CN217931898U - Denoising and positioning device in partial discharge detection - Google Patents

Abstract

The utility model discloses a remove noise and positioner in partial discharge detection, including the monitoring host computer and respectively with monitoring host computer electric connection's first ultrasonic wave monitoring sensor, second ultrasonic wave monitoring sensor, third ultrasonic wave monitoring sensor still including being used for respectively fixedly first ultrasonic wave monitoring sensor, second ultrasonic wave monitoring sensor, third ultrasonic wave monitoring sensor's sensor fixing device, the utility model discloses a first ultrasonic wave monitoring sensor, second ultrasonic wave monitoring sensor, the three ultrasonic wave monitoring sensor cooperation of third ultrasonic wave monitoring sensor can be with the three direction of the cubical switchboard that three ultrasonic wave monitoring sensor set up respectively, through the ultrasonic positioning principle location partial discharge position, it is more convenient to fix a position, through setting up the fixed ultrasonic wave sensor of aspiration pump and sucking disc cooperation, it is more convenient to install and dismantle, does not retrain the cubical switchboard material, only need the surfacing can, fixed more firm.

Description

Denoising and positioning device in partial discharge detection

[ technical field ] A method for producing a semiconductor device

The utility model relates to a technical field of partial discharge, especially the technical field who makes an uproar and positioner in the partial discharge detects.

[ background of the invention ]

The switch cabinet is one of the most important and most complex equipment in a power system, has important influence on the operation of the whole system, and is difficult to avoid generating insulation degradation phenomenon in the operation process, the insulation degradation can cause partial discharge, if the insulation degradation is left to develop, the insulation can be seriously damaged, even dielectric property is lost, and the burning loss and explosion accident of a plurality of switch cabinets are caused by the process. Because the cubical switchboard is numerous, the distribution is extensive, only a small part installs on-line monitoring system, to the cubical switchboard of the overwhelming majority, all overhauls under the power failure state, but the power failure overhauls time interval long, difficult in time discovers partial discharge fault. In the daily operation process, the operation and maintenance personnel can also use the partial discharge detection equipment to detect partial discharge signals outside the switch cabinet, and because the detection sensitivity and the accuracy are not enough, and a detection period exists, the partial discharge fault is difficult to find in time. If the partial discharge characteristic of the electrical equipment in the accident latency can be monitored in real time, whether partial discharge and discharge types occur or not is automatically judged, a discharge point is positioned and processed in time, the high-voltage switch cabinet electrical equipment can be effectively prevented from being broken down, and the accident can be prevented in the bud.

There have been a lot of researches on the mechanism, phenomenon and detection method of partial discharge at home and abroad. The existing methods for detecting the partial discharge of the switch cabinet mainly include an ultrasonic method, a transient-state ground voltage method, a pulse current method, an ultrahigh frequency method and the like based on the phenomena of sound, light, electricity, magnetism, generation of chemical substances and the like accompanying the occurrence of the partial discharge. In the aspect of post-data processing, the problems of identification and classification of partial discharge are studied, and are mainly divided into a traditional pattern identification method and a machine learning method, and in recent years, a deep learning technology is rapidly developed, and is applied to solving the problem of fault prediction. However, the pulse current method has strong anti-interference capability due to the direct access of the pulse current method to a high-voltage end, but has certain influence on a high-voltage line; the problems that the design of a sensor is complex and difficult due to high frequency, the impedance matching design difficulty of a subsequent circuit is high, the measured partial discharge signal cannot quantify the apparent discharge amount, the size of the sensor is overlarge and the like are solved; the transient voltage-to-ground voltage method is widely applicable and simple in measurement, but the problems of low measurement precision, inaccurate measurement discharge times and the like are caused by multiple refractions and reflections of high-frequency electromagnetic waves in a switch cabinet. The ultrasonic positioning method has a simple principle, can directly utilize the time delay of each ultrasonic signal for positioning, is simple in calculation and convenient to master, can directly realize space positioning, and is easy to realize online detection. However, the ultrasonic positioning method has the problems that the ultrasonic sensors need to be fixed in multiple directions of the switch cabinet, the existing ultrasonic positioning method is mainly characterized in that the ultrasonic sensors are fixed through magnetic attraction or punching, the magnetic attraction is not suitable for the switch cabinet made of non-magnetic adsorption materials, and the punching damages the switch cabinet.

[ Utility model ] content

The utility model discloses a solve the problem among the prior art, provide one kind and denoise and positioner among the partial discharge detection, can the partial discharge location more accurate, ultrasonic monitoring sensor is fixed more convenient.

