oscillograph realizes accurate pair.Therefore, when carrying out accident analysis, for simple fault, staff can by analyzing multiple substation fault waveforms of main website, carries out manual association according to the change of feature electric parameters and protective circuit breaker action situation.But for the repeatedly complex fault that some occur at short notice, each transformer station may record repeatedly recorder data at short notice, accurate clock is not had to be difficult to judge the relevance of multiple recorder data.Therefore, be accurate analysis of failure, need multiple recorder datas of multiple oscillograph collection to carry out effective auto-associating and data syn-chronization according to each fault.

In method of data synchronization, to the data of different substation, utilize interconnection parameter between the electric current and voltage data before fault and two transformer stations, can accurately calculate the asynchronous time in theory.But in practical application, on the one hand because transmission line accurate parameters is difficult to obtain, even measured value also exists change, introduce comparatively big error to data syn-chronization.Oscillograph cannot be equal to relay protection device in management on the other hand, and its parameter reliability is poor.

Therefore, find a kind of comparatively accurately and the method for data synchronization the not relying on system parameters essential step that to be multi-Substation recorder data synchronously practical, be also be badly in need of in the monitoring of current electric network fault.

Summary of the invention

The present invention is intended to overcome the deficiencies in the prior art, a kind of the whole network fault recorder data printenv precise synchronization method is provided, the method makes full use of the recorder data from multiple oscillograph, does not need system parameters, achieves the automatic precise synchronization to the recorder data associated.

To achieve these goals, the invention provides following technical scheme: a kind of the whole network fault recorder data printenv precise synchronization method, it comprises the following steps: (1) obtains the recorder data of each oscillograph by recorder data acquisition module, and is stored in data center by the recorder data of acquisition; (2) obtained the clock status of each oscillograph by oscillograph clock status acquisition module, and obtain the time deviation T of each oscillograph _d; (3) by recorder data auto-associating module, multiple recorder data is associated; (4) by recorder data automatic synchronization module, multiple recorder datas be associated that described recorder data auto-associating module draws are carried out synchronously.

Further, wherein, described step (3) is specially: a, described data center obtain described time deviation T _d, and based on described time deviation T _dthe time of the recorder data of each oscillograph is revised; B, revise after inquiry whether have associate with it the fault time of other recorder datas, have just by its fault assignment to this recorder data; If not with the recorder data of its association in time, then what think that this recorder data reflect is once new fault, establishes new fault number to it.

Further, wherein, described step (4) is specially: a, by the recorder data in the described data center of fault number retrieval, carried out by the different recorder datas that there is same line synchronously; B, get fault occur before and after each cycle analyze, if fault occurs in outside two interconnection districts of transformer station, then by non-recorder data Synchronos method automatic aligning data, and record the asynchronous time; If c fault occurs on one of two transformer station's double back interconnections, then judging another loop line whether fault, as there is no fault, then completing synchronously by another loop line recorder data; If d circuit is single loop line, then according to the lock in time of the recorder data of other transformer stations calculated, searches roundabout interconnection passage, carry out calculating lock in time, realize synchronous; If e circuit is single loop line, and there is no roundabout interconnection passage, then use data near-synchronous before non-fault line fault.

Again further, wherein, the synchronous method in a in described step (4) is: first, according to the configuration of transformer station's oscillograph, extracts the common signal of each oscillograph data; Secondly, utilize the angular difference between common signal sine wave before and after whole wave Fourier transform extraction fault, calculate the asynchronous time of each oscillograph; Finally, according to the asynchronous time, by synchronous for all the other not common signal datas.

Multi-Substation recorder data association of the present invention and synchronous method, first for the situation that oscillograph gap clock each in oscillograph networked system is larger, detect oscillograph clock jitter, on this basis, realize the auto-associating of multiple recorder data.It makes full use of the recorder data from multiple oscillograph, does not need system parameters, achieves the automatic precise synchronization to the recorder data associated.The method is accomplished in oscillograph networked system, uses simple and convenient, enables dispatcher grasp failure condition more in time, accurately and intuitively, for electric network fault analytical applications on this basis provides deeper Data support.

