CN218995540U - GIS internal defect on-line monitoring system based on isolating switch operation state - Google Patents
GIS internal defect on-line monitoring system based on isolating switch operation state Download PDFInfo
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- CN218995540U CN218995540U CN202223216410.9U CN202223216410U CN218995540U CN 218995540 U CN218995540 U CN 218995540U CN 202223216410 U CN202223216410 U CN 202223216410U CN 218995540 U CN218995540 U CN 218995540U
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- 230000007547 defect Effects 0.000 title claims abstract description 29
- 238000012544 monitoring process Methods 0.000 title claims abstract description 15
- 230000003287 optical effect Effects 0.000 claims description 15
- 238000005070 sampling Methods 0.000 claims description 14
- 238000006243 chemical reaction Methods 0.000 claims description 11
- 238000012545 processing Methods 0.000 claims description 11
- 238000001514 detection method Methods 0.000 abstract description 6
- 208000028659 discharge Diseases 0.000 description 17
- 230000035945 sensitivity Effects 0.000 description 3
- 230000005236 sound signal Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
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- 238000011161 development Methods 0.000 description 1
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Abstract
The utility model belongs to the field of GIS/GIL internal defect detection, and discloses a GIS internal defect online monitoring system based on an operation state of an isolating switch.
Description
Technical Field
The utility model belongs to the field of GIS/GIL internal defect detection, and particularly relates to a GIS internal defect online monitoring system based on an operation state of an isolating switch.
Background
Operation experience shows that the occurrence of insulation faults in GIS equipment all presents burstiness, namely, a detectable signal is very weak before penetrating discharge occurs, the detection and early warning before the discharge faults are difficult, and the main reasons of the phenomenon are as follows: the discharge of defects in SF6 gas insulation equipment such as GIS at power frequency voltage is characterized by 0-1, namely, before penetrating discharge, partial discharge and other signals induced by the defects are extremely weak, when the partial discharge is close to breakdown, the partial discharge strength is suddenly increased and rapidly developed to breakdown, and the defect discharge development rule shows a step shape.
Besides the characteristic that SF6 discharge is 0-1, the strong interference of background signals of an operation environment and the high-cost large-scale signal acquisition and quick storage technology limit the technology of large-scale and high-resolution defect partial discharge signal acquisition of a common GIS defect detection system in long-term operation, so that the existing detection system lacks effective excavation and analysis of a large amount of important data, the difficulty of GIS sudden fault early warning in the existing stage is caused, and the safe and reliable operation of a power system is seriously affected.
Disclosure of Invention
The utility model aims to overcome the defects and provide the GIS internal defect on-line monitoring system based on the operation state of the isolating switch, so that the failure rate of GIS equipment is reduced, and the operation safety and reliability of the power system are improved.
In order to achieve the above object, the present utility model comprises:
the GIS equipment is connected with the ultrasonic sensor, the pulse current sensor and the optical sensor, the ultrasonic sensor, the pulse current sensor and the optical sensor are all connected with the signal acquisition device, the signal acquisition device is connected with the signal conversion processing device, and the signal conversion processing device is connected with the upper computer;
and the acquisition device control module is connected with the GIS equipment and the signal acquisition device.
The ultrasonic sensor is fixed on the outer surface of the shell of the GIS equipment.
The pulse current sensor and the optical sensor are both arranged in the GIS equipment air chamber.
The ultrasonic sensor is a piezoelectric sensor.
The pulse current sensor is a current transformer.
The signal acquisition device is a high-speed data acquisition card.
Parameters of the high-speed data acquisition card include sampling rate and sampling time.
The optical sensor adopts a built-in light guide structure sensor.
The signal conversion processing device comprises an analog-to-digital converter, a filter and an amplifier, wherein the analog-to-digital converter is connected with the signal acquisition device and the filter, the filter is connected with the amplifier, and the amplifier is connected with the upper computer.
The upper computer adopts a digital signal processor.
