Intelligent high-voltage equipment

Abstract

The utility model discloses intelligent high-voltage equipment which comprises a switch cabinet, a circuit breaker operating mechanism and an isolation grounding switch mechanism are fixed in the switch cabinet, the switch cabinet further comprises an intelligent comprehensive monitoring device, and the intelligent comprehensive monitoring device is connected with an upper computer through an upward communication module. The intelligent comprehensive monitoring device comprises a 220V power supply module, a circuit breaker on-line monitoring module, a three-station on-line monitoring module and a temperature on-line monitoring module, the circuit breaker on-line monitoring module is connected with a circuit breaker operating mechanism in the switch cabinet, and the three-station on-line monitoring module is connected with an isolation grounding switch mechanism in the switch cabinet. According to the utility model, different mechanisms are monitored through different sensors or monitoring circuits, wire inlets and wire outlets are standardized, and when intelligent assemblies are set, operation is only needed at corresponding interfaces, so that the cost is saved, the interface wiring number is reduced, and the purposes of energy conservation and efficiency improvement are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of detection devices for switch cabinets, and particularly to an intelligent high-voltage device. Background Technique

[0002] With the rapid development of the Internet of Things and 5G communication technologies, the combination of the two applied to high-speed railways has accelerated the development speed of Chinese high-speed railways towards the intelligent direction. The requirements for the miniaturization, maintenance-free, and intelligent of switchgear in traction substations are getting higher and higher. At present, the application of intelligent traction substations in China is still in its infancy. The equipment is not intelligent enough, not environmentally friendly enough, and the operation status is mainly judged and maintained manually. There are problems such as a high error rate of personnel in judging faults, high costs for training and maintaining personnel, and high operation and maintenance costs. With the rapid development of electrified railways in China, intelligent railways are an inevitable trend in railway development.

[0003] The existing GIS switchgear equipment requires a large number of electronic devices for monitoring. It is easy for the electronic devices to affect each other, which is likely to reduce the accuracy of the detection results. Moreover, the communication protocols used by each electronic device to transmit data are different. When the upper-layer network interacts with each electronic device, different communication protocols need to be used for different electronic devices, and there will also be problems with complex wiring of the intelligent network formed. This is not only not conducive to subsequent troubleshooting and maintenance, but also not conducive to the in-situ setting of intelligent components. Content of the Utility Model

[0004] The purpose of the utility model is to provide an intelligent high-voltage device. By setting different sensors or monitoring circuits to monitor the corresponding mechanisms, the inlet and outlet ports are standardized. When setting the intelligent components, only corresponding interface operations are required, which solves the problems of a large number of intelligent products in the current GIS switchgear, complex network interfaces of intelligent components, and being not conducive to in-situ setting. Moreover, because all intelligent components are integrated together, the cost is saved, the number of interface wirings is reduced, and the purpose of energy conservation and efficiency improvement is achieved.

[0005] The utility model provides the following technical solution: an intelligent high-voltage device, including a switch cabinet, wherein a breaker operating mechanism and an isolating earthing switch mechanism are fixed inside the switch cabinet. The switch cabinet also includes an intelligent integrated monitoring device, which is connected to a host computer through an upward communication module. The intelligent integrated monitoring device includes a 220V power supply module, a breaker on-line monitoring module, a three-position on-line monitoring module, and a temperature on-line monitoring module. The 220V power supply module is used for power supply. The breaker on-line monitoring module is used for monitoring the state of the breaker. The breaker on-line monitoring module is connected to the breaker operating mechanism inside the switch cabinet. The three-position on-line monitoring module is used for monitoring the state of the three-position mechanism of the switch cabinet. The three-position on-line monitoring module is connected to the isolating earthing switch mechanism inside the switch cabinet. The temperature on-line monitoring module is used for monitoring the temperature inside the switch cabinet. A vacuum joint and a flange are also fixed inside the switch cabinet. The temperature on-line monitoring module is sequentially connected to the vacuum joint and the flange. The intelligent integrated monitoring device is also connected to a downward communication module. The downward communication module is connected to a lightning arrester on-line monitoring module, an environmental protection gas on-line monitoring module, and a partial discharge on-line monitoring module. The lightning arrester on-line monitoring module is used for monitoring the leakage current and discharge times of the lightning arrester. The environmental protection gas on-line monitoring module is used for monitoring and collecting data of the environmental protection gas chamber inside the switch cabinet. The partial discharge on-line monitoring module is used for monitoring the partial discharge signal inside the switch cabinet.

[0006] In order to collect the state of the breaker mechanism, the breaker on-line monitoring module consists of the breaker loop energy storage motor loop part, and a sensor is used to collect the mechanical characteristics of the breaker in the GIS switch cabinet.