For the purpose of realizing the above-mentioned, the utility model provides a remove noise and positioner in partial discharge detection, including the monitoring host computer and respectively with monitoring host computer electric connection's first ultrasonic wave monitoring sensor, second ultrasonic wave monitoring sensor, third ultrasonic wave monitoring sensor, still including being used for fixing respectively first ultrasonic wave monitoring sensor, second ultrasonic wave monitoring sensor, third ultrasonic wave monitoring sensor's sensor fixing device, sensor fixing device includes fixed casing, first ultrasonic wave monitoring sensor, second ultrasonic wave monitoring sensor, third ultrasonic wave monitoring sensor locate respectively fixed casing is internal and the orientation fixed casing one side sets up, be equipped with on the fixed casing with the sucking disc that first ultrasonic wave monitoring sensor, second ultrasonic wave monitoring sensor, third ultrasonic wave monitoring sensor homonymy set up, be equipped with the exhaust tube rather than inside intercommunication on the sucking disc, keep away from on the exhaust tube the one end of sucking disc is equipped with the aspiration pump rather than the intercommunication.

Preferably, the exhaust tube penetrates through the fixed shell, a three-way joint is arranged at one end, far away from the sucker, of the exhaust tube, three ends of the three-way joint are respectively communicated with the exhaust tube, the exhaust pump and the pressure sensor, and the pressure sensor is in control connection with the exhaust pump.

Preferably, each fixed shell is provided with a power connection wire electrically connected with the monitoring host, and one end of each power connection wire is electrically connected with the first ultrasonic monitoring sensor, the second ultrasonic monitoring sensor, the third ultrasonic monitoring sensor and the air suction pump respectively.

Preferably, the electric wire is provided with an ultrasonic signal filter amplifier matched with the first ultrasonic monitoring sensor, the second ultrasonic monitoring sensor and the third ultrasonic monitoring sensor.

Preferably, the monitoring host is internally provided with a wireless communication module, and the wireless communication module is a WIFI module or a GPRS module.

The utility model relates to a go to make an uproar and positioner's beneficial effect among partial discharge detection: the utility model discloses a first ultrasonic wave monitoring sensor, second ultrasonic wave monitoring sensor, the three ultrasonic wave monitoring sensor cooperation of third ultrasonic wave monitoring sensor, can be with the three direction of the cubical switchboard that three ultrasonic wave monitoring sensor set up respectively, through supersound location principle location partial discharge position, it is more convenient to fix a position, through setting up aspiration pump and the fixed ultrasonic sensor of sucking disc cooperation, it is more convenient to install and dismantle, does not receive the cubical switchboard material restraint, only need the surfacing can, fixed more firm.

The features and advantages of the present invention will be described in detail by embodiments with reference to the accompanying drawings.

[ description of the drawings ]

Fig. 1 is the utility model relates to a remove noise and positioner's schematic structure diagram in partial discharge detects.

Fig. 2 is a schematic structural view of the sensor fixing device of the denoising and positioning device in partial discharge detection according to the present invention.

[ detailed description ] embodiments

In order to make the objects, technical solutions and advantages of the present invention more clear, the present invention is further described in detail through the accompanying drawings and embodiments. It should be understood, however, that the description herein of specific embodiments is only intended to illustrate the invention and not to limit the scope of the invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

In the description of the present invention, it should be noted that when an element is referred to as being "fixed" or "disposed" to another element, it can be directly on the other element or be indirectly connected to the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

In the description of the present invention, it should be noted that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and the description is only for convenience of description and simplification, but the indication or suggestion that the device or element to which the description refers must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise. The meaning of "a number" is one or more unless specifically limited otherwise.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The first embodiment is as follows:

referring to fig. 1 and 2, the utility model relates to a remove noise and positioner in partial discharge detection, including monitoring host computer 1 and respectively with monitoring host computer 1 electric connection's first ultrasonic monitoring sensor 2, second ultrasonic monitoring sensor 3, third ultrasonic monitoring sensor 4, still including being used for fixing respectively first ultrasonic monitoring sensor 2, second ultrasonic monitoring sensor 3, third ultrasonic monitoring sensor 4's sensor fixing device, sensor fixing device includes fixed casing 5, first ultrasonic monitoring sensor 2, second ultrasonic monitoring sensor 3, third ultrasonic monitoring sensor 4 locate respectively in the fixed casing 5 and the orientation fixed casing 5 one side sets up, be equipped with on the fixed casing 5 with the sucking disc 6 that first ultrasonic monitoring sensor 2, second ultrasonic monitoring sensor 3, third ultrasonic monitoring sensor 4 homonymy set up, be equipped with the exhaust tube 61 rather than inside intercommunication on the sucking disc 6, keep away from on the exhaust tube 61 the one end of sucking disc 6 is equipped with the pump 7 rather than the intercommunication. Through first ultrasonic monitoring sensor 2, second ultrasonic monitoring sensor 3, the cooperation of the three ultrasonic monitoring sensor of third ultrasonic monitoring sensor 4 in this embodiment, can be with the three direction of the cubical switchboard that three ultrasonic monitoring sensor set up respectively, through supersound location principle location partial discharge position, it is more convenient to fix a position, through setting up aspiration pump 7 and the fixed ultrasonic sensor of 6 cooperations of sucking disc, it is more convenient to install and dismantle, do not receive the cubical switchboard material restraint, only need the surfacing can, it is fixed more firm.

