C-GIS circuit breaker automatic partial discharge test system and test method thereof

Abstract

The invention relates to a C-GIS circuit breaker automatic partial discharge test system and a test method thereof, the automatic partial discharge test system comprises a test end device and a production line end device, the test end device comprises a shielding room, and a high voltage test device, an automatic commutation device, an automatic wiring device and an automatic opening and closing control device which are arranged in the shielding room; the production line end equipment comprises an automatic roller line, a visual system, a tool positioning module, an aviation plug automatic butt joint tool, a grounding probe butt joint tool and an automatic triggering circuit breaker opening and closing button tool. According to the automatic partial discharge test system, a circuit breaker is automatically conveyed into a shielding room through an automatic roller line, and according to circuit breaker information obtained by scanning a bar code through a visual system, circuit breaker positioning, automatic aviation plug and grounding probe automatic butt joint are achieved through the tool positioning module, the aviation plug automatic butt joint tool and the grounding probe butt joint tool respectively. The whole set of test process can be completed without personnel entering the laboratory, so that the overall test safety is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit breakers, and in particular to a C-GIS circuit breaker automatic partial discharge test system and a test method thereof. Background Art

[0002] The GIS circuit breaker is the core control component in gas-insulated switchgear (Cubicle Gas-Insulated Switchgear), primarily responsible for circuit connection, disconnection, and fault protection. After assembly, the C-GIS circuit breaker evaluates its insulation performance by detecting partial discharge (PD) caused by insulation defects within the device. This helps identify PD issues caused by electric field concentration, insulation aging, or manufacturing defects, and prevents failures caused by long-term discharge accumulation. Existing PD testing systems require manual operations such as circuit breaker docking, aerial plugging, and grounding. This is not only inefficient but also requires test personnel to frequently enter and exit the test room, compromising safety.

[0003] Therefore, the present invention proposes a C-GIS circuit breaker automatic partial discharge test system and a test method thereof to solve the above problems. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a C-GIS circuit breaker automatic partial discharge test system and a test method thereof, which realize automatic docking, automatic aerial plugging and grounding of the circuit breaker without the need for personnel to enter the test room, thereby improving the test safety.

[0005] In order to solve the above technical problems, the technical solution of the present invention is: a C-GIS circuit breaker automatic partial discharge test system, the innovation of which is that it includes test end equipment and production line end equipment; The test end equipment includes a shielded room and high-voltage test equipment, an automatic phase-changing device, an automatic wiring device, and an automatic opening and closing control device arranged in the shielded room; wherein the automatic phase-changing device is used to ensure that the circuit breaker ports A, B, C, a, b, and c are reliably connected to high voltage or reliably grounded, and the circuit breaker housing is reliably grounded or suspended, so as to perform partial discharge testing on the three phases of the circuit breaker; the automatic wiring device is used to automatically connect the circuit breaker test ports; the automatic opening and closing control device is used to control the circuit breaker energy storage, closing, opening, and locking, and provide an in-place signal; The production line end equipment includes an automatic roller line, a vision system, a tooling positioning module, an automatic docking tooling for aerial plugs, a grounding probe docking tooling and an automatic triggering circuit breaker opening and closing button tooling; wherein, the automatic roller line is distributed inside and outside the shielded room for automatic transportation of circuit breakers; the vision system is arranged outside the door of the shielded room for reading circuit breaker information; the tooling positioning module is equipped at the automatic roller line located inside the shielded room for automatic positioning of circuit breakers and high-voltage test equipment; the automatic docking tooling for aerial plugs is used to automatically drive the public aerial plug to dock with the main aerial plug of the tooling tray to take power; the grounding probe docking tooling is used for automatic grounding of the circuit breaker mechanism box and the tooling tray; the automatic triggering circuit breaker opening and closing button tooling is used to automatically trigger the closing and opening buttons according to the requirements of the circuit breaker partial discharge test.

[0006] Furthermore, the automatic wiring device includes an ABC automatic docking device and an abc automatic docking device, the abc automatic docking device is arranged above the automatic roller line, and the ABC automatic docking device is arranged on the side of the automatic roller line.

