Three-phase electricity test system

Abstract

The utility model relates to a three-phase electricity test system, and belongs to the technical field of electricity test. A three-phase electricity test system comprises a master station server, a phasing base station, a sensing device and a handset, the phasing base station, the sensing device and the handset are in communication connection with the master station server, and a phase verification unit and a network connection unit are arranged in the handset. The phase verification unit is in communication connection with the phasing base station and / or the master station server through the network connection unit; the phase verification unit comprises a nuclear phase module and a phasing module, and the nuclear phase module and the phasing module are respectively in communication connection with the sensing equipment; the sensing device comprises a special sensor, the special sensor is in communication connection with the nuclear phase module, and the special sensor is used for measuring the power distribution cabinet and is configured to correct the phase difference between the special sensor and the power distribution cabinet in a preset deviation angle mode. The three-phase electricity test system provided by the utility model at least solves the problem that the function of a handset is relatively single in the prior art.

Description

Technical Field

[0001] The present application relates to the technical field of power consumption testing, and in particular to a three-phase power consumption testing system. Background Art

[0002] The three-phase power test system is a system used to measure and analyze three-phase electrical parameters, and is widely used in power systems. As a component carried by operators, the handheld device can be used to implement a variety of different functions in the three-phase power test system, such as collecting electrical parameters (voltage, current, power, power factor, etc.) in three-phase electrical equipment, monitoring electrical equipment to quickly locate equipment fault points, and performing phase detection on three-phase systems.

[0003] However, the functions of the handheld devices in the related art are relatively single, and operators need to switch handheld devices with corresponding functions in different usage scenarios, which is inconvenient to carry and affects the work efficiency of operators. Utility Model Content

[0004] Based on this, it is necessary to provide a three-phase power consumption test system to address the problem that the functions of the handheld device are relatively single.

[0005] An embodiment of the present application provides a three-phase power consumption test system, which includes a main station server and a phase-fixing base station, a sensor device and a handheld device that are communicatively connected to the main station server, wherein a phase verification unit and a network connection unit are provided in the handheld device, and the phase verification unit is communicatively connected to the phase-fixing base station and / or the main station server through the network connection unit; the phase verification unit includes a phase checking module and a phase fixing module, and the phase checking module and the phase fixing module are communicatively connected to the sensor device respectively; the sensor device includes a dedicated sensor, which is communicatively connected to the phase checking module, and the dedicated sensor is used to measure the distribution cabinet, and is configured to correct the phase difference between the dedicated sensor and the distribution cabinet by means of a preset deviation angle.

[0006] In some embodiments, the phase determination module includes a remote phase determination submodule and a local phase determination submodule, and the remote phase determination submodule is communicatively connected to the phasing base station via a network connection unit.

[0007] In some embodiments, there are multiple phasing base stations, and the multiple phasing base stations serve as backup for each other; the remote phase submodule is communicatively connected to the nearest phasing base station.

[0008] In some embodiments, the phase verification unit further includes a clock, which is connected to the phasing module to provide time to the phasing module when the network connection unit fails.

[0009] In some embodiments, the phasing module includes a memory to store the absolute angle measured by the sensing device in the event of a failure of the network connection unit.

[0010] In some embodiments, the phase checking module includes a remote phase checking submodule, and the remote phase checking submodule is connected to a clock to communicate with the sensor device at a fixed time during remote phase checking.

[0011] In some embodiments, the core module further includes a communication submodule, and different handheld devices are matched through the communication submodule to achieve communication functions.

[0012] In some embodiments, the sensing device further includes a high voltage sensor and a low voltage sensor, wherein the high voltage sensor is used to measure a line with a voltage not less than 10 kV, and the low voltage sensor is used to measure a line with a voltage less than 10 kV.

[0013] In some embodiments, there are multiple sensing devices, and the handset is communicatively connected to the multiple sensing devices respectively.

[0014] In some embodiments, the network connection unit includes a mobile communication module and a WIFI communication module.

