CN217901892U

CN217901892U - Power loss sensor

Info

Publication number: CN217901892U
Application number: CN202222151824.1U
Authority: CN
Inventors: 赵越; 杨川; 秦晓霞; 汪波; 徐力; 夏诗羽; 郑颖春; 邵开霞; 韩旭雯
Original assignee: Yangzhou Power Supply Branch Of State Grid Jiangsu Electric Power Co ltd
Current assignee: Yangzhou Power Supply Branch Of State Grid Jiangsu Electric Power Co ltd
Priority date: 2022-08-16
Filing date: 2022-08-16
Publication date: 2022-11-25
Anticipated expiration: 2032-08-16

Abstract

The power loss sensor comprises a shell and a detection assembly; the detection assembly comprises an induction probe, an electric field sensor, a filter amplifier, a single chip microcomputer, a power supply, a wireless transmitter and a magnetic field sensor, wherein the induction probe is arranged on the outer wall of the shell and is electrically connected with the electric field sensor; the magnetic field sensor is arranged in the shell and electrically connected with the single chip microcomputer and the power supply. The utility model adopts the electric field detection principle, and accurately judges whether the detected conductor is electrified or not by measuring the intensity of the radiation electric field and the electric field frequency; the size is small, power failure operation is not needed, and meanwhile, the installation mechanism capable of adjusting the height and the angle is arranged, so that the installation is convenient, and the flexible arrangement is realized.

Description

Power loss sensor

Technical Field

The utility model belongs to the technical field of the circuit check out test set, concretely relates to power supply line loses the improvement of electric check out test set.

Background

With the development of economic society, the requirements on the quality of life are improved, the requirements of users on power supply reliability and personalized power supply service are higher and higher, a power distribution network is used as a hub for connecting a power station and customers, and the power utilization perception of the users is directly influenced by the operation quality and abnormal conditions of the power distribution network. Therefore, it is necessary to monitor the user side abnormality in real time and grasp the actual power consumption perception and the influence of power loss of the corresponding power user, so as to optimize the implementation mode adjustment and the abnormality handling according to the user demand.

The existing detection technology for detecting whether a power supply line on a user side is electrified has two types:

(1) By using a voltage sampling method, an alternating voltage signal needs to be led out, whether the alternating voltage signal is electrified or not is directly measured through equipment, and a high-low voltage isolation circuit needs to be added; when the scheme is installed, a user side needs to be powered off to operate, line connection is added in an original line, the selectable range of signal sampling points is limited, and installation is inconvenient; and a branch line is added, and the electricity stealing risk is also generated.

(2) And current on the line is collected through the current transformer, and whether electricity exists is judged. The scheme needs to add a current transformer which is clamped on a line to be tested, and the transformer can be only clamped on a single-stranded wire due to the adoption of the electromagnetic induction principle, so that the sheath of the wire can be damaged during installation, and two strands of cables are separated; whether electricity is available or not is indirectly inferred through the line working current, and if no load works, whether electricity is available or not cannot be judged.

Therefore, the power loss sensing device which does not break the wire and is not directly contacted with the conducting wire is designed, and has market prospect.

SUMMERY OF THE UTILITY MODEL

To above technical problem, the utility model provides a lose electric perceptron, this lose electric perceptron need not insert original circuit, can judge whether electrified by the survey conductor, also need not the power failure operation, and can set up in a flexible way, use convenience very.

The technical scheme of the utility model is that: the power loss sensor comprises a shell and a detection assembly;

the detection assembly comprises an induction probe, an electric field sensor, a filter amplifier, a single chip microcomputer, a power supply, a wireless transmitter and a magnetic field sensor, wherein the induction probe is arranged on the outer wall of the shell and is electrically connected with the electric field sensor;

the magnetic field sensor is arranged in the shell and electrically connected with the single chip microcomputer, and the magnetic field sensor is also electrically connected with the power supply.

