Factory safety parameter detection device for filter capacitor

Abstract

The utility model relates to a filter capacitor factory safety parameter detection device, which comprises a device main body, two interlayers are arranged in the device main body, the device main body is divided into three chambers by the interlayers, a current transformer, a test transformer and a harmonic source are arranged in the bottom chamber, a guide rail is arranged on the middle interlayer, and the middle interlayer is connected with the guide rail. A data collector and two alternating current contactors are arranged on the guide rail, a molded case circuit breaker is arranged on the interlayer on the topmost surface, the current transformer is connected with the data collector through a secondary cable, and the two alternating current contactors are respectively connected with a harmonic source. The device is different from factory detection equipment of traditional capacitor manufacturers, is a secondary factory detection device suitable for harmonic suppression manufacturers, and can better feed back the actual use effect of the capacitor, confirm the use safety of the capacitor and ensure that field application conforms to the scheme expectation.

Description

Technical Field

[0001] The utility model relates to the technical field of filter capacitor detection, in particular to a factory safety parameter detection device for filter capacitors. Background Art

[0002] In the current stage of power grid harmonic control, active and passive solutions are mostly used. Among them, the passive filtering solution is low in cost, stable in operation, and easy to maintain and is widely used. The main principle of the passive filtering solution is to use filter capacitors and tuned reactors to form a low-impedance channel for specific harmonics, and use the principle of low-impedance shunt to guide harmonics into the filter device, thereby reducing the harmonic components flowing to the system side. The filter capacitor in the passive filter is the most important core of the device. Compared with the tuned reactor, the filter capacitor is a consumable part. If the design parameters are not up to standard, there are manufacturing deviations, and the operation is unstable, the capacitor may bulge, leak, or even cause resonance to cause the capacitor to explode. Major safety accidents.

[0003] At present, capacitor manufacturers will conduct multiple tests when producing capacitors, and there are standardized processes such as factory tests. However, as an application-end harmonic control enterprise, it should be clear that the environment of the factory test is very different from the environment of the harmonic control site. The operating environment of the capacitor on site is much worse than that during the test. If the conventional test power supply is used as the basis for factory inspection, the actual operation of the filter capacitor will be difficult to control. It is possible that the capacitor will have a rapid capacitance decay after running for a period of time, the insulation of the capacitor will not meet the standards in the harmonic environment, and phase-to-phase and phase-to-ground discharges may occur, or even serious breakdown short-circuit accidents. Filter capacitors that have not been strictly tested in harmonic environments will also become a huge safety hazard at the customer's site. In view of this defect, this invention is specially designed. Utility Model Content

[0004] In order to solve the above-mentioned problems in the prior art, the utility model provides a device for detecting factory safety parameters of filter capacitors, which can improve the above-mentioned deficiencies.

[0005] The utility model relates to a factory safety parameter detection device for a filter capacitor, comprising a device body, wherein two partitions are arranged in the device body, and the partitions divide the device body into three chambers, wherein a current transformer, a test transformer and a harmonic source are arranged in the bottom chamber, a guide rail is arranged on the middle partition, a data collector and an AC contactor are arranged on the guide rail, a molded case circuit breaker is arranged on the topmost partition, the current transformer is connected to the data collector through a secondary cable, there are two AC contactors, the two AC contactors are respectively connected to the harmonic source, and are connected to the molded case circuit breaker at the same time, the test transformer is connected to the current transformer through the secondary cable, the test transformer is connected to one of the AC contactors, a voltage test clamp is arranged outside the device, and the voltage test clamp is connected to the current transformer through a primary cable.

[0006] Furthermore, a human-machine interaction screen is arranged on the top surface of the device body, and the human-machine interaction screen is communicatively connected with the harmonic source to simulate the required harmonic environment.

[0007] Furthermore, an infrared sensor is arranged below the front of the device body, and the infrared sensor is connected to the human-computer interaction screen through a secondary cable. The human-computer interaction screen can recognize this signal and judge through a program whether there is someone operating in front of the current device.

