CN212808481U

CN212808481U - GIL electric arc ultrasonic fault location on-line monitoring device

Info

Publication number: CN212808481U
Application number: CN202021266739.4U
Authority: CN
Inventors: 陈勇; 郝乾; 王永君; 张磊; 熊志云; 吴俊�; 程定河
Original assignee: Landpower Wuhan Co ltd
Current assignee: Landpower Wuhan Co ltd
Priority date: 2020-07-02
Filing date: 2020-07-02
Publication date: 2021-03-26
Anticipated expiration: 2030-07-02

Abstract

The utility model discloses a belong to monitoring devices technical field, specifically be a GIL electric arc supersound fault location on-line monitoring device, including the backstage, the main website network, monitoring unit and acquisition unit, this kind of GIL electric arc supersound fault location on-line monitoring device, can adjust according to the condition and application scale, the monitoring to the arc discharge state volume in the GIL jar body has been realized, analysis and supplementary diagnosis energy supply, acquisition unit can monitor ultrasonic sensor, install behind the GIL shell, through signal cable connection, attenuation and distortion in the signal transmission process have been avoided, the sensitivity and the interference killing feature of monitoring have been guaranteed, adopt advanced, ripe technique and equipment, guarantee on-line monitoring device's safe operation, can not cause any interference to GIL body equipment, can improve the reliability of GIL equipment operation, and provide data support for later maintenance.

Description

GIL electric arc ultrasonic fault location on-line monitoring device

Technical Field

The utility model relates to a monitoring devices technical field specifically is a GIL electric arc supersound fault location on-line monitoring device.

Background

GIL is the english abbreviation of gas insulated metal enclosed transmission line.

GIL is subject to various factors such as electricity, heat, machinery and environment during operation, and undergoes complicated chemical and physical changes inside, resulting in gradual degradation of performance.

The insulation degradation of the GIL causes partial discharge, the penetration breakdown is not caused at the initial stage generally, but the insulation degradation of the GIL is accelerated by the partial discharge, the cumulative effects such as vibration, overheating and the like are caused, further insulation defects are enlarged, insulation breakdown is finally caused, and current leakage occurs, so that the insulation defects which are early in the GIL can be effectively found by performing the partial discharge detection on the GIL, measures can be taken conveniently, the further development of the GIL is avoided, the reliability of the GIL is improved, and the defects of a withstand voltage test can be overcome.

The existing common fault arc positioning collector adopts a peak value measuring technology, namely when an arc fault discharge occurs at a collecting point, the collected ultrasonic signals are processed and then the maximum value of the signals is tracked and maintained, and the fault position is judged according to the difference of the maximum values of different collecting points.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a GIL electric arc supersound fault location on-line monitoring device, general fault arc location collector of current who proposes in solving above-mentioned background art adopts peak value measurement technique, gather the point promptly when arc fault discharges, the ultrasonic signal that will gather handles the maximum value that the trace keeps the signal, according to the different fault location of judging of the maximum value of different gathering points, the limitation of this method is as long as the ultrasonic wave accords with collector filtering passband scope and just probably leads to failure alarm, only gather the maximum value and can't carry out the analysis to the waveform, can also not be according to the problem of time collaborative positioning.

In order to achieve the above object, the utility model provides a following technical scheme: a GIL arc ultrasonic fault positioning online monitoring device comprises a background, a main station network, a monitoring unit and a collecting unit, wherein the output input end of the background is electrically connected with the main station network, the electrical input output end of the main station network is electrically connected with an electric power system, the electrical output end of the electric power system is electrically connected with the monitoring unit, the interior of the monitoring unit is electrically connected with the collecting unit, the interior of the collecting unit is electrically connected with a client and a software system, the electrical output ends of the client and the software system are electrically connected with a wireless network, the electrical output ends of the wireless network are electrically connected with a main sampling unit and an auxiliary sampling unit, the electrical output ends of the main sampling unit and the auxiliary sampling unit are electrically connected with the software system, and the electrical input ends of the main sampling unit and the auxiliary sampling unit are wirelessly connected with a main ultrasonic sensor and an auxiliary ultrasonic, the electric output end of the acquisition unit is electrically connected with a main sensor and an auxiliary sensor.