[0015] The three-phase power test system provided by the embodiment of the present application brings at least the following beneficial effects:

[0016] By setting a phase verification unit in the handheld device, and the phase verification unit includes a phase checking module and a phase fixing module, the phase checking module and the phase fixing module are respectively connected to the sensing device for communication, so that the handheld device can measure the basic parameters of electric energy such as voltage and current of the line on site, and also has the functions of phase checking and phase fixing. At the same time, by building a network connection unit into the handheld device, the phase verification unit can communicate with the phase fixing base station and / or the main station server through the network connection unit, so that the handheld device can adapt to the environment with smooth network connection and the environment without network, so as to realize the functions of phase checking and phase fixing in various environments. At the same time, by setting a special sensor connected to the handheld device for communication, the distribution cabinet is measured by the special sensor, so as to improve the accuracy of phase checking of the distribution cabinet.

[0017] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application 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 some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1A schematic diagram of a connection framework of components in a three-phase power test system provided in an embodiment of the present application;

[0020] Figure 2 A schematic diagram of a connection framework of some components in a three-phase power test system provided in an embodiment of the present application;

[0021] Figure 3 A schematic diagram of the circuit when the sensor of the related technology performs phase checking on the power distribution cabinet;

[0022] Figure 4 This is a simplified circuit diagram of a three-phase power test system provided in one embodiment of the present application in which a dedicated sensor performs phase checking on a power distribution cabinet.

[0023] Explanation of the accompanying drawings: 100, three-phase power test system; 10, main station server; 20, phasing base station; 30, sensing equipment; 31, high-voltage sensor; 32, low-voltage sensor; 33, special sensor; 40, handheld device; 41, phase verification unit; 411, phase verification module; 4111, remote phase verification submodule; 4112, local phase verification submodule; 4113, communication submodule; 412, phasing module; 4121, memory; 413, clock; 42, network connection unit; 421, mobile communication module; 422, WIFI communication module. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0025] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0026] In addition, if the term "and / or" appears, "and / or" is merely a description of the association relationship of associated objects, indicating that three relationships may exist, for example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the objects associated before and after are in an "or" relationship. If the terms "first" and "second" appear, these terms are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "multiple" appears, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0027] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0028] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0029] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0030] The three-phase power test system is a system used to measure and analyze three-phase electrical parameters, and is widely used in power systems. As a component carried by operators, the handheld device can be used to implement a variety of different functions in the three-phase power test system, such as collecting electrical parameters (voltage, current, power, power factor, etc.) in three-phase electrical equipment, monitoring electrical equipment to quickly locate equipment fault points, and performing phase detection on three-phase systems.

[0031] However, the functions of handheld devices in related technologies are usually relatively simple. Most of them can only measure basic parameters of electric energy, such as voltage and current measurement functions, but do not have the phase checking function. Products with the phase checking function do not have the network phase setting function, and some products with the network phase setting function do not have the off-grid phase setting function. Furthermore, some handheld devices with the phase checking function need to be divided into two sets of equipment for high-voltage phase checking and low-voltage phase checking, so that operators need to carry multiple handheld devices when they need to perform different function tests on site, which makes the operation convenience of operators insufficient.

[0032] Please refer to Figure 1 and Figure 2 The embodiment of the present application provides a three-phase power consumption test system 100, which includes a main station server 10 and a phasing base station 20, a sensor device 30 and a handheld device 40 that are communicatively connected to the main station server 10, wherein a phase verification unit 41 and a network connection unit 42 are provided in the handheld device 40, and the phase verification unit 41 is communicatively connected to the phasing base station 20 and / or the main station server 10 through the network connection unit 42; the phase verification unit 41 includes a phase verification module 411 and a phase determination module 412, and the phase verification module 411 and the phase determination module 412 are communicatively connected to the sensor device 30 respectively; the sensor device 30 includes a dedicated sensor 33, which is communicatively connected to the phase verification module 411, and the dedicated sensor 33 is used to measure the distribution cabinet, and is configured to correct the phase difference between the dedicated sensor 33 and the distribution cabinet by presetting the deviation angle.