[0007] In order to monitor and collect the data of the breaker, a breaker auxiliary contact, a breaker closing and opening coil loop, a power supply for the energy storage motor loop, and an AD sampling module are also arranged inside the switch cabinet. The sensor is connected in series with the breaker auxiliary contact and the breaker closing and opening coil loop inside the switch cabinet. The AD sampling module is used to detect the breaker closing and opening times, the breaker closing and opening loop current, the breaker closing and opening time, and the breaker closing and opening current curve.

[0008] In order to collect the state of the three-position mechanism, the three-position on-line monitoring module consists of the three-position loop part, and a sensor is used to collect the state of the three-position mechanism of the GIS switch cabinet.

[0009] In order to monitor and collect the data of the three-position mechanism, a three-position mechanism auxiliary contact and a three-position motor loop are arranged inside the switch cabinet. The sensor is connected in series with the three-position mechanism auxiliary contact to detect the operating time of the isolating motor of the three-position, the operating current of the isolating motor, the operating time of the earthing motor, the operating current of the earthing motor, and the action times of the three-position mechanism.

[0010] To monitor the temperature inside the switchgear cabinet, the on-line temperature monitoring module uses a temperature sensor to monitor the temperature inside the switchgear cabinet. The temperature sensor is encapsulated in a stainless steel protective cover, and its electrical signal is connected to the other side of the flange through a vacuum joint and extends into the cabinet body. The flange is sealed with the cabinet body through a sealing ring to achieve temperature measurement.

[0011] The on-line monitoring module for the lightning arrester is a lightning arrester leakage current sensor, the on-line monitoring module for the environmentally friendly gas is an environmentally friendly gas sensor, and the on-line monitoring module for partial discharge is a partial discharge sensor.

[0012] Compared with the prior art, the beneficial effects achieved by the present utility model are as follows: Through the on-line monitoring module for the circuit breaker, the on-line monitoring module for the three-position mechanism, and the on-line monitoring module for the temperature, data monitoring and collection are respectively carried out on the circuit breaker, the three-position mechanism, and the temperature of the switchgear cabinet, and the data is transmitted to the upper computer for real-time monitoring. Different circuits or sensors are used to monitor the corresponding mechanisms. When setting up the intelligent components, only operations need to be performed at the corresponding interfaces, which can solve the problems that there are many intelligent products in the current GIS switchgear cabinet, the network interfaces of the intelligent components are complex, and it is not conducive to in-situ setting. Moreover, due to the integration of various intelligent components of the GIS, the cost is saved, the number of interface wirings is reduced, and the purpose of energy saving and efficiency improvement is achieved. Description of the Drawings

[0013] The drawings are used to provide a further understanding of the present utility model and constitute a part of the specification. They are used together with the embodiments of the present utility model to explain the present utility model and do not constitute a limitation to the present utility model. In the drawings:

[0014] Figure 1 is a schematic diagram of the system structure of the present utility model;

[0015] Figure 2 is a schematic diagram of the sampling of the present utility model;

[0016] Figure 3 is a schematic diagram of the communication with the lower level of the present utility model;

[0017] In the figure: 1. Upper computer; 2. 220V power supply module; 3. On-line monitoring module for circuit breaker; 4. On-line monitoring module for three-position mechanism; 5. Circuit breaker operating mechanism; 6. Isolation and earthing switch mechanism; 7. On-line monitoring module for lightning arrester; 8. On-line monitoring module for environmentally friendly gas; 9. Lightning arrester leakage current sensor; 10. Environmentally friendly gas sensor; 11. Communication module with the lower level; 12. Intelligent integrated monitoring device; 13. On-line monitoring module for temperature; 14. Temperature sensor; 15. On-line monitoring module for partial discharge; 16. Partial discharge sensor. Detailed Embodiments

[0018] Next, in combination with the accompanying drawings in the embodiments of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model. Embodiment