Accompanying drawing explanation

Fig. 1 is the flow chart of the whole network fault recorder data printenv precise synchronization method of the present invention.

Fig. 2 is the schematic diagram of typical oscillograph networked system.

Fig. 3 is the schematic diagram of oscillograph time deviation Cleaning Principle and process.

Fig. 4 is partial electric grid topology schematic diagram.

Fig. 5 is transmission line lumped parameter model.

Fig. 6 is recorder data association and synchronous flow chart.

Embodiment

Describe the specific embodiment of the present invention in detail below in conjunction with accompanying drawing, the content of embodiment is not as the restriction to protection scope of the present invention.

Fig. 1 shows the flow chart of the whole network fault recorder data printenv precise synchronization method of the present invention.As shown in Figure 1, first the whole network fault recorder data printenv precise synchronization method of the present invention obtains the recorder data of each oscillograph by recorder data acquisition module, and is stored in data center by the recorder data of acquisition.Particularly, oscillograph networked system main website obtains the recorder data of each oscillograph by acquisition module, and data center is responsible for storing data and is supplied to engineer station and uses.

Secondly, obtained the clock status of each oscillograph by oscillograph clock status acquisition module, and obtain the time deviation Td of each oscillograph.Particularly, the mode adopting the cycle to patrol and examine in described oscillograph networked system main website, to obtain the clock status of each oscillograph, obtains oscillograph time deviation T _d, within the short time, think that this time deviation is constant.Described oscillograph clock status acquisition module is responsible for inquiry and calculates the clock status of oscillograph, and deposits data center, and engineer station can inquire the clock status of the whole network at any time simultaneously.

For the typical oscillograph networked system shown in Fig. 2, transformer station 1T ₁with transformer station 2T ₂between F point break down, Liang Ge transformer station all can record trouble data, and recorder data will be delivered to Lu Bo main website T by oscillograph dispatch data net ₀, the synchronous first step of two transformer station's recorder datas is the auto-associating carrying out two transformer station's recorder datas.

After grid collapses, recorder data comprises fault simulation amount data, switching value actuating signal and time of failure.Because of pair time error, the time in recorder data is inaccurate, and when Lu Bo main website to be undertaken pair by unified clock, the time is accurately.May be there is the deviation differed in size in each oscillograph and record ripple master clock, reach even a couple of days a few hours.

Relative to each oscillograph, record ripple master clock is unique, and the key of carrying out recorder data auto-associating is to detect each oscillograph time and record ripple master clock deviation.As shown in Figure 2, two adjacent substations, by dispatch data net and the communication of Lu Bo main website, can utilize Lu Bo main website to carry out time detecting to the oscillograph being distributed in each transformer station.

Analyze by above, the time deviation between oscillograph is different in size, does not have rule, and to record ripple master clock be accurate and unique.If each oscillograph of energy Real-time Obtaining is relative to the time deviation of Lu Bo main website, just after fault occurs, with the time of failure in this time deviation calibration recorder data, the association in time of each recorder data can be realized.

Lu Bo main website obtains each oscillograph time deviation T _dprinciple and process as shown in Figure 3.Wherein, the acquisition module of (1) Lu Bo main website is at T _a1moment sends request clock message to oscillograph.(2) oscillograph is at T _b1moment receives request clock message, through △ t _bresponse time, at T _b2moment sends response message to main website.(3) acquisition module of Lu Bo main website receives the response message that oscillograph sends, and calculates time deviation T _d.Computational methods are as follows:

Wherein, transmission delay is: $\mathrm{\Δt}=\frac{\mathrm{\Δ}{t}_A-\mathrm{\Δ}{t}_B}{2}---\left(1\right)$

