CN219779857U - Intelligent high-voltage alternating-current isolating switch and intelligent power grid system - Google Patents

Abstract

The utility model discloses an intelligent high-voltage alternating current isolating switch, which comprises a switch assembly and a detection device; the switch assembly is suitable for conducting or disconnecting the high-voltage alternating current circuit; the detection device is arranged on the switch assembly and is powered by the high-voltage alternating current circuit; the detection device is suitable for detecting the state of the high-voltage alternating current circuit and the state of the switch assembly, and sending the detection result to the monitoring center in real time. A smart grid system including a plurality of the intelligent high voltage AC isolating switches described above is also disclosed. The utility model has the beneficial effects that: through installing detection device on the switch module, can real-time detection and send to monitoring center to switch module and high voltage alternating current circuit's state to when high voltage alternating current circuit or switch module break down, maintainer can in time discover. And according to the position of the detection device recorded by the monitoring center, the fault point can be rapidly positioned, so that the fault can be rapidly maintained.

Description

Intelligent high-voltage alternating-current isolating switch and intelligent power grid system

Technical Field

The utility model relates to the technical field of high-voltage equipment, in particular to an intelligent high-voltage alternating current isolating switch.

Background

The high-voltage switch is mainly used for switching on and off a high-voltage circuit above 3kV, and the common high-voltage switch comprises a vacuum breaker, an oil breaker, a sulfur hexafluoride (SF 6) breaker and the like.

The existing high-voltage switch can only switch on and off the high-voltage circuit generally, but cannot monitor the state. In the actual use process of the high-voltage switch, when the high-voltage switch fails, maintenance personnel cannot know the failure in time, so that the circuit failure is further enlarged, and further fire, electric leakage or power failure accidents are caused. With the development of intelligent technology, an intelligent high-voltage alternating current isolating switch and an intelligent power grid system are urgently needed.

Disclosure of Invention

One of the objects of the present utility model is to provide a disconnecting switch capable of detecting the state of a high-voltage circuit.

It is another object of the present utility model to provide a smart grid system that enables fault localization.

In order to achieve at least one of the above objects, the present utility model adopts the following technical scheme: an intelligent high-voltage alternating current isolating switch comprises a switch assembly and a detection device; the switch assembly is suitable for conducting or disconnecting a high-voltage alternating current circuit; the detection device is arranged on the switch assembly and is powered by a high-voltage alternating current circuit; the detection device is suitable for detecting the state of the high-voltage alternating current circuit and the state of the switch assembly, and sending the detection result to the monitoring center in real time.

Preferably, the switch assembly comprises a pair of contacts and a contact blade, and the two contacts are connected or disconnected through the contact blade so as to realize the connection and disconnection of a high-voltage alternating current circuit; the detection device is arranged on the touch knife.

Preferably, the detection device comprises a shell, a detection module and a power supply module; the shell is made of insulating materials, the detection module and the power supply module are arranged inside the shell, and the power supply module is suitable for supplying power to the detection module through a high-voltage alternating current circuit; the detection module is suitable for detecting the state of the high-voltage alternating current circuit and the state of the switch assembly, and sending the detection result to the monitoring center in real time.

Preferably, the shell is annular and sleeved on the contact knife.

Preferably, the power supply module is adapted to supply power to the detection module by electromagnetic induction of a high voltage ac circuit.

Preferably, the detection module comprises a circuit detection unit, a temperature detection unit and a communication unit; the circuit detection unit is suitable for detecting the state of a high-voltage alternating current circuit, and the temperature detection unit is suitable for detecting the temperatures of the contact and the contact knife; the communication unit is respectively and electrically connected with the circuit detection unit and the temperature detection unit, and is suitable for sending detection results of the circuit detection unit and the temperature detection unit to a monitoring center in real time.

Preferably, the circuit detection unit includes a voltage detection unit; the voltage detection unit is suitable for detecting the voltage of the high-voltage alternating current circuit flowing through the contact knife.

Preferably, the circuit detection unit includes a current detection unit; the current detection unit is suitable for detecting the current flowing through the high-voltage alternating current circuit of the contact knife.

A smart grid system comprises a plurality of the intelligent high-voltage alternating-current isolating switches.

Preferably, the smart grid system further comprises a monitoring center; the monitoring center is suitable for recording the positions of the detection devices corresponding to the intelligent high-voltage alternating current isolating switches, and further when any detection device sends a fault signal to the monitoring center, the monitoring center is suitable for obtaining the specific positions of the failed high-voltage alternating current circuit and/or the intelligent high-voltage alternating current isolating switches according to the positions of the detection devices.

