Distributed three-phase synchronous wireless speed measuring device for SF6 circuit breaker

Abstract

The invention discloses a distributed three-phase synchronous wireless speed measuring device for an SF6 circuit breaker, which relates to the field of circuit breakers and comprises a test host and three wireless synchronous speed measuring devices, the test host can receive data from the three wireless synchronous speed measuring devices which are wirelessly synchronous and process the data in real time; the wireless synchronous speed measuring device comprises a speed sensor, a wireless synchronous module, a data acquisition module, a wireless transmission module, an analog signal sensor and a controller. The speed sensor is used for collecting opening and closing speed data of the circuit breaker; the analog signal sensor is used for collecting analog signals from the circuit breaker; the wireless synchronization module is used for returning a clock synchronization instruction; according to the invention, simultaneous measurement of three-phase opening and closing speeds is realized mainly through the wireless synchronization module, the accuracy of speed measurement of the circuit breaker is improved, correct analysis and evaluation of test data by testers are facilitated, and mechanical faults of the circuit breaker can be found more timely and effectively.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit breakers, and in particular to a distributed three-phase synchronous wireless speed measuring device for SF6 circuit breakers. Background Art

[0002] At present, for three-phase split circuit breakers with voltage levels of 500kV SF6 circuit breakers and above in substations, the phase-to-phase distance of the circuit breakers is relatively large, up to 30 meters. In the actual circuit breaker opening and closing speed test, due to the limitations of the speed sensor test line and the test instrument, there are the following problems: 1. Many existing test instruments only provide a single speed test interface, which means that it is impossible to measure the speed of three-phase circuit breakers at the same time. This limits the efficiency and accuracy of the test, because in actual operation, each phase needs to be measured separately, and then the data is integrated, which is not only time-consuming, but may also affect the consistency of the data due to human operation errors; 2. Due to the large phase-to-phase distance of the circuit breaker, a longer speed test line must be used. Long-distance test lines are susceptible to electromagnetic interference, especially in places with complex electromagnetic environments such as high-voltage substations. This interference may affect the accuracy of the test data and cause deviations in the measurement results; 3. The test data recording, thermal printing or photography of the travel curve, and the preparation of the test report are complicated, and there is a lack of software for envelope analysis of the travel curve. Summary of the invention

[0003] The present invention provides a distributed three-phase synchronous wireless speed measuring device for SF6 circuit breaker, comprising: a test host, three wireless synchronous speed measuring devices;

[0004] The test host is used to set test parameters; the test host can receive data from three wireless synchronous speed measurement devices and process them in real time; the built-in data storage module of the test host can save a large amount of test data and support long-term storage and subsequent analysis of data; the data storage module has a backup function; the test host is provided with a human-computer interaction module equipped with a user interface for human-computer interaction; the user interface can view test results and adjust test parameters in real time;

[0005] The wireless synchronous speed measuring device includes a power module, a speed sensor, a wireless synchronization module, a data acquisition module, a wireless transmission module, an analog signal sensor, and a controller; the power module, the speed sensor, the wireless synchronization module, the data acquisition module, the wireless transmission module, the speed sensor, and the analog signal sensor are respectively connected to the controller; the speed sensor is used to collect the opening and closing speed data of the circuit breaker; the analog signal sensor is used to collect the analog signal from the circuit breaker; the wireless synchronization module is used to return the clock synchronization instruction to ensure the synchronous operation of the wireless synchronous speed measuring device; the wireless transmission module sends the collected data to the test host, and the wireless transmission module adopts the RS485 communication protocol.

[0006] In particular, the test host includes a host power module, a conversion module, a filter processor module, a PLC module, a relay module, a data storage module, a data receiving module, a data processing module, and a human-computer interaction module; the host power module, the conversion module, the filter processor module, the relay module, the data storage module, the data receiving module, the data processing module, and the human-computer interaction module are respectively connected to the PLC module; the PLC module includes a communication module for sending a test instruction to the wireless synchronous speed measurement device;

[0007] Specifically, test the host power module connected to the power plug.

