Intelligent test system for high-voltage transmission line

Abstract

The utility model provides an intelligent test system for a high-voltage transmission line. A test computer is arranged in a control room; the output end of the high voltage generator is connected with a power supply main loop which is grounded through a grounding main switch. The input end of the isolation main switch is connected with the power supply main loop, and the output end of the isolation main switch is connected with the current rising loop; the current-rising loop is grounded through a current-rising grounding switch; the current rising loop is connected with a current rising power transmission line terminal; and the test computer obtains the thermal imaging state of the up-flow power transmission line terminal based on the thermal imaging camera during the up-flow thermal cycle test, and displays the thermal imaging state. According to the utility model, test process control is realized by controlling the isolating switch and the grounding switch, test requirements are met by using the reliability and stability of the isolating switch, and thermal imaging image data are formed by the thermal imaging camera to meet observation requirements of the test process.

Description

Technical Field

[0001] The utility model belongs to the technical field of high - voltage transmission line tests, and particularly relates to an intelligent test system for high - voltage transmission lines. Background Technique

[0002] In order to improve the reliability and safety of the power grid. At present, an intelligent test system for high - voltage transmission lines is used to test and verify some key components and equipment of the power grid.

[0003] The current intelligent test system for high - voltage transmission lines involves sensors, data transmission devices, data acquisition devices, etc. Sensors are the basis of the intelligent fault diagnosis system. Different types of sensors are used to monitor various parameters of the transmission line, such as current, voltage, temperature, vibration, etc.

[0004] The data acquisition device is responsible for processing the data collected by the sensors and integrating it. These devices are usually located on the transmission line and transmit the data to the background data center. The data acquisition device requires high - efficient data - processing capabilities.

[0005] In the prior art, when using the intelligent test system for high - voltage transmission lines, the sensors, data transmission devices, and data acquisition devices are relatively independent, unable to integrate and complement the collected data, and unable to form a whole to achieve the test process. Moreover, when conducting intelligent tests on high - voltage transmission lines, a transmission circuit matching a high - voltage and large - current generator is required for line operation tests, and different test methods need to be satisfied to meet the requirements of intelligent tests for high - voltage transmission lines.

[0006] How to design an effective integration of the control device and the induction device and be able to conduct effective control to achieve various intelligent test processes for high - voltage transmission lines is a technical problem that needs to be solved urgently at present. Content of the Utility Model

[0007] In order to overcome the deficiencies in the above - mentioned prior art, the utility model provides an intelligent test system for high - voltage transmission lines, which can conduct various tests on the transmission line and meet the test requirements.

[0008] The system includes: a control room and a test area; a test computer is arranged inside the control room; a high - voltage generator, a current booster, a current - boosting circuit, an isolation main switch, a grounding main switch, a current - boosting disconnecting switch, a current - boosting grounding switch, and a thermal imaging camera are arranged inside the test area;

[0009] The output end of the high - voltage generator is connected to a power supply main circuit, and the power supply main circuit is grounded through the grounding main switch;

[0010] The input terminal of the isolation main switch is connected to the power supply main circuit, and the output terminal of the isolation main switch is connected to the current boosting circuit; the current boosting circuit is grounded through the current boosting grounding switch; a current boosting transmission line terminal is connected to the current boosting circuit.

[0011] The current booster and the current boosting disconnector are arranged between the output terminal of the isolation main switch of the current boosting circuit and the current boosting transmission line terminal.

[0012] The test computer is respectively communicatively connected to the thermal imaging camera, the high-voltage generator, the current booster, the isolation main switch, the grounding main switch, the current boosting disconnector, and the current boosting grounding switch. The test computer acquires the thermal imaging state of the current boosting transmission line terminal during the current boosting thermal cycle test based on the thermal imaging camera and displays it.

[0013] Furthermore, it should be noted that a cable withstand voltage test circuit, a withstand voltage test disconnector, and a withstand voltage test grounding switch are also arranged inside the test area.

[0014] The cable withstand voltage test circuit is grounded through the withstand voltage test grounding switch; the output terminal of the isolation main switch is also connected to the cable withstand voltage test circuit.

[0015] The withstand voltage test disconnector is arranged between the output terminal of the isolation main switch and the withstand voltage test transmission line terminal.

[0016] The test computer is respectively communicatively connected to the withstand voltage test disconnector and the withstand voltage test grounding switch.

