CN110988506A - Secondary wireless nuclear phase instrument for intelligent substation - Google Patents
Secondary wireless nuclear phase instrument for intelligent substation Download PDFInfo
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- CN110988506A CN110988506A CN201911091580.9A CN201911091580A CN110988506A CN 110988506 A CN110988506 A CN 110988506A CN 201911091580 A CN201911091580 A CN 201911091580A CN 110988506 A CN110988506 A CN 110988506A
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- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/18—Indicating phase sequence; Indicating synchronism
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- H04J3/0635—Clock or time synchronisation in a network
- H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
- H04J3/0658—Clock or time synchronisation among packet nodes
- H04J3/0661—Clock or time synchronisation among packet nodes using timestamps
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Abstract
According to the intelligent substation secondary wireless phase checking instrument, frequency and phasor data synchronization is carried out between the wireless phase checking instruments in a wireless data transmission mode, and the data synchronization process comprises the steps of controlling the standard wireless phase checking instrument to send a synchronization message and a tracking message with a first timestamp to the wireless phase checking instrument to be detected and receiving a time delay request message fed back by the wireless phase checking instrument to be detected; enabling the standard wireless phase checking instrument to send a delay response message with a time mark based on the received delay request message; and calculating a correction error by the wireless phase checking instrument to be detected based on the time mark in the delay response message, and controlling the wireless phase checking instrument to be detected to periodically compensate the correction error to realize data synchronization. Time delay compensation is carried out through the timestamp based on the synchronization process, data synchronization between the two wireless nuclear phase instruments can be guaranteed, the data synchronization difficulty is reduced, and the synchronization accuracy is improved.
Description
Technical Field
The invention belongs to the field of wireless transmission, and particularly relates to a secondary wireless nuclear phase instrument of an intelligent substation.
Background
In an electric power system, a wiring error or equipment fault may exist before primary equipment and secondary equipment are operated without a power grid in a charged mode, so that the amplitude and the phase of voltage need to be checked before the primary equipment and the secondary equipment are put into operation, and the process is simply referred to as voltage phase checking. The voltage nuclear phase is the last checkpoint before the relay protection is put into operation, the problems that the ground cannot be connected in parallel with the system and the like due to abnormal states or even fault states of primary or secondary equipment operation can be found, the problems of phase sequence errors, phase loss, wiring errors, abnormal secondary voltage and the like can also be found, a plurality of relay protections in a high-voltage system have directionality, and in order to ensure the correctness of protection actions, phase measurement between current and voltage under load must be carried out before the relay protection is put into operation. Whether the secondary loop is correct or not can be judged by measuring the phase between the current and the voltage of the secondary loop, and whether the operation condition is met or not can be judged.
In a conventional station, all secondary loops are transmitted through cables, voltage phase checking can be carried out on the same power supply or different power supplies in the same screen cabinet by adopting a multimeter or a three-phase voltammeter and the like, but the method limits the phase checking distance and does not allow remote distributed phase checking. For an intelligent substation, due to the idea of a distributed structure, a heterogeneous power supply is difficult to carry out phase verification, for example, a phase verification between high and low voltage sides of a main transformer makes a maintenance worker need to carry out phase verification by a cable with the length of dozens of meters or even hundreds of meters, the working range is large, potential safety hazards exist, the workload is increased due to the safe laying of the long cable, and the improvement of the working efficiency is not facilitated. Therefore, the split type measuring instrument is designed by utilizing the wireless communication and synchronization technology, and the problem that the intelligent substation is difficult to carry out remote phase checking is solved.
Disclosure of Invention
In order to solve the defects and shortcomings in the prior art, the invention provides the secondary wireless phase checking instrument of the intelligent substation, frequency and phasor data synchronization is carried out between the wireless phase checking instruments in a wireless data transmission mode, time delay compensation is carried out based on timestamps in the synchronization process, data synchronization between the two wireless phase checking instruments can be ensured, the data synchronization difficulty is reduced, and the synchronization accuracy is improved.
Specifically, the data synchronization process includes:
the method comprises the steps that a standard wireless phase checking instrument is controlled to send a synchronous message and a tracking message with a first timestamp to a wireless phase checking instrument to be detected, and a time delay request message fed back by the wireless phase checking instrument to be detected is received;
enabling the standard wireless phase checking instrument to send a delay response message with a time mark based on the received delay request message;
and calculating a correction error by the wireless phase checking instrument to be detected based on the time mark in the delay response message, and controlling the wireless phase checking instrument to be detected to periodically compensate the correction error to realize data synchronization.