[0008] In particular, the human-computer interaction module adopts a touch screen.

[0009] In particular, the data acquisition module uses a high-precision acquisition module to record data.

[0010] In particular, the filter processor module and the data processing module perform data processing on the collected analog signals.

[0011] In particular, the data processing includes filtering, denoising and correction, which can improve the quality of the signal and reduce the impact of errors on the measurement results.

[0012] In particular, the conversion module converts the analog signal after data processing into a digital signal for transmission and processing.

[0013] Particularly, the data storage module adopts a 2.5-inch SATA hard disk of model 870QVO.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention sets a test host for setting test parameters, and can receive data from three wireless synchronous speed measuring devices, and process it in real time; three wireless synchronous speed measuring devices are set to measure the three-phase opening and closing speed, and the three-phase opening and closing speed is measured simultaneously through the wireless synchronization module, which improves the accuracy of the circuit breaker speed measurement, is conducive to the correct analysis and evaluation of the test data by the test personnel, and can more timely and effectively discover the mechanical fault of the circuit breaker. The present invention also solves the problem of excessive distance between the phases through the wireless module, thereby effectively reducing the work intensity of the test personnel and improving the test safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for describing the embodiments are briefly introduced below.

[0016] Figure 1 This is a structural diagram of a distributed three-phase synchronous wireless speed measuring device for SF6 circuit breaker of the present invention;

[0017] Figure 2 This is an internal structure diagram of a distributed three-phase synchronous wireless speed measuring device for SF6 circuit breaker of the present invention;

[0018] Figure 3 This is an electrical connection schematic diagram of a test host of a distributed three-phase synchronous wireless speed measuring device for SF6 circuit breakers of the present invention;

[0019] Figure 4 The present invention is a schematic diagram of the electrical connection of a wireless synchronous speed measuring device of a distributed three-phase synchronous wireless speed measuring device for an SF6 circuit breaker.

[0020] Reference numerals:

[0021] 1. Test host; 2. Host power module; 3. Conversion module; 4. Filter processor module; 5. PLC module; 6. Relay module; 7. Data storage module; 8. Data receiving module; 9. Data processing module; 10. Power socket; 11. Fan port; 12. Human-computer interaction module; 13. Antenna device; 14. USB interface; 15. Wireless synchronous speed measurement device; 16. Power module; 17. Wireless transmission module; 18. Data acquisition module; 19. Speed ​​sensor. DETAILED DESCRIPTION

[0022] The technical scheme in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. Obviously, the described embodiment is only a part of the embodiment of the present invention, not all of the embodiments. Based on the embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" 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 components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0025] like Figure 1-2 As shown, the present invention provides a distributed three-phase synchronous wireless speed measuring device for SF6 circuit breaker, including: a test host, which is a box with a cover made of aluminum alloy, and a host power module, a conversion module, a filter processor module, a PLC module, a relay module, a data storage module, a data receiving module, and a data processing module are sealed and installed inside the box; a power socket, a fan port, a human-computer interaction module, an antenna device, and a USB interface are arranged on the outside of the box.

[0026] like Figure 3 As shown, the host power module, conversion module, filter processor module, relay module, data storage module, data receiving module, data processing module, and human-computer interaction module are respectively connected to the PLC module.

[0027] The PLC module includes a communication module for sending a test instruction to the wireless synchronous speed measuring device.

[0028] The human-computer interaction module uses a touch screen, through which test parameters can be set, test results can be viewed in real time, test parameters can be adjusted, and envelope analysis can be performed.

[0029] The data storage module can store a large amount of collected data to meet the test needs of testers. The data storage module uses a 2.5-inch SATA hard disk model 870QVO.

[0030] The filter processor module and the data processing module perform data processing on the collected analog signals, and the data processing includes filtering, denoising and correction to ensure the quality of the signal and reduce the influence of errors on the measurement results.