Preferably, the electrical output end of the master station network is electrically connected with a printing device.

Preferably, the monitoring unit adopts a hierarchical architecture.

Preferably, the main sampling unit and the sub-sampling unit can monitor sixteen partial discharge structures at most.

Preferably, the software system is electrically connected with a data storage module, an intelligent diagnosis module and a display module, and the storage module, the intelligent diagnosis module and the display module are electrically connected in series.

Compared with the prior art, the beneficial effects of the utility model are that: this kind of GIL electric arc supersound fault location on-line monitoring device, through the combination application of accessory, the system adopts hierarchical layered architecture, can adjust according to the condition and applied scale, the monitoring to the arc discharge state quantity in the GIL jar body has been realized, analysis and supplementary diagnosis energy supply, the ultrasonic sensor can be monitored to the acquisition unit, install behind the GIL shell, through signal cable connection, the decay and the distortion in the signal transmission process have been avoided, the sensitivity and the interference killing feature of monitoring have been guaranteed, adopt advanced, ripe technique and equipment, guarantee on-line monitoring device's safe operation, can not cause any interference to GIL body equipment, can improve the reliability of GIL equipment operation, and provide data support for later maintenance, software system includes backstage system software: displaying the amplitude and time of the measured discharge signal, and the sampling unit: high speed, multipoint, synchronous sampling, filtering, capturing discharge characteristics, etc., wherein the ultrasonic sensor can receive arc fault signals.

Drawings

FIG. 1 is a schematic diagram of the system of the present invention;

fig. 2 is a schematic diagram of the substation system structure of the present invention.

In the figure: 100 background, 110 printing equipment, 120 master station network, 121 power system, 200 monitoring unit, 210 acquisition unit, 211 client, 212 software system, 213 wireless network, 214 main sampling unit, 215 main ultrasonic sensor, 216 auxiliary sampling unit, 217 auxiliary ultrasonic sensor, 220 main sensor and 230 auxiliary sensor.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides a GIL electric arc ultrasonic fault location on-line monitoring device, the wave form is convenient for gather in real time, the server side can carry out digital filtering to the wave form, effectively reduces the wrong report, the reliability is strong, please refer to fig. 1-2, including backstage 100, main website network 120, monitoring unit 200 and acquisition unit 210;

referring to fig. 1 again, the electrical output end of the background 100 has a printing device 110, specifically, the electrical output end of the master station network 120 is electrically connected to the printing device 110, the output input end of the background 100 is electrically connected to the master station network 120, and the electrical input end of the master station network 120 is electrically connected to the power system 121;

referring to fig. 1-2 again, an electrical input end of the monitoring unit 200 is electrically connected to the master station network 120, specifically, an electrical output end of the power system 121 is electrically connected to the monitoring unit 200, an interior of the monitoring unit 200 is electrically connected to the acquisition unit 210, an interior of the acquisition unit 210 is electrically connected to the client 211 and the software system 212, electrical output ends of the client 211 and the software system 212 are electrically connected to the wireless network 213, an electrical output end of the wireless network 213 is electrically connected to the main sampling unit 214 and the sub-sampling unit 216, electrical output ends of the main sampling unit 214 and the sub-sampling unit 216 are electrically connected to the software system 212, electrical input ends of the main sampling unit 214 and the sub-sampling unit 216 are wirelessly connected to the main ultrasonic sensor 215 and the sub-ultrasonic sensor 217, and an electrical output end of the acquisition unit 210 is;