[0017] Furthermore, it should be noted that an overhead line test circuit, an overhead line test disconnector, and an overhead line test grounding switch are also arranged inside the test area.

[0018] The overhead line test circuit is grounded through the overhead line test grounding switch; the output terminal of the isolation main switch is also connected to the overhead line test circuit.

[0019] The overhead line test disconnector is arranged between the output terminal of the isolation main switch and the overhead line.

[0020] The test computer is respectively communicatively connected to the overhead line test disconnector and the overhead line test grounding switch.

[0021] Furthermore, it should be noted that a current boosting current sensor, a current boosting voltage sensor, and a current boosting temperature sensor are arranged on the current boosting transmission line terminal.

[0022] The test computer is respectively communicatively connected to the current boosting current sensor, the current boosting voltage sensor, and the current boosting temperature sensor to acquire the current, voltage, and temperature information of the current boosting transmission line terminal during the current boosting thermal cycle test.

[0023] Further, it should be noted that a withstand voltage current sensor, a withstand voltage voltage sensor, and a withstand voltage temperature sensor are provided at the terminal of the withstand voltage test transmission line;

[0024] The test computer is respectively communicatively connected to the withstand voltage current sensor, the withstand voltage voltage sensor, and the withstand voltage temperature sensor to obtain the current, voltage, and temperature information of the withstand voltage test transmission line terminal during the withstand voltage test process.

[0025] Further, it should be noted that an overhead line current sensor, an overhead line voltage sensor, and an overhead line temperature sensor are provided on the overhead line;

[0026] The test computer is respectively communicatively connected to the overhead line current sensor, the overhead line voltage sensor, and the overhead line temperature sensor to obtain the current, voltage, and temperature information of the overhead line during the overhead line test process.

[0027] Further, it should be noted that a human body detection sensor is also provided inside the test area;

[0028] The test computer detects the personnel information inside the test area by being communicatively connected to the human body detection sensor.

[0029] From the above technical solutions, it can be seen that the present utility model has the following advantages:

[0030] The intelligent test system for high-voltage transmission lines involved in the present utility model can automatically execute the test process according to the control instruction, control the opening and closing of the disconnector and the earthing switch, and there is no need to change the line connection. The present utility model can use the combination and switching of multiple disconnectors to transform into a variety of test circuits. According to the requirements of the test items, the circuit can be flexibly adjusted. The present utility model uses the disconnector and the earthing switch to control the test process, making the test process highly reliable. The test method can also be changed through the test computer to meet the test requirements. According to the test requirements, the parameter data of the test object can be integrated, the thermal imaging image data collected by the thermal imaging camera, and the test personnel can judge the state of the test object according to the thermal imaging image data, and the state data of the test object can be obtained by measuring the parameters through the sensor, and accurate test data collection of the test object can be performed to obtain comprehensive status monitoring data, and the test data can be stored for convenient subsequent viewing. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the present utility model, the drawings required to be used in the description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0032] Figure 1Schematic diagram of an intelligent test system for high-voltage transmission lines;

[0033] Figure 2 Schematic diagram of an embodiment of an intelligent test system for high-voltage transmission lines;

[0034] Figure 3 Example diagram of a thermal imaging camera collecting thermal imaging images and temperature data of test field equipment. Detailed implementation manners

[0035] To make the objectives, features, and advantages of the present utility model more obvious and understandable, the technical solutions in the present utility model will be clearly and completely described below with reference to the accompanying drawings in the specific embodiments of the present utility model. Obviously, the embodiments described below are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in this patent, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of this patent.

[0036] As Figure 1 shown, the intelligent test system for high-voltage transmission lines provided by the present utility model includes: a control room and a test area. The control room is for test personnel to operate and observe the test process. The control room and the test area can be isolated from each other through a protective transparent glass.

[0037] Specifically, a test computer is provided inside the control room; the test computer can be various forms of digital computers, such as, laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. It can also represent various forms of mobile devices, such as, personal digital processors, smart phones, and other similar computing devices. The components shown herein, their connections and relationships, and their functions are only examples and are not intended to limit the implementation of the embodiments described and / or claimed in this application.

[0038] The test computer may further include a wireless communication unit, a user input unit, an output unit, a memory, an interface unit, a controller, and a power supply unit, etc.