Compared with the prior art, the utility model has the beneficial effects that:

through installing detection device on the switch module, can real-time detection and send to monitoring center to the state of switch module and high voltage alternating current circuit to maintenance personnel only need the monitoring center can know the running state of high voltage alternating current circuit and switch module. And then maintenance personnel can discover in time when the high-voltage alternating current circuit or the switch assembly fails. And according to the position of the detection device recorded by the monitoring center, the fault point can be rapidly positioned, so that the fault can be rapidly maintained.

Drawings

Fig. 1 is a schematic diagram of the overall structure of an intelligent high-voltage ac isolating switch according to the present utility model.

Fig. 2 is a schematic diagram of the overall structure of the detection device in the present utility model.

In the figure: the contact 100, the contact blade 200, the detection device 3, the housing 31, the power supply module 32, the communication unit 33, the temperature detection unit 34, the voltage detection unit 35, and the current detection unit 36.

Detailed Description

The present utility model will be further described with reference to the following specific embodiments, and it should be noted that, on the premise of no conflict, new embodiments may be formed by any combination of the embodiments or technical features described below.

In the description of the present utility model, it should be noted that, for the azimuth words such as terms "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the azimuth and positional relationships are based on the azimuth or positional relationships shown in the drawings, it is merely for convenience of describing the present utility model and simplifying the description, and it is not to be construed as limiting the specific scope of protection of the present utility model that the device or element referred to must have a specific azimuth configuration and operation.

It should be noted that the terms "first," "second," and the like in the description and in the claims are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.

One aspect of the present utility model provides an intelligent high voltage ac isolating switch, as shown in fig. 1 and 2, one of which is a preferred embodiment, comprising a switch assembly and a detection device 3. The switch assembly is arranged in the high-voltage alternating current circuit and can conduct or break the high-voltage alternating current circuit. The detection device 3 is arranged on the switch assembly, and the detection device 3 can supply power through a high-voltage alternating current circuit; the detecting device 3 is used for detecting the state of the high-voltage alternating current circuit and the state of the switch assembly, and sending the detected result to the monitoring center in real time. And then maintenance personnel of the electric wire netting can know the running state of high voltage alternating current circuit and switch module in real time in the monitoring center to guarantee when high voltage alternating current circuit and/or switch module break down, maintenance personnel can timely discover and rapidly handle, in order to ensure user's power consumption safety.

It can be understood that the utility model can realize the intelligent electric parameter monitoring of the isolating switch by adding the detection device 3 on the basis of the traditional switch assembly, and can continuously monitor the load power utilization state of the high-voltage alternating current circuit for 24 hours. And data analysis is carried out according to the running state of the high-voltage alternating current circuit and the running state of the switch assembly, so that the running states of the alternating current circuit and the switch assembly are known in real time.

In this embodiment, the number of switch components may be set according to actual needs; generally, the high-voltage ac circuit is a three-phase circuit, and the number of the switch assemblies is three corresponding to the three and is used for respectively conducting or disconnecting the corresponding three-phase circuit. The number of the detecting devices 3 is also three corresponding to each other, and the corresponding switch assemblies are respectively installed.

It should be appreciated that the specific construction of the switch assembly is well known to those skilled in the art. A common switch assembly, as shown in fig. 1, includes a pair of contacts 100 and a contact blade 200; one end of the contact blade 200 is rotatably connected with one of the contacts 100, and the contact blade 200 performs switching on and off of the high-voltage ac circuit by switching on or off the other end of the contact blade with the other contact 100.

In this embodiment, as shown in fig. 1, since the detecting device 3 needs to detect the high-voltage ac circuit and the switch assembly at the same time, the detecting device 3 can be mounted on the contact blade 200 of the switch assembly, so as to facilitate the detection of the detecting device 3.

In one embodiment of the present utility model, as shown in fig. 1 and 2, the detecting device 3 includes a housing 31, a detecting module, and a power supply module 32. Since the high voltage ac circuit needs to be conducted through the contact blade 200 when the contact blade 200 is closed, the housing 31 may be made of an insulating material in order to avoid the influence of the high voltage flowing through the contact blade 200 on the detection module. The detection module and the power supply module 32 are both arranged inside the shell 31, and the power supply module 32 can supply power to the detection module through a high-voltage alternating current circuit. The detection module can detect the state of the high-voltage alternating current circuit and the state of the switch assembly, and sends the detection result to the monitoring center in real time.

It can be understood that the detection module can realize the integrated design of electric parameter monitoring and environmental parameter monitoring and sampling.

