High-precision wireless nuclear phase device

Abstract

The invention provides a high-precision wireless nuclear phase device, and relates to the technical field of voltage nuclear phase, and the wireless nuclear phase device comprises a to-be-tested end, a reference end, and a first signal collector, a slave, a second signal collector and a host which are all internally provided with wireless radio frequency modules. The first signal collector and the slave computer, the second signal collector and the host computer, and the host computer and the slave computer are communicated through wireless radio frequency modules. According to the high-precision wireless phase checking device, the signal collector and the host are arranged at the to-be-tested end and the reference end respectively, the time information of the power signals of the to-be-tested end and the reference end is obtained through the signal collector, the time information is sent to the slave and the host in a wireless radio frequency mode, then online time difference and phase difference calculation is carried out, and the phase difference is calculated. And the nuclear phase result is obtained, and the nuclear phase is efficient, accurate and safe. During nuclear phase operation, normal operation of a power system is not intervened. Compared with a wired nuclear phase mode, the wireless nuclear phase mode not only saves operation time, but also improves safety.

Description

Technical Field

[0001] The invention relates to the technical field of voltage phase core technology, and in particular to a high-precision wireless phase core device. Background Art

[0002] As people's demand for electricity grows, they also have high requirements for the quality of electricity. In order to avoid accidents and provide users with high-quality electricity, the phase sequence must be measured before each grid is connected to the grid. Only when the phase sequence is the same can they be connected to the grid. This is very important for ensuring the safety, stability and reliability of the system.

[0003] Voltage phase verification is an important basic work in the production and operation of power grids. The current phase verification method is to compare the secondary voltage of the new equipment with the secondary voltage of a selected operating equipment in the substation to check whether the secondary circuit of the AC voltage is correct. If there is an error, the new equipment will not be allowed to access the system with load. Secondary phase verification is the last guarantee to verify whether the secondary voltage of new equipment is correct before it is put into operation. The power system needs to perform this work frequently in actual operation. Therefore, it is of great significance to improve the efficiency of phase verification, reduce the waste of human resources, and improve the safety of work. The current research on phase verification in the existing technology has the following characteristics:

[0004] 1. The primary phase check adopts the direct contact method. The phase check device is placed on the high-voltage power line at the end to be measured and the reference end. When performing the phase check, the high-voltage power line is directly contacted, which poses a great threat to the personal safety of the operator. In addition, the primary phase check requires relatively more operators. If the operators do not cooperate properly, danger will occur.

[0005] 2. Secondary phase checking is a method of measuring the voltage on the busbar with a multimeter. When performing secondary phase checking, more operators and supervisors are required. When performing secondary phase checking, the operator needs to be familiar with the voltage secondary wiring and circuit. If the operation is improper, it may lead to the risk of accidentally touching the running equipment.

[0006] 3. If the distance between the two devices is relatively far, the communication between the two devices becomes a major difficulty. The operators at both locations must use other communication methods or connect the signals of the devices to be tested by wiring. This method increases the workload of the operators and the amount of equipment required.

[0007] Based on this, the present invention is proposed. Summary of the invention

[0008] The purpose of the present invention is to provide a high-precision wireless phase checking device to achieve efficient, safe and accurate phase checking.

[0009] To achieve the above object, the present invention provides the following technical solutions:

[0010] A high-precision wireless phase check device comprises: a test end, a reference end, a first signal collector, a slave, a second signal collector and a host, all of which are equipped with a wireless radio frequency module; the second signal collector and the host, the first signal collector and the slave, and the host and the slave all communicate through the wireless radio frequency module; wherein the test end is connected to the device to be tested; the reference end is connected to the reference device; the second signal collector is arranged at the test end, used to obtain and process the voltage signal of the device to be tested, and send the processed signal to the host; the host is used to receive the signal processed by the second signal collector, obtain the time information T2 of the signal, receive the time information T1 from the slave, calculate the time difference between T2 and T1, calculate the phase difference through the time difference, and obtain the phase check result; the first signal collector is arranged at the reference end, used to obtain and process the voltage signal of the reference device, and send the processed signal to the slave; the slave is used to receive the signal processed by the first signal collector, obtain the time information T1 of the signal and send it to the host.

