Intelligent line shaking insulation nuclear phase test system and test method thereof

Abstract

The invention relates to the technical field of power system operation and maintenance, in particular to an intelligent line shaking insulation nuclear phase test system and a test method thereof.An insulation resistance test module adopts a self-adaptive algorithm, the influence of environment temperature and humidity on a test result can be eliminated, and the insulation resistance measurement precision is remarkably improved; a dynamic grounding technology: the induced voltage suppression module adjusts a grounding state and a compensation voltage in real time through the dynamic grounding technology and a voltage compensation algorithm to ensure that a test result is not interfered by the induced voltage; a test neutral period and a quick access technology are optimized: the system can quickly complete access and test in a neutral period from grounding disconnection of a to-be-tested line to equipment access test, and damage to equipment caused by secondary rise of induced voltage is avoided; and real-time monitoring and adjustment: in the test neutral period, the system monitors the line induction voltage in real time, and dynamically adjusts the grounding state and the compensation voltage according to the monitoring result to ensure the equipment safety.

Description

Technical Field

[0001] The present invention relates to the technical field of power system detection, and more specifically, to an intelligent line shaking insulation core phase testing system and a testing method thereof. Background Art

[0002] In the power system, the insulation resistance measurement and phase test of the line are important links to ensure the safe operation of power equipment. Traditional insulation resistance test and phase test usually require manual operation, which has the following problems: manual operation takes a long time, cannot meet the rapid detection needs of large-scale power lines, is prone to errors, and affects the accuracy of the test results. Operators need to be in close contact with high-voltage equipment, which poses safety hazards. There are also problems such as induced voltage, test gaps, and manual operation safety hazards. In response to the above problems, an intelligent line shaking insulation phase test system and its test method are proposed, which can realize automated, high-precision and high-efficiency testing, and solve the problems of induced voltage, test gaps, and manual operation safety hazards. Summary of the invention

[0003] In view of the deficiencies in the prior art, the purpose of the present invention is to provide an intelligent line insulation core phase testing system and a testing method thereof to solve the technical problems existing in the above-mentioned background technology.

[0004] The above technical purpose of the present invention is achieved through the following technical solutions: an intelligent line shaking insulation phase test system, comprising: a test host for collecting and processing test data of the line and a data archiving host for backing up and storing the test data and test results of the test host; the data archiving host is arranged on the system terminal; the test host is communicatively connected with the data archiving host; the test host is provided with: an insulation resistance test module for measuring the insulation resistance value of the line; a phase test module for detecting the phase consistency of the measurement line; a wireless communication module for data interaction with the data archiving host; a display and operation module for displaying test results and an operation interface; the insulation resistance test module and the phase test module are electrically connected to the display and operation module respectively; the display and operation module is electrically connected to the wireless communication module; the wireless communication module is communicatively connected to the data archiving host.

[0005] Optionally, the insulation resistance testing module includes a voltage testing unit for applying a test voltage to the line insulation end, a current sensor for measuring the leakage current of the line insulation end, and a data processing unit for calculating the insulation resistance value of the line insulation end; the voltage testing unit and the current sensor are electrically connected to the data processing unit respectively; and the data processing unit is electrically connected to the display and operation module.

[0006] Optionally, the core phase test module includes several core phase test units; several of the core phase test units adopt wireless synchronization technology to realize synchronous core phase testing of multiple lines to detect the consistency of several core phases of the lines.

[0007] Optionally, the wireless communication module includes a wireless communication unit; the wireless communication unit is respectively connected to the insulation resistance test module and the phase verification test module for receiving the test results of the insulation resistance test module and the phase verification test module; the wireless communication unit is connected to the data archiving host and the display and operation module for transmitting the test results of the insulation resistance test module and the phase verification test module.

[0008] Optionally, the data archiving host includes: a data receiving unit for receiving and transmitting test data and test results transmitted by the wireless communication module, a data classification unit for receiving and classifying the data transmitted by the data receiving unit, and a data storage unit for classifying and storing the data transmitted by the data receiving unit according to the number of the data classification unit; a receiving end of the data receiving unit is communicatively connected to the wireless communication module, a transmitting end of the data receiving unit is communicatively connected to the receiving end of the data classification unit; and a transmitting end of the data classification unit is communicatively connected to the data storage unit.