In the present embodiment, the detection device 3 is mounted on the touch blade 200 through the housing 31, and the housing 31 and the touch blade 200 are mounted in various manners, including but not limited to the following two manners.

Mode one: the housing 31 has a U-shape, so that the housing 31 can be directly clamped to the contact blade 200.

Mode two: as shown in fig. 1 and 2, the housing 31 is annular and is sleeved on the contact blade 200.

It will be appreciated that, when the above-described manner is adopted, an additional limit structure may be required to further improve the mounting stability of the detection device 3; therefore, the second mode is preferably adopted in this embodiment; and the second mode can also facilitate the power supply of the power supply module 32.

In this embodiment, as shown in fig. 1 and 2, the housing 31 may have a circular ring shape or a rectangular ring shape. Generally, the cross-sectional shape of the contact blade 200 is rectangular, and the housing 31 may preferably be in a rectangular ring shape, so that the contact area between the housing 31 and the contact blade 200 may be increased to improve the mounting stability of the detection device 3.

In this embodiment, the power supply module 32 supplies power to the detection module through the high-voltage ac circuit in a plurality of ways, including but not limited to the following two ways.

Mode one: the bypass module is used for carrying out direct-current voltage reduction on the high-voltage alternating-current circuit and then is communicated with the power supply module 32, and the power supply module 32 can supply power to the detection module.

Mode two: the power supply module 32 supplies power to the detection module by electromagnetic induction of the high-voltage alternating current circuit.

It is understood that the first and second modes are known to those skilled in the art, and are not described in detail herein. In this embodiment, the second mode is preferably adopted, and the passive induction power supply mode is used to supply power, so that the power supply can be operated at regular time even in the case of no current or low current.

It should be appreciated that the intelligent parameter detection of the detection module includes voltage detection, temperature detection, and the like. In this embodiment, as shown in fig. 2, the detection module includes a circuit detection unit, a temperature detection unit 34, and a communication unit 33. The circuit detection unit may detect the state of the high-voltage ac circuit, and the temperature detection unit 34 may detect the temperatures of the contact 100 and the contact blade 200. The communication unit 33 is electrically connected to the circuit detection unit and the temperature detection unit 34, respectively, and the communication unit 33 may send the detection results of the circuit detection unit and the temperature detection unit 34 to the monitoring center in real time.

It is understood that the specific structure and working principle of the temperature detecting unit 34 are known to those skilled in the art, and the common temperature detecting unit 34 may employ a temperature sensor or the like; the temperature measuring mode of the temperature detecting unit 34 is direct contact type, and the temperature rise of the key temperature measuring point is monitored in real time and sent to the communication unit 33. The communication unit 33 can send the temperature rise data of the switch assembly to the monitoring center through wireless remote transmission; therefore, maintenance personnel can know the temperature rise conditions of the contact 100 and the contact blade 200 in real time according to the temperature monitoring result, and the maintenance personnel can conveniently and timely process the temperature rise conditions when abnormal high temperature occurs. Particularly, the temperature rise of the contact 100, avoids burning out the switch assembly due to high temperature. Meanwhile, the temperature rise data of the switch assembly when the temperature is abnormal can also provide effective analysis basis for the subsequent fault analysis.

It will also be appreciated that the specific construction and operation of the communication unit 33 is well known to those skilled in the art; the communication unit 33 and the monitoring center are commonly used in a wireless transmission mode; by collecting unified data and by means of wireless transmission, no electrical connection between the communication unit 33 and the secondary device is possible to ensure the insulation of the detection device 3. The common communication unit 33 is a control chip, and the control chip can record the detection signals of the temperature detection unit 34 and the circuit detection unit and send the detection signals to the monitoring center so as to perform fault analysis through the recorded parameters when faults occur; meanwhile, the control chip can also position the position of the control chip so as to quickly position a fault point when the fault occurs.

In the present embodiment, as shown in fig. 2, the circuit detection unit includes a current detection unit 36; the current detection unit 36 may detect a current flowing through the high voltage ac circuit of the touch blade 200. Therefore, whether the current exists or not can be quantitatively judged according to the data acquired by the current, whether a certain phase of the isolating switch of a specific certain line fails or not is further judged, and whether the voltage is still applied or not can be qualitatively judged.

In the present embodiment, as shown in fig. 2, the circuit detection unit includes a voltage detection unit 35; the voltage detection unit 35 may detect a voltage flowing through the high voltage ac circuit of the touch blade 200. The voltage detecting unit 35 may cooperate with the current detecting unit 36 to detect the electric power flowing through the ac high-voltage circuit of the touch blade 200, and send the detected result to the monitoring center through the communication unit 33, so as to facilitate subsequent parameter analysis.