[0008] The utility model has a novel structure. The factory safety parameter detection device for the filter capacitor has a compact structure and small space occupation. The principle is easy to understand, the operation is user-friendly, and the safety and reliability are high. Compared with the factory detection of traditional capacitors, which mostly use digital bridges to measure capacitance and withstand voltage testers to measure withstand voltage, it requires multiple instruments to assist in completing the test work. This design can solve the capacitance measurement and withstand voltage test requirements with only one device and at the same time has the most important harmonic environment operation test for the filter capacitor. This design also emphasizes the principles of standardized testing and safe operation. The external infrared sensor in front of the device can only send an operation permission signal when it detects someone in front, avoiding the problem of electric shock accidents caused by mistakenly starting the power supply when the test cable is connected. At the same time, the device also has a safety detection protection circuit. After connecting the capacitor cable to be tested, the device is started. It preferentially uses a safe low voltage output for circuit safety detection. Only after passing the safety detection can the subsequent formal detection process be carried out, thereby avoiding dangerous accidents caused by wiring errors, component short circuits, etc., and protecting personal safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the structure of the utility model.

[0010] Illustration: 1 infrared sensor, 2 voltage test clamp, 3 current transformer, 4 test transformer, 5 harmonic source, 6 housing, 7 data logger, 8 AC contactor a, 9 AC contactor b, 10 molded case circuit breaker, 11 human-machine interaction screen. DETAILED DESCRIPTION

[0011] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0012] like Figure 1 The utility model relates to a factory safety parameter detection device for a filter capacitor, comprising a device body, wherein two partitions are arranged in the device body, and the partitions divide the device body into three chambers, wherein a current transformer 3, a test transformer 4 and a harmonic source 5 are arranged in the bottom chamber, a guide rail is arranged on the middle partition, a data collector 7 and a first AC contactor 8 and a second AC contactor 9 are arranged on the guide rail, a molded case circuit breaker 10 is arranged on the topmost partition, the current transformer is connected to the data collector through a secondary cable, the input ends of the first AC contactor 8 and the second AC contactor 9 are respectively connected to the harmonic source input end, and are simultaneously connected to the molded case circuit breaker, the output end of the molded case circuit breaker is connected to a three-phase power terminal, the test transformer 4 is connected to the current transformer 3 through a secondary cable, the test transformer is connected to the second AC contactor 9, a voltage test clamp is arranged outside the device, and the voltage test clamp is connected to the current transformer through a primary cable.

[0013] As a technical improvement, a human-machine interaction screen 11 is arranged on the top surface of the device body, and the human-machine interaction screen is communicatively connected with the harmonic source to simulate the required harmonic environment.

[0014] As a technical improvement, an infrared sensor 1 is arranged below the front of the device body, and the infrared sensor is connected to the human-computer interaction screen through a secondary cable. The human-computer interaction screen can recognize this signal and judge through a program whether there is someone operating in front of the current device.

[0015] This device is different from the factory inspection equipment of traditional capacitor manufacturers. It is a secondary factory inspection device suitable for harmonic control manufacturers. It can better feedback the actual use effect of the capacitor, confirm the safety of capacitor use, and ensure that the on-site application meets the expectations of the plan.

[0016] The device has a simple structure, a short processing and production cycle, and a low cost. It has a high degree of intelligence after adding a human-computer interaction system. On the basis of improving the traditional detection process, it liberates manpower and improves the accuracy and efficiency of the detection work.

Claims

1. A filter capacitor factory safety parameter detection device, characterized in that: The invention comprises a device body, wherein two partitions are arranged in the device body, and the partitions divide the device body into three chambers, wherein a current transformer, a test transformer and a harmonic source are arranged in the bottom chamber, a guide rail is arranged on the middle partition, a data collector and an AC contactor are arranged on the guide rail, a molded case circuit breaker is arranged on the topmost partition, the current transformer is connected to the data collector through a secondary cable, there are two AC contactors, the two AC contactors are respectively connected to the harmonic source and are connected to the molded case circuit breaker at the same time, the test transformer is connected to the current transformer through the secondary cable, the test transformer is connected to one of the AC contactors, a voltage test clamp is arranged outside the device, and the voltage test clamp is connected to the current transformer through a primary cable.

2. A filter capacitor factory safety parameter detection device according to claim 1, characterized in that: A human-machine interaction screen is arranged on the top surface of the device body, and the human-machine interaction screen is communicatively connected with the harmonic source to simulate the required harmonic environment.

3. A filter capacitor factory safety parameter detection device according to claim 1, characterized in that: An infrared sensor is arranged below the front of the device body, and the infrared sensor is connected to the human-machine interaction screen through a secondary cable. The human-machine interaction screen can recognize this signal and judge through a program whether there is someone operating in front of the current device.

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