So, time deviation is: $T_d=T_{B1}-T_{A1}-\mathrm{\Δt}=T_{B1}-T_{A1}-\frac{\mathrm{\Δ}{t}_A-\mathrm{\Δ}{t}_B}{2}---\left(2\right)$

Because the response speed of oscillograph is very fast, generally at Microsecond grade, therefore we can ignore △ t _b, make T _b1=T _b2=T _b, substituting into above formula can obtain: (3)

In the time deviation of each oscillograph of mode Real-time Obtaining that Lu Bo main website can be patrolled and examined by the cycle, suppose that Lu Bo main website detects and to break down in the T moment, the oscillograph time deviation of inquiry T moment place polling period transformer station 1 is T _1d, the time of failure of oscillograph record is T ₁, then through revising, the fault time of the oscillograph collection of transformer station 1 is:

Ｔ _1F＝Ｔ ₁-Ｔ _1d(4)

In like manner, after fault occurs, time complexity curve can be carried out to the recorder data that the oscillograph of transformer station 2 send, after elapsed time correction, by the fault time of more each oscillograph image data, recorder data can be associated, that is, if the fault time of recorder data is identical, then they are recorder datas of association.By the impact of polling period length, and the difference of oscillograph response time, this time deviation is Millisecond, but is not completely accurate, cannot utilize this time complexity curve result that each recorder data is carried out precise synchronization.Therefore, next step seeks the synchronous method of recorder data.

As shown in Figure 4, if fault occurs in circuit L1, then circuit L1 two ends transformer station and adjacent substations thereof multiple oscillograph such as (stand 1, stand 2, stand 3) all can start record ripple, and deliver to failure wave-recording main website by recorder data file.According to preceding method, the recorder data from multiple oscillograph is associated by current failure by failure wave-recording main website.Afterwards, each data file is read each record ripple passage recorded data of each recorder data by failure wave-recording main website by COMTRADE form, by the change of revised record ripple initial time and electric parameters, it is the synchronous of a cycle that all recorder datas all can realize error in a cycle before and after fault occurs.Next, what need to carry out is the precise synchronization of data.According to the difference of oscillograph place transformer station, recorder data is divided into the data deriving from the different oscillograph of same transformer station and the data deriving from different substation oscillograph.Therefore, data syn-chronization divides two steps to carry out.The first step is that second step is by the data syn-chronization from different substation oscillograph by the data syn-chronization of different for same transformer station oscillograph.

One, same transformer station recorder data is synchronous

At present, the transformer station more to the transformer station or outgoing line interval that there is different electric pressure, the actual multiple stage oscillograph that all configures is to complete the monitoring to the many equipment of multi-compartment.The main primary equipment of transformer station can be divided into bus, circuit, main transformer three major types.To the line segregation of the different oscillograph of access, the busbar voltage that each interval gathers is its common signal.If there is independent main transformer oscillograph, main transformer each side voltage and each side bus voltage are also common signals.If there is independent bus oscillograph, then the electric current of each bus outgoing line interval and the electric current of line segregation are also common signals.Utilize the data syn-chronization that these common signals can realize between different oscillograph.Synchronous method and step as follows: (1), according to the configuration of transformer station oscillograph, extracts the common signal of each oscillograph data.(2) utilize the angular difference between common signal sine wave before and after whole wave Fourier transform extraction fault, calculate the asynchronous time of each oscillograph.(3) according to the asynchronous time, by synchronous for all the other not common signal datas.

