Mobile station domain vector testing device

Abstract

The invention provides a mobile station domain vector testing device, and relates to the technical field of secondary phasor testing, and the device comprises a volt-ampere detector which is used for being connected to a secondary voltage equipotential position to collect a reference voltage or a reference current during measurement; the at least one volt-ampere detector is connected to the terminal to be detected to detect current or voltage during measurement; each volt-ampere detector comprises a detection head, a volt-ampere meter and a wireless communication module, and the wireless communication module is used for sending current or voltage data detected by the volt-ampere meter to the intelligent watch; the smart watch determines a phasor test result according to the measurement result of the secondary voltage equipotential position and the measurement result of the to-be-tested terminal; each smart watch is also used for sending the determined phasor test result to the smart terminal; and the intelligent terminal is used for receiving the phasor test results uploaded by the intelligent watches and carrying out phase checking and analysis on the phasor test results. According to the scheme, single-person phasor test operation and analysis of station domain test data can be realized.

Description

Technical Field

[0001] The invention relates to the technical field of secondary phasor testing, and in particular to a mobile station domain vector testing device. Background Art

[0002] When a new substation is put into operation or the entire interval of the substation is expanded, the load-side substation needs to measure the phase quantity in a large number of intervals and the corresponding number of measured devices is huge. For example, when measuring the phase quantity of a single newly-put-into-operation 330kV main transformer, there are about 50 locations that need to be measured. With the urgent commissioning task, the on-site measurement work is time-sensitive and the task is heavy.

[0003] At present, when performing phasor measurement, it is necessary for the measurement personnel at the indoor protection device and the on-site measurement personnel to cooperate and compare the measurement results. Since the indoor current transformer is often installed at a relatively high position, when the measurement personnel short-circuit the secondary winding at the root of the current transformer and measure the current on the short-circuit wire, only one person can do the short-circuit operation and one person can check the current reading on the instrument. The work efficiency is slow, and it is impossible for one person to complete the measurement operation, that is, it is impossible for one person to perform the wiring operation and check the measurement results at the same time.

[0004] In addition, in actual phasor testing, it is often necessary to analyze and compare the measurement data of different stations. However, the current volt-ampere phasor test equipment can only measure within one station, and the measurement data between stations cannot be viewed at the same time. This also leads to the secondary side phasor only being able to analyze the data within one station, and it is difficult to analyze the station area at the same time, which is not conducive to the secondary voltage and current phase core and data analysis with the power supply side substation. Summary of the invention

[0005] In view of this, in order to address the above shortcomings, it is necessary to propose a mobile station-domain vector test device to realize single-person phasor test operations and the analysis of station-domain test data.

[0006] The present invention provides a mobile station domain phasor test device, which includes: N groups of phasor detection devices, N smart watches and smart terminals, where N is an integer not less than 2; the i-th group of phasor detection devices is wirelessly connected to the i-th smart watch, and each smart watch is wirelessly connected to the smart terminal; Each group of the phasor detection equipment includes at least two volt-ampere detectors, and one of the volt-ampere detectors is used to be connected to the secondary voltage equipotential point during measurement to collect a reference voltage or a reference current; at least one volt-ampere detector is used to be connected to the terminal to be measured during measurement to detect the current or voltage; each of the volt-ampere detectors includes a detection head, a volt-ampere meter and a wireless communication module, the volt-ampere meter is respectively connected to the detection head and the wireless communication module, and the wireless communication module is used to send the current or voltage data detected by the volt-ampere meter to the smart watch; The smart watch is used to receive the current or voltage data uploaded by the two volt-ampere detectors of the corresponding phasor detection device, and determine the phasor test result according to the measurement result of the secondary voltage equipotential point and the measurement result of the terminal to be tested; each smart watch is also used to send the determined phasor test result to the smart terminal; The smart terminal is used to receive the phasor test results uploaded by each smart watch, and perform phase verification and analysis on each phasor test result.

[0007] Preferably, each group of phasor detection equipment includes a first volt-ampere detector and a second volt-ampere detector; when measuring voltage, the detection head of the first volt-ampere detector is connected to the secondary voltage equipotential point to collect the reference voltage; the detection head of the second volt-ampere detector contacts the terminal to be measured to collect voltage data.

[0008] Preferably, the phasor detection device also includes a third volt-ampere detector; when measuring current, the detection head of the first volt-ampere detector is connected to the secondary voltage equipotential to collect a reference current; the A terminal and the B terminal of the current to be tested are connected by a first short-circuit wire, the front end of the second volt-ampere detector detection head and the front end of the third volt-ampere detector detection head are overlapped, and after embracing the first short-circuit wire, the tail end of the second volt-ampere detector detection head and the tail end of the third volt-ampere detector detection head are connected by a second short-circuit wire to collect current data.