[0007] Furthermore, the automatic partial discharge test system also includes an insulation test bench and a voltage regulating and filtering device arranged outside the shielded room. The insulation test bench includes a digital partial discharge detection module and a digital power frequency withstand voltage control and measurement module.

[0008] Furthermore, the automatic partial discharge test system also includes an input unit, an electric voltage regulating isolation filter device, an industrial frequency non-corona test transformer, a non-partial discharge protection resistor, a non-partial discharge coupling capacitor and a partial discharge filter adapter.

[0009] The input unit is used to detect the discharge information in the discharge test circuit, that is, the detection impedance; the partial discharge filter adapter is connected to the input unit to filter out the high-frequency interference components doped in the partial discharge signal; the non-partial discharge protection resistor is connected between the power frequency no-corona test transformer and the no-partial discharge coupling capacitor to limit the short-circuit current of the test product during flashover, thereby protecting the test product and the power frequency no-corona test transformer.

[0010] Furthermore, the input unit adopts a double-tuned input circuit of a high-frequency transformer, and both the primary and secondary circuits are LCR circuits, whose primary inductance is tuned with the equivalent capacitance of the test circuit within the amplifier frequency band of the partial discharge instrument.

[0011] Furthermore, the shielded room is equipped with a video monitoring system, a human body sensing detection device and an emergency stop button.

[0012] The test method of the C-GIS circuit breaker automatic partial discharge test system comprises the following steps: S1. Use the roller AGV to connect the tooling tray with the circuit breaker to the outside of the shielded room; S2. After the automatic roller line senses the tooling pallet, it automatically flows the tooling pallet to the door of the shielding room; S3. The visual system at the door of the laboratory automatically scans the barcode of the tooling tray and displays the product information on the insulation test bench, test end equipment and production line end equipment; S4. The shielding room door opens automatically, and the automatic roller line transports the tooling tray into the test room. The tooling positioning module automatically rises to precisely position the tooling tray. S5. The automatic docking tooling of the aerial plug next to the automatic roller line automatically drives the public aerial plug to connect with the main aerial plug of the tooling tray. After power is taken on, two grounding probes are connected to the circuit breaker mechanism box and the tooling tray to complete the grounding. S6. The test end equipment automatically adjusts the automatic wiring device and test parameters to complete the corresponding test based on the circuit breaker configuration, energy storage power supply voltage, closing and opening power supply voltage, and locking power supply voltage retrieved by scanning the tooling tray barcode; S7. After the test is completed, the insulation test bench will automatically determine whether the test results are correct. If the test results are correct, they will be uploaded to the MES system of the circuit breaker production line for archiving. If the test results are incorrect, the equipment will automatically alarm; the automatic docking contacts of the public aviation plug, grounding probe and automatic phase-changing device will retract in turn, the automatic roller line will reverse, and the tooling tray will be moved to the exit position of the shielded room.

[0013] The advantages of the present invention are: The C-GIS circuit breaker automatic partial discharge test system of the present invention automatically transports the circuit breaker into the shielded room via an automatic roller line. Based on the circuit breaker information obtained by scanning the barcode by the visual system, the tooling positioning module, the automatic aerial plug docking tooling, and the grounding probe docking tooling are used to respectively realize circuit breaker positioning, automatic aerial plugging, and automatic grounding probe docking. The entire test process can be completed without personnel entering the test room, thereby improving the overall test safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0015] Figure 1 Schematic diagram of the layout of the shielding room of the present invention.

[0016] Figure 2 Schematic diagram of the layout of the test end equipment of the present invention. DETAILED DESCRIPTION

[0017] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the invention, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0018] Example This embodiment provides a C-GIS circuit breaker automatic partial discharge test system including test end equipment and production line end equipment, such as Figure 1-2 shown.

[0019] The test end equipment includes a shielded room and high-voltage test equipment 1, an automatic phase-changing device 3, an automatic wiring device and an automatic opening and closing control device arranged in the shielded room.