[0009] Optionally, it also includes: a remote login viewing unit; the remote login viewing unit is communicatively connected to the data storage unit, and the management personnel can view the test data and test results in any test through the remote login viewing unit.

[0010] Optionally, it also includes: an automatic grounding device for grounding the test host; the automatic grounding device includes a mechanical arm and a grounding wire clamp; one end of the mechanical arm is detachably connected to the grounding wire clamp, and the other end is detachably connected to the test host; the display and operation module can be used to control the grounding operation of the grounding wire clamp.

[0011] Optionally, the test host also includes an induced voltage suppression module for suppressing the induced voltage of the test circuit to ensure test accuracy and safety.

[0012] A line shaking insulation core phase testing method based on the above-mentioned intelligent line shaking insulation core phase testing system comprises:

[0013] Step A: The tester brings the test host to the site and ensures that the test host maintains communication connection with the data archiving host;

[0014] Step B, measuring the insulation resistance value of the line by using the insulation resistance test module on the test host, and correcting the measured data by using an adaptive algorithm to obtain a more accurate insulation resistance value;

[0015] Step C: detecting the phase consistency of the test circuit by using the phase test module on the test host;

[0016] Step D: Display the test data and test results through the display and operation module on the test host, so that the test personnel can view and record them;

[0017] Step E: The test data is transmitted to the data archiving host through the wireless communication module on the test host. The data archiving host performs data analysis and storage for future review.

[0018] In summary, the present invention has the following beneficial effects:

[0019] 1. The insulation resistance test module adopts an adaptive algorithm, which can eliminate the influence of ambient temperature and humidity on the test results and significantly improve the accuracy of insulation resistance measurement; Dynamic grounding technology: The induced voltage suppression module uses dynamic grounding technology and voltage compensation algorithm to adjust the grounding state and compensation voltage in real time to ensure that the test results are not affected by induced voltage.

[0020] 2. Optimize the test idle period and fast access technology: The system can quickly complete the access and testing during the idle period from the grounding disconnection of the line to be tested to the access of the equipment to start the test, so as to avoid the induced voltage from rising again and causing damage to the equipment; real-time monitoring and adjustment: During the test idle period, the system monitors the line induced voltage in real time, and dynamically adjusts the grounding status and compensation voltage according to the monitoring results to ensure equipment safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a logical schematic diagram of the system flow of the present invention;

[0022] Figure 2 It is a schematic flow chart of the method steps of the present invention. DETAILED DESCRIPTION

[0023] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings. Several embodiments of the present invention are shown in the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein.

[0024] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. The terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0025] In the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, the first feature being "above", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature. The terms "vertical", "horizontal", "left", "right", "above", "below" and similar expressions are for illustrative purposes only, and do 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 should not be understood as limiting the present invention.

[0026] The present invention is described in detail below in conjunction with the accompanying drawings and embodiments.

[0027] The present invention provides an intelligent line shaking insulation core phase test system, such as Figure 1 As shown, it includes: a test host for collecting and processing test data of the line and a data archiving host for backing up and storing the test data and test results of the test host; the data archiving host is arranged on the system terminal; the test host is communicatively connected with the data archiving host; the test host is provided with: an insulation resistance test module for measuring the insulation resistance value of the line; a phase check test module for detecting the phase consistency of the measurement line; a wireless communication module for data interaction with the data archiving host; a display and operation module for displaying the test results and the operation interface; the insulation resistance test module and the phase check test module are electrically connected to the display and operation module respectively; the display and operation module is electrically connected to the wireless communication module; the wireless communication module is communicatively connected to the data archiving host.

[0028] During the specific implementation process, the inspectors carry and use the test host to perform insulation resistance tests and phase consistency tests on the lines, and display the test results on the test host, so that the inspectors can operate and view the test data through the display and operation modules on the test host. At the same time, the test host communicates with the data archiving host on the system terminal, so as to back up the test data and test results to the back end, which is convenient for future review records.