[0033] The main station server 10 is the core control and data processing unit of the three-phase power consumption test system 100. It can usually be used to receive various types of data (voltage, current, phase, frequency, etc.) uploaded from terminals such as the phasing base station 20, the sensor device 30, and the handheld device 40, and analyze and process the aforementioned received data, and then calculate key indicators such as power quality and line loss, providing a basis for evaluating the operating status of the power grid; at the same time, the main station server 10 can also be used to configure detection tasks and send them to the aforementioned phasing base station 20, sensor device 30, handheld device 40 and other terminal devices, and guide each terminal device to complete the corresponding testing work.

[0034] Based on this, in these embodiments of the present application, a phased base station 20, a sensor device 30 and a handheld device 40 can be set to communicate with the main station server 10, so that each terminal can send various types of collected data to the main station server 10, and the main station server 10 can issue work instructions to each terminal device.

[0035] The phasing base station 20 is a key device for determining the reference phase in the three-phase power test system. In actual operation, the phase data collected on site can be uploaded to the main station server 10, and the instructions of the main station server 10 can be forwarded to terminal devices such as the handheld device 40. Satellite timing technologies such as GPS can also be used to improve the time synchronization between the phasing base station 20 and the handheld device 40, thereby improving the phasing accuracy.

[0036] The sensor device 30 is a measuring device installed on site, which is mainly used to collect various parameters of three-phase electricity. For example, the sensor device 30 can be used to collect the voltage, current, frequency, phase and other electrical parameter data of the line in real time, and convert it into a digital signal, and then send the data to the phase-fixed base station or the main station server through a wired or wireless communication connection.

[0037] The dedicated sensor 33 is used to measure the switch cabinet, ring main cabinet and other power distribution cabinets on site. It is a dedicated sensor for phase measurement of the power distribution cabinet.

[0038] When checking the phase of a power distribution cabinet, it is usually difficult to directly measure the wire part in the cabinet, so it is necessary to check the phase of the live display set on the power distribution cabinet. In other words, the dedicated sensor 33 can detect the live display of the power distribution cabinet to obtain the phase information of the power distribution cabinet.

[0039] Specifically, please refer to Figure 3 , Figure 3 The schematic diagram of the circuit of the sensor of the related technology when performing phase checking on the power distribution cabinet is shown. The current phase of the current flowing through the capacitive sensor is actually measured by the live display. According to Kirchhoff's law, the capacitive sensor will bear most of the voltage drop, so it can be known that the phase difference between the current of the capacitive sensor and the 10kV voltage is extremely close to 90°.

[0040] However, due to the wide and complex production standards of live display cabinets, the specifications of live display cabinets produced by different manufacturers are completely different, especially the capacitance of the capacitive sensors used are very different. Therefore, if ordinary sensors are used to check the live display, different angle deviations will be generated due to the differences in the specifications of the live display, and these angle deviations are unpredictable, so it is difficult to correct them by presetting the deviation angle on the sensor. Therefore, there is always a large angle deviation after checking the live display, and the result is of low credibility.

[0041] In these embodiments of the present application, by setting a special sensor 33, a small resistance measuring circuit is arranged in the special sensor 33. When the charged display is subjected to phase nuclear testing by using the special sensor 33, the small resistance measuring circuit in the special sensor 33 can be connected in parallel to the lighting circuit of the charged display. In this way, after the sensor is connected to the nuclear phase hole, since the small resistance circuit and the lighting circuit are in parallel, it can be known according to Kirchhoff's law that at this time, the current on the capacitive sensor will mostly flow through the small resistance. According to the principle of current vector synthesis, the current phase on the small resistance will be very slightly different from the current phase on the capacitive sensor, so that it can be determined that the current phase on the small resistance will be almost strictly 90° different from the 10kV line. It is also known that the voltage and current of the pure resistive circuit are strictly in phase, so that the measured voltage phase and the 10kV line will be almost strictly 90° different. After correcting the 90° fixed value, the phase angle of the 10kV line in the highly reliable distribution cabinet can be obtained.

[0042] The handheld device 40 is a portable device used for on-site operation and data viewing. The handheld device 40 can be paired with at least one sensing device 30 on site to achieve a communication connection between the handheld device 40 and at least one sensing device 30, so that the operator can operate the sensing device 30 through the handheld device 40 on site to control the sensing device 30 to obtain various data parameters.