[0031] The conversion module converts the analog signal after data processing into a digital signal for transmission and processing.

[0032] The model of the PLC module used is FX1S-30MT-D. The PLC module includes a Bluetooth module and a wireless RS485 communication module. The test host ensures the stability of wireless transmission by setting up a wireless device.

[0033] The test host sends a clock synchronization instruction to the wireless synchronous speed measurement device, and the wireless synchronous speed measurement device responds to the clock synchronization instruction, indicating that the test host and the wireless synchronous speed measurement device can currently achieve synchronous operation.

[0034] The test host can obtain the standard clock signal through a wireless device.

[0035] It is also equipped with a USB interface, so testers can send the converted test data to a computer or mobile device wirelessly or wiredly for further data analysis and report generation.

[0036] The host power module ensures the power supply of the test host. The host power module uses a rechargeable lithium battery. When the lithium battery is exhausted, it can be recharged through the power socket.

[0037] When the test host is working, each component is generating heat. The inside of the box where the components are located is a sealed area. If the temperature of the area is too high, the working efficiency of the components will be reduced, and even high-temperature damage will occur. A fan port is set in the box to reduce the temperature inside the box by introducing circulating air, thereby ensuring the working efficiency of the components and reducing the probability of component burning.

[0038] It also includes three wireless synchronous speed measuring devices, inside which a power supply module, a speed sensor, a wireless synchronization module, a data acquisition module, a wireless transmission module, an analog signal sensor, and a controller are fixedly installed.

[0039] like Figure 4 As shown, the power module, speed sensor, wireless synchronization module, data acquisition module, wireless transmission module, speed sensor, and analog signal sensor are respectively connected to the controller.

[0040] The power module enables the wireless synchronous speed measuring device to work independently.

[0041] The wireless synchronization module is used to return clock synchronization instructions to ensure the synchronization of the operation of the wireless synchronous speed measurement device.

[0042] The wireless transmission module uses an RS485 communication module, which can send the collected data to the test host.

[0043] The data acquisition module adopts a high-precision acquisition module, which can execute acquisition instructions and perform acquisition tasks in a certain time range as a cycle according to the acquisition instructions.

[0044] After receiving the speed acquisition command from the data acquisition module, the speed sensor acquires the opening and closing speed of the circuit breaker and sends the acquired data to the test host through the wireless transmission module.

[0045] After receiving the speed acquisition command from the data acquisition module, the analog signal sensor acquires the analog signal of the circuit breaker and sends the acquired data to the test host through the wireless transmission module.

[0046] The working principle of this embodiment is as follows:

[0047] The test host sends a test instruction to the three wireless synchronous speed measuring devices through the PLC module. The three wireless synchronous speed measuring devices simultaneously receive the test instruction signal through the wireless transmission module, and turn on the data acquisition module to start the test data acquisition for the A / B / C phases of the circuit breakers installed thereon, and send the collected data to the test host through the wireless transmission module.

[0048] The usage of this embodiment is as follows:

[0049] When the tester starts the test, the wireless synchronous speed measurement device is installed on the A, B, and C phases of the circuit breaker respectively.

[0050] Turn on the test host, and the relay module energizes each component so that each component can work normally. Set the test parameters such as circuit breaker type, test mode, data acquisition frequency, etc. through the human-computer interaction module of the test host.

[0051] The test host sends a clock synchronization instruction to the wireless synchronous speed measuring device, and the wireless synchronization module of the wireless synchronous speed measuring device responds to the synchronization instruction and returns the clock synchronization instruction, indicating that the current test host and the wireless synchronous speed measuring device can achieve synchronous operation.

[0052] When the three wireless synchronous speed measuring devices have all completed the synchronization instruction, the set test parameters are sent to the wireless synchronous speed measuring devices through the PLC module.

[0053] The wireless synchronous speed measuring device receives the test command signal and starts data collection for the A / B / C phase to which it belongs.