[0011] In order to facilitate signal processing and transmission, simplify the processing process, improve the phase checking speed, and adapt to the phase checking of different voltage levels, the present invention provides a preferred solution, wherein the first signal collector includes: a first waveform conversion module, which is used to convert the sinusoidal wave voltage signal of the reference device into a square wave voltage signal; the second signal collector includes: a second waveform conversion module, which is used to convert the sinusoidal wave voltage signal of the device to be tested into a square wave voltage signal.

[0012] In order to accurately obtain the phase difference, the present invention provides a preferred solution, wherein the first signal collector also includes: a first zero-crossing point detection module, which is used to detect the time difference between adjacent positive zero-crossing points of the square wave voltage signal of the reference device, which is the time information T1; or, is used to detect the time difference between adjacent negative zero-crossing points of the square wave voltage signal of the reference device, which is the time information T1; the second signal collector also includes: a second zero-crossing point detection module, which is used to detect the time difference between adjacent positive zero-crossing points of the square wave voltage signal of the device to be tested, which is the time information T2; or, is used to detect the time difference T2 between adjacent negative zero-crossing points of the square wave voltage signal of the device to be tested, which is the time information T2.

[0013] In order to achieve longer-distance remote nuclear phase operation, the present invention provides a preferred solution, wherein the wireless radio frequency module adopts a Lora wireless radio frequency module.

[0014] In order to further improve the efficiency of the phase verification work, the present invention provides a preferred solution, an audible and visual reminder, which is used to issue an audible and visual reminder when the phase verification result is obtained, and / or to issue another audible and visual reminder when the phase verification result is inconsistent, and to issue another audible and visual reminder when the phase verification result is consistent.

[0015] In order to further effectively improve the accuracy of phase measurement, the present invention provides a preferred solution, wherein the second signal collector also includes: a frequency measurement module, which is used to detect the frequency data of the power signal of the device to be tested; the host also includes: a comparison and analysis module, which is used to convert the frequency data into time data, and compare it with the standard time data to obtain the time delayed or advanced compared with the standard time data; the wireless phase core device also includes a compensator, which is used to compensate for the delayed or advanced time.

[0016] Compared with the prior art, the above technical solution has the following advantages:

[0017] The high-precision wireless phase check device of the present invention respectively sets a signal collector and a host at the end to be measured and the reference end, respectively obtains the time information of the power signals of the end to be measured and the reference end through the signal collector, and sends the time information to the slave and the host in the form of wireless radio frequency, and then performs online time difference and phase difference calculation to obtain the phase check result. The phase check is efficient, accurate and safe.

[0018] When the high-precision wireless phase-checking device of the present invention is used for phase-checking operation, there is no special intervention in the normal operation of the power system, and normal operation can be maintained. Using the wireless phase-checking device for phase checking, the work can be completed correctly in a relatively short time. The data transmission between the wireless phase-checking devices is completed by wireless radio frequency. Only one staff member can easily operate two instruments, and the work is relatively safe. Compared with the wired phase-checking method, the wireless phase-checking not only saves the time and human resources of the phase-checking operation, but also greatly improves the safety of the work. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0020] Figure 1 This is a module diagram of a high-precision wireless phase-correlation device provided in Example 1 of the present invention;

[0021] Figure 2 A module diagram of a first signal collector in a high-precision wireless phase-correlation device provided in Embodiment 2 of the present invention;

[0022] Figure 3 A module diagram of a second signal collector in a high-precision wireless phase-correlation device provided in Embodiment 2 of the present invention;

[0023] Figure 4A flow chart of the time difference of capturing adjacent positive zero-crossing points in the high-precision wireless phase core device provided in Example 2 of the present invention;

[0024] Figure 5 A flow chart of the time difference of capturing adjacent negative zero-crossing points in the high-precision wireless phase core device provided in Example 2 of the present invention;

[0025] Figure 6 A module diagram of a host in a high-precision wireless phase-correlation device provided in Example 2 of the present invention;

[0026] Figure 7 This is a module diagram of the high-precision wireless phase detection device provided in Example 3 of the present invention.