[0043] A phase verification unit 41 and a network connection unit 42 are provided in the handheld device 40, and the phase verification unit 41 is communicatively connected to the phasing base station 20 and / or the main station server 10 via the network connection unit 42, which means that part of the structure in the phase verification unit 41 can be communicatively connected to the phasing base station 20 via the network connection unit 42, part of the structure in the phase verification unit 41 can be communicatively connected to the main station server 10 via the network connection unit 42, and part of the structure in the phase verification unit 41 can be communicatively connected to the main station server 10 and the phasing base station 20 via the network connection unit 42.

[0044] In this way, the operator can obtain the phase signal of the line detected by the sensor device 30 through the phase verification unit 41 in the handheld device 40. And cooperate with the network connection unit 42 to realize the remote phase verification, local phase verification, network phase determination and non-network phase determination functions on site. Such an integrated design allows the operator to realize all the above functions through a handheld device, with a higher degree of integration.

[0045] The phase verification unit 41 includes a phase checking module 411 and a phase fixing module 412. The phase checking module 411 and the phase fixing module 412 are respectively connected to the sensor device 30 for communication, so that the phase checking module 411 and the phase fixing module 412 can realize data interaction with the sensor device 30, so that the operator can control the sensor device 30 through the handheld device 40 to collect the phase information of the line, thereby realizing the phase checking or phase fixing function.

[0046] The three-phase power consumption test system 100 provided in the present application is provided with a phase verification unit 41 in the handheld device 40, and the phase verification unit 41 includes a phase checking module 411 and a phase fixing module 412. The phase checking module 411 and the phase fixing module 412 are respectively connected to the sensor device 30 for communication, so that the handheld device 40 can measure the basic parameters of electric energy such as voltage and current of the line on site, and also has the functions of phase checking and phase fixing. At the same time, by building a network connection unit 42 in the handheld device 40, the phase verification unit 41 can communicate with the phase fixing base station 20 and / or the main station server 10 through the network connection unit 42, so that the handheld device 40 can adapt to the environment with smooth network connection and the environment without network, so as to realize the functions of phase checking and phase fixing in various environments.

[0047] In some embodiments, the phase determination module 411 includes a remote phase determination submodule 4111 and a local phase determination submodule 4112 , and the remote phase determination submodule 4111 is communicatively connected to the phasing base station 20 via the network connection unit 42 .

[0048] The remote phase check submodule 4111 is used to simultaneously check the phase of two sections of the same line at a distance, that is, different operators operate two handheld devices 40 respectively, detect different sections of the same line in their respective sites, obtain the absolute angle value between the phase signal of each line and the reference signal, and then judge whether the phase of the line is the same by comparing the absolute angle values ​​of the two.

[0049] The remote phase checking submodule 4111 is connected to the phasing base station 20 through the network connection unit 42 to obtain a phase reference signal.

[0050] It should be noted that when operators use the remote phase checking submodule 4111 to perform remote phase checking, the distance between the handheld devices 40 operated by two operators needs to be greater than 100m to reduce mutual interference of wireless signals.

[0051] The local phase check submodule 4112 can also be connected to the phase determination base station 20 for communication to obtain a phase reference signal. Based on this, the operator can detect different lines twice on site through the local phase check submodule 4112, and compare the detected phase signal with the reference signal, and obtain the absolute angle values ​​of the two lines in the same site twice, and then realize local phase check through the handheld device 40.

[0052] In some embodiments, there are multiple phasing base stations 20 , and the multiple phasing base stations 20 serve as backup for each other; the remote phase submodule 4111 is in communication connection with the nearest phasing base station 20 .

[0053] There are multiple phasing base stations 20 , and the multiple phasing base stations 20 serve as backup for each other, which can increase the reliability of the system and enhance the connection stability between the remote phase submodule 4111 and the phasing base station 20 .

[0054] The remote phase submodule 4111 is connected to the nearest phased base station 20 for communication to obtain a better wireless communication signal. For example, in some embodiments of the present application, the remote phase submodule 4111 can search for nearby phased base stations 20 through the network connection unit 42 and obtain the distance between the phased base station 20 and the handheld device 40, and the remote phase submodule 4111 can select the nearest phased base station 20 for communication connection.

