Intelligent integrated combined electric appliance

Abstract

An intelligent integrated combined electric appliance belongs to the technical field of vacuum circuit breakers for new energy Hua transformer, and comprises a shell frame, a measurement CT, a solid-sealed vacuum arc-extinguishing chamber, an intelligent controller and an isolation knife, the intelligent controller is arranged on the shell frame, and the intelligent controller is connected with the measurement CT, the solid-sealed vacuum arc-extinguishing chamber and the isolation knife. According to the utility model, the problems that the original circuit breaker independently detects and is connected with a background or the device body is provided with an alarm and the like are solved, and meanwhile, the problems that the original method needs first-time processing, the product is generally installed in barren mountains and remote areas, and the accident source is expanded after a long time are solved; moreover, the situation that once a fault occurs on site, the equipment body gives an alarm, and due to the fact that operation and maintenance personnel are far away, the power failure time is long, the equipment personnel are not safe, and misinformation often occurs is avoided. The device is smaller in size, simpler in structure, material-saving, high in reliability and precision, and capable of intelligently isolating faults on site.

Description

Technical Field

[0001] The utility model belongs to the technical field of vacuum circuit breakers for new energy transformers, and specifically relates to an intelligent integrated combined electrical appliance. Background Art

[0002] In recent years, vacuum high-voltage circuit breakers for new energy sources such as wind power and photovoltaic power generation have been successfully applied to power systems with their simple structure, few parts, high reliability, high precision, and long service life. At present, the structure of new energy switches is developing in a diversified direction, and the disclosure of numerous patent technologies has promoted the continuous improvement of new energy switch technology. Although these patent technologies are relatively advanced, they are relatively complicated in manufacturing process and assembly, especially because of the large number, it is difficult to timely inspect and maintain them, and the operation detection and switch action of the equipment are inconsistent. The switch is opened when it should not be opened, and the switch is closed when it should not be closed. This has become the main crux of the current products. The large design volume not only wastes raw materials, but also is cumbersome and wastes labor. The live parts are exposed, which poses a great safety hazard to the operation of the line. Misoperation accidents often occur during operation, which is easy to endanger the personal safety of operators. At present, the main method in China is to connect the background to the separate detection, or install an alarm on the equipment itself. This method firstly takes time to process. This product is generally installed in remote areas of barren mountains. Over time, the source of accidents will expand. In addition, the initial investment is large, the signal cable is laid for a long time, and it is easy to be disconnected by rats during operation. Secondly, once the faulty equipment alarms on site, the operation and maintenance personnel are far away, and the accident has already occurred when they inspect the product, resulting in a long power outage and insecurity for equipment and personnel. In addition, the accuracy of existing sensing technology is unstable, and mistransmission often occurs. Summary of the invention

[0003] In order to solve the defects of the prior art, an intelligent integrated combination electrical appliance is provided, including a shell frame, a measuring CT, a sealed vacuum arc chamber, an intelligent controller, and an isolating knife. The intelligent controller is arranged on the shell frame, and the intelligent controller is connected to the measuring CT, the sealed vacuum arc chamber, and the isolating knife.

[0004] Furthermore, the isolating switch, overvoltage absorption protector, counter and intelligent controller are connected in sequence.

[0005] Furthermore, a vacuum degree sensor and a 1# temperature sensor are provided on the sealed vacuum interrupter.

[0006] Furthermore, a 2# temperature sensor is provided on the measuring CT.

[0007] Furthermore, an isolation knife position sensor and a power supply monitoring sensor are provided on the isolation knife.

[0008] Furthermore, the isolating switch is connected to the intelligent controller through a high-strength insulator, and a partial discharge sensor is arranged on the high-strength insulator.

[0009] The beneficial effects of the utility model are as follows: the utility model solves the problems of the original circuit breaker being connected to the background for separate detection, or the alarm being installed on the equipment body, and at the same time, it also solves the problem that the original method needs to be processed as soon as possible. This product is generally installed in remote areas of barren mountains, which will lead to the expansion of the source of accidents over time. In addition, it overcomes the problems of large initial investment, long signal cable laying, and easy disconnection due to rat knocking during operation; moreover, it also avoids the occurrence of the following situation: once a faulty equipment body alarms on site, the operation and maintenance personnel are far away, and the accident has already occurred when they inspect the product, resulting in a long power outage and insecurity for equipment and personnel. In addition, the accuracy of existing sensing technology is unstable, and mistransmission often occurs.

[0010] The utility model provides an intelligent integrated combined electrical appliance and its control logic which has a smaller volume, a simpler structure, saves materials, has high reliability and precision, and can intelligently isolate faults on site. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a front view of the intelligent integrated combination electrical appliance body of the utility model.

[0012] Figure 2 The utility model is a control logic diagram of an intelligent integrated combination electrical appliance.

[0013] The figures are marked as follows: 1. Frame, 2. Measuring CT, 3. 2# temperature sensor, 4. Vacuum sensor, 5. Sealed vacuum interrupter, 6. 1# temperature sensor, 7. Intelligent controller, 8. Partial discharge sensor, 9. Isolation knife, 10. Isolation knife position sensor, 11. Power supply monitoring sensor, 12. Overvoltage absorption protector, 13. Action counter. DETAILED DESCRIPTION

[0014] A smart integrated combination appliance, such as Figure 1 As shown, it includes a frame 1, a measuring CT 2, a sealed vacuum interrupter 5, an intelligent controller 7, and an isolating knife 9. The intelligent controller 7 is arranged on the frame 1, and the intelligent controller 7 is connected to the measuring CT 2, the sealed vacuum interrupter 5, and the isolating knife 9.

[0015] Among them, the isolation switch 9, the overvoltage absorption protector 12, the counter 13, and the intelligent controller 7 are connected in sequence.