[0027] The accompanying drawings are marked as follows: reference device 100, device to be tested 200, wireless phase verification device 300, reference end 310, end to be tested 320, first signal collector 330, first wireless radio frequency module 331, first waveform transformation module 332, first reverse attenuation module 333, first saturation amplification module 334, first zero-crossing detection module 335, second signal collector 340, second wireless radio frequency module 341, second waveform transformation module 342, second reverse attenuation module 343, second saturation amplification module 344, second zero-crossing detection module 345, frequency measurement module 346, slave 350, third wireless radio frequency module 351, host 360, fourth wireless radio frequency module 361, calculation module 362, phase verification result generation module 363, comparison and analysis module 364, control module 365, compensator 370, sound and light reminder 380. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Example 1

[0030] Please refer to Figure 1This embodiment provides a high-precision wireless phase nuclear device 300, which is mainly composed of the following parts: a test end 320, a reference end 310, and a first signal collector 330, a slave 350, a second signal collector 340 and a host 360, all of which have built-in wireless radio frequency modules. Specifically, a first wireless radio frequency module 331 is set inside the first signal collector 330, a second wireless radio frequency module 341 is set inside the second signal collector 340, a third wireless radio frequency module 351 is set inside the slave 350, and a fourth wireless radio frequency module 361 is set inside the host 360. The host 360 and the slave 350 preferably use a single-chip microcomputer.

[0031] The first signal collector 330 and the slave 350, the second signal collector 340 and the host 360, and the host 360 and the slave 350 all communicate through the wireless radio frequency module; wherein the reference end 310 is connected to the reference device 100; the test end 320 is connected to the test device 200; the first signal collector 330 is arranged at the reference end 310, and is used to obtain and process the voltage signal of the reference device 100, and send the processed signal to the slave 350; the slave 350 is used to receive the voltage signal from the first signal collector The signal processed by the detector 330 is used to obtain the time information T1 of the signal and send it to the host 360; the second signal collector 340 is set at the test end 320, and is used to obtain and process the voltage signal of the device under test 200, and send the processed signal to the host 360; the host 360 is used to receive the signal processed by the second signal collector 340, obtain the time information T2 of the signal, receive the time information T1 from the slave 350, calculate the time difference between T2 and T1, calculate the phase difference through the time difference, and obtain the phase verification result.

[0032] The wireless phase-checking device 300 of this embodiment is provided with a signal collector and a host 360 at the end to be tested 320 and the reference end 310, respectively. The time information of the power signals of the end to be tested 320 and the reference end 310 is obtained by the signal collector, and the time information is sent to the slave 350 and the host 360 in the form of wireless radio frequency, and then the online time difference and phase difference calculation are performed to obtain the phase-checking result. The phase-checking is efficient, accurate and safe. When the wireless phase-checking device 300 of this embodiment is used for phase-checking operation, there is no special intervention in the normal operation of the power system, and normal operation can be maintained. The phase-checking of the wireless phase-checking device 300 of this embodiment can correctly complete the work in a short time. The data transmission between the wireless phase-checking devices 300 is completed by wireless radio frequency, and only one staff member can easily operate two instruments, and the work is relatively safe. Compared with the wired phase-checking method, the wireless phase-checking not only saves the time and human resources of the phase-checking operation, but also greatly improves the safety of the work.

[0033] Example 2

[0034] This embodiment adds the following preferred scheme on the basis of embodiment 1: This embodiment provides a more preferred high-precision wireless phase nuclear device 300, wherein the first wireless radio frequency module 331, the second wireless radio frequency module 341, the third wireless radio frequency module 351 and the fourth wireless radio frequency module 361 all adopt Lora wireless radio frequency modules. The Lora wireless radio frequency module has strong anti-interference and high speed, and is very suitable for long-distance data transmission, ensuring remote phase nuclear work, further solving the problem that traditional phase nuclear work cannot be carried out at a long distance, and improving the measurement accuracy at the same time. The first signal collector 330 and the second signal collector 340 are provided with metal probes, which are hung on the power line to obtain the voltage signal, and belong to a voltage sensor. The voltage sensor obtains the voltage signal of the power line, which is an existing mature technology, and the present invention will not be repeated here.

[0035] Please refer to Figure 2 The first signal collector 330 is also provided with a first reverse attenuation module 333, a first saturation amplification module 334, a first waveform transformation module 332 and a first zero-crossing detection module 335. The first reverse attenuation module 333 is used to adjust the amplitude of the sine wave voltage signal of the reference device 100; the first saturation amplification module 334 is used to amplify the sine wave voltage signal of the reference device 100 to enhance the signal; the first waveform transformation module 332 is used to convert the sine wave voltage signal of the reference device 100 into a square wave voltage signal; the first zero-crossing detection module 335 is used to detect the time difference of adjacent positive zero-crossing points of the square wave voltage signal of the reference device 100, which is the time information T1; or, to detect the time difference of adjacent negative zero-crossing points of the square wave voltage signal of the reference device 100, which is the time information T1. The sine wave voltage signal of the reference device 100 obtained from the reference terminal 310 is first processed by the first reverse attenuation module 333 and then processed by the first saturation amplification module 334.