[0039] The user input unit can adopt input devices such as touch screens, keyboards, mice, trackpads, touchpads, and joysticks. The output unit can include display devices, auxiliary lighting devices, etc.

[0040] Inside the test area, a high-voltage generator, a current booster, a current-boosting circuit, an isolation main switch, a grounding main switch, a current-boosting disconnecting switch, a current-boosting grounding switch, and a thermal imaging camera are provided.

[0041] The test computer is respectively communicatively connected to a thermal imaging camera, a high-voltage generator, a current booster, a main isolating switch, a main earthing switch, a current-boosting isolating switch, and a current-boosting earthing switch. Optionally, examples of the communication network between the test computer and the thermal imaging camera, the high-voltage generator, the current booster, the main isolating switch, the main earthing switch, the current-boosting isolating switch, and the current-boosting earthing switch include: Local Area Network (LAN), Wide Area Network (WAN), and the Internet.

[0042] According to the test requirements, a PLC control mode can also be set to execute the control of the high-voltage generator, the current booster, the main isolating switch, the main earthing switch, the current-boosting isolating switch, and the current-boosting earthing switch.

[0043] In this embodiment, the output end of the high-voltage generator is connected to a main power supply loop, and the main power supply loop is grounded through the main earthing switch; the input end of the main isolating switch is connected to the main power supply loop, and the output end of the main isolating switch is connected to a current-boosting loop; the current-boosting loop is grounded through the current-boosting earthing switch; a current-boosting transmission line terminal is connected to the current-boosting loop; the current booster and the current-boosting isolating switch are arranged between the output end of the main isolating switch of the current-boosting loop and the current-boosting transmission line terminal. When the test computer obtains the thermal imaging state of the current-boosting transmission line terminal during the current-boosting thermal cycle test based on the thermal imaging camera, it is displayed.

[0044] It should be noted that the high-voltage generator can simulate the voltage and current conditions of an actual transmission line. The high-voltage generator can adjust the output voltage and current according to a control instruction to adapt to different line parameters.

[0045] The current booster is a current source device with a linearly adjustable current-boosting function, which can achieve a variable current output from 0 to 5000 A, and can intelligently match a standard current transformer to supply a variable and stable current to it.

[0046] The test computer automatically matches the output voltage and current of the generator through a programmable controller to adapt to a specific transmission line. Based on the line parameters, test purposes, and safety requirements, the test computer automatically adjusts the output of the generator, and can perform corresponding displays through the collected thermal imaging digital data, realizing the full-range monitoring of the transmission line test.

[0047] All kinds involved in the present utility model can establish or disconnect the connection between different test loops according to the instructions of the test computer, achieving the purpose of performing different test items. At the same time, the high reliability of the isolating switch provides a safe and stable test environment for the test, protecting the safety of personnel and equipment.

[0048] In the present utility model, in order to achieve diversification of test methods, a cable withstand voltage test and an overhead line test can also be set.

[0049] Specifically, as Figure 2 shown, a cable withstand voltage test circuit, a withstand voltage test disconnector, and a withstand voltage test earthing switch are also provided inside the test area; the cable withstand voltage test circuit is grounded through the withstand voltage test earthing switch; the output end of the isolation main switch is also connected to the cable withstand voltage test circuit; the withstand voltage test disconnector is arranged between the output end of the isolation main switch and the terminal of the withstand voltage test transmission line; the test computer is respectively communicatively connected to the withstand voltage test disconnector and the withstand voltage test earthing switch.

[0050] An overhead line test circuit, an overhead line test disconnector, and an overhead line test earthing switch are also provided inside the test area; the overhead line test circuit is grounded through the overhead line test earthing switch; the output end of the isolation main switch is also connected to the overhead line test circuit; the overhead line test disconnector is arranged between the output end of the isolation main switch and the overhead line; the test computer is respectively communicatively connected to the overhead line test disconnector and the overhead line test earthing switch.

[0051] The up-flow transmission line terminal in the present utility model may include, but is not limited to, a transmission cable and electrical components used in cooperation with the transmission cable. The withstand voltage test transmission line terminal may include, but is not limited to, a transmission line and electrical components used in cooperation with the transmission line.

[0052] During the execution of the intelligent test system for high-voltage transmission lines of the present utility model, the system executes corresponding test processes according to the control instructions input by the test personnel.

