A smart insulator

Abstract

The present invention discloses an intelligent insulator, including a body, wherein a detection mechanism, a signal processing mechanism and a power supply mechanism are arranged in the body, wherein the power supply mechanism is connected to the signal processing mechanism, wherein the signal processing mechanism is connected to the detection mechanism, wherein the detection mechanism includes a capacitor and a high-frequency current sensor, wherein the high-frequency current sensor is connected to the signal processing mechanism, wherein the capacitor is connected to the connection threaded hole at the top of the body through a wire, wherein the capacitor is connected to the energized indication interface through a detection line, wherein the detection line passes through the high-frequency current sensor. An intelligent insulator adopting the above structure can collect the partial discharge pulse current in the switch cabinet without installing a new detection device, and transmit the current to the control panel in the cabinet for alarm or data storage.

Description

Technical Field

[0001] The invention relates to the field of switch cabinet equipment, and in particular to an intelligent insulator. Background Art

[0002] With the massive increase in the number of unmanned substations and transformer substations in the State Grid, and in response to the State Grid Corporation's smart grid planning requirements, the development of smart switchgear has become a hot spot of competition in the industry, and the monitoring of partial discharge pulse current in the switchgear is a very critical part of the smart switchgear. In order to ensure the safe and reliable operation of the high-voltage switchgear, effective measures must be taken to monitor the partial discharge pulse current in real time. Setting a high-frequency current sensor in the actual switch to detect the partial discharge pulse current requires installation and wiring, which increases the difficulty of assembly and is inconvenient to use. Summary of the invention

[0003] The purpose of the present invention is to provide an intelligent insulator, which can collect the partial discharge pulse current in the switch cabinet without installing a new detection device, and transmit it to the control panel in the cabinet for alarm or data storage.

[0004] To achieve the above-mentioned purpose, the present invention provides an intelligent insulator, including a main body, wherein a detection mechanism, a signal processing mechanism and a power supply mechanism are arranged in the main body, the power supply mechanism is connected to the signal processing mechanism, the signal processing mechanism is connected to the detection mechanism, the detection mechanism includes a capacitor and a high-frequency current sensor, the high-frequency current sensor is connected to the signal processing mechanism, the capacitor is connected to the connecting threaded hole at the top of the main body through a wire, the capacitor is connected to the energized indication interface through a detection line, and the detection line passes through the high-frequency current sensor.

[0005] Preferably, the signal processing mechanism includes a signal processing circuit board and a signal transmission circuit board, and the signal transmission circuit board is provided with a controller module, a wireless module and a wired interface module, the wireless module and the wired interface module are both connected to the controller module, and the wired interface module is connected to the signal output interface via a signal line.

[0006] Preferably, an amplification module and a filtering module are provided in the signal processing circuit board, the high-frequency current sensor is connected to the amplification module, the amplification module is connected to the filtering module, and the filtering module is connected to the controller module.

[0007] Preferably, the wired interface module is an RS232 module or an RS485 module.

[0008] Preferably, the power supply mechanism is a capacitor voltage-dividing power supply board.

[0009] Preferably, the signal processing circuit board, the signal transmission circuit board and the capacitor voltage-dividing power supply board are sequentially arranged up and down and are all provided with fixing through holes, and adjacent fixing through holes are fixedly connected by insulating threaded tubes.

[0010] Preferably, the sides of the signal processing circuit board and the capacitor voltage-dividing power supply board are wrapped with protective rings, and the signal processing circuit board and the high-frequency current sensor are fixedly connected via insulating columns.

[0011] Preferably, a protective spring is sleeved on the outer side of the connecting threaded hole, one end of the protective spring is fixed to the bottom of the connecting threaded hole, the other end of the protective spring is fixed to the top of the capacitor, and the wire is arranged inside the protective spring.