Referring to fig. 1 and 2, an air suction pipe 61 penetrates through the fixed housing 5, a three-way joint 8 is arranged at one end of the air suction pipe 61, which is far away from the suction cup 6, three ends of the three-way joint 8 are respectively communicated with the air suction pipe 61, the air suction pump 7 and a pressure sensor 9, and the pressure sensor 9 is in control connection with the air suction pump 7. The pressure sensor 9 is used for monitoring the pressure of the sucker 6, and when the pressure is too low, the air pump 7 can be driven to automatically start air pumping until the pressure reaches the pressure standard.

Referring to fig. 1 and 2, each of the fixed housings 5 is provided with an electric wire 10 electrically connected to the monitoring host 1, and one end of the electric wire 10 is electrically connected to the first ultrasonic monitoring sensor 2, the second ultrasonic monitoring sensor 3, the third ultrasonic monitoring sensor 4, and the air pump 7, respectively.

Referring to fig. 1 and 2, an ultrasonic signal filter amplifier 11 adapted to the first ultrasonic monitoring sensor 2, the second ultrasonic monitoring sensor 3 and the third ultrasonic monitoring sensor 4 is disposed on the power connection line 10. The monitoring precision is improved.

Referring to fig. 1 and 2, a wireless communication module is arranged in the monitoring host 1, and the wireless communication module is a WIFI module or a GPRS module.

The utility model discloses the working process:

the utility model relates to a remove noise and positioner in partial discharge detection in the course of the work, respectively with first ultrasonic wave monitoring sensor 2, second ultrasonic wave monitoring sensor 3, third ultrasonic wave monitoring sensor 4 places the three suitable position at the cubical switchboard, and make 6 laminating cubical switchboard surfaces of sucking disc, control aspiration pump 7 is opened, through first ultrasonic wave monitoring sensor 2, second ultrasonic wave monitoring sensor 3, the cooperation of the three ultrasonic wave monitoring sensor of third ultrasonic wave monitoring sensor 4, can be with the three direction of the cubical switchboard that three ultrasonic wave monitoring sensor set up respectively, fix a position the partial discharge position through the supersound positioning principle, it is more convenient to fix a position, through setting up aspiration pump 7 and the fixed ultrasonic sensor of 6 cooperations of sucking disc, the installation is dismantled more conveniently, do not receive the cubical switchboard material restraint, only need the surfacing can, it is more firm to fix.

The above-mentioned embodiment is right the utility model discloses an explanation, it is not right the utility model discloses a limited, any is right the utility model discloses scheme after simply changing all belongs to the protection scope of the utility model.

Claims (5)

1. The utility model provides a remove noise and positioner in partial discharge detection, including monitoring host computer (1) and respectively with monitoring host computer (1) electric connection's first ultrasonic monitoring sensor (2), second ultrasonic monitoring sensor (3), third ultrasonic monitoring sensor (4), its characterized in that: still including being used for fixing respectively the sensor fixing device of first ultrasonic wave monitoring sensor (2), second ultrasonic wave monitoring sensor (3), third ultrasonic wave monitoring sensor (4), sensor fixing device is including fixed casing (5), first ultrasonic wave monitoring sensor (2), second ultrasonic wave monitoring sensor (3), third ultrasonic wave monitoring sensor (4) are located respectively fixed casing (5) interior and orientation fixed casing (5) one side sets up, be equipped with on fixed casing (5) with sucking disc (6) that first ultrasonic wave monitoring sensor (2), second ultrasonic wave monitoring sensor (3), third ultrasonic wave monitoring sensor (4) homonymy set up, be equipped with exhaust tube (61) rather than inside intercommunication on sucking disc (6), keep away from on exhaust tube (61) the one end of sucking disc (6) is equipped with aspiration pump (7) rather than the intercommunication.

2. The device for removing noise and locating in partial discharge detection as claimed in claim 1, wherein: the suction pipe (61) penetrates through the fixed shell (5) and is arranged at one end, far away from the sucker (6), of the suction pipe (61) and is provided with a three-way joint (8), the three ends of the three-way joint (8) are respectively communicated with the suction pipe (61), the suction pump (7) and a pressure sensor (9), and the pressure sensor (9) is in control connection with the suction pump (7).

3. The device for removing noise and locating in partial discharge detection as claimed in claim 1, wherein: each fixed shell (5) is provided with a power connection wire (10) electrically connected with the monitoring host (1), and one end of the power connection wire (10) is electrically connected with the first ultrasonic monitoring sensor (2), the second ultrasonic monitoring sensor (3), the third ultrasonic monitoring sensor (4) and the air suction pump (7) respectively.

4. The device for removing noise and locating in partial discharge detection as claimed in claim 3, wherein: and an ultrasonic signal filter amplifier (11) matched with the first ultrasonic monitoring sensor (2), the second ultrasonic monitoring sensor (3) and the third ultrasonic monitoring sensor (4) is arranged on the connecting wire (10).

5. The device for removing noise and locating in partial discharge detection as claimed in claim 1, wherein: the monitoring host (1) is internally provided with a wireless communication module which is a WIFI module or a GPRS module.

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