[0019] Please refer to Figure 1 , the present utility model provides a technical solution: an intelligent high-voltage device, including a switch cabinet, in which a circuit breaker operating mechanism 5 and an isolating earthing switch mechanism 6 are fixed. The switch cabinet also includes an intelligent integrated monitoring device 12. The intelligent integrated monitoring device 12 is connected to a host computer 1 through an upward communication module. The intelligent integrated monitoring device 12 includes a 220V power supply module 2, a circuit breaker online monitoring module 3, a three-position online monitoring module 4, and a temperature online monitoring module 13. The 220V power supply module 2 is used for power supply. After the 220V power supply is input, it is converted into 12V and 5V DC power supplies by the 220V power supply module 2 to supply power to the circuit. The circuit breaker online monitoring module 3 is used to monitor the state of the circuit breaker. The circuit breaker online monitoring module 3 is connected to the circuit breaker operating mechanism 5 in the switch cabinet. The three-position online monitoring module 4 is used to monitor the state of the three-position mechanism of the switch cabinet. The three-position online monitoring module 4 is connected to the isolating earthing switch mechanism 6 in the switch cabinet. The temperature online monitoring module 13 is used to monitor the temperature in the switch cabinet through a temperature sensor 14. A vacuum joint and a flange are also fixed in the switch cabinet. The temperature online monitoring module 13 is sequentially connected to the vacuum joint and the flange. The intelligent integrated monitoring device 12 is also connected to a downward communication module 11. The downward communication module 11 is connected to a lightning arrester online monitoring module 7, an environmental protection gas online monitoring module 8, and a partial discharge online monitoring module 15. The lightning arrester online monitoring module 7 is used to monitor the leakage current and discharge times of the lightning arrester. The environmental protection gas online monitoring module 8 is used to monitor and collect data of the environmental protection gas chamber in the cabinet. The partial discharge online monitoring module 15 is used to monitor the partial discharge signal of the switch cabinet. The monitoring data of the circuit breaker online monitoring module 3, the three-position online monitoring module 4, the temperature online monitoring module 13, the lightning arrester online monitoring module 7, the environmental protection gas online monitoring module 8, and the partial discharge online monitoring module 15 will be transmitted to the host computer 1, and the switch cabinet is monitored in real time through the host computer 1. At the same time, different monitoring modules monitor different intelligent components. And when setting the intelligent components, only operations need to be performed at the corresponding interfaces, which solves the problem that there are many intelligent products in the current GIS switch cabinet, the network interfaces of the intelligent components are complex, and it is not conducive to in-situ setting. Moreover, integrating each intelligent component reduces the number of interface wirings, saves costs, and achieves the purpose of energy conservation and efficiency improvement.

[0020] The on-line monitoring module 3 of the circuit breaker consists of the circuit energy storage motor circuit part of the circuit breaker, and uses sensors to collect the mechanical characteristics of the circuit breaker in the GIS switch cabinet.

[0021] The switch cabinet is also provided with breaker auxiliary contacts, breaker closing and opening coil circuits, power supplies for the energy storage motor circuit, and an AD sampling module. The sensors are connected in series with the breaker auxiliary contacts and the breaker closing and opening coil circuits in the switch cabinet, and the AD sampling module is used to detect the number of breaker closing and opening operations, the current in the breaker closing and opening circuits, the breaker closing and opening time, and the breaker closing and opening current curve.

[0022] The on-line monitoring module 4 of the three-position switch consists of the three-position circuit part, and uses sensors to collect the status of the three-position mechanism in the GIS switch cabinet.

[0023] The switch cabinet is provided with three-position mechanism auxiliary contacts and a three-position motor circuit. The sensors are connected in series with the three-position mechanism auxiliary contacts to detect the working time and current of the isolating motor, the working time and current of the grounding motor, and the number of operations of the three-position mechanism.

[0024] As Figure 2 shown, the sensor CUR1 detects the current in the second opening coil circuit, the sensor CUR2 detects the current in the breaker closing coil circuit, the sensor CUR3 detects the current in the three-position grounding motor circuit, the sensor CUR4 detects the current in the opening coil circuit, the sensor CUR5 detects the current in the three-position isolating motor circuit, and the sensor CUR6 detects the voltage and current of the energy storage motor. After the sensors collect the signals, through the auxiliary circuit, the analog signals are uploaded to the Figure 2 chip in. According to the ADC sampling principle, the chip converts the analog signals into digital signals and displays them through the display screen. The upper communication module uploads the characteristics of the breaker operating mechanism 5 and the characteristics of the three-position operating mechanism 6 to the upper computer 1.

[0025] The temperature on-line monitoring module 13 includes a temperature sensor 14 for collecting the temperature inside the switch cabinet. After detecting the temperature using the AD sampling circuit, the temperature sensor uploads the temperature data to the chip and displays it through the display screen.

[0026] The temperature sensor 14 is encapsulated in a stainless steel protective cover. The electrical signal of the temperature sensor 14 is connected to the other side of the flange through a vacuum joint. The flange is sealed with the cabinet body of the switch cabinet through a sealing ring to realize the measurement of the gas temperature inside the switch cabinet. The temperature sensor 14 uploads the temperature analog signal to the chip through the auxiliary circuit. According to the ADC sampling principle, the chip converts the voltage signal into temperature and displays it through the display screen.

[0027] The on-line monitoring module 7 of the lightning arrester is the leakage current sensor 9 of the lightning arrester, the on-line monitoring module 8 of the environmental protection gas is the environmental protection gas sensor 10, and the on-line partial discharge monitoring module 15 is the partial discharge sensor 16.