Two, between different substation, recorder data is synchronous

As shown in Figure 4, after fault occurs, be sent in the data file that Lu Bo main website is associated, not only have the electrical data of circuit L1 both sides, and have the electrical data at the circuit two ends such as circuit L2, circuit L3, circuit L4.Because of from identical transformer station data synchronously, then the circuit L1 two end data asynchronous time is identical with the asynchronous time of circuit L2 two end data.By asking the asynchronous time of circuit L2, can be synchronous with the recorder data at station 2 by the recorder data at station 1.If fault occurs in single back line L3, the electric parameters at circuit L1 two ends can be first utilized to obtain the asynchronous time t of station 2 and station 1 recorder data ₁₂, the electric parameters at recycling circuit L4 two ends obtains the asynchronous time t of station 1 and station 3 recorder datas ₁₃, then the asynchronous time t of recorder data stood between 2 and station 3 ₂₃=t ₁₂-t ₁₃.Therefore, when single back line fault, if can there be the oscillograph data of roundabout communication line at these circuit two ends, all obtain the asynchronous time of faulty line two ends recorder data by non-fault line.To only a few single back line or the recorder data not having roundabout communication line, try to achieve the asynchronous time with the data of faulty line itself are approximate.Therefore synchronized algorithm is divided into two kinds, a kind of is utilize non-fault line data to carry out the synchronous method of recorder data, be called non-fault line data syn-chronization method, another kind utilizes faulty line data to carry out the synchronous method of recorder data, is called faulty line data syn-chronization method.

Non-fault line data syn-chronization method

To the non-fault line lumped parameter model shown in Fig. 5, if m side electric current and voltage column vector is: U _m=[U _mau _mbu _mc] ^t, I _m=[I _mai _mbi _mc] ^t, N side electric current and voltage column vector is: U _n=[U _nau _nbu _nc] ^t, I _n=[I _nai _nbi _nc] ^t, wherein, U _marepresent a phase voltage of m side; U _mbrepresent the b phase voltage of m side; U _mcrepresent the c phase voltage of m side; I _marepresent a phase current of m side; I _mbrepresent the b phase current of m side; I _mcrepresent the c phase current of m side; T represents the transposition of vector.

If transmission line over the ground admittance matrix is Y.By Fig. 5, to power frequency amount, if asynchronous angle, circuit both sides is δ, then have:

$\frac{Y}{2}*(U_m+U_n\×e^{\mathrm{j\δ}})=I_n\×e^{\mathrm{j\δ}}+I_m---\left(5\right)$

Be row vector by formula (5) both sides column vector transposition, because Y is symmetrical matrix, then have:

${(U_m+U_n\×e^{\mathrm{j\δ}})}^T\×\frac{Y}{2}={(I_n\×e^{\mathrm{j\δ}}+I_m)}^T---\left(6\right)$

If after fault, m, n side electric current and voltage column vector is respectively: U _mf, I _mf, U _nf, I _nf, because this circuit is non-fault line, then formula (5) is set up equally, can obtain:

$\frac{Y}{2}\×(U_{\mathrm{mf}}+U_{\mathrm{nf}}\×e^{\mathrm{j\δ}})=I_{\mathrm{nf}}\×e^{\mathrm{j\δ}}+I_{\mathrm{mf}}---\left(7\right)$

By formula (7) both sides premultiplication with (U _m+ U _n* e ^{j δ}) ^t, can obtain:

$\begin{array}{c}{(U_m+U_n\×e^{\mathrm{j\δ}})}^T\×\frac{Y}{2}\×(U_{\mathrm{mf}}+U_{\mathrm{nf}}\×e^{\mathrm{j\δ}})\\ ={(U_m+U_n\×e^{\mathrm{j\δ}})}^T\×(I_{\mathrm{nf}}\×e^{\mathrm{j\δ}}+I_{\mathrm{mf}})\end{array}---\left(8\right)$

Formula (6) is substituted into formula (8):

$\begin{array}{c}{(I_n\×e^{\mathrm{j\δ}}+I_m)}^T\×(U_{\mathrm{mf}}+U_{\mathrm{nf}}\×e^{\mathrm{j\δ}})\\ ={(U_m+U_n\×e^{\mathrm{j\δ}})}^T\×(I_{\mathrm{nf}}\×e^{\mathrm{j\δ}}+I_{\mathrm{mf}})\end{array}---\left(9\right)$

Separate quadratic equation with one unknown and can obtain e ^{j δ}two roots, because of | e ^{j δ}|=1, remove pseudo-root, asynchronous angle δ can be obtained, to power frequency amount, the asynchronous time wherein f is work frequency.Wherein, above-mentioned various in e ^{j δ}for Euler's formula.