[0009] Preferably, the second volt-ampere detector also includes an auxiliary connecting line, one end of which is connected to the negative terminal of the volt-ampere meter of the second volt-ampere detector, and the other end is a free end; when measuring the current at the AB terminal, the detection head of the first volt-ampere detector is connected to the secondary voltage equipotential to collect the reference current; the detection head of the second volt-ampere detector is connected to the A terminal, and the free end of the auxiliary connecting line is connected to the B terminal to collect current data.

[0010] Preferably, the volt-ampere detector is provided with a slot, and the auxiliary connecting line can be inserted into the slot.

[0011] Preferably, when performing phase checking and analysis across substations, the smart terminal sends timing instructions to the smart watches corresponding to the phasor detection equipment for phasor testing in each substation; each smart watch performs timing according to the received timing instructions, and issues a timing completion prompt after the timing is completed, so that the operating personnel can operate the phasor detection equipment to perform phasor testing when they see the timing completion prompt.

[0012] Preferably, the smart watch includes a report generation module, which is used to generate a test report according to a preset template format based on the current or voltage data uploaded by the phasor detection device.

[0013] Preferably, the front end of the detection head of each of the volt-ampere detectors is configured as a jaw structure.

[0014] Preferably, an insulating anti-fall shell is provided on the outside of each group of the phasor detection devices.

[0015] Preferably, the smart watch also has a photographing function, which is used to take pictures of the image data in the CT root junction box and upload them to the smart terminal.

[0016] It can be seen from the above technical scheme that the mobile station domain phasor test device provided by the embodiment of the present invention includes N groups of phasor detection equipment, N smart watches and smart terminals, and each group of phasor detection equipment is wirelessly connected to a smart watch, and each smart watch is wirelessly connected to the smart terminal. Each group of phasor detection equipment includes at least two volt-ampere detectors, one of which is used to collect reference voltage or reference current at the secondary voltage equipotential point, and the other is used to connect to the terminal to be tested to detect the current or voltage. The volt-ampere detector can specifically include a detection head, a volt-ampere meter and a wireless communication module. The detection head is used to connect the terminal, the volt-ampere meter is used to detect voltage or current, and the wireless communication module can send the detection results to the corresponding smart watch, so that the operator can wear the smart watch and check the detection results from the smart watch while performing the wiring operation, that is, a single person can complete the phasor test operation, and no longer needs the cooperation of multiple people, which greatly liberates the labor force and improves work efficiency. Furthermore, each smart watch will send the phasor test results to the smart terminal. By receiving the phasor test results from each station area through the smart terminal, the test data between station areas can be analyzed, thereby achieving the purpose of phase verification and analysis of voltages and currents in different station areas. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of a mobile station domain phasor testing device provided in an embodiment of the present invention.

[0018] Figure 2 A schematic diagram of a second volt-ampere detector provided in an embodiment of the present invention.

[0019] Figure 3 A cross-sectional view of a second volt-ampere detector provided in an embodiment of the present invention.

[0020] In the figure: a phasor detection device 10, a first volt-ampere detector 11, a second volt-ampere detector 12, a detection head 111, a volt-ampere meter 112, a wireless communication module 113, a card slot 114, an auxiliary connecting line 115, a smart watch 20, and a smart terminal 30. DETAILED DESCRIPTION

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] See also Figure 1-3 The embodiment of the present invention provides a mobile station domain phasor test device, which includes: N groups of phasor detection devices 10, N smart watches 20 and smart terminals 30, where N is an integer not less than 2; the i-th group of phasor detection devices 10 is wirelessly connected to the i-th smart watch 20, and each smart watch 20 is wirelessly connected to the smart terminal 30; Each set of phasor detection equipment 10 includes at least two volt-ampere detectors, and one of the volt-ampere detectors is used to be connected to the secondary voltage equipotential point during measurement to collect a reference voltage or a reference current; at least one volt-ampere detector is used to be connected to the terminal to be measured during measurement to detect the current or voltage; each volt-ampere detector includes a detection head 111, a volt-ampere meter 112 and a wireless communication module 113, the volt-ampere meter 112 is respectively connected to the detection head 111 and the wireless communication module 113, and the wireless communication module is used to send the current or voltage data detected by the volt-ampere meter 112 to the smart watch 20; The smart watch 20 is used to receive the current or voltage data uploaded by the two volt-ampere detectors of the corresponding phasor detection device 10, and determine the phasor test result according to the measurement result at the secondary voltage equipotential point and the measurement result of the terminal to be tested; each smart watch 20 is also used to send the determined phasor test result to the smart terminal 30; The smart terminal 30 is used to receive the phasor test results uploaded by each smart watch 20, and perform phase verification and analysis on each phasor test result.