[0053] When the user sends an up-flow thermal cycle test command, the system self-checks the ready signal. All disconnectors will reset to the open state, and the earthing switch will act to the closed state. After meeting the test environment, a pre-closing warning is sent. A voice alarm can be set inside the test area to issue a voice prompt for the start of the test.

[0054] A human body detection sensor may also be provided inside the test area in the present utility model; the test computer detects the personnel information inside the test area by being communicatively connected to the human body detection sensor. In this way, it can be ensured that after all the personnel inside the test area have exited, detection is carried out through the human body detection sensor to ensure personal safety.

[0055] After a preset time period, which may be a few seconds later, the test computer controls the earthing main switch and the up-flow earthing switch to disconnect. After the test computer receives the signal that the earthing switch has been disconnected in place, it controls the isolation main switch and the up-flow disconnector to close. After closing in place, it controls the high-voltage generator and the up-flow device to operate to execute the up-flow thermal cycle test, perform the up-flow action on the cable. The test computer acquires the thermal imaging state of the up-flow transmission line terminal during the up-flow thermal cycle test based on the thermal imaging camera and displays it.

[0056] Another test method of the present utility model is that the user sends a cable withstand voltage test command, the test computer performs self-check, all disconnectors will reset to the open state, the earthing switch acts to the closed state, and the test area meets the test environment. Here, the test area meeting the test environment can be to ensure that there are no personnel in the test area, and the temperature and humidity in the test area meet the test requirements, etc.

[0057] The test computer issues a closing warning. After 5 seconds, the test computer controls the main earthing switch and the withstand voltage test disconnector to open. After the test computer receives the signal that the earthing switch is in place, it controls the main isolator switch and the withstand voltage test disconnector to close. After the closing is in place, the test computer obtains the thermal imaging state of the terminal of the withstand voltage test transmission line during the cable withstand voltage test based on the thermal imaging camera and displays it.

[0058] The present utility model also relates to the test process of overhead lines. The user sends an overhead line test command to the test computer. The test computer performs self-check. All disconnectors will reset to the open state. The earthing switch acts to the closed state. After meeting the test environment, a pre-closing warning is sent. After 5 seconds, the overhead line test earthing switch and the main earthing switch are opened. After the test computer receives the signal that the earthing switch is in place, the test computer respectively controls the main isolator switch and the overhead line test disconnector to close. After the closing is in place, the test computer obtains the thermal imaging state of the overhead line during the overhead line test based on the thermal imaging camera and displays it.

[0059] In the present utility model, in order to obtain more test process information, an up-current current sensor, an up-current voltage sensor and an up-current temperature sensor are provided at the terminal of the up-current transmission line; the test computer is respectively communicatively connected with the up-current current sensor, the up-current voltage sensor and the up-current temperature sensor to obtain the current, voltage and temperature information of the terminal of the up-current transmission line during the up-current thermal cycle test.

[0060] A withstand voltage current sensor, a withstand voltage voltage sensor and a withstand voltage temperature sensor are provided at the terminal of the withstand voltage test transmission line; the test computer is respectively communicatively connected with the withstand voltage current sensor, the withstand voltage voltage sensor and the withstand voltage temperature sensor to obtain the current, voltage and temperature information of the terminal of the withstand voltage transmission line during the withstand voltage test.

[0061] An overhead line current sensor, an overhead line voltage sensor and an overhead line temperature sensor are provided on the overhead line; the test computer is respectively communicatively connected with the overhead line current sensor, the overhead line voltage sensor and the overhead line temperature sensor to obtain the current, voltage and temperature information of the overhead line during the overhead line test.

[0062] During the implementation of the test of the present utility model, test data can be collected in real time, and the test data includes current, voltage, temperature, etc. The temperature distribution can be detected by fusing thermal imaging, such as Figure 3 as shown. The thermal imaging image data collected by the thermal imaging camera is digitally converted by the image processing system and fused with the data collected by the optical fiber temperature measuring instrument to obtain comprehensive condition monitoring data. At the same time, the data is uploaded to the database identification and verification system to generate three-dimensional test data. The thermal imaging camera and its corresponding thermal imaging program can adopt the commonly used models and software in the field.