[0012] Preferably, a detection wire is fixedly connected to the bottom of the capacitor, the detection wire passes through the high-frequency current sensor and the insulating threaded tube, a connecting threaded column is fixed to the tail end of the detection wire, a reinforcement sleeve is fixed to the charged indication interface, a contact spring is fixed to the bottom of the charged indication interface, and the connecting threaded column is threadedly connected to the reinforcement sleeve and in contact with the contact spring.

[0013] Therefore, the present invention adopts an intelligent insulator with the above structure, which does not need to install a new detection device, and can collect the local discharge pulse current in the switch cabinet, and transmit it to the control panel in the cabinet by wireless or wired means for alarm or data storage; a live indication interface is provided; and power is drawn based on the principle of capacitor voltage division, without the need for an additional power supply, thereby reducing wiring.

[0014] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The figure is a schematic structural diagram of an intelligent insulator according to the present invention.

[0016] 1. Main body; 101. Connecting threaded hole; 2. Detection mechanism; 201. Capacitor; 202. High-frequency current sensor; 203. Detection line; 204. Connecting threaded column; 3. Signal processing mechanism; 301. Signal processing circuit board; 302. Signal transmission circuit board; 4. Power-taking mechanism; 5. Signal output interface; 6. Reinforcement sleeve; 7. Contact spring; 8. Power-on indication interface; 9. Protective ring; 10. Insulating column; 11. Insulating threaded tube; 12. Protective spring. DETAILED DESCRIPTION

[0017] Example

[0018] Figure 1This is a structural schematic diagram of an intelligent insulator of the present invention. As shown in the figure, the intelligent insulator includes a body 1, in which a detection mechanism 2, a signal processing mechanism 3 and a power extraction mechanism 4 are arranged.

[0019] The power-taking mechanism 4 of this embodiment adopts a capacitor voltage-dividing power supply board, and no power line or battery is required, which reduces wiring. The power-taking mechanism 4 is connected to the signal processing mechanism 3, and the signal processing mechanism 3 is connected to the detection mechanism 2. The detection mechanism 2 includes a capacitor 201 and a high-frequency current sensor 202. The high-frequency current sensor 202 is connected to the signal processing mechanism 3. The capacitor 201 is connected to the connecting threaded hole 101 at the top of the body 1 through a wire. A protective spring 12 is sleeved on the outside of the connecting threaded hole 101. One end of the protective spring 12 is fixed to the bottom of the connecting threaded hole 101, and the other end of the protective spring 12 is fixed to the top of the capacitor 201. The wire is set inside the protective spring 12, and the length of the wire is greater than the length of the protective spring 12 in the natural state, so that the position of the capacitor 201 is maintained at a certain position during casting. The capacitor 201 is connected to the charged indication interface 8 through the detection line 203 for connecting the charged indication device. The detection line 203 passes through the high-frequency current sensor 202 for detecting partial discharge pulse current.

[0020] The detection signal of the high-frequency current sensor 202 is transmitted to the signal processing mechanism 3, and the signal processing mechanism 3 includes a signal processing circuit board 301 and a signal transmission circuit board 302. An amplification module and a filtering module are arranged in the signal processing circuit board 302, and the high-frequency current sensor 202 is connected to the amplification module, and the amplification module is connected to the filtering module. The amplification module and the filtering module are conventionally arranged modules in the prior art, and are not repeated here. The filtering module is connected to the signal transmission circuit board 302, and a controller module, a wireless module and a wired interface module are arranged in the signal transmission circuit board 302. The wireless module and the wired interface module are both connected to the controller module. The wireless module can adopt a serial port Wi-Fi module or a Bluetooth module, which can be selected according to the supporting settings. The wired interface module is connected to the signal output interface 5 through a signal line, and the wired interface module adopts an RS232 module or an RS485 module. Two data transmission modes are used for data output, which is convenient for users to select the transmission mode according to actual conditions. It should be noted that the circuit modules used above are all commonly used modules in the prior art, and the specific models and structures are not limited here. Replacing the modules with the same functions on this basis is an equivalent replacement and falls within the scope of protection of this application.