Optionally, the controlling the standard wireless phase checking instrument sends a synchronization message and a tracking message with a first timestamp to the wireless phase checking instrument to be tested, and receives a delay request message fed back by the wireless phase checking instrument to be tested, including:
the standard wireless nuclear phase instrument sends a synchronous message and a tracking message with a synchronous message sending time mark (t 1);
the wireless phase checking instrument to be detected receives the synchronous message, and the time mark is t 2; receiving the tracking message, reading a synchronous message sending time mark t 1;
recording the time delay from the standard wireless phase checking instrument to the wireless phase checking instrument to be tested as delta ta, namely t2-t 1;
after receiving the tracking message, the wireless phase checking instrument to be tested sends a time delay request message to the standard wireless phase checking instrument, and the time mark of message sending is t 3;
and after the standard wireless phase checking instrument receives the time delay request message sent by the wireless phase checking instrument to be detected, marking the time mark as t 4.
Optionally, the causing the wireless phase detector to be detected to calculate a correction error based on the time mark in the delay response message, and controlling the wireless phase detector to be detected to periodically compensate the correction error to realize data synchronization includes:
the wireless phase checking instrument to be detected receives the time delay response message sent by the standard wireless phase checking instrument and extracts the time mark t4 in the time delay response message;
recording the time delay from the wireless phase checking instrument to be tested to the standard wireless phase checking instrument as delta tb, namely t4-t 3;
at the moment, the calculation and correction errors of the wireless phase checking instrument to be detected are as follows: Δ t ═ (Δ ta + Δ tb)/2 ═ ((t2-t1) + (t4-t 3))/2;
and periodically compensating delta t for the wireless phase detector to be detected to track the clock of the standard wireless phase detector.
Optionally, the data synchronization process further includes:
and compensating the phase delay in the acquisition process of the analog quantity and the digital quantity.
Optionally, the compensating for the phase delay in the acquisition process of the analog quantity and the digital quantity includes:
the synchronous time interval of a wireless radio frequency synchronous module of a standard wireless nuclear phase instrument is set to be 1s, and synchronous pulse signals are sent to the wireless nuclear phase instrument to be tested every 1 s;
after receiving the synchronous pulse signal, the wireless phase checking instrument to be tested takes the last 2 cycles of SV data of the first sampling point after the synchronous pulse to perform Fourier algorithm operation, performs time delay compensation and calculates a first effective value and a first phase angle;
when the standard wireless phase checking instrument sends a synchronization signal to the wireless phase checking instrument to be detected, a synchronization pulse is also output to the FPGA at the side, the FPGA starts AD (analog-to-digital) to start sampling, 2 cycles of data are collected to carry out a quadratic algorithm operation, and a second effective value and a second phase angle are calculated;
and performing phase delay compensation based on the difference value of the first effective value and the second effective value and the difference value of the first phase angle and the second phase angle.
Optionally, the data synchronization process further includes:
and performing phase compensation based on the pulse time delay.
Optionally, the phase compensation based on the pulse delay includes:
recording the time t1 of the wireless phase detector to be detected receiving the synchronous pulse signal, and the unit s;
analyzing the received SV message to obtain the value of the first channel in the SV message, namely the MURated time delay；
Recording the time t2, in units of s, of the first sample point after the synchronization pulse;
acquiring channel frequency of SV message, and recording as f and unit HZ;
calculating a phase compensation value phi
φ＝(t2-t1-MURated time delay×10-6)-f×360。
Optionally, the data synchronization process further includes:
and performing phase compensation based on sequence number alignment.
Optionally, the performing phase compensation based on sequence number alignment includes:
analyzing the SV message received by the wireless phase checking instrument to be tested, and acquiring the 0-label time of the SV message, which is recorded as t1 and unit s;
recording the time t2 of the wireless phase detector to be detected for collecting a first point in unit s;
acquiring channel frequency of SV message, and recording as f and unit HZ;
calculating the phase compensation value as phi
φ＝(t2-t1)-f×360。
Optionally, the data synchronization process further includes:
before phase checking, a master wireless phase checking instrument and a slave wireless phase checking instrument need to perform time synchronization and enter a synchronization mode;
when the standard wireless phase checking instrument and the wireless phase checking instrument to be detected reach a synchronous mode, an AD sampling module of the device starts to start A/D sampling according to synchronous second pulse, wherein the FPGA controls 100uS equal intervals to start A/D sampling, 200 point data are sampled by 50Hz signals per cycle, namely the sampling interval is 100 uS.