[0036] Please refer to Figure 3The second signal collector 340 is also provided with a second reverse attenuation module 343, a second saturation amplification module 344, a second waveform transformation module 342 and a second zero-crossing detection module 345. The second reverse attenuation module 343 is used to adjust the amplitude of the sinusoidal voltage signal of the device under test 200; the second saturation amplification module 344 is used to amplify the sinusoidal voltage signal of the device under test 200 to enhance the signal; the second waveform transformation module 342 is used to convert the sinusoidal voltage signal of the device under test 200 into a square wave voltage signal; the second zero-crossing detection module 345 is used to detect the time difference between adjacent positive zero-crossing points of the square wave voltage signal of the device under test 200, which is the time information T2; or, the time difference T2 between adjacent negative zero-crossing points of the square wave voltage signal of the device under test 200 is used to detect the time difference T2 between adjacent negative zero-crossing points of the square wave voltage signal of the device under test 200, which is the time information T2. The sinusoidal voltage signal of the device under test 200 obtained from the test end 320 is first processed by the second reverse attenuation module 343 , then processed by the second saturation amplification module 344 , and then processed by the second waveform transformation module 342 and the second zero-crossing detection module 345 in sequence.

[0037] In order to prevent excessive voltage signals from damaging circuit components, the sine wave voltage signal is passed through a reverse attenuation module to reduce the amplitude of the voltage signal, thereby protecting other components in the circuit from the impact of excessive voltage. In the power system, it is very important to accurately measure the AC voltage. However, due to the influence of various factors, the actual measured voltage signal may have certain errors. By introducing reverse attenuation, the amplitude of the voltage signal can be reduced, thereby reducing the measurement error and improving the accuracy of the measurement. At the same time, reverse attenuation can also help eliminate high-frequency noise and interference in the signal, further improving the stability and reliability of the measurement. After the reverse attenuated signal is saturated and amplified, the signal amplitude can be amplified to the required level while ensuring that the signal is not distorted, so as to meet the input requirements of subsequent circuits or equipment. Saturated amplification can further suppress noise and interference while amplifying the signal, thereby obtaining a clearer and more stable signal output. As a pre-protection measure, reverse attenuation can effectively reduce the amplitude of the signal input to the amplifier, preventing the amplifier from entering the nonlinear working area or saturation area due to excessive input signals, thereby avoiding circuit damage or performance degradation. By combining reverse attenuation and saturation amplification, it is possible to ensure that the circuit maintains a stable working state when the input signal changes, thereby improving the circuit's anti-interference ability and stability.

[0038] Please refer to Figure 4 , a method is given in which the first zero-crossing point detection module 335 / the second zero-crossing point detection module 345 captures the time difference of adjacent positive zero-crossing points, using the following steps:

[0039] S1 initialization;

[0040] S2 captures the positive zero-crossing signal;

[0041] S3 determines whether a positive zero-crossing signal is captured;

[0042] When S4 captures the positive zero-crossing signal, it starts timing;

[0043] S5 determines whether the positive zero-crossing signal is captured again;

[0044] When S6 captures the positive zero-crossing signal again, the timing ends;

[0045] S7 obtains the time difference between adjacent positive zero-crossing points.

[0046] Please refer to Figure 5 , a method is given in which the first zero-crossing point detection module 335 / the second zero-crossing point detection module 345 captures the time difference of adjacent negative zero-crossing points, using the following steps:

[0047] S1' initialization;

[0048] S2' captures the negative zero-crossing signal;

[0049] S3' determines whether a negative zero-crossing signal is captured;

[0050] S4' starts timing when capturing a negative zero-crossing signal;

[0051] S5' determines whether a negative zero-crossing signal is captured again;

[0052] S6' ends the timing when the negative zero-crossing signal is captured again;

[0053] S7' obtains the time difference between adjacent negative zero-crossing points.

[0054] Please refer to Figure 6 In this embodiment, in addition to the fourth wireless radio frequency module 361, the host 360 is also provided with a calculation module 362 and a phase check result generation module 363, wherein the calculation module 362 is used to calculate the phase difference according to the time difference of adjacent positive zero crossing points / the time difference of adjacent negative zero crossing points. The phase check result generation module 363 is used to generate a phase check result according to the calculated phase difference result.