[0063] The intelligent test system for high-voltage transmission lines involved in the present utility model can automatically execute the test process according to the control instruction, control the on-off of the disconnecting switch and the earthing switch, and there is no need to change the circuit connection. The present utility model can use the combination and switching of multiple disconnecting switches to transform various test circuits. According to the requirements of the test items, the circuit can be adjusted flexibly. The present utility model uses the disconnecting switch and the earthing switch to control the test process, making the test process highly reliable. The test method can also be changed through the test computer to meet the test requirements. According to the test requirements, the parameter data of the test object can be integrated. The thermal imaging image data collected by the thermal imaging camera is used by the test personnel to judge the state of the test object based on the thermal imaging image data, and the parameters can be measured through sensors to obtain the state data of the test object. Accurate test data of the test object can be collected to obtain comprehensive condition monitoring data, and the test data can be stored for convenient subsequent viewing.

[0064] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present utility model. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A high-voltage transmission line intelligent test system, comprising: Control room and test area; characterized in that a test computer is arranged inside the control room; a high voltage generator, a current booster, a current boosting circuit, a main isolating switch, a main grounding switch, a current boosting isolating switch, a current boosting grounding switch and a thermal imaging camera are arranged inside the test area; The output end of the high voltage generator is connected to a main power supply circuit, and the main power supply circuit is grounded through a main grounding switch; The input end of the isolating main switch is connected to the main power supply circuit, and the output end of the isolating main switch is connected to the boost circuit; the boost circuit is grounded through the boost grounding switch; the boost circuit is connected to the boost transmission line terminal; The current booster and the current boosting isolating switch are arranged between the output end of the isolating master switch of the current boosting circuit and the terminal of the current boosting transmission line; The test computer is respectively communicated with the thermal imaging camera, high voltage generator, current booster, main isolating switch, main grounding switch, current boost isolating switch and current boost grounding switch. The test computer obtains the thermal imaging status of the current boost transmission line terminal during the current boost thermal cycle test based on the thermal imaging camera and displays it.

2. The high-voltage transmission line intelligent test system according to claim 1 is characterized in that: The test area is also equipped with a cable withstand voltage test circuit, a withstand voltage test isolating switch and a withstand voltage test grounding switch; The cable withstand voltage test circuit is grounded through the withstand voltage test grounding switch; the output end of the isolation main switch is also connected to the cable withstand voltage test circuit; The withstand voltage test isolating switch is arranged between the output end of the isolating main switch and the terminal of the withstand voltage test transmission line; The test computer is respectively connected to the withstand voltage test isolating switch and the withstand voltage test grounding switch for communication.

3. The high-voltage transmission line intelligent test system according to claim 1 is characterized in that: The test area is also equipped with an overhead line test loop, an overhead line test disconnector and an overhead line test grounding switch; The overhead line test circuit is grounded through the overhead line test grounding switch; the output end of the isolating main switch is also connected to the overhead line test circuit; The overhead line test disconnector is set between the output end of the main disconnector and the overhead line; The test computer is respectively connected to the overhead line test disconnector and the overhead line test grounding switch for communication.

4. The high-voltage transmission line intelligent test system according to claim 1, characterized in that: A boost current sensor, a boost voltage sensor and a boost temperature sensor are provided on the boost transmission line terminal; The test computer is respectively connected to the boost current sensor, the boost voltage sensor and the boost temperature sensor for communication, so as to obtain the current, voltage and temperature information of the boost transmission line terminal during the boost thermal cycle test.

5. The high-voltage transmission line intelligent test system according to claim 2, characterized in that: The withstand voltage test transmission line terminal is equipped with a withstand voltage current sensor, a withstand voltage sensor and a withstand voltage temperature sensor; The test computer is respectively connected to the withstand voltage current sensor, the withstand voltage sensor and the withstand temperature sensor to obtain the current, voltage and temperature information of the withstand voltage transmission line terminal during the withstand voltage test.

6. The high-voltage transmission line intelligent test system according to claim 3 is characterized in that: An overhead line current sensor, an overhead line voltage sensor and an overhead line temperature sensor are provided on the overhead line; The test computer is respectively connected to the overhead line current sensor, the overhead line voltage sensor and the overhead line temperature sensor for communication, so as to obtain the current, voltage and temperature information of the overhead line during the overhead line test.

7. The high-voltage transmission line intelligent test system according to claim 1, characterized in that: Human body detection sensors are also installed inside the test area; The test computer detects the personnel information inside the test area by communicating with the human detection sensor.

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