The technical scheme provided by the invention has the beneficial effects that:
the devices at different intervals are sampled at fixed frequency and sampling frequency, and after enough sampling points are obtained, the sampling points are sent to the DSP for FFT operation, and the amplitude, the frequency and the phase are calculated. The two devices use the wireless communication function respectively carrying the radio frequency module to carry out wireless mutual transmission on the processed data. Time delay compensation is carried out through the timestamp based on the synchronization process, data synchronization between the two wireless nuclear phase instruments can be guaranteed, the data synchronization difficulty is reduced, and the synchronization accuracy is improved.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
Fig. 1 is a schematic diagram illustrating a principle of information synchronization based on a wireless module according to an embodiment of the present application;
fig. 2 is a schematic diagram illustrating a synchronization principle of a wireless module according to an embodiment of the present application.
Detailed Description
To make the structure and advantages of the present invention clearer, the structure of the present invention will be further described with reference to the accompanying drawings.
Example one
In the wireless phase checking technology of the power system, the most important thing is to realize synchronous sampling between different wireless phase checking instruments, because the power system is 50HZ, if the sampling phase difference between different wireless phase checking instruments is 1ms, the angle phase difference is 180, which causes that a voltage difference of about 18V is generated between the same-phase voltages when the same-phase voltage is subjected to homologous phase checking, and the correct judgment of the voltage phase checking is influenced. In general synchronization application, the main methods include Beidou time synchronization, GPS time synchronization and NTP time synchronization, wherein the Beidou time synchronization and the GPS time synchronization have high synchronization precision, but the cost is high and the energy consumption is large,
according to the thought about that a protection device does not depend on an external time synchronization system to realize the protection function of the protection device and avoid the simultaneous loss of multiple sets of protection caused by the time synchronization system or network faults, after analyzing the good and bad factors of the existing time synchronization technology, the invention provides a synchronous time synchronization technology (Based on Ping-Pong timer) Based on the Ping-Pong principle: the master node sends a time tick signal containing local sending time, the slave node records receiving time according to the internal local time and takes out the sending time in the time tick signal, thereby calculating the time delay from the master node to the slave node, similarly, the time delay from the slave node to the master node can be calculated, finally, the average time delay is calculated, and the slave node clock is continuously adjusted to be synchronous.
Based on a distributed concept, development of a wireless phase checking instrument is provided, and key technical algorithms such as high-precision synchronization and data transmission are realized in a wireless transmission mode, so that distributed wireless phase checking of the intelligent transformer substation is realized. Wireless communication addresses the data transmission problem. The devices at different intervals can sample at fixed frequency and sampling frequency, and send the obtained sufficient sampling points to DSP for FFT operation to calculate amplitude, frequency and phase. The two devices use the wireless communication function respectively carrying the radio frequency module to carry out wireless mutual transmission on the processed data.
Specifically, the data synchronization process proposed in this embodiment is shown in fig. 1, and includes:
11. and controlling the standard wireless phase checking instrument to send a synchronous message and a tracking message with a first timestamp to the wireless phase checking instrument to be detected, and receiving a time delay request message fed back by the wireless phase checking instrument to be detected.
12. And enabling the standard wireless phase checking instrument to send a delay response message with a time mark based on the received delay request message.
13. And calculating a correction error by the wireless phase checking instrument to be detected based on the time mark in the delay response message, and controlling the wireless phase checking instrument to be detected to periodically compensate the correction error to realize data synchronization.
In the implementation, the synchronization between the wireless modules is realized, the synchronization error needs to be corrected, and the offset of the clock between the main wireless modules and the network transmission delay are corrected; the slave clock periodically adjusts the clock to track the master clock, and the main method is to compensate the offset of the master clock and the slave clock and the network transmission delay;
the implementation process and the principle of wireless module synchronization are shown in fig. 2.