[0054] After each collection cycle is completed, the wireless synchronous speed measurement device sends the collected data to the test host.

[0055] The test host simultaneously receives the collected data sent back from three wireless synchronous speed measurement devices. The collected data include the opening and closing speed, the simulated model of the circuit breaker, etc.

[0056] The data processing module will perform preliminary processing on the collected data. Data processing includes filtering, denoising, correction and other steps to improve the accuracy and reliability of the data.

[0057] The conversion module converts the analog signal after data processing into a digital signal for subsequent further data processing.

[0058] Testers can also perform envelope analysis on the processed data through the professional software built into the test host.

[0059] The technical effects of this embodiment are as follows:

[0060] 1. This embodiment uses a wireless module and wireless transmission technology to reduce the complexity of traditional wiring methods and improve the flexibility and stability of data transmission.

[0061] 2. This embodiment overcomes the problems of test asynchrony and inaccurate data caused by long distances through the wireless module, and also improves the safety of testers.

[0062] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A distributed three-phase synchronous wireless speed measuring device for SF6 circuit breaker, comprising: Test host, 3 wireless synchronous speed measurement devices; The test host is used to set test parameters; The test host can receive data from three wireless synchronous speed measuring devices and process them in real time; the built-in data storage module of the test host can save a large amount of test data and support long-term storage and subsequent analysis of data; the data storage module has a backup function; the test host is equipped with a human-computer interaction module equipped with a user interface for human-computer interaction; the user interface can view test results and adjust test parameters in real time; The wireless synchronous speed measuring device includes a power module, a speed sensor, a wireless synchronization module, a data acquisition module, a wireless transmission module, an analog signal sensor, and a controller; the power module, the speed sensor, the wireless synchronization module, the data acquisition module, the wireless transmission module, the speed sensor, and the analog signal sensor are respectively connected to the controller; the speed sensor is used to collect the opening and closing speed data of the circuit breaker; the analog signal sensor is used to collect the analog signal from the circuit breaker; the wireless synchronization module is used to return the clock synchronization instruction to ensure the synchronous operation of the wireless synchronous speed measuring device; the wireless transmission module sends the collected data to the test host, and the wireless transmission module adopts the RS485 communication protocol.

2. According to claim 1, a distributed three-phase synchronous wireless speed measuring device for SF6 circuit breaker, the test host includes a host power module, a conversion module, a filter processor module, a PLC module, a relay module, a data storage module, a data receiving module, a data processing module, and a human-computer interaction module; the host power module, the conversion module, the filter processor module, the relay module, the data storage module, the data receiving module, the data processing module, and the human-computer interaction module are respectively connected to the PLC module; the PLC module includes a communication module for sending test instructions to the wireless synchronous speed measurement device.

3. According to the distributed three-phase synchronous wireless speed measuring device for SF6 circuit breaker of claim 2, the power module of the test host is connected to the power plug.

4. According to the distributed three-phase synchronous wireless speed measuring device for SF6 circuit breaker of claim 2, the human-computer interaction module adopts a touch screen.

5. According to the distributed three-phase synchronous wireless speed measuring device for SF6 circuit breaker of claim 1, the data acquisition module adopts a high-precision acquisition module to record data.

6. According to the distributed three-phase synchronous wireless speed measuring device for SF6 circuit breaker of claim 2, the filter processor module and the data processing module perform data processing on the collected analog signals.

7. According to the distributed three-phase synchronous wireless speed measuring device for SF6 circuit breaker of claim 2, the data processing includes filtering, denoising and correction, which can improve the quality of the signal and reduce the influence of errors on the measurement results.

8. According to the distributed three-phase synchronous wireless speed measuring device for SF6 circuit breaker of claim 2, the conversion module converts the analog signal after data processing into a digital signal for transmission and processing.

9. According to the distributed three-phase synchronous wireless speed measuring device for SF6 circuit breaker in claim 2, the data storage module adopts a 2.5-inch SATA hard disk with model number 870QVO.

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