[0055] The high-precision wireless phase-reduction device 300 of the present embodiment is mainly composed of a reference end 310 and a terminal to be measured 320. During operation, the signal collectors at both ends will collect the positive zero-crossing signal or the negative zero-crossing signal of the measured line. The collected positive zero-crossing signal or the negative zero-crossing signal will be sent to the corresponding slave 350 / host 360. When the slave 350 / host 360 receives the positive zero-crossing signal or the negative zero-crossing signal, the time difference will be calculated in combination with the received information. After the slave 350 and the host 360 of the reference end 310 and the terminal to be measured 320 have completed this operation, the phase-reduction result is finally obtained by comparing and calculating the time difference obtained at both ends, so as to judge the phase situation of the measured line and realize the function of remote wireless high-voltage phase-reduction. This design provides a convenient and accurate detection method for the phase-reduction work of the high-voltage line.

[0056] The wireless phase detection device 300 of this embodiment adopts a phase detection method that combines waveform transformation with zero-crossing point detection. It first converts the voltage signal into a square wave, and then detects the positive zero-crossing point to calculate the phase difference. The amplitude effect can be ignored. It breaks through the limitations of traditional phase detection methods and can accurately realize the phase detection function in a variety of different voltage level environments. Whether it is a power system with a lower voltage level or a complex power grid with a high voltage level, this method has shown extremely high adaptability and reliability, providing a more efficient and accurate solution for high-voltage phase detection work, greatly improving the quality and efficiency of phase detection work, and ensuring the safe and stable operation of the power system under different voltage scenarios.

[0057] Example 3

[0058] Please refer to Figure 7, the following preferred scheme is added on the basis of Example 1: in addition to the fourth wireless radio frequency module 361, the calculation module 362 and the phase verification result generation module 363, the host 360 is also provided with a control module 365 and a comparison and analysis module 364. A frequency measurement module 346 is also provided inside the second signal collector 340. The wireless phase verification device 300 is also provided with a compensator 370 and an audible and visual reminder 380. Among them, the frequency measurement module 346 is used to detect the frequency data of the power signal of the device to be tested 200. The comparison and analysis module 364 is used to convert the frequency data into time data, compare it with the standard time data, and obtain the time delayed or advanced compared with the standard time data. The compensator 370 is used to compensate for the delayed or advanced time. The audible and visual reminder 380 is used to issue an audible and visual reminder when the phase verification result is obtained to remind the end of the phase verification. Of course, in a more preferred embodiment, the sound and light reminder 380 can distinguish different sounds and lights to give different nuclear phase results, and issue reminders of different colors and sounds when the nuclear phase results are inconsistent or consistent. The control module 365 is used to control the sound and light reminder 380 to issue corresponding sound and light reminders according to the nuclear phase results generated by the nuclear phase result generation module 363, and is also used to control the compensator 370 to compensate for the delayed or advanced time according to the delayed or advanced time data obtained by the comparison and analysis module 364. The sound and light reminder 380 can use LED lights and buzzers.

[0059] The wireless phase-conversion device 300 of this embodiment uses frequency measurement and frequency compensation frequency conversion technology to further effectively improve the accuracy of phase measurement. The operating state of the power grid is in dynamic change, and even extremely small fluctuations are happening all the time. In view of this situation, the wireless phase-conversion device 300 of this embodiment can accurately measure the frequency of the power signal of the device under test. In this process, the frequency information of the power signal is accurately captured, and then the acquired frequency data is converted into corresponding time data through an algorithm. These converted time data are used to scientifically and reasonably compensate the measurement results, thereby effectively eliminating the errors caused by small changes in the power grid frequency, greatly improving the accuracy of the phase-conversion, and ensuring the high-quality completion of the phase-conversion work.

[0060] The wireless phase checking device 300 of this embodiment uses sound and light reminders to complete the phase checking work. The operation method is simple and clear, which avoids the extension of working time due to complicated operations and is suitable for front-line power workers to quickly get started.