A. The standard wireless nuclear phase instrument sends a synchronous message and a tracking message with a synchronous message sending time mark (t 1);
B. the wireless phase checking instrument to be detected receives the synchronous message, and the time mark is t 2; receiving the tracking message, reading a synchronous message sending time mark t 1;
C. recording the time delay from the standard wireless phase checking instrument to the wireless phase checking instrument to be tested as delta ta, namely t2-t 1;
D. after receiving the tracking message, the wireless phase checking instrument to be tested sends a time delay request message to the standard wireless phase checking instrument, and the time mark of message sending is t 3;
E. after the standard wireless phase checking instrument receives the time delay request message sent by the wireless phase checking instrument to be detected, marking the time mark as t 4;
F. the standard wireless phase detector replies a time delay request message of the wireless phase detector to be detected and sends a time delay response message with a time mark t 4;
G. the wireless phase checking instrument to be detected receives the time delay response message sent by the standard wireless phase checking instrument and extracts the time mark t4 in the time delay response message;
H. recording the time delay from the wireless phase checking instrument to be tested to the standard wireless phase checking instrument as delta tb, namely t4-t 3;
I. at the moment, the calculation and correction errors of the wireless phase checking instrument to be detected are as follows: Δ t ═ (Δ ta + Δ tb)/2 ═ ((t2-t1) + (t4-t 3))/2;
J. the wireless nuclear phase instrument to be tested periodically compensates delta t to track the clock of the standard wireless nuclear phase instrument, and synchronization between the standard wireless nuclear phase instrument and the wireless nuclear phase instrument to be tested is achieved.
The implementation process of wireless communication, pulse synchronization and time synchronization between the devices is given by taking 1 master device and 2 slave devices as examples. The equipment 1 starts a wireless synchronous communication standard wireless phase checking instrument in the equipment 1, the wireless synchronous communication standard wireless phase checking instrument can send time synchronization signals to each wireless phase checking instrument to be detected, meanwhile, the wireless phase checking instrument outputs PPS (pulse per se) to the equipment FPGA through a synchronization pulse pin to be used as a synchronous sampling pulse reference, after each wireless phase checking instrument to be detected receives the wireless synchronization signals sent by the standard wireless phase checking instrument, the time of each equipment can be synchronized (the time reference is consistent with the time in the equipment 1), meanwhile, the PPS is also output to each slave equipment FPGA through the synchronization pulse pin of the wireless synchronous communication standard wireless phase checking instrument to be detected of each equipment to be used as a synchronous sampling pulse reference, on the basis, the time synchronization among the equipment can be realized, and the pulse synchronization (the synchronization time and the synchronization pulse error are 800 nS). Meanwhile, the user data can also realize wireless transmission among all the devices through the wireless synchronous communication module.
1) For time synchronization
Time synchronization solves the problem of phase checking accuracy. The phase checking is realized by comparing the phase relationship of two waveforms at the same time, and factors such as asynchronous sampling, transmission delay and the like can cause a receiving end to receive data at different sampling times, so that phase deviation is artificially introduced, and therefore phase compensation needs to be carried out on the time difference.
The radio frequency module has a synchronous pulse per second output function, and the time starting points of the two devices can be aligned by adopting the synchronous signal, so that the phase deviation can be eliminated by using an algorithm.
2) Compensation in the acquisition of analog and digital quantities
The synchronous time interval of the wireless radio frequency synchronous module of the standard wireless phase checking instrument is set to be 1s, and synchronous pulse signals are sent to the wireless phase checking instrument to be tested every 1 s. And after receiving the synchronous pulse signal, the wireless phase checking instrument to be tested takes the last 2 cycles of SV data of the first sampling point after the synchronous pulse to perform a Fourier algorithm, performs time delay compensation and calculates an effective value and a phase angle.
Meanwhile, when the standard wireless phase checking instrument sends a synchronization signal to the wireless phase checking instrument to be detected, a synchronization pulse is also output to the FPGA at the side, the FPGA starts AD (analog-to-digital) to start sampling, 2 cycles of data are collected to carry out a pay algorithm, and an effective value and a phase angle are calculated.