[0020] The shielded room is constructed using panels assembled with conductive linings between them. The doors are electrically operated, airtight shielded sliding doors 9. The room is equipped with a video surveillance system that covers all locations within the room and includes an automatic phase-changing device 3, clearly displaying the interior, the automatic docking status of test specimens, and the high-voltage test equipment 1. The area enclosed by the shielded room serves as the test area, which carries high voltage electricity. To ensure personnel safety, a human presence detection device and an emergency stop button are installed within the test area to prevent personnel from entering. The human presence detection device utilizes a high-voltage laser radar or heat source detection device.

[0021] The automatic phase-changing device 3 is used to ensure that the circuit breaker ports A, B, C, a, b, and c are reliably connected to high voltage or reliably grounded, and the circuit breaker housing is reliably grounded or suspended, so as to perform partial discharge testing on the three phases of the circuit breaker. The automatic wiring device is used to automatically connect the circuit breaker test ports. The automatic wiring device includes an ABC automatic docking device 2-2 and an abc automatic docking device 2-1. The abc automatic docking device 2-1 is located above the automatic roller line, and the ABC automatic docking device 2-2 is located on the side of the automatic roller line. The automatic wiring device meets the requirements of the center distance of 120 to 340 mm. The automatic opening and closing control device is used to control the circuit breaker's energy storage, closing, opening, and locking, so that the circuit breaker is in a state that meets the relevant test requirements and provides an in-position signal.

[0022] The production line equipment includes automatic roller line 4, vision system, tooling positioning module, automatic docking tooling for aerial plugs, grounding probe docking tooling and automatic triggering of circuit breaker opening and closing button tooling.

[0023] Automatic roller lines 4, located inside and outside the shielded room, are used for automatic circuit breaker transport. These lines feature forward and reverse rotation capabilities. When a photoelectric sensor detects a tooling tray, they automatically transport the product into the shielded room and out of the room after testing. A vision system, located outside the shielded room entrance, reads circuit breaker information. A tooling positioning module, located on the automatic roller line inside the shielded room, uses position sensors to automatically position the circuit breaker and high-voltage test equipment 1, improving the accuracy of automatic docking between the circuit breaker and the test equipment. The automatic docking fixture for the aerial plug automatically connects the main aerial plug to the main aerial plug on the tooling tray for power. The grounding probe docking fixture automatically grounds the circuit breaker mechanism box and tooling tray. The grounding probe docking fixture features two automatic grounding probes. After the aerial plug is docked and powered, the probes move out to connect to the circuit breaker mechanism box and tooling tray, completing the grounding operation. The automatic triggering of the circuit breaker open and close buttons is a fixture that automatically triggers the close and open buttons according to the requirements of the circuit breaker partial discharge test.

[0024] In this embodiment, the automatic partial discharge test system also includes an insulation test bench 10 and a voltage-regulating and filtering device 11, located outside the shielded room. The insulation test bench 10 includes a digital partial discharge detection module and a digital power-frequency withstand voltage control and measurement module, respectively used for partial discharge detection and withstand voltage testing. A single computer monitors and controls these two digital modules and is connected to the circuit breaker production line's MES system. The voltage-regulating and filtering device 11 is used to remove random interference that is not synchronized with the power supply.

[0025] The automatic partial discharge test system further comprises an input unit 5, an electric voltage regulating isolation filter device, a power frequency non-corona test transformer 6, a non-partial discharge protection resistor 7, a non-partial discharge coupling capacitor 8 and a partial discharge filter adapter.

[0026] Input unit 5 detects discharge information from the discharge test circuit, i.e., detects impedance. It utilizes a dual-tuned input circuit using a high-frequency transformer. Both the primary and secondary circuits are LCR circuits, with the primary inductance tuned to the equivalent capacitance of the test circuit within the PD instrument's amplifier frequency band. An electrically driven voltage-regulating isolation filter isolates grid interference, stabilizes voltage, and regulates the output signal. It uses natural cooling. A power-frequency no-corona test transformer 6 provides high voltage for withstand voltage testing. A no-partial-discharge protection resistor 7, connected between the power-frequency no-corona test transformer and the no-partial-discharge coupling capacitor, limits short-circuit current during flashovers, protecting both the test specimen and the power-frequency no-corona test transformer. The no-partial-discharge protection resistor 7 consists of an insulating cylindrical frame wrapped with metal wire, with grading rings installed at both ends. The no-partial-discharge coupling capacitor 8 facilitates high-frequency signal transmission while isolating high-voltage and low-voltage systems. It is oil-immersed and mobile, consisting of a grading cover, a capacitor body, and a base. It uses oil-immersed natural cooling. The PD filter adapter is connected to the input unit to filter out high-frequency interference components mixed in the PD signal, which can effectively improve the test effect of the field test and the signal-to-noise ratio of the PD.