[0061] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0062] The above-described embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A high-precision wireless phase detection device, characterized in that: include: The end to be tested, the reference end, and the first signal collector, the slave, the second signal collector and the host, all of which have built-in wireless radio frequency modules; The first signal collector and the slave, the second signal collector and the host, and the host and the slave all communicate via a wireless radio frequency module; wherein, Reference terminal, connected to the reference device; The end to be tested is connected to the device to be tested; A first signal collector is provided at the reference end, and is used to acquire and process the voltage signal of the reference device, and send the processed signal to the slave device; The slave is used to receive the signal processed by the first signal collector, obtain the time information T1 of the signal and send it to the host; The second signal collector is arranged at the end to be tested, and is used to obtain and process the voltage signal of the device to be tested, and send the processed signal to the host; The host is used to receive the signal processed by the second signal collector, obtain the time information T2 of the signal, receive the time information T1 from the slave, calculate the time difference between T2 and T1, calculate the phase difference through the time difference, and obtain the phase verification result.

2. The high-precision wireless phase detection device according to claim 1, characterized in that: The first signal collector includes: a first waveform conversion module for converting the sinusoidal voltage signal of the reference device into a square wave voltage signal; the second signal collector includes: a second waveform conversion module for converting the sinusoidal voltage signal of the device under test into a square wave voltage signal.

3. The high-precision wireless phase detection device according to claim 2, characterized in that: The first signal collector also includes: a first zero-crossing detection module, which is used to detect the time difference between adjacent positive zero-crossing points of the square wave voltage signal of the reference device, which is the time information T1; or, it is used to detect the time difference between adjacent negative zero-crossing points of the square wave voltage signal of the reference device, which is the time information T1; the second signal collector also includes: a second zero-crossing detection module, which is used to detect the time difference between adjacent positive zero-crossing points of the square wave voltage signal of the device to be tested, which is the time information T2; or, it is used to detect the time difference T2 between adjacent negative zero-crossing points of the square wave voltage signal of the device to be tested, which is the time information T2.

4. The high-precision wireless phase detection device according to claim 1, 2 or 3, characterized in that: The first signal collector also includes: a first reverse attenuation module for adjusting the amplitude of the sinusoidal voltage signal of the reference device; the second signal collector also includes: a second reverse attenuation module for adjusting the amplitude of the sinusoidal voltage signal of the device under test.

5. The high-precision wireless phase detection device according to claim 4, characterized in that: The first signal collector also includes: a first saturation amplification module, which is used to amplify the sinusoidal voltage signal of the reference device and enhance the signal; the second signal collector also includes: a second saturation amplification module, which is used to amplify the sinusoidal voltage signal of the device under test and enhance the signal.

6. The high-precision wireless phase detection device according to claim 5, characterized in that: The sine wave voltage signal of the reference device / the sine wave voltage signal of the device under test obtained from the reference end / the end under test is first processed by the first reverse attenuation module / the second reverse attenuation module, and then processed by the first saturation amplification module / the second saturation amplification module.

7. The high-precision wireless phase detection device according to claim 3, characterized in that: The specific manner in which the first zero-crossing detection module / the second zero-crossing detection module detects the time difference of adjacent positive zero-crossing points or the time difference of adjacent negative zero-crossing points includes the following: initialization; Capture positive / negative zero-crossing signals; Determine whether the positive / negative zero-crossing signal is captured; When the positive / negative zero-crossing signal is captured, the timing starts; Determine whether the positive / negative zero-crossing signal is captured again; When the positive / negative zero-crossing signal is captured again, the timing ends; The time difference between adjacent positive zero crossings / the time difference between adjacent negative zero crossings.

8. The high-precision wireless phase-correlation device according to claim 1, 2, 3 or 7, characterized in that: The wireless radio frequency module adopts a Lora wireless radio frequency module.

9. The high-precision wireless phase-correlation device according to claim 1, 2, 3 or 7, characterized in that: Also includes: The sound and light reminder is used to issue a sound and light reminder when the nuclear phase result is obtained, and / or to issue another sound and light reminder when the nuclear phase result is inconsistent, and to issue another sound and light reminder when the nuclear phase result is consistent.

10. The high-precision wireless phase-correlation device according to claim 1, 2, 3 or 7, characterized in that: The second signal collector also includes: a frequency measurement module, which is used to detect the frequency data of the power signal of the device to be tested; the host also includes: a comparison and analysis module, which is used to convert the frequency data into time data, compare it with the standard time data, and obtain the time delayed or advanced compared with the standard time data; the wireless phase core device also includes a compensator, which is used to compensate for the delayed or advanced time.

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