Detection system for low-voltage equipment

Abstract

The invention relates to a low-voltage equipment-oriented detection system, which comprises a detection table body and a software system, and is characterized in that the detection table body is provided with a plurality of detection stations for different types of low-voltage switch devices and detection stations for a low-voltage power distribution network feeder monitoring device; one or more to-be-detected low-voltage switch devices or one or more to-be-detected low-voltage power distribution network feeder monitoring devices are arranged at corresponding detection stations through the clamping mechanism, and the software system carries out testing according to instructions and generates an electronic detection report. According to the invention, functions and performance detection of the low-voltage intelligent switch and the low-voltage power distribution network feeder monitoring device can be realized, the product quality and the network access operation standard of low-voltage power distribution equipment are improved, and safe and stable operation of the low-voltage power distribution network is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of low-voltage equipment detection, and in particular to a detection system for low-voltage equipment. Background Art

[0002] With the deepening of the construction of new power systems, low-voltage distribution networks have become the main battlefield for power grid companies to ensure people's livelihood power supply and serve the development of new energy. The continuous improvement of low-voltage electricity users' requirements for power supply reliability and power quality, and the large-scale access of new energy elements such as distributed photovoltaics and residential charging piles have made the operation of low-voltage distribution networks more complicated. Intelligent devices such as low-voltage smart switches and low-voltage distribution network feeder monitoring devices are important means to improve the transparency of low-voltage distribution networks. At present, various provinces have carried out demonstration applications of low-voltage smart devices to varying degrees, but due to the lack of unified technical standards and the lack of unified standard testing methods, the product quality is uneven, and the on-site application effect is not ideal. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a detection system for low-voltage equipment, which can realize the function and performance detection of low-voltage intelligent switches and low-voltage distribution network feeder monitoring devices, improve the product quality and network operation standards of low-voltage distribution equipment, and ensure the safe and stable operation of the low-voltage distribution network.

[0004] The technical solution adopted by the present invention to solve its technical problem is: to provide a detection system for low-voltage equipment, including a detection platform and a software system, the detection platform is provided with a plurality of detection stations for different types of low-voltage switch devices, and a detection station for a low-voltage distribution network feeder monitoring device, one or more low-voltage switch devices to be detected, or one or more low-voltage distribution network feeder monitoring devices to be detected are placed in corresponding detection stations through a clamping mechanism, and the software system performs tests according to instructions and generates an electronic detection report.

[0005] Furthermore, the clamping mechanism adopts a pneumatic automatic tightening structure for placing, clamping and unloading the device to be detected, and the placement, clamping and unloading time of a single device to be detected is not higher than a set value.

[0006] Furthermore, the internal resistance deviation between phases of the fixture of the clamping mechanism or the internal resistance deviation of the test circuit does not exceed a set value.

[0007] Furthermore, the detection positions of the low-voltage distribution network feeder monitoring device include multiple communication unit detection positions, multiple monitoring unit detection positions and multiple communication unit detection positions.

[0008] Furthermore, a pair of 8-core aviation plugs are provided under each communication unit detection position and monitoring unit detection position, and an 8-core socket and a 16p socket are provided under each communication unit detection position.

[0009] Furthermore, at least one manual wiring station is provided on the detection platform.

[0010] Furthermore, all detection stations support the output of three-phase four-wire current and voltage, as well as instantaneous function detection of 12 times the rated current, and are equipped with a communication interface.

[0011] Furthermore, all inspection stations are arranged in an inclined manner to facilitate the placement and fixation of the devices to be inspected.

[0012] Further, the tests for the low voltage switchgear to be inspected include:

[0013] Short circuit protection, over-current tripping function, and leakage protection function of low-voltage intelligent switch;

[0014] The uplink communication interoperability consistency of low-voltage intelligent switches, and the operational compatibility with handheld debugging devices;

[0015] Anti-islanding, power quality, and voltage protection functions of low-voltage intelligent switches;

[0016] The measurement functions of low-voltage intelligent switches include power, voltage, current, frequency, energy accumulation, and harmonics.