when the system is used specifically, the background 100 and the printing device 110 are electrically connected on the master station network 120 to work in a matched mode, the monitoring unit 200 is combined by the power system 121, the combination process of the monitoring unit 200 is increased or decreased according to actual needs and scale, the acquisition unit 210 connected with the main sensor 220 and the auxiliary sensor 230 is arranged inside the monitoring unit 200, the client 211 and the software system 212 which are connected in series through the wireless network 213 are electrically connected inside the acquisition unit 210, the software system 212 is connected with the main sampling unit 214 and the auxiliary sampling unit 216 so as to connect the main ultrasonic sensor 215 and the auxiliary ultrasonic sensor 217, ultrasonic waves are generated when an arc discharge fault occurs inside the GIL, generated ultrasonic signals can be transmitted along the GIL shell and the inside, the transmission speed of the ultrasonic signals on the surface of the GIL shell is high (5000m/s), after the solid of the basin-type insulator is blocked in a small attenuation mode, the signal attenuation is obvious, a plurality of ultrasonic sensing structures are arranged at different positions of the GIL, the ultrasonic signals collected by the sensors are subjected to waveform analysis, the limited propagation speed of ultrasonic waves is different in time difference generated at different collection points, the fault electric arc position location can be tested, the cleanliness of the manufacture and installation of the GIL can be found through the on-line monitoring of local discharge, the defects and the error in the insulation manufacturing process and the installation process can be found, the fault position can be determined, the effective treatment is carried out, and the safe operation of equipment is ensured.

Referring again to fig. 1, in order to adjust to actual requirements, in particular, the monitoring unit 200 adopts a hierarchical architecture.

Referring to fig. 2 again, in order to facilitate the arrangement of a plurality of points and to enable connection with a signal cable, specifically, the main sampling unit 214 and the sub-sampling unit 216 may monitor sixteen partial discharge structures at maximum.

While the invention has been described above with reference to an embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, as long as there is no structural conflict, the various features of the disclosed embodiments of the present invention can be used in any combination with each other, and the description of such combinations is not exhaustive in the present specification only for the sake of brevity and resource conservation. Therefore, it is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims

1. The utility model provides a GIL electric arc supersound fault location on-line monitoring device which characterized in that: including backstage (100), main website network (120), monitoring unit (200) and acquisition unit (210), the output and input end electric connection of backstage (100) main website network (120), the electric input and output end electric connection of main website network (120) has electric power system (121), the electric output end electric connection of electric power system (121) monitoring unit (200), the inside electric connection of monitoring unit (200) has acquisition unit (210), the inside electric connection of acquisition unit (210) has customer end (211) and software system (212), customer end (211) with the electric output end electric connection of software system (212) has wireless network (213), the electric output end electric connection of wireless network (213) has main sampling unit (214) and vice sampling unit (216), main sampling unit (214) with the electric output end electric connection of vice sampling unit (216) software system (212) is the software system (212) of sampling unit (213) ) The electrical input ends of the main sampling unit (214) and the auxiliary sampling unit (216) are wirelessly connected with a main ultrasonic sensor (215) and an auxiliary ultrasonic sensor (217), and the electrical output end of the acquisition unit (210) is electrically connected with a main sensor (220) and an auxiliary sensor (230).

2. The GIL arc ultrasonic fault location online monitoring device of claim 1, wherein: the electrical output end of the master station network (120) is electrically connected with a printing device (110).

3. The GIL arc ultrasonic fault location online monitoring device of claim 1, wherein: the monitoring unit (200) employs a hierarchical architecture.

4. The GIL arc ultrasonic fault location online monitoring device of claim 1, wherein: the main sampling unit (214) and the auxiliary sampling unit (216) can monitor sixteen partial discharge structures at most.

5. The GIL arc ultrasonic fault location online monitoring device of claim 1, wherein: the software system (212) is electrically connected with a data storage module, an intelligent diagnosis module and a display module, and the storage module, the intelligent diagnosis module and the display module are electrically connected in series.