Derive as can be seen from above, solving of asynchronous time is the accurate result not relying on line parameter circuit value, fault type and fault point.

Faulty line data syn-chronization method

Concerning faulty line, formula (7) is no longer set up, and accurately cannot be tried to achieve the asynchronous time of circuit two ends recorder data, but formula (5) is still set up by formula (9).In practical engineering application, transmission line three relatively admittance parameter is all thought equal, and ignores its transadmittance, then matrix Y is diagonal matrix and diagonal entry is all equal.For a phase, then formula (5) is reduced to

$\frac{Y_a}{2}=\frac{I_{\mathrm{na}}\×e^{\mathrm{j\δ}}+I_{\mathrm{ma}}}{(U_{\mathrm{ma}}+U_{\mathrm{na}}\×e^{\mathrm{j\δ}})}---\left(10\right)$

Because conductance is very little compared to capacitance to earth over the ground, ignore conductance over the ground, then a relatively admittance Y _areal part is zero, that is:

$\mathrm{Re}[(I_{\mathrm{na}}\×e^{\mathrm{j\δ}}+I_{\mathrm{ma}})\×\stackrel{\‾}{(U_{\mathrm{ma}}+U_{\mathrm{na}}\×e^{\mathrm{j\δ}})}]=0---\left(11\right)$

Wherein, R _erepresent that plural number gets real part, upper line represents the conjugation of plural number.

Formula (11) can turn to simple trigonometric function:

f(δ)＝acosδ+bsinδ+c＝0 (12)

Wherein, a, b, c are a phase voltage electric current plural number U _ma, U _na, I _ma, I _nathe algebraic combination of real imaginary part.Solution formula (12) asynchronous angle, thus realize data syn-chronization.

When specific implementation, the Lu Bo main website of oscillograph networked system obtains the recorder data of each oscillograph by acquisition module, and data center is responsible for storing data and is supplied to engineer station and uses.In order to realize the association of multi-Substation recorder data and synchronised automatic, in trouble analysis system, build three modules: oscillograph clock status acquisition module, recorder data auto-associating module, recorder data automatic synchronization module.

Wherein, in Lu Bo main website, the mode of patrolling and examining is to obtain the clock status of each oscillograph the employing cycle, obtains oscillograph time deviation T _d, within the short time, think that this time deviation is constant.Acquisition module is responsible for inquiry and is calculated the clock status of oscillograph, and deposits data center, and engineer station can inquire the clock status of the whole network at any time simultaneously.

Record ripple relating module specific implementation flow process as shown in Figure 6.The recorder data of acquisition system meeting timing acquiring oscillograph, and preserve with device by date.Define each recorder data and have a fault number (FaultNum), multiple fault has same fault number (FaultNum) and then thinks that their reflect same primary fault jointly, is association.After grid collapses, main website collection can obtain the recorder data of multiple oscillograph the very first time, stored in database after processing it, processing procedure is as follows: (1) data center obtains the time of real-time time deviation Td to recorder data and revises.(2) after revising, whether inquiry has associate with it the fault time of other fault datas, have just by its fault assignment to current fault; If not with the fault data of its association in time, then what think that this fault data reflect is once new fault, establishes new fault number to it.

Engineer station will press fault reading database, inter-related fault be stored together, and store its fault number and time of failure simultaneously after sending record ripple association request.