[0017] Beneficial Effects

[0018] Due to the adoption of the above-mentioned technical scheme, the present invention has the following advantages and positive effects compared with the prior art: the present invention combines the unified technical standards of low-voltage intelligent switches and low-voltage distribution network feeder monitoring devices of the State Grid Corporation of China, and designs a detection device integrating low-voltage intelligent switches and low-voltage distribution network feeder monitoring devices, thereby improving the quality and standardization level of low-voltage power distribution products, improving the construction of the low-voltage power distribution equipment supply chain, and thus improving the power grid company's low-voltage power distribution equipment operation and management level. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural layout diagram of a detection platform according to an embodiment of the present invention;

[0020] Figure 2 This is a diagram of a system login interface according to an embodiment of the present invention;

[0021] Figure 3 This is a diagram of the main system interface of an embodiment of the present invention;

[0022] Figure 4 This is a task management interface diagram of an implementation mode of the present invention;

[0023] Figure 5 is a diagram of a detection task interface according to an embodiment of the present invention;

[0024] Figure 6 It is a diagram showing information of a communication unit detection item library according to an embodiment of the present invention;

[0025] Figure 7 It is a diagram showing information of a low voltage monitoring unit detection item library according to an embodiment of the present invention;

[0026] Figure 8 It is a diagram showing information of detected equipment according to an embodiment of the present invention;

[0027] Fig. 9 It is a display diagram of the detected equipment screening information according to the embodiment of the present invention;

[0028] Fig.10 It is a display diagram of a test report according to an embodiment of the present invention. DETAILED DESCRIPTION

[0029] The present invention will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms fall within the scope limited by the appended claims of the application equally.

[0030] An embodiment of the present invention relates to a detection system for low-voltage equipment, including a detection device and a software system, wherein the detection device includes a power source, a detection platform, and supporting equipment. The detection station adopts an inclined manner to facilitate the placement and fixation of the detection product, and a single or multiple products of the same type can be detected during the detection process. Each detection line can support the output of three-phase four-wire current and voltage, and is configured with an RS485 communication interface. The detection device should have a large current switching function for detecting instantaneous protection, and the detection station supports instantaneous function detection of 12 times the rated current. The internal resistance deviation of the fixture phase to phase or the test circuit of the same equipment shall not exceed 100 microohms, and the output current accuracy can be ensured to be within ±0.05%.

[0031] like Figure 1As shown, the test bench adopts 10 test stations, stations 1-5 adopt 125A frame size, stations 6-7 adopt 250A frame size, station 8 adopts 400A frame size, station 9 is manual wiring station, and station 10 is low-voltage distribution network feeder monitoring device (monitoring unit) test station. (1-7 is a cabinet, stations 8, 9 (manual wiring), and low-voltage distribution network feeder monitoring device test stations are a cabinet). Stations 1-8 are for different types of low-voltage switch devices respectively; station 10 is for low-voltage distribution network feeder monitoring devices, including multiple communication unit test stations, multiple monitoring unit test stations, and multiple communication unit test stations. A pair of 8-core aviation plugs are provided under each communication unit test station and monitoring unit test station, and an 8-core socket and a 16p socket are provided under each communication unit test station. Station 10 also has a 16&16p plug.

[0032] The detection device can support the detection of multiple types of photovoltaic grid-connected switches with rated current (In) of 125A, 250A, 400A, 630A, etc. and the detection of low-voltage distribution network feeder monitoring devices. The clamping mechanism adopts a pneumatic automatic tightening structure. The placement, clamping and unloading time of a single product shall not exceed 4 seconds. It mainly includes testing the short-circuit protection, overcurrent tripping function, and leakage protection function of the low-voltage intelligent switch; testing the uplink communication interoperability consistency of the switch and the operational compatibility with the handheld debugging equipment; testing the anti-islanding, power quality, and voltage protection functions of the switch; testing the measurement functions of the switch: power, voltage, current, frequency, power accumulation, harmonics, etc. It has the ability to record the test data of the low-voltage intelligent switch, form an electronic version of the test report, and support report query and export functions.