[0029] Furthermore, the insulation resistance testing module includes a voltage testing unit for applying a test voltage to the line insulation end, a current sensor for measuring the leakage current of the line insulation end, and a data processing unit for calculating the insulation resistance value of the line insulation end; the voltage testing unit and the current sensor are electrically connected to the data processing unit respectively; and the data processing unit is electrically connected to the display and operation module.

[0030] In Example 1, when performing an insulation resistance test on a line, a test voltage is applied to the insulation end of the line through a voltage testing unit, and at the same time, a leakage current at the insulation end of the line is collected. The current sensor reads the data, and the insulation resistance value is calculated according to Ohm's law, thereby obtaining the insulation resistance value of the insulation end of the line.

[0031] Furthermore, the phase-check test module includes a plurality of phase-check test units; the plurality of phase-check test units adopt wireless synchronization technology to realize synchronous phase-check test of multiple lines to detect the consistency of a plurality of phase-checks of the lines.

[0032] In the second embodiment, the phase test unit realizes synchronous phase test of multiple lines through wireless synchronization technology, and adopts a time synchronization algorithm to ensure the consistency of the phase detection time of each test point; the test data is extracted through Fourier transform of the phase information of the line voltage signal, and the phase difference between the two points of the line is calculated. When the phase difference is less than the preset threshold, the line phase is determined to be consistent.

[0033] Furthermore, the wireless communication module includes a wireless communication unit; the wireless communication unit is respectively connected to the insulation resistance test module and the phase verification test module for receiving the test results of the insulation resistance test module and the phase verification test module; the wireless communication unit is connected to the data archiving host and the display and operation module for transmitting the test results of the insulation resistance test module and the phase verification test module.

[0034] In embodiment three, the wireless communication unit includes a high-performance Wi-Fi chip (such as ESP32 or ESP8266), supports 2.4GHz and 5GHz dual-band communications, supports IEEE802.11a / b / g / n / ac protocols, and has a maximum transmission rate of up to 150Mbps; the wireless communication unit receives the test results of the insulation resistance test module and the nuclear phase test module, and transmits them to the data archiving host and the display and operation module.

[0035] Furthermore, the display and operation module includes: a display unit for displaying measurement data and measurement results and an operation unit for controlling the overall opening and closing of the system; the display unit is communicatively connected to the wireless communication module; and the operation unit is electrically connected to the insulation resistance test module and the nuclear phase detection module.

[0036] In embodiment 4, the display unit adopts a high-resolution IPS LCD touch screen, supports multi-touch and gesture operations, and provides a smooth user experience; the operation unit provides multiple physical button interfaces for quick operation of commonly used functions, supports button customization functions, and meets the needs of different users, so that the inspector can start and end the test through the operation unit, and then view the test data and test results through the display unit.

[0037] Furthermore, the data archiving host includes: a data receiving unit for receiving and transmitting test data and test results transmitted by the wireless communication module, a data classification unit for receiving and classifying the data transmitted by the data receiving unit, and a data storage unit for classifying and storing the data transmitted by the data receiving unit according to the number of the data classification unit; the receiving end of the data receiving unit is communicatively connected to the wireless communication module, the transmitting end of the data receiving unit is communicatively connected to the receiving end of the data classification unit; the transmitting end of the data classification unit is communicatively connected to the data storage unit.

[0038] In embodiment five, the data in the data receiving unit is classified and numbered by the data classification unit. The classification may be based on test time, project number, test line name, etc., thereby achieving more intelligent storage; the data storage unit classifies and stores the transmitted data according to the number, so that supervisors can view the data through different numbers.

[0039] Furthermore, it also includes: a remote login viewing unit; the remote login viewing unit is communicatively connected to the data storage unit, and the management personnel can view the test data and test results in any test through the remote login viewing unit.

[0040] Furthermore, it also includes: an automatic grounding device for grounding the test host; the automatic grounding device includes a mechanical arm and a grounding wire clamp; one end of the mechanical arm is detachably connected to the grounding wire clamp, and the other end is detachably connected to the test host; the display and operation module can be used to control the grounding operation of the grounding wire clamp.