[0027] In this embodiment, the automatic phase-changing device, the automatic wiring device, the tooling positioning module, the automatic docking tooling for aerial plugs, and the grounding probe docking tooling are all installed on an aluminum profile frame in the shielded room, and each is driven by a cylinder / motor, positioned by a sensor, and guided by a screw / nut or guide rail / slider, thereby realizing the corresponding docking action.

[0028] The test method of the C-GIS circuit breaker automatic partial discharge test system includes the following steps: S1. Use the roller AGV to connect the tooling tray with the circuit breaker to the outside of the shielded room; S2. After the automatic roller line senses the tooling pallet, it automatically flows the tooling pallet to the door of the shielding room; S3. The visual system at the door of the laboratory automatically scans the barcode of the tooling tray and displays the product information on the insulation test bench, test end equipment and production line end equipment; S4. The shielding room door opens automatically, and the automatic roller line transports the tooling tray into the test room. The tooling positioning module automatically rises to precisely position the tooling tray. S5. The automatic docking tooling of the aerial plug next to the automatic roller line automatically drives the public aerial plug to connect with the main aerial plug of the tooling tray. After power is taken on, two grounding probes are connected to the circuit breaker mechanism box and the tooling tray to complete the grounding. S6. The test end equipment automatically adjusts the automatic wiring device and test parameters to complete the corresponding test based on the circuit breaker configuration, energy storage power supply voltage, closing and opening power supply voltage, and locking power supply voltage retrieved by scanning the tooling tray barcode; S7. After the test is completed, the insulation test bench automatically determines whether the test result is correct. If the test result is correct, it is uploaded to the MES system of the circuit breaker production line for archiving. If the test result is incorrect, the equipment will automatically alarm; the automatic docking contacts of the public aviation plug, grounding probe and automatic phase change device 3 are retracted in turn, the automatic roller line rotates in the opposite direction, and the tooling tray is moved to the exit position of the shielded room.

[0029] The C-GIS circuit breaker automatic partial discharge test system automatically transports the circuit breaker into the shielded room via an automatic roller line. Based on the circuit breaker information obtained by scanning the barcode with the visual system, the system uses the tooling positioning module, the automatic aerial plug docking tooling, and the grounding probe docking tooling to respectively achieve circuit breaker positioning, automatic aerial plugging, and automatic grounding probe docking. The entire test process can be completed without personnel entering the test room, improving overall test safety.

[0030] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above in terms of a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can, without departing from the scope of the technical solution of the present invention, make some changes or modifications to equivalent embodiments using the technical contents disclosed above. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A C-GIS circuit breaker automatic partial discharge test system, characterized by: Including test end equipment and production line end equipment; The test end equipment includes a shielded room and high-voltage test equipment, an automatic phase-changing device, an automatic wiring device, and an automatic opening and closing control device arranged in the shielded room; wherein the automatic phase-changing device is used to ensure that the circuit breaker ports A, B, C, a, b, and c are reliably connected to high voltage or reliably grounded, and the circuit breaker housing is reliably grounded or suspended, so as to perform partial discharge testing on the three phases of the circuit breaker; the automatic wiring device is used to automatically connect the circuit breaker test ports; the automatic opening and closing control device is used to control the circuit breaker energy storage, closing, opening, and locking, and provide an in-place signal; The production line end equipment includes an automatic roller line, a vision system, a tooling positioning module, an automatic docking tooling for aerial plugs, a grounding probe docking tooling and an automatic triggering circuit breaker opening and closing button tooling; wherein, the automatic roller line is distributed inside and outside the shielded room for automatic transportation of circuit breakers; the vision system is arranged outside the door of the shielded room for reading circuit breaker information; the tooling positioning module is equipped at the automatic roller line located inside the shielded room for automatic positioning of circuit breakers and high-voltage test equipment; the automatic docking tooling for aerial plugs is used to automatically drive the public aerial plug to dock with the main aerial plug of the tooling tray to take power; the grounding probe docking tooling is used for automatic grounding of the circuit breaker mechanism box and the tooling tray; the automatic triggering circuit breaker opening and closing button tooling is used to automatically trigger the closing and opening buttons according to the requirements of the circuit breaker partial discharge test.