[0021] The signal processing circuit board 301, the signal transmission circuit board 302 and the capacitor voltage-dividing power supply board are sequentially arranged up and down and are all provided with fixed through holes. The adjacent fixed through holes are fixedly connected by the insulating threaded tube 11, so that the relative position of each circuit board is fixed to avoid excessive displacement of the circuit board during the casting process. The sides of the signal processing circuit board 301 and the capacitor voltage-dividing power supply board are wrapped with a protective ring 9, and the signal processing circuit board 301 is fixedly connected to the high-frequency current sensor 202 by the insulating column 10, so that the relative position of the detection mechanism 2 and the signal processing mechanism 3 is fixed. The bottom of the capacitor 201 is fixedly connected with a detection line 203, the detection line 203 passes through the high-frequency current sensor 202 and the insulating threaded tube 11, the tail end of the detection line 203 is fixed with a connecting threaded column 204, the charged indication interface 8 is fixed with a reinforcement sleeve 6, and the bottom of the charged indication interface 8 is fixed with a contact spring 7, the connecting threaded column 204 is threadedly connected to the reinforcement sleeve 6 and contacts the contact spring 7, and ensures that the detection line 203 is in reliable contact with the charged indication interface 8.

[0022] Therefore, the present invention adopts an intelligent insulator with the above structure, which does not need to install a new detection device, and can collect the local discharge pulse current in the switch cabinet, and transmit it to the control panel in the cabinet by wireless or wired means for alarm or data storage; a live indication interface is provided; and power is drawn based on the principle of capacitor voltage division, without the need for an additional power supply, thereby reducing wiring.

[0023] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solution of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the present invention.

Claims

1. An intelligent insulator, comprising a body, Features: The body is provided with a detection mechanism, a signal processing mechanism and a power supply mechanism, the power supply mechanism is a capacitor voltage-dividing power supply board, the power supply mechanism is connected to the signal processing mechanism, the signal processing mechanism is connected to the detection mechanism, the detection mechanism includes a capacitor and a high-frequency current sensor, the high-frequency current sensor is connected to the signal processing mechanism, the capacitor is connected to the connecting threaded hole at the top of the body through a wire, the capacitor is connected to the charged indication interface through a detection line, and the detection line passes through the high-frequency current sensor; The signal processing mechanism includes a signal processing circuit board and a signal transmission circuit board, wherein a controller module, a wireless module and a wired interface module are arranged in the signal transmission circuit board, wherein the wireless module and the wired interface module are both connected to the controller module, and the wired interface module is connected to the signal output interface via a signal line; The signal processing circuit board, the signal transmission circuit board and the capacitor voltage-dividing power supply board are sequentially arranged up and down and are all provided with fixing through holes, and adjacent fixing through holes are fixedly connected by insulating threaded tubes; The sides of the signal processing circuit board and the capacitor voltage-dividing power supply board are wrapped with protective rings, and the signal processing circuit board is fixedly connected to the high-frequency current sensor through an insulating column; A protective spring is sleeved on the outer side of the connecting threaded hole, one end of the protective spring is fixed to the bottom of the connecting threaded hole, the other end of the protective spring is fixed to the top of the capacitor, and the wire is arranged inside the protective spring; A detection line is fixedly connected to the bottom of the capacitor, and the detection line passes through a high-frequency current sensor and an insulating threaded tube. A connecting thread column is fixed to the tail end of the detection line, and a reinforcement sleeve is fixed to the charged indication interface. A contact spring is fixed to the bottom of the charged indication interface, and the connecting thread column is threadedly connected to the reinforcement sleeve and contacts the contact spring.

2. The smart insulator according to claim 1, Features: An amplifying module and a filtering module are arranged in the signal processing circuit board, the high-frequency current sensor is connected to the amplifying module, the amplifying module is connected to the filtering module, and the filtering module is connected to the controller module.

3. The smart insulator according to claim 2, Features: The wired interface module is a RS232 module or an RS485 module.

Images