3) Time alignment compensation
(1) Recording the time t1 of the wireless phase detector to be detected receiving the synchronous pulse signal, and the unit s;
(2) analyzing the received SV message to obtain the value of a first channel in the SV message, namely the MU rated time delay;
(3) recording the time t2, in units of s, of the first sample point after the synchronization pulse;
(4) acquiring channel frequency of SV message, and recording as f and unit HZ;
(5) calculating a phase compensation value
φ＝(t2-t1-MURated time delay×10-6)-f×360。
Sequence number alignment compensation method
(1) Analyzing the SV message received by the wireless phase checking instrument to be tested, and acquiring the 0-label time of the SV message, which is recorded as t1 and unit s;
(2) recording the time t2 of the wireless phase detector to be detected for collecting a first point in unit s;
(3) acquiring channel frequency of SV message, and recording as f and unit HZ;
(4) calculating the phase compensation value phi ═ t2-t1)-f×360。
By adopting the wireless radio frequency synchronization technology, the transmission and synchronization of remote data can be realized, the problem that the remote data transmission is asynchronous is effectively solved, and the field detection speed of the intelligent substation during reconstruction and extension or new construction is greatly improved under the condition of ensuring the test accuracy and precision.
Before phase checking, the master wireless phase checking instrument and the slave wireless phase checking instrument need to be timed and enter a synchronous mode to check the phase. When the standard wireless phase checking instrument and the wireless phase checking instrument to be detected reach a synchronous mode, an AD sampling module of the device starts to start A/D sampling according to synchronous second pulse, wherein the FPGA controls 100uS equal intervals to start A/D sampling, 200 point data are sampled by 50Hz signals per cycle, namely the sampling interval is 100 uS.
The wireless phase checking instrument for the intelligent transformer substation based on the ping-pong principle time checking technology is provided, the wireless communication and synchronization technology, the A/D synchronous sampling technology and the hardware system design scheme are explained in detail, laboratory tests and transformer substation actual measurements are carried out, and the result shows that the amplitude measurement precision is superior to 0.5 percent and the phase measurement precision is superior to 0.3 percent no matter the voltage precision or the current precision, so that the wireless phase checking instrument for the intelligent transformer substation based on the ping-pong principle time checking technology can meet the application of field secondary phase checking and can be expanded to other distributed synchronous measurement fields.
With the popularization of 2.4G frequency band application, more and more products use the frequency band, and can carry out address filtering by setting a uniform address for a measuring device and only receiving data of the address to avoid interference of other various wireless devices. Meanwhile, in order to ensure point-to-point reliable communication of the two measuring devices on site, pairing is required before use.
Pairing is achieved by generating random channels and negotiating between the two parties. One side generating the random channel is used as a transmitting side, and the other side is used as a receiving side. After entering the pairing mode, the two parties use a common default channel, the receiving end waits for receiving the random channel information, and the sending end generates random channel data through a random number generator and sends the data by using the default channel. And after receiving the new channel information, the receiving end sends a receiving response and switches the new channel, and the sending end also switches the new channel after receiving the response. And the two parties use the new channel to carry out communication test, then store the channel information and complete pairing.
The sequence numbers in the above embodiments are merely for description, and do not represent the sequence of the assembly or the use of the components.
The above description is only exemplary of the present invention and should not be taken as limiting the invention, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The wireless nuclear phase appearance of intelligent substation secondary, carry out the data synchronization of frequency and phasor through wireless data transmission mode between the wireless nuclear phase appearance, its characterized in that, the data synchronization process includes:
the method comprises the steps that a standard wireless phase checking instrument is controlled to send a synchronous message and a tracking message with a first timestamp to a wireless phase checking instrument to be detected, and a time delay request message fed back by the wireless phase checking instrument to be detected is received;
enabling the standard wireless phase checking instrument to send a delay response message with a time mark based on the received delay request message;
and calculating a correction error by the wireless phase checking instrument to be detected based on the time mark in the delay response message, and controlling the wireless phase checking instrument to be detected to periodically compensate the correction error to realize data synchronization.
2. The intelligent substation secondary wireless phase checking instrument according to claim 1, wherein the control standard wireless phase checking instrument sends a synchronization message and a tracking message with a first timestamp to the wireless phase checking instrument to be tested, and receives a delay request message fed back by the wireless phase checking instrument to be tested, and the delay request message comprises:
the standard wireless nuclear phase instrument sends a synchronous message and a tracking message with a synchronous message sending time mark (t 1);
the wireless phase checking instrument to be detected receives the synchronous message, and the time mark is t 2; receiving the tracking message, reading a synchronous message sending time mark t 1;
recording the time delay from the standard wireless phase checking instrument to the wireless phase checking instrument to be tested as delta ta, namely t2-t 1;
after receiving the tracking message, the wireless phase checking instrument to be tested sends a time delay request message to the standard wireless phase checking instrument, and the time mark of message sending is t 3;
and after the standard wireless phase checking instrument receives the time delay request message sent by the wireless phase checking instrument to be detected, marking the time mark as t 4.