Compared with the prior art, the multi-source physical signal combined detection device formed by the ultrasonic sensor, the pulse current sensor and the optical sensor can detect the internal defects of GIS equipment very comprehensively, effectively and reliably, can be associated with the operation state of the isolating switch, and can collect signals with large scale and high resolution when the defects are subjected to strong partial discharge after the isolating switch is operated.
Drawings
FIG. 1 is a system diagram of the present utility model;
1, GIS equipment; 2. an ultrasonic sensor; 3. a pulse current sensor; 4. an optical sensor; 5. a signal acquisition device; 6. a collection device control module; 7. a signal conversion processing device; 8. and an upper computer.
Detailed Description
The preferred embodiments of the present utility model will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making clear and defining the scope of the present utility model.
Referring to fig. 1, the utility model comprises a GIS device 1, wherein the GIS device 1 is connected with an ultrasonic sensor 1, a pulse current sensor 3 and an optical sensor 4, the ultrasonic sensor 1, the pulse current sensor 3 and the optical sensor 4 are all connected with a signal acquisition device 5, the signal acquisition device 5 is connected with a signal conversion processing device 7, and the signal conversion processing device 7 is connected with an upper computer 8;
the acquisition device control module 6, the acquisition device control module 6 connects GIS equipment 1 and the signal acquisition device 5.
The ultrasonic sensor 1 is fixed on the outer surface of the housing of the GIS equipment 1.
The pulse current sensor 3 and the optical sensor 4 are both arranged in the air chamber of the GIS equipment 1, such as a ferromagnetic coil, and can be arranged on the ground line of different parts of the GIS equipment according to measurement requirements, and the sensitivity and the measuring range of the pulse current sensor can be selected according to the characteristics of partial discharge signals of different parts and different types of defects of the GIS equipment, including the frequency, the amplitude and the like of the partial discharge signals.
The ultrasonic sensor 2 is a piezoelectric sensor, and the sensitivity and the measuring range can be selected according to the characteristics of partial discharge signals of different parts and different types of defects of the GIS, including the frequency, the amplitude and the like of the partial discharge signals.
The pulse current sensor 3 is a current transformer.
The signal acquisition device 5 is a high-speed data acquisition card, and parameters of the high-speed data acquisition card comprise sampling rate and sampling time, and the sampling frequency and the sampling time of the acquisition card are determined by the operation state of the isolating switch of the GIS equipment 1, namely: when the isolating switch is not operated, each signal acquisition device selects a low sampling rate; immediately before the isolating switch is operated, each signal acquisition device selects a high sampling rate.
The optical sensor 4 adopts a built-in light guide structure sensor, such as an electro-optical crystal, and is fixed on the inner wall of a housing at different positions of the GIS through a flange, and the sensitivity and the measuring range of the sensor can be selected according to the characteristics of partial discharge signals of different positions and different types of defects of the GIS, including the frequency, the amplitude and the like of the partial discharge signals.
The signal conversion processing device 7 comprises an analog-to-digital converter, a filter and an amplifier, wherein the analog-to-digital converter is connected with the signal acquisition device 5 and the filter, the filter is connected with the amplifier, and the amplifier is connected with the upper computer 8. The signal conversion processing device 7 preprocesses the received signal and outputs a signal required by the host computer 8.
The upper computer 8 adopts a digital signal processor, for example, an industrial computer, and a professional GIS internal defect on-line monitoring program is installed in the computer, so that the collected signals can be processed, analyzed, stored and the like in real time.
When a breaker in the GIS equipment 1 does not act, the ultrasonic sensor 1, the pulse current sensor 3 and the optical sensor 4 continuously collect sound signals of key parts in the GIS equipment 1, wherein the sound signals comprise the breaker, a disconnecting switch and a bus, the sound signals are sent to the signal collecting device 5, and the signal collecting device 5 adopts a low sampling rate, a sampling time and the like in a low-performance working mode; before the isolating switch is about to operate, an isolating switch operation trigger signal is sent to the acquisition device control module 6, and the acquisition device control module 6 controls the signal acquisition device 5 to increase the sampling rate and the sampling time to capture the characteristic signals before and after the isolating switch operation until the effective signals disappear. Because the decay rate of the VFTO is extremely high, a trigger signal needs to be sent out in a period of time before the isolating switch is operated so as to excite the signal acquisition device, and the influence of the delay effect of the trigger signal on signal acquisition is reduced.