[0016] Wherein, a vacuum degree sensor 4 and a No. 1 temperature sensor 6 are arranged on the sealed vacuum interrupter chamber 5 .

[0017] The above-mentioned sealed vacuum interrupter 5 is equipped with a vacuum degree sensor 4 and a 1# temperature sensor 6, which are used to monitor the vacuum degree of the vacuum interrupter and verify the arc extinguishing ability. The 1# sensor monitors the operating temperature of the conductive main circuit to prevent the overheating of the conductive circuit caused by the large current generated by the virtual connection, resulting in insulation damage and fire accidents;

[0018] Wherein, a 2# temperature sensor 3 is provided on the measuring CT2.

[0019] The above-mentioned measuring CT2 is internally equipped with a 2# temperature sensor 3, which is used to monitor the temperature of the conductive main circuit and cooperate with the 1# temperature sensor to protect the safe operation of the intelligent integrated combination electrical appliance;

[0020] Wherein, an isolation knife position sensor 10 and a power supply monitoring sensor 11 are arranged on the isolation knife 9 .

[0021] The isolating switch 9 is connected to the intelligent controller 7 through a high-strength insulator, and a partial discharge sensor 8 is arranged on the high-strength insulator.

[0022] The above-mentioned sealed vacuum interrupter 5 and the isolation switch insulation support are integrated, and the partial discharge sensor 8 monitors the insulation state of the whole machine during operation to ensure stable and reliable operation of the equipment;

[0023] The above sensors need to be sampled, analyzed and converted by the intelligent controller 7 before issuing a command to close or open the intelligent integrated combination electrical appliance;

[0024] The power monitoring sensor 11 mentioned above cannot open the equipment protection door when the equipment is running, which can ensure that the operator does not make an error operation or enter the live part by mistake;

[0025] The above-mentioned overvoltage absorption protector 12 and counter 13 are installed in one body, which is convenient for observing the number of actions and reducing the installation size;

[0026] The utility model is specifically according to Figure 2 Control logic implemented:

[0027] 1. The frame 1 is equipped with a sealed vacuum interrupter 5, a measuring CT 2, an intelligent controller 7, and an isolating knife 9 is installed above the overvoltage absorption protector 12 and the counter 13;

[0028] 2. The isolating knife 9 is equipped with a sensor to detect the position of the isolating knife. If the isolating knife is not closed, the open point in the smart controller will remain, the closing circuit will be disconnected, and the switch will be strictly closed. If the isolating knife is closed, the internal power of the smart controller will be converted to the closed point, and the closing circuit will be converted to the closed point, and the switch can be closed. For the remote control switch, it is impossible to observe the isolation position, which will prevent major accidents caused by closing the isolating knife with load;

[0029] 3. The sealed vacuum interrupter 5 is equipped with a vacuum sensor 4 and a 1# temperature sensor 6, which are used to monitor the vacuum degree of the vacuum interrupter 5. If the vacuum is low, the intelligent controller will change the closed point to an open point, disconnect the switch circuit, and prevent the switch from opening, which may cause an outgoing line accident due to a decrease in arc extinguishing ability. The 1# sensor 6 monitors the operating temperature of the conductive main circuit. If the operating temperature is too high, the intelligent controller will change the open point to a closed point, and turn on the switch circuit to prevent the conductive circuit from overheating, causing insulation damage and fire accidents.

[0030] 4. Measurement CT2 is equipped with 2# temperature sensor 3, which is used to monitor the temperature of the conductive main circuit and cooperate with 1# temperature sensor 6 to protect the intelligent integrated combination electrical appliance. If 2# sensor 3 detects a temperature change, but 1# temperature sensor 6 does not detect a temperature change, the intelligent controller will only give an alarm and will not trip. If 1# temperature sensor 6 also detects a temperature change, but does not reach the trip temperature set by 1# temperature sensor 6, but both sensors send signals at the same time, the intelligent controller will also change the open point to the closed point and perform a trip operation output to ensure the safe operation of the equipment.

[0031] 5. The sealed vacuum interrupter 5 and the isolating switch insulation support are integrated. The partial discharge sensor monitors the insulation status of the whole machine during operation. If the partial discharge of the insulating part increases, the intelligent controller will consider that the insulation is damaged, change the open point to the closed point, and perform the opening operation to ensure that the equipment will not cause grounding or phase short circuit due to insulation damage, causing accidents;

[0032] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A smart integrated combination electrical appliance, characterized in that: The invention comprises a housing (1), a measuring CT (2), a sealed vacuum interrupter (5), an intelligent controller (7), and an isolating knife (9). The intelligent controller (7) is arranged on the housing (1), and the intelligent controller (7) is connected to the measuring CT (2), the sealed vacuum interrupter (5), and the isolating knife (9).

2. The intelligent integrated combination electrical appliance according to claim 1, characterized in that: The isolating switch (9), the overvoltage absorption protector (12), the counter (13), and the intelligent controller (7) are connected in sequence.

3. The intelligent integrated combination electrical appliance according to claim 1, characterized in that: The sealed vacuum interrupter (5) is provided with a vacuum degree sensor (4) and a No. 1 temperature sensor (6).

4. The intelligent integrated combination electrical appliance according to claim 1, characterized in that: The measuring CT (2) is provided with a 2# temperature sensor (3).

5. The intelligent integrated combination electrical appliance according to claim 1, characterized in that: The isolating knife (9) is provided with an isolating knife position sensor (10) and a power supply monitoring sensor (11).

6. The intelligent integrated combination electrical appliance according to claim 1, characterized in that: The isolating knife (9) is connected to the intelligent controller (7) via a high-strength insulator, and a partial discharge sensor (8) is arranged on the high-strength insulator.

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