[0033] The software system includes:

[0034] 1. As Figure 2 The system login interface shown;

[0035] 2. If Figure 3 The main interface of the system shown in the figure is divided into a navigation area, a statistical area, and a display area; the statistical area is used to summarize the weekly inspection, monthly inspection, total number, and today's inspection number, and the display area is used to display the equipment information inspected this week;

[0036] 3. Such as Figure 4 The task management interface shown is used to manage and maintain detection tasks. Click the "Start Detection" button in the task list to enter the detection scanning interface. Click the "Cancel Task" button in the task list to cancel the currently selected task list.

[0037] 4. Such as Figure 5 The detection task interface shown;

[0038] 5. As Figure 6 and Figure 7 The cases and item libraries shown are used to display information about the detection item library and detection cases.

[0039] 6. As Figure 8 The inspected device interface shown is used to display information about the inspected devices and provide a filtering function, which can be filtered according to the inspected device type, manufacturer name, asset ID, inspection result, last scan time, and printing status.

[0040] 7. Such as Fig. 9 and Fig.10 In the test report interface shown, after the test is completed, the system will automatically generate the corresponding test report; this interface is used to display the information of the test report and provide a filtering function, which can be filtered according to the test equipment type, asset ID, test results, creation time, and printing status.

Claims

1. A detection system for low voltage equipment, characterized in that: The invention comprises a testing platform and a software system. The testing platform is provided with a plurality of testing stations for different types of low-voltage switch devices and a testing station for a low-voltage distribution network feeder monitoring device. One or more low-voltage switch devices to be tested, or one or more low-voltage distribution network feeder monitoring devices to be tested are placed at corresponding testing stations through a clamping mechanism. The software system performs tests according to instructions and generates an electronic testing report.

2. The detection system according to claim 1, characterized in that: The clamping mechanism adopts a pneumatic automatic tightening structure for placing, clamping and unloading the device to be detected, and the placing, clamping and unloading time of a single device to be detected is not higher than the set value.

3. The detection system according to claim 2, characterized in that: The phase-to-phase internal resistance deviation of the fixture of the clamping mechanism or the internal resistance deviation of the test circuit does not exceed the set value.

4. The detection system according to claim 1, characterized in that: The detection positions of the low-voltage distribution network feeder monitoring device include a plurality of communication unit detection positions, a plurality of monitoring unit detection positions and a plurality of communication unit detection positions.

5. The detection system according to claim 4, characterized in that: There is a pair of 8-core aviation plugs under each communication unit detection position and monitoring unit detection position, and there is an 8-core socket and a 16p socket under each communication unit detection position.

6. The detection system according to claim 1, characterized in that: At least one manual wiring station is also provided on the detection platform.

7. The detection system according to claim 1, characterized in that: All detection stations support the output of three-phase four-wire current and voltage, as well as instantaneous function detection of 12 times the rated current, and are equipped with a communication interface.

8. The detection system according to claim 1, characterized in that: All inspection stations are set up in an inclined manner to facilitate the placement and fixation of the devices to be inspected.

9. The detection system according to claim 1, characterized in that: The tests for the low-voltage switchgear to be tested include: short-circuit protection, over-current tripping function, and leakage protection function of the low-voltage intelligent switch; The uplink communication interoperability consistency of low-voltage intelligent switches, and the operational compatibility with handheld debugging devices; Anti-islanding, power quality, and voltage protection functions of low-voltage intelligent switches; The measurement functions of low-voltage intelligent switches include power, voltage, current, frequency, energy accumulation, and harmonics.

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