Finally, it should be noted that: the described embodiments are intended to be illustrative of only some, but not all, of the embodiments of the present utility model and, based on the embodiments herein, all other embodiments that may be made by those skilled in the art without the benefit of the present disclosure are intended to be within the scope of the present utility model.
While certain exemplary embodiments of the present utility model have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the utility model, which is defined by the appended claims.
Claims (10)
1. GIS internal defect on-line monitoring system based on isolator operating condition, its characterized in that includes:
the GIS equipment (1), the ultrasonic sensor (2), the pulse current sensor (3) and the optical sensor (4) are connected to the GIS equipment (1), the signal acquisition device (5) is connected to the ultrasonic sensor (2), the pulse current sensor (3) and the optical sensor (4), the signal acquisition device (5) is connected to the signal conversion processing device (7), and the signal conversion processing device (7) is connected to the upper computer (8);
the acquisition device control module (6), the acquisition device control module (6) is connected with the GIS equipment (1) and the signal acquisition device (5).
2. The on-line monitoring system for internal defects of a GIS based on the operation state of a disconnecting switch according to claim 1, wherein the ultrasonic sensor (2) is fixed on the outer surface of the housing of the GIS device (1).
3. The on-line monitoring system for internal defects of a GIS based on the operation state of an isolating switch according to claim 1, wherein the pulse current sensor (3) and the optical sensor (4) are both arranged in the gas chamber of the GIS device (1).
4. The on-line monitoring system for internal defects of a GIS based on the operating state of an isolating switch according to claim 1, wherein the ultrasonic sensor (2) is a piezoelectric sensor.
5. The on-line monitoring system for internal defects of a GIS based on the operating state of an isolating switch according to claim 1, wherein the pulse current sensor (3) is a current transformer.
6. The on-line monitoring system for internal defects of a GIS based on the operation state of a disconnecting switch according to claim 1, wherein the signal acquisition device (5) is a high-speed data acquisition card.
7. The on-line monitoring system for GIS internal defects based on the operating state of a disconnector of claim 6, wherein the parameters of the high-speed data acquisition card include sampling rate and sampling time.
8. The on-line monitoring system for internal defects of a GIS based on the operating state of an isolating switch according to claim 1, wherein the optical sensor (4) is a built-in photoconductive structure sensor.
9. The GIS internal defect online monitoring system based on the operation state of the isolating switch according to claim 1, wherein the signal conversion processing device (7) comprises an analog-to-digital converter, a filter and an amplifier, the analog-to-digital converter is connected with the signal acquisition device (5) and the filter, the filter is connected with the amplifier, and the amplifier is connected with the upper computer (8).
10. The on-line monitoring system for internal defects of GIS based on operation state of isolating switch according to claim 1, wherein the upper computer (8) adopts a digital signal processor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223216410.9U CN218995540U (en) | 2022-11-30 | 2022-11-30 | GIS internal defect on-line monitoring system based on isolating switch operation state |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223216410.9U CN218995540U (en) | 2022-11-30 | 2022-11-30 | GIS internal defect on-line monitoring system based on isolating switch operation state |
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| Publication Number | Publication Date |
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| CN218995540U true CN218995540U (en) | 2023-05-09 |
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| CN202223216410.9U Active CN218995540U (en) | 2022-11-30 | 2022-11-30 | GIS internal defect on-line monitoring system based on isolating switch operation state |
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2022
- 2022-11-30 CN CN202223216410.9U patent/CN218995540U/en active Active
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