[0041] In Example 6, in order to ensure safety during the actual test process, the automatic grounding device uses a multi-degree-of-freedom robotic arm to accurately locate and operate the grounding clamp in order to ground the test host. The control formula of the robotic arm is: θ is the rotation angle of the robot arm, x and y are the target position coordinates of the grounding clamp. The intelligent control system can automatically complete the disassembly and assembly of the grounding clamp according to the test requirements.

[0042] Furthermore, the test host also includes an induced voltage suppression module for suppressing the induced voltage of the test circuit to ensure test accuracy and safety.

[0043] In the seventh embodiment, during the insulation resistance value test of the line, the induced voltage suppression module adjusts the grounding state in real time through the dynamic grounding technology to ensure that the line induced voltage is always within a safe range; wherein the induced compensation grounding voltage formula is V ground =V induced -V, where V ground Expressed as dynamic ground voltage, V induced It is represented as the line induced voltage, and V is represented as the voltage compensation value.

[0044] In other embodiments, during the test process, the test idle period is optimized by using a fast access technology, and the device access time calculation formula is t access =t disconnect +Δt, where t access Represented as the device access time, t disconnect It is expressed as the ground disconnection time of the line, and Δt is the response time of the test module, so as to better ensure the accuracy of the test results without destroying the normal operation of the original line.

[0045] A line shaking insulation core phase testing method based on the above-mentioned intelligent line shaking insulation core phase testing system comprises:

[0046] Step A: The tester brings the test host to the site and ensures that the test host maintains communication connection with the data archiving host;

[0047] Step B, measuring the insulation resistance value of the line by using the insulation resistance test module on the test host, and correcting the measured data by using an adaptive algorithm to obtain a more accurate insulation resistance value;

[0048] Step C: detecting the phase consistency of the test circuit by using the phase test module on the test host;

[0049] Step D: Display the test data and test results through the display and operation module on the test host, so that the test personnel can view and record them;

[0050] Step E: The test data is transmitted to the data archiving host through the wireless communication module on the test host. The data archiving host performs data analysis and storage for future review.

[0051] Optionally, the resistance value correction formula of the adaptive algorithm in step B is R corrected =R ins @(1+α·(TT 0 )+β·(HH 0 )), R ins is the insulation resistance value measured for the first time, R corrected is the insulation resistance value after correction, T is the measured ambient temperature, H is the measured ambient humidity, T 0 is the standard temperature value, H 0 is the standard humidity value, α is the temperature influence coefficient, β is the humidity influence coefficient. The temperature influence coefficient and humidity influence coefficient can be automatically divided by the system or set manually to adapt to different working environments.

[0052] Optionally, in step E, the system uses a machine learning algorithm to analyze historical data, predict the insulation status and phase change trend of the line, provide a scientific basis for power system operation and maintenance, and generate data analysis reports to help users understand the changing patterns of environmental parameters and provide early warning suggestions.

[0053] The present invention discloses an intelligent line shaking insulation core phase test system and a test method thereof. The insulation resistance test module adopts an adaptive algorithm, which can eliminate the influence of ambient temperature and humidity on the test result and significantly improve the accuracy of insulation resistance measurement; dynamic grounding technology: the induced voltage suppression module adjusts the grounding state and compensation voltage in real time through dynamic grounding technology and voltage compensation algorithm to ensure that the test result is not interfered by the induced voltage; optimizes the test idle period and adopts fast access technology: the system can quickly complete access and testing in the idle period from when the ground of the line to be tested is disconnected to when the equipment is connected to start the test, so as to avoid the induced voltage from rising again and causing damage to the equipment; real-time monitoring and adjustment: during the test idle period, the system monitors the line induced voltage in real time, and dynamically adjusts the grounding state and compensation voltage according to the monitoring result to ensure the safety of the equipment.