2. The C-GIS circuit breaker automatic partial discharge test system according to claim 1 is characterized in that: The automatic wiring device includes an ABC automatic docking device and an abc automatic docking device. The abc automatic docking device is arranged above the automatic roller line, and the ABC automatic docking device is arranged on the side of the automatic roller line.

3. The C-GIS circuit breaker automatic partial discharge test system according to claim 1 is characterized in that: The automatic partial discharge test system also includes an insulation test bench and a voltage regulating and filtering device arranged outside the shielded room. The insulation test bench includes a digital partial discharge detection module and a digital power frequency withstand voltage control and measurement module.

4. The C-GIS circuit breaker automatic partial discharge test system according to claim 1 is characterized in that: The automatic partial discharge test system also includes an input unit, an electric voltage regulating isolation filter device, a power frequency no-corona test transformer, a no-partial discharge protection resistor, a no-partial discharge coupling capacitor and a partial discharge filter adapter.

5. The input unit is used to detect the discharge information in the discharge test circuit, that is, the detection impedance; the partial discharge filter adapter is connected to the input unit to filter out the high-frequency interference components mixed in the partial discharge signal; the non-partial discharge protection resistor is connected between the power frequency no-corona test transformer and the no-partial discharge coupling capacitor to limit the short-circuit current when the test piece flashes over, thereby protecting the test piece and the power frequency no-corona test transformer.

6. The C-GIS circuit breaker automatic partial discharge test system according to claim 4, characterized in that: The input unit adopts a double-tuned input circuit of a high-frequency transformer, and both the primary and secondary circuits are LCR circuits, whose primary inductance is tuned with the equivalent capacitance of the test circuit within the amplifier frequency band of the partial discharge instrument.

7. The C-GIS circuit breaker automatic partial discharge test system according to claim 1, characterized in that: The shielded room is equipped with a video monitoring system, a human body induction detection device and an emergency stop button.

8. The test method of the C-GIS circuit breaker automatic partial discharge test system according to claim 1, characterized in that: The following steps are involved: S1. Use the roller AGV to connect the tooling tray with the circuit breaker to the outside of the shielded room; S2. After the automatic roller line senses the tooling pallet, it automatically flows the tooling pallet to the door of the shielding room; S3. The visual system at the door of the laboratory automatically scans the barcode of the tooling tray and displays the product information on the insulation test bench, test end equipment and production line end equipment; S4. The shielding room door opens automatically, and the automatic roller line transports the tooling tray into the test room. The tooling positioning module automatically rises to precisely position the tooling tray. S5. The automatic docking tooling of the aerial plug next to the automatic roller line automatically drives the public aerial plug to connect with the main aerial plug of the tooling tray. After power is taken on, two grounding probes are connected to the circuit breaker mechanism box and the tooling tray to complete the grounding. S6. The test end equipment automatically adjusts the automatic wiring device and test parameters to complete the corresponding test based on the circuit breaker configuration, energy storage power supply voltage, closing and opening power supply voltage, and locking power supply voltage retrieved by scanning the tooling tray barcode; S7. After the test is completed, the insulation test bench will automatically determine whether the test results are correct. If the test results are correct, they will be uploaded to the MES system of the circuit breaker production line for archiving. If the test results are incorrect, the equipment will automatically alarm; the automatic docking contacts of the public aviation plug, grounding probe and automatic phase-changing device will retract in turn, the automatic roller line will reverse, and the tooling tray will be moved to the exit position of the shielded room.

Images