[0023] In the embodiment of the present invention, the volt-ampere detector specifically includes a detection head 111, a volt-ampere meter 112 and a wireless communication module 113. The detection head 111 is used for connecting terminals, the volt-ampere meter 112 is used for voltage or current detection, and the wireless communication module 113 can send the detection results to the corresponding smart watch 20, so that the operator can wear the smart watch 20 and view the detection results from the smart watch 20 while performing wiring operations, that is, a single person can complete the phasor test operation, and no longer requires the cooperation of multiple people, which greatly liberates labor and improves work efficiency. Further, each smart watch 20 will send the phasor test results to the smart terminal 30, so that the phasor test results from each station area are received by the smart terminal 30, and the test data between the station areas can be analyzed, thereby achieving the purpose of phase verification and analysis of voltages and currents in different station areas.

[0024] It should be noted that the wireless communication module 113 may be integrated into the voltammeter 112 .

[0025] In one embodiment, each group of phasor detection equipment 10 may include a first volt-ampere detector 11 and a second volt-ampere detector 12; when performing voltage measurement, the detection head 111 of the first volt-ampere detector 11 is connected to the secondary voltage equipotential point for collecting the reference voltage; the detection head 111 of the second volt-ampere detector 12 contacts the terminal to be measured to collect voltage data.

[0026] When measuring current, the phasor detection device 10 may also include a third volt-ampere detector. At this time, the detection head 111 of the first volt-ampere detector 11 is connected to the secondary voltage equipotential point to collect the reference current; the A terminal and the B terminal of the current to be tested are connected by a first short-circuit wire, the front end of the detection head 111 of the second volt-ampere detector 12 and the front end of the detection head 111 of the third volt-ampere detector are overlapped, and after embracing the first short-circuit wire, the tail end of the detection head 111 of the second volt-ampere detector 12 and the tail end of the detection head 111 of the third volt-ampere detector are connected by a second short-circuit wire to collect current data. In this way, based on the principle of detecting mutual inductance current, the detection of the current flowing between the AB terminals can be realized.

[0027] Of course, in one embodiment, it is also possible to directly connect the test device to the loop of the AB terminal for current detection. Specifically, the second volt-ampere detector 12 may also include an auxiliary connecting line 115, one end of which is connected to the negative terminal of the volt-ampere meter 112 of the second volt-ampere detector 12, and the other end is a free end; when measuring the current of the AB terminal, the detection head 111 of the first volt-ampere detector 11 is connected to the secondary voltage equipotential to collect the reference current; the detection head 111 of the second volt-ampere detector 12 is connected to the A terminal, and the free end of the auxiliary connecting line 115 is connected to the B terminal to collect current data.

[0028] In this embodiment, it is considered to set an auxiliary connecting line 115 on the second volt-ampere detector 12, one end of the auxiliary connecting line 115 is connected to the negative end of the volt-ampere meter 112 of the second volt-ampere detector 12, and the other end is a free end. In this way, when measuring the current, the detection head 111 of the first volt-ampere detector 11 can be connected to the secondary voltage equipotential to collect the reference current, and the detection head 111 of the second volt-ampere detector 12 is connected to the A terminal, and the free end of the auxiliary connecting line 115 is connected to the B terminal, so that a loop can be formed, and then the current flowing through the AB terminal can be collected. Since this method directly collects the loop current, the test result error is smaller and has higher detection accuracy.

[0029] Of course, the free end of the auxiliary connecting wire 115 can be set as a jaw structure to facilitate clamping the terminal when connecting the terminal. The auxiliary connecting wire can be set as a pull-out type, that is, the wire can be pulled out from the inside of the second volt-ampere detector to meet the connection requirements within a certain distance.

[0030] In addition, it is conceivable to provide a card slot 114 on the second volt-ampere detector 12, and the auxiliary connecting wire 115 can be inserted into the card slot 114. In this way, when the auxiliary connecting wire 115 is used, the auxiliary connecting wire 115 is pulled out from the card slot 114, and when it is not used, the auxiliary connecting wire 115 is pressed into the card slot 114, so that the second volt-ampere detector 12 maintains a simple and compact structure, and when the auxiliary connecting wire 115 is not needed, the auxiliary connecting wire 115 will not affect the normal test operation.