[0054] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. An intelligent line shaking insulation core phase test system, characterized in that: include: A test host for collecting and processing test data of the line and a data archiving host for backing up and storing the test data and test results of the test host; the data archiving host is arranged on the system terminal; the test host is communicatively connected with the data archiving host; The test host is provided with: an insulation resistance test module for measuring the insulation resistance value of the circuit; Phase test module, used to detect the phase consistency of the measurement line; A wireless communication module, used for data interaction with the data archiving host; Display and operation module, used to display test results and operation interface; The insulation resistance test module and the phase core test module are electrically connected to the display and operation module respectively; the display and operation module is electrically connected to the wireless communication module; and the wireless communication module is communicatively connected to the data archiving host.

2. According to claim 1, an intelligent line insulation core phase test system is characterized in that: The insulation resistance testing module includes a voltage testing unit for applying a test voltage to the line insulation end, a current sensor for measuring the leakage current of the line insulation end, and a data processing unit for calculating the insulation resistance value of the line insulation end; the voltage testing unit and the current sensor are electrically connected to the data processing unit respectively; and the data processing unit is electrically connected to the display and operation module.

3. The intelligent line insulation core phase test system according to claim 1 is characterized in that: The phase-check test module includes a plurality of phase-check test units; the plurality of phase-check test units adopt wireless synchronization technology to realize synchronous phase-check test of multiple lines to detect the consistency of a plurality of phase-checks of the lines.

4. The intelligent line insulation core phase test system according to claim 1 is characterized in that: The wireless communication module includes a wireless communication unit; the wireless communication unit is respectively connected to the insulation resistance test module and the phase verification test module for receiving the test results of the insulation resistance test module and the phase verification test module; the wireless communication unit is connected to the data archiving host and the display and operation module for transmitting the test results of the insulation resistance test module and the phase verification test module.

5. The intelligent line insulation core phase test system according to claim 1 is characterized in that: The display and operation module includes: a display unit for displaying measurement data and measurement results and an operation unit for controlling the overall opening and closing of the system; The display unit is communicatively connected to the wireless communication module; the operating unit is electrically connected to the insulation resistance test module and the core phase detection module.

6. The intelligent line insulation core phase test system according to claim 1 is characterized in that: The data archiving host comprises: a data receiving unit for receiving and transmitting the test data and test results transmitted by the wireless communication module, a data classification unit for receiving and classifying the data transmitted by the data receiving unit, and a data storage unit for classifying and storing the data transmitted by the data receiving unit according to the number of the data classification unit; The receiving end of the data receiving unit is communicatively connected to the wireless communication module, the transmitting end of the data receiving unit is communicatively connected to the receiving end of the data classification unit; and the transmitting end of the data classification unit is communicatively connected to the data storage unit.

7. The intelligent line insulation core phase test system according to claim 6 is characterized in that: Also includes: Remote login viewing unit; the remote login viewing unit is in communication connection with the data storage unit, and the management personnel can view the test data and test results in any test through the remote login viewing unit.

8. The intelligent line insulation core phase test system according to claim 1 is characterized in that: Also includes: An automatic grounding device for grounding the test host; the automatic grounding device comprises a mechanical arm and a grounding wire clamp; One end of the mechanical arm is detachably connected to the grounding clamp, and the other end is detachably connected to the test host; the display and operation module can be used to control the grounding operation of the grounding clamp.

9. The intelligent line insulation core phase test system according to claim 1 is characterized in that: The test host also includes an induced voltage suppression module for suppressing the induced voltage of the test circuit to ensure test accuracy and safety.

10. A line shake insulation core phase test method based on an intelligent line shake insulation core phase test system according to any one of claims 1 to 9, characterized in that: include, Step A: The tester brings the test host to the site and ensures that the test host maintains communication connection with the data archiving host; Step B, measuring the insulation resistance value of the line by using the insulation resistance test module on the test host, and correcting the measured data by using an adaptive algorithm to obtain a more accurate insulation resistance value; Step C: detecting the phase consistency of the test circuit by using the phase test module on the test host; Step D: Display the test data and test results through the display and operation module on the test host, so that the test personnel can view and record them; Step E: The test data is transmitted to the data archiving host through the wireless communication module on the test host. The data archiving host performs data analysis and storage for future review.

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