Another aspect of the present utility model provides a smart grid system, wherein a preferred embodiment includes a plurality of the smart high voltage ac disconnectors described above.

In this embodiment, the smart grid system further includes a monitoring center; the monitoring center can record the positions of the detection devices 3 corresponding to the intelligent high-voltage alternating-current isolating switches, and further when any detection device 3 sends fault signals to the monitoring center, the monitoring center can obtain the specific positions of the failed high-voltage alternating-current circuit and/or the intelligent high-voltage alternating-current isolating switches according to the positions of the detection devices 3, so that maintenance personnel can process faults rapidly and timely.

It can be understood that the communication unit 33 in the intelligent high-voltage ac isolating switch can send its own position information to the monitoring center, so that the monitoring center can record the position of the corresponding intelligent high-voltage ac isolating switch according to the position information sent by the communication unit 33. Therefore, when the voltage detection unit 35, the current detection unit 36 and the temperature detection unit 34 detect that the high-voltage alternating current circuit is faulty or the corresponding switch assembly is abnormal, the communication unit 33 can send an abnormal signal to the monitoring center and give an alarm so as to remind maintenance personnel of timely finding out the fault signal, and then the maintenance personnel can quickly maintain the fault point according to the position information of the communication unit 33 of the recorded abnormal signal.

The foregoing has outlined the basic principles, features, and advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made therein without departing from the spirit and scope of the utility model, which is defined by the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (10)

1. An intelligent high-voltage alternating current isolating switch is characterized by comprising a switch assembly and a detection device; the switch assembly is suitable for conducting or disconnecting a high-voltage alternating current circuit; the detection device is arranged on the switch assembly and is powered by a high-voltage alternating current circuit; the detection device is suitable for detecting the state of the high-voltage alternating current circuit and the state of the switch assembly, and sending the detection result to the monitoring center in real time.

2. The intelligent high voltage ac disconnect as defined in claim 1, wherein: the switch assembly comprises a pair of contacts and a contact knife, and the two contacts are connected or disconnected through the contact knife so as to realize the connection and disconnection of a high-voltage alternating current circuit; the detection device is arranged on the touch knife.

3. The intelligent high voltage ac disconnect as defined in claim 2 wherein: the detection device comprises a shell, a detection module and a power supply module; the shell is made of insulating materials, the detection module and the power supply module are arranged inside the shell, and the power supply module is suitable for supplying power to the detection module through a high-voltage alternating current circuit; the detection module is suitable for detecting the state of the high-voltage alternating current circuit and the state of the switch assembly, and sending the detection result to the monitoring center in real time.

4. The intelligent high voltage ac disconnect switch of claim 3, wherein: the shell is annular and sleeved on the contact knife.

5. The intelligent high voltage ac disconnect as defined in claim 4, wherein: the power supply module is suitable for supplying power to the detection module through electromagnetic induction of the high-voltage alternating current circuit.

6. The intelligent high voltage ac disconnect as defined in any one of claims 3-5 wherein: the detection module comprises a circuit detection unit, a temperature detection unit and a communication unit; the circuit detection unit is suitable for detecting the state of a high-voltage alternating current circuit, and the temperature detection unit is suitable for detecting the temperatures of the contact and the contact knife; the communication unit is suitable for sending the detection results of the circuit detection unit and the temperature detection unit to a monitoring center in real time.

7. The intelligent high voltage ac disconnect as defined in claim 6, wherein: the circuit detection unit comprises a voltage detection unit; the voltage detection unit is suitable for detecting the voltage of the high-voltage alternating current circuit flowing through the contact knife.

8. The intelligent high voltage ac disconnect as defined in claim 6, wherein: the circuit detection unit comprises a current detection unit; the current detection unit is suitable for detecting the current flowing through the high-voltage alternating current circuit of the contact knife.

9. A smart grid system, characterized by: comprising an intelligent high voltage ac disconnector according to any of claims 1-8.

10. The smart grid system of claim 9 wherein: the intelligent power grid system further comprises a monitoring center; the monitoring center is suitable for recording the positions of the detection devices corresponding to the intelligent high-voltage alternating current isolating switches, and further when any detection device sends a fault signal to the monitoring center, the monitoring center is suitable for obtaining the specific positions of the failed high-voltage alternating current circuit and/or the intelligent high-voltage alternating current isolating switches according to the positions of the detection devices.