[0031] It is easy to understand that the first volt-ampere detector 11 and the second volt-ampere detector 12 should at least include a detection head 111, a volt-ampere meter 112 and a wireless communication module 113 for normal detection. In some embodiments, a card slot 114 and an auxiliary connector 115 can also be provided on the first volt-ampere detector, so that the operator does not need to distinguish between the first volt-ampere detector 11 and the second volt-ampere detector 12, that is, they can be used interchangeably.

[0032] In one embodiment, when performing phase checking and analysis across substations, the smart terminal 30 can send timing instructions to the smart watches 20 corresponding to the phasor detection devices 10 of each substation that performs phasor testing; each smart watch 20 performs timing according to the received timing instructions, and issues a timing completion prompt after the timing is completed, so that the operating personnel can operate the phasor detection device 10 to perform the phasor test when they see the timing completion prompt.

[0033] In this embodiment, when performing phase checking and data analysis across substations, it is considered to send a time synchronization instruction to the smart watches 20 in each substation through the Zhongneng terminal. In this way, after the smart watches 20 corresponding to each substation perform the time synchronization operation according to the time synchronization instruction, the data collected by the phasor test equipment can be uploaded to the smart terminal 30 after the smart watch 20 carries the time tag. When analyzing the data between substations, the smart terminal 30 can analyze and check the phase of the data at the same time according to the time tag, ensuring the accuracy of the secondary voltage and current phase checking and data analysis.

[0034] In one embodiment, the smart watch 20 may also include a report generation module, which is used to generate a test report according to a preset template format based on the current or voltage data uploaded by the phasor detection device 10, and store the report, so that the operator can view it at any time.

[0035] In one embodiment, in order to ensure that the detection head 111 of the volt-ampere detector 11 has good contact with the terminal when connecting, and to avoid the situation where poor contact affects the test effect, it is considered to set the front end of the detection head 111 of the volt-ampere detector 11 as a jaw structure. In this way, when connecting, the operator can clamp the detection head 111 on the terminal to ensure good contact with the terminal.

[0036] Since the wiring operation needs to be performed at a high place, the test equipment often falls in practice, resulting in the device being broken. In this solution, the smart watch 20 can be worn on the wrist of the operator and will not fall. For the vector detection device, consider setting an insulating anti-fall shell on the outside of the vector detection device, that is, setting an insulating anti-fall shell on the outside of the volt-ampere detector 11 to prevent the device from falling and being damaged.

[0037] In one embodiment, the smart watch 20 also has a shooting function, which is used to shoot the image data in the CT root junction box and upload it to the smart terminal 30. By shooting the image in the CT root junction box and uploading it to the smart terminal 30, the terminal and site identification can be further performed, so as to match and verify the detection site information and data.

[0038] In summary, the mobile station domain phasor testing device provided by the present invention has at least the following beneficial effects: (1) By wearing a smart watch 20, the operator can complete the phase measurement operation alone, and no longer needs the cooperation of multiple people, which frees up manpower and improves work efficiency.

[0039] (2) During measurement, multiple groups of phasor detection devices 10 can perform measurements at different locations at the same time. Each volt-ampere detector 11 sends the detected data to the smart watch 20 worn by the detection personnel through the internal wireless function. The operator can view the data collected each time through the smart watch 20 at the first time, and no longer needs to stare at the display device such as the mobile phone screen.

[0040] (3) During measurement, all measured data (various formats of fixed recorded data) can be viewed on mobile phones and other terminal devices through communication connections, and the vector diagram after phasor testing can be directly displayed through the configured software program to analyze the power flow direction in the station, determine whether the power flow and phase sequence in the station are correct, and save the measured data. The saved formats can include PDF, WOR, pictures, etc.

[0041] (4) During measurement, the measurement personnel in the load-side substation and the power-side substation can agree to measure the phase quantity of the same line at the same time, and use the smart watch 20 to view the data collected at both ends of the load-side substation and the power-side substation in real time, so as to determine whether the phase sequence and power flow of the corresponding line between the two stations are correct, and more accurately verify that the secondary phase sequence, primary phase sequence and power flow of the measured line are accurate, ensuring the normal operation of the commissioning interval.

[0042] (5) During use, each set of phasor detection devices 10 corresponds to each smart watch 20 one by one, and different test leads can be paired by setting on the smart watch 20; each set of detection leads sends all data to the wireless station domain phasor tester APP software through the wireless function. As long as the wireless station domain phasor tester APP software is downloaded on the mobile phone, the real-time data can be seen and the saved data can be retrieved by adding and setting the corresponding phasor stations.

[0043] (6) Through the wireless station phase tester APP software, the saved data is analyzed by the software program and a specific report is automatically generated to facilitate data archiving.