[0055] In some embodiments, the phase verification unit 41 further includes a clock 413 , which is connected to the phasing module 412 to provide time to the phasing module 412 when the network connection unit 42 fails.

[0056] In these embodiments of the present application, the clock 413 is connected to the phasing module 412 so that when the operator performs phase checking in an area with stable GPS signal and network signal coverage, the phase data collected by the phasing base station 20 can be used as a standard to determine the phase sequence of the measured line by comparing the phase measured by the sensor device 30 and the reference signal of the phasing base station 20 in real time.

[0057] When the GPS signal is unstable or lost, since the phase verification unit 41 is provided with a clock 413, the clock 413 can be used for timing to replace GPS, and the phasing module 412 can continue to be used for phasing.

[0058] In some embodiments of the present application, the clock 413 may be set to communicate with the master server 10 at regular intervals to calibrate the time difference between the clock and the master server 10 , thereby further improving the reliability of the three-phase power testing system 100 .

[0059] It should be noted that the phase verification unit 41 can also be set to include an automatic switch connected to the clock 413, so that it will automatically turn off after the clock 413 works for one time synchronization, and then it can no longer be used for the next time synchronization. It is necessary to manually reset the aforementioned automatic switch and adjust the clock 413 data before the clock 413 can be used for the next time synchronization. This can improve the accuracy of network-free phase determination using the phase determination module 412.

[0060] In some embodiments, the phasing module 412 includes a memory 4121 to store the absolute angle measured by the sensing device 30 when the network connection unit 42 fails.

[0061] In these embodiments of the present application, the memory 4121 in the phasing module 412 can be used to assist in completing the off-network phasing operation, thereby enabling the handheld device 40 to have the off-network phasing function. Exemplarily, when performing a phasing operation on a line in a place without a GPS signal or a network signal, such as a basement or an elevator shaft, the handheld device 40 can temporarily store the absolute angle of the line phase measured by the sensor device 30 in the memory 4121, so that when the handheld device 40 is in an environment with a network signal or a GPS signal, the handheld device 40 can apply to the main station server 10 for historical data at the same time according to the data stored in the memory 4121, and then compare the historical data with the data in the memory 4121 to determine the phase sequence of the measured line based on the phase measured by the sensor device 30 and the phase of the phasing base station 20 at the same time.

[0062] In some embodiments, the phase checking module 411 includes a remote phase checking submodule 4111, and the remote phase checking submodule 4111 is connected to the clock 413 to communicate with the sensor device 30 at a fixed time during remote phase checking.

[0063] The remote phase check submodule 4111 is connected to the clock 413 so as to communicate with the sensor device 30 at a regular time during remote phase check, so as to control the phase check module 411 to control the sensor device 30 to work at a regular time during remote phase check, so as to obtain multiple sets of measurement data; further, when performing phase check, multiple sets of corresponding phase data can be collected for the same line in different sections in different venues, thereby realizing multiple sets of comparison, and further improving the accuracy of remote phase check.

[0064] Exemplarily, in some embodiments, the phase of the first section of the line can be measured at a site. In the site, the remote phase submodule 4111 controls the sensor equipment 30 in the site to obtain the phase data of the line at intervals with the assistance of the clock 413, so as to obtain the phase data of the first section of the line at times t1, t2, and t3 respectively; correspondingly, in another site, another operator can use the same method to obtain the phase data of the second section of the line in the site at times t1, t2, and t3, and then when comparing, the phase data of the first section and the second section of the line at times t1, t2, and t3 are compared respectively, and the error size is judged to determine whether the phase data of the two are the same.

[0065] In some embodiments, the phase identification module 411 further includes a communication submodule 4113 , and different handheld devices 40 are matched through the communication submodule 4113 to achieve a communication function.

[0066] The function of the communication submodule 4113 is real-time communication, so that different operators located in different sites can communicate in real time through, but not limited to, voice, video, etc., thereby realizing real-time comparison of the same line in different sites, judging whether the phases of the two are the same, and having higher reliability.