Realize in the analysis storehouse of the recorder data automatic synchronization module heart in the data, analytic target is multiple fault datas be associated that failure wave-recording auto-associating module draws.Synchronizing process is as follows: (1) presses fault number retrieval recorder data, is matched by the different recorder datas that there is same line.(2) before and after getting fault generation, each cycle is analyzed, if fault occurs in outside two interconnection districts of transformer station, then by non-recorder data Synchronos method automatic aligning data, and records the asynchronous time.(3) if fault occurs on one of two transformer station's double back interconnections, then judging another loop line whether fault, as there is no fault, then being completed synchronously by another loop line recorder data.(4) if circuit is single loop line, then according to the lock in time of other transformer station's recorder datas of (2), the calculating of (3) computational methods, search roundabout interconnection passage, carry out calculating lock in time, realize synchronous.(5) if circuit is single loop line, and there is no roundabout interconnection passage, then use data near-synchronous before non-fault line fault.

Multi-Substation recorder data association of the present invention and synchronous method, first for the situation that oscillograph gap clock each in oscillograph networked system is larger, detect oscillograph clock jitter, on this basis, realize the auto-associating of multiple recorder data.Make full use of the recorder data from multiple oscillograph, do not need system parameters, achieve the automatic precise synchronization to the recorder data associated.The method is accomplished in oscillograph networked system, uses simple and convenient, enables dispatcher grasp failure condition more in time, accurately and intuitively, for electric network fault analytical applications on this basis provides deeper Data support.

The content of embodiment is understood for the ease of those skilled in the art and uses the present invention and describe, and does not form restriction the present invention being protected to content.Those skilled in the art, after having read content of the present invention, can carry out suitable amendment to the present invention.Protection content of the present invention is as the criterion with the content of claim.When not departing from flesh and blood and the protection range of claim, the various amendments carried out the present invention, change and replacement etc. are all within protection scope of the present invention.

Claims (4)

1. the whole network fault recorder data printenv precise synchronization method, it comprises the following steps:

(1) obtained the recorder data of each oscillograph by recorder data acquisition module, and the recorder data of acquisition is stored in data center;

(2) obtained the clock status of each oscillograph by oscillograph clock status acquisition module, and obtain the time deviation Td of each oscillograph;

(3) by recorder data auto-associating module, multiple recorder data is associated;

(4) by recorder data automatic synchronization module, multiple recorder datas be associated that described recorder data auto-associating module draws are carried out synchronously.

2. the whole network fault recorder data printenv precise synchronization method as claimed in claim 1, wherein, described step (3) is specially: a, described data center obtain described time deviation T _d, and based on described time deviation T _dthe time of the recorder data of each oscillograph is revised; B, revise after inquiry whether have associate with it the fault time of other recorder datas, have just by its fault assignment to this recorder data; If not with the recorder data of its association in time, then what think that this recorder data reflect is once new fault, establishes new fault number to it.

3. the whole network fault recorder data printenv precise synchronization method as claimed in claim 2, wherein, described step (4) is specially: a, by the recorder data in the described data center of fault number retrieval, carried out by the different recorder datas that there is same line synchronously; B, get fault occur before and after each cycle analyze, if fault occurs in outside two interconnection districts of transformer station, then with non-recorder data Synchronos method automatically synchronizing data, and record the asynchronous time; If c fault occurs on one of two transformer station's double back interconnections, then judging another loop line whether fault, as there is no fault, then completing synchronously by another loop line recorder data; If d circuit is single loop line, then according to the lock in time of the recorder data of other transformer stations calculated, searches roundabout interconnection passage, carry out calculating lock in time, realize synchronous; If e circuit is single loop line, and there is no roundabout interconnection passage, then use data near-synchronous before non-fault line fault.

4. the whole network fault recorder data printenv precise synchronization method as claimed in claim 3, wherein, the synchronous method in a in described step (4) is: first, according to the configuration of transformer station's oscillograph, extracts the common signal of each oscillograph data; Secondly, utilize the angular difference between common signal sine wave before and after whole wave Fourier transform extraction fault, calculate the asynchronous time of each oscillograph; Finally, according to the asynchronous time, by synchronous for all the other not common signal datas.