[0044] (7) By sending a time synchronization instruction to each smart watch 20 through the smart terminal 30, the data of each site at the same time can be analyzed and checked, ensuring the accuracy of the secondary voltage and current phase checking and data analysis.

[0045] The modules or units in the device of the embodiment of the present invention can be combined, divided and deleted according to actual needs. The above disclosure is only the preferred embodiment of the present invention, and of course it cannot be used to limit the scope of the rights of the present invention. Those skilled in the art can understand that all or part of the processes of the above embodiment are implemented, and the equivalent changes made according to the claims of the present invention still fall within the scope of the invention.

Claims

1. A mobile station domain phasor test device, characterized in that: The device comprises: N groups of phasor detection devices, N smart watches and smart terminals, where N is an integer not less than 2; the i-th group of phasor detection devices is wirelessly connected to the i-th smart watch, and each smart watch is wirelessly connected to the smart terminal; Each group of the phasor detection equipment includes at least two volt-ampere detectors, and one of the volt-ampere detectors is used to be connected to the secondary voltage equipotential point during measurement to collect a reference voltage or a reference current; at least one volt-ampere detector is used to be connected to the terminal to be measured during measurement to detect the current or voltage; each of the volt-ampere detectors includes a detection head, a volt-ampere meter and a wireless communication module, the volt-ampere meter is respectively connected to the detection head and the wireless communication module, and the wireless communication module is used to send the current or voltage data detected by the volt-ampere meter to the smart watch; The smart watch is used to receive the current or voltage data uploaded by the two volt-ampere detectors of the corresponding phasor detection device, and determine the phasor test result according to the measurement result of the secondary voltage equipotential point and the measurement result of the terminal to be tested; each smart watch is also used to send the determined phasor test result to the smart terminal; The smart terminal is used to receive the phasor test results uploaded by each smart watch, and perform phase verification and analysis on each phasor test result.

2. The mobile station domain phasor test device according to claim 1, characterized in that: Each set of phasor detection equipment includes a first volt-ampere detector and a second volt-ampere detector; when measuring voltage, the detection head of the first volt-ampere detector is connected to the secondary voltage equipotential point to collect the reference voltage; the detection head of the second volt-ampere detector contacts the terminal to be measured to collect voltage data.

3. The mobile station domain phasor test device according to claim 2, characterized in that: The phasor detection device also includes a third volt-ampere detector; when measuring current, the detection head of the first volt-ampere detector is connected to the secondary voltage equipotential point for collecting reference current; the A terminal and the B terminal of the current to be tested are connected by a first short-circuit wire, the front end of the second volt-ampere detector detection head and the front end of the third volt-ampere detector detection head are overlapped, and after embracing the first short-circuit wire, the tail end of the second volt-ampere detector detection head and the tail end of the third volt-ampere detector detection head are connected by a second short-circuit wire for collecting current data.

4. The mobile station domain phasor test device according to claim 2, characterized in that: The second volt-ampere detector further includes an auxiliary connecting wire, one end of which is connected to the negative terminal of the volt-ampere meter of the second volt-ampere detector, and the other end is a free end; when measuring the current of the AB terminal, the detection head of the first volt-ampere detector is connected to the secondary voltage equipotential to collect the reference current; The detection head of the second volt-ampere detector is connected to the A terminal, and the free end of the auxiliary connecting line is connected to the B terminal to collect current data.

5. The mobile station domain phasor test device according to claim 4, characterized in that: The volt-ampere detector is provided with a card slot, and the auxiliary connecting line can be inserted into the card slot.

6. The mobile station domain phasor test device according to claim 1, characterized in that: When performing phase checking and analysis across substations, the smart terminal sends timing instructions to the smart watches corresponding to the phasor detection equipment for phasor testing in each substation; each smart watch performs timing according to the received timing instructions, and issues a timing completion prompt after the timing is completed, so that the operating personnel can operate the phasor detection equipment to perform phasor testing when they see the timing completion prompt.

7. The mobile station domain phasor testing device according to claim 1, characterized in that: The smart watch includes a report generation module, which is used to generate a test report according to a preset template format based on the current or voltage data uploaded by the phasor detection device.

8. The mobile station domain phasor testing device according to claim 1, characterized in that: The front end of the detection head of each volt-ampere detector is arranged as a jaw structure.

9. The mobile station domain phasor test device according to claim 1, characterized in that: An insulating anti-fall shell is arranged on the outside of each group of the phasor detection devices.

10. The mobile station domain phasor test device according to claim 1, characterized in that: The smart watch also has a shooting function, which is used to shoot image data in the CT root junction box and upload it to the smart terminal.

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