[0067] Exemplarily, the communication submodule 4113 may be, but is not limited to, a walkie-talkie or a mobile phone.

[0068] In some embodiments, the sensor device 30 includes a high voltage sensor 31 and a low voltage sensor 32, wherein the high voltage sensor 31 is used to measure a line with a voltage not less than 10 kV, and the low voltage sensor 32 is used to measure a line with a voltage less than 10 kV. The reliability of the three-phase power test system 100 is further improved.

[0069] In some embodiments, there are multiple sensing devices 30, and the handheld device 40 is respectively connected to the multiple sensing devices 30. This allows the operator to control the operation of multiple different sensing devices 30 through the handheld device 40 at the same time to obtain different data of the line, further improving the operator's work efficiency in detecting the line.

[0070] In these embodiments, the network connection unit 42 includes a mobile communication module 421 and a WIFI communication module 422. The mobile communication module 421 can achieve network connection through 3G, 4G, and 5G signals of different operators.

[0071] In areas without network coverage, the network connection unit 42 can also communicate with other electronic devices that can connect to the network through the WIFI communication module 422 to obtain network connection. For example, in some embodiments, the handset 40 has a built-in mobile communication module 421 of operator A, and there is no base station of operator A around some remote areas, which makes the handset 40 itself unable to connect to the network, while the operator's mobile phone has a built-in mobile communication module of operator B, and base stations of operator B are deployed around the area, so that the operator's mobile phone can connect to the network. At this time, the operator can connect to the hotspot of the mobile phone through the WIFI communication module 422 to connect to the network.

[0072] It is known that the electronic device may be, in addition to a mobile phone, also but not limited to, a tablet computer or a notebook computer.

[0073] 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.

[0074] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A three-phase power test system, characterized in that: It includes a main station server and a phasing base station, a sensor device and a handheld device that are communicatively connected to the main station server, wherein the handheld device is provided with a phase verification unit and a network connection unit, and the phase verification unit is communicatively connected to the phasing base station and / or the main station server through the network connection unit; The phase verification unit includes a phase verification module and a phase determination module, and the phase verification module and the phase determination module are respectively connected to the sensing device for communication; The sensing device includes a dedicated sensor, which is communicatively connected to the phase detection module. The dedicated sensor is used to measure the power distribution cabinet and is configured to correct the phase difference between the dedicated sensor and the power distribution cabinet by presetting a deviation angle.

2. The three-phase power test system according to claim 1, characterized in that: The phase checking module includes a remote phase checking submodule and a local phase checking submodule, and the remote phase checking submodule is communicatively connected with the phasing base station through the network connection unit.

3. The three-phase power test system according to claim 2, characterized in that: There are multiple phasing base stations, and the multiple phasing base stations serve as backup for each other; The remote phase submodule is communicatively connected to the nearest phasing base station.

4. The three-phase power test system according to claim 1, characterized in that: The phase verification unit further includes a clock, which is connected to the phasing module to provide time to the phasing module when the network connection unit fails.

5. The three-phase power test system according to claim 4, characterized in that: The phasing module includes a memory to store the absolute angle measured by the sensing device when the network connection unit fails.

6. The three-phase power test system according to claim 4, characterized in that: The phase checking module includes a remote phase checking submodule, and the remote phase checking submodule is connected to the clock to communicate with the sensor device at a fixed time during remote phase checking.

7. The three-phase power test system according to claim 6, characterized in that: The core module also includes a communication submodule, and different handheld devices are matched through the communication submodule to achieve a communication function.

8. The three-phase power test system according to any one of claims 1 to 7, characterized in that: The sensing device also includes a high-voltage sensor and a low-voltage sensor, wherein the high-voltage sensor is used to measure a line with a voltage not less than 10 kV, and the low-voltage sensor is used to measure a line with a voltage less than 10 kV.

9. The three-phase power test system according to claim 8, characterized in that: There are multiple sensing devices, and the handheld device is communicatively connected with the multiple sensing devices respectively.

10. The three-phase power test system according to any one of claims 1 to 7, characterized in that: The network connection unit includes a mobile communication module and a WIFI communication module.

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