3. The intelligent substation secondary wireless phase checking instrument according to claim 2, wherein the step of enabling the wireless phase checking instrument to be tested to calculate a correction error based on a time scale in the delay response message and control the wireless phase checking instrument to be tested to periodically compensate the correction error to realize data synchronization comprises the steps of:
the wireless phase checking instrument to be detected receives the time delay response message sent by the standard wireless phase checking instrument and extracts the time mark t4 in the time delay response message;
recording the time delay from the wireless phase checking instrument to be tested to the standard wireless phase checking instrument as delta tb, namely t4-t 3;
at the moment, the calculation and correction errors of the wireless phase checking instrument to be detected are as follows: Δ t ═ (Δ ta + Δ tb)/2 ═ ((t2-t1) + (t4-t 3))/2;
and periodically compensating delta t for the wireless phase detector to be detected to track the clock of the standard wireless phase detector.
4. The intelligent substation secondary wireless nuclear phase instrument of claim 1, wherein the data synchronization process further comprises:
and compensating the phase delay in the acquisition process of the analog quantity and the digital quantity.
5. The intelligent substation secondary wireless nuclear phase instrument according to claim 4, wherein the compensation for phase delay in the acquisition process of the analog quantity and the digital quantity comprises:
the synchronous time interval of a wireless radio frequency synchronous module of a standard wireless nuclear phase instrument is set to be 1s, and synchronous pulse signals are sent to the wireless nuclear phase instrument to be tested every 1 s;
after receiving the synchronous pulse signal, the wireless phase checking instrument to be tested takes the last 2 cycles of SV data of the first sampling point after the synchronous pulse to perform Fourier algorithm operation, performs time delay compensation and calculates a first effective value and a first phase angle;
when the standard wireless phase checking instrument sends a synchronization signal to the wireless phase checking instrument to be detected, a synchronization pulse is also output to the FPGA at the side, the FPGA starts AD (analog-to-digital) to start sampling, 2 cycles of data are collected to carry out a quadratic algorithm operation, and a second effective value and a second phase angle are calculated;
and performing phase delay compensation based on the difference value of the first effective value and the second effective value and the difference value of the first phase angle and the second phase angle.
6. The intelligent substation secondary wireless nuclear phase instrument of claim 1, wherein the data synchronization process further comprises:
and performing phase compensation based on the pulse time delay.
7. The intelligent substation secondary wireless nuclear phase instrument according to claim 6, wherein the phase compensation based on pulse delay comprises:
recording the time t1 of the wireless phase detector to be detected receiving the synchronous pulse signal, and the unit s;
analyzing the received SV message to obtain the value of the first channel in the SV message, namely the MURated time delay；
Recording the time t2, in units of s, of the first sample point after the synchronization pulse;
acquiring channel frequency of SV message, and recording as f and unit HZ;
calculating a phase compensation value phi
φ＝(t2-t1-MURated time delay×10-6)-f×360。
8. The intelligent substation secondary wireless nuclear phase instrument of claim 1, wherein the data synchronization process further comprises:
and performing phase compensation based on sequence number alignment.
9. The intelligent substation secondary wireless nuclear phase instrument of claim 8, wherein the performing phase compensation based on sequence number alignment comprises:
analyzing the SV message received by the wireless phase checking instrument to be tested, and acquiring the 0-label time of the SV message, which is recorded as t1 and unit s;
recording the time t2 of the wireless phase detector to be detected for collecting a first point in unit s;
acquiring channel frequency of SV message, and recording as f and unit HZ;
calculating the phase compensation value as phi
φ＝(t2-t1)-f×360。
10. The intelligent substation secondary wireless nuclear phase instrument according to any one of claims 1 to 9, wherein the data synchronization process further comprises:
before phase checking, a master wireless phase checking instrument and a slave wireless phase checking instrument need to perform time synchronization and enter a synchronization mode;
when the standard wireless phase checking instrument and the wireless phase checking instrument to be detected reach a synchronous mode, an AD sampling module of the device starts to start A/D sampling according to synchronous second pulse, wherein the FPGA controls 100uS equal intervals to start A/D sampling, 200 point data are sampled by 50Hz signals per cycle, namely the sampling interval is 100 uS.
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