[0028] As Figure 3 shown, the lower communication module 11 reads the density and pressure values of the environmental protection gas chamber of the switch cabinet through the Modbus communication protocol, and transmits the data to the chip through the lower communication module 11. The chip processes the data, stores it in the data collection module, i.e., the register, and displays it on the display screen. The upper communication module also communicates with the on-line monitoring module 7 of the lightning arrester according to the Modbus communication protocol, reads the lightning arrester leakage current data collected by the host of the on-line monitoring module 7 of the lightning arrester, and displays the processed data through the display screen after being processed by the chip. The upper communication module communicates with the on-line partial discharge monitoring module 15 according to the Modbus communication protocol, reads the partial discharge signal of the switch cabinet collected by the host of the on-line partial discharge monitoring module 15, and displays the processed data through the display screen after being processed by the chip.

[0029] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An intelligent high-voltage device, including a switch cabinet, wherein a circuit breaker operating mechanism and an isolating earthing switch mechanism are fixed inside the switch cabinet, and it is characterized in that: The switchgear cabinet also includes an intelligent comprehensive monitoring device, which is connected to a host computer through an upward communication module. The intelligent comprehensive monitoring device includes a 220V power supply module, a circuit breaker on-line monitoring module, a three-position on-line monitoring module, and a temperature on-line monitoring module. The 220V power supply module is used for power supply. The circuit breaker on-line monitoring module is used to monitor the state of the circuit breaker. The circuit breaker on-line monitoring module is connected to the circuit breaker operating mechanism in the switchgear cabinet. The three-position on-line monitoring module is used to monitor the state of the three-position mechanism of the switchgear cabinet. The three-position on-line monitoring module is connected to the isolating earthing switch mechanism in the switchgear cabinet. The temperature on-line monitoring module is used to monitor the temperature in the switchgear cabinet. A vacuum joint and a flange are also fixed in the switchgear cabinet. The temperature on-line monitoring module is sequentially connected to the vacuum joint and the flange. The intelligent comprehensive monitoring device is also connected to a downward communication module. The downward communication module is connected to a lightning arrester on-line monitoring module, an environmental protection gas on-line monitoring module, and a partial discharge on-line monitoring module. The lightning arrester on-line monitoring module is used to monitor the leakage current and discharge times of the lightning arrester. The environmental protection gas on-line monitoring module is used to monitor and collect data of the environmental protection gas chamber in the switchgear cabinet. The partial discharge on-line monitoring module is used to monitor the partial discharge signal of the switchgear cabinet.

2. An intelligent high-voltage device according to claim 1, characterized in that: The circuit breaker on-line monitoring module consists of the circuit breaker loop energy storage motor loop part, and uses sensors to collect the mechanical characteristics of the circuit breaker of the GIS switchgear cabinet.

3. An intelligent high-voltage device according to claim 2, characterized in that: The switchgear cabinet is also provided with a circuit breaker auxiliary contact, a circuit breaker closing and opening coil loop, a power supply of the energy storage motor loop, and an AD sampling module. The sensor is connected in series with the circuit breaker auxiliary contact and the circuit breaker closing and opening coil loop in the switchgear cabinet. The AD sampling module is used to detect the number of circuit breaker closing and opening operations, the current of the circuit breaker closing and opening loop, the circuit breaker closing and opening time, and the circuit breaker closing and opening current curve.

4. An intelligent high-voltage device according to claim 1, characterized in that: The three-position on-line monitoring module consists of the three-position loop part, and uses sensors to collect the state of the three-position mechanism of the GIS switchgear cabinet.

5. An intelligent high-voltage device according to claim 4, characterized in that: The switchgear cabinet is provided with a three-position mechanism auxiliary contact and a three-position motor loop. The sensor is connected in series with the three-position mechanism auxiliary contact to detect the working time of the isolating motor, the working current of the isolating motor, the working time of the earthing motor, the working current of the earthing motor, and the number of operations of the three-position mechanism.

6. An intelligent high-voltage device according to claim 1, characterized in that: The temperature on-line monitoring module uses a temperature sensor to monitor the temperature in the switchgear cabinet. The temperature sensor is encapsulated in a stainless steel protective cover. The electrical signal of the temperature sensor is connected to the other side of the flange through a vacuum joint and extends into the switchgear cabinet. The flange is sealed with the switchgear cabinet through a sealing ring to realize temperature measurement.

7. An intelligent high-voltage device according to claim 1, characterized in that: The lightning arrester on-line monitoring module is a lightning arrester leakage current sensor. The environmental protection gas on-line monitoring module is an environmental protection gas sensor. The partial discharge on-line monitoring module is a partial discharge sensor.

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