Preferably, the housing is provided with a mounting mechanism, and the mounting mechanism includes: the base is fixed on the shell, the base is provided with a mounting hole, the connecting shaft sleeve is arranged in the mounting hole, a plurality of horizontal jacks are formed in the side wall of the connecting shaft sleeve, a plurality of first threaded holes corresponding to the jacks are formed in the side face of the base, screws are arranged in the first threaded holes, one ends of the screws penetrate into the jacks, the connecting shaft sleeve is provided with vertical second threaded holes, the threaded rods are arranged in the second threaded holes, the threaded rods are provided with check nuts, the bottom of the threaded rods is fixed with insulating buckles, and the insulating buckles are connected to the conductors to be measured in a clamped mode.

Preferably, the induction probe is a thin film antenna.

Preferably, the wireless transmitter is a wireless transmitter adopting an NB-IOT narrowband wireless technology.

Preferably, the power supply is a lithium battery, and the lithium battery is arranged in the shell.

Preferably, the monitoring range of the electric field sensor is not more than 5 cm.

The utility model has the advantages that: by adopting an electric field detection principle, whether a detected conductor is electrified or not is accurately judged by measuring the intensity of a radiation electric field and the frequency of the electric field; the non-contact measuring method does not need power-off operation, and meanwhile, the non-contact measuring method is provided with an installation mechanism capable of adjusting the distance and the angle, is small in size, convenient to install and flexible to set.

Drawings

FIG. 1 is a schematic diagram of the connection of components of the present invention,

figure 2 is a schematic structural view of the mounting structure of the present invention,

figure 3 is a schematic view of the mounting structure after height adjustment,

in the figure, 1 is a conductor to be detected, 2 is a shell, 3 is a detection assembly, 31 is an induction probe, 32 is an electric field sensor, 33 is a filter amplifier, 34 is a single chip microcomputer, 35 is a wireless transmitter, 36 is a power supply, 37 is a magnetic field sensor, 4 is a mounting mechanism, 41 is a base, 42 is a connecting shaft sleeve, 43 is a screw, 44 is a threaded rod, 45 is a locknut, and 46 is an insulating buckle.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "back" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Fig. 1 and 2 show a power loss sensor, which comprises a housing 2 and a detection assembly 3;

the detection assembly comprises an induction probe 31, an electric field sensor 32, a filter amplifier 33, a single chip microcomputer 34, a power supply 36, a wireless transmitter 35 and a magnetic field sensor 37, wherein the induction probe 31 is arranged on the outer wall of the shell 2, the induction probe 31 is electrically connected with the electric field sensor 32, the electric field sensor 32 is arranged in the shell 2, the electric field sensor 32 is a conventional part also called as an electric field signal sensor and is used for measuring a power frequency electromagnetic field, for example, the electric field signal sensor adopts the Wuhan Bihai cloud sky science and technology, the specific structure and the installation mode are conventional technologies, so that repeated description is omitted, the electric field sensor 32 is electrically connected with the filter amplifier 33, the filter amplifier 33 is electrically connected with the single chip microcomputer 34, the single chip microcomputer 34 is electrically connected with the wireless transmitter 35, and both the filter amplifier 33 and the single chip microcomputer 34 are electrically connected with the power supply 36;

the magnetic field sensor 37 is arranged in the shell 2, the magnetic field sensor 37 is electrically connected with the single chip microcomputer 34, and the magnetic field sensor 37 is also electrically connected with the power supply 36.

Be equipped with installation mechanism 4 that can angle regulation and interval on the shell 2, installation mechanism 4 includes: base 41, connecting sleeve 42, threaded rod 44 and insulating buckle 46, base 41 is fixed in on the shell 2, be equipped with the mounting hole on the base 41, connecting sleeve 42 locates in the mounting hole, be equipped with a plurality of horizontal jacks on the connecting sleeve 42 lateral wall, be equipped with a plurality of first screw holes that correspond with the jack on the base 41 side, first threaded hole is equipped with screw 43, the one end of screw 43 is in going deep into the jack, be equipped with the second screw hole of vertical putting on the connecting sleeve 42, threaded rod 44 is located in the second screw hole, be equipped with lock nut 45 on the threaded rod 44, the bottom of threaded rod 44 is fixed with insulating buckle 46, insulating buckle 46 joint is on being surveyed the conductor, insulating buckle 46 is conventional part, concrete structure and mounting means and method of use are no longer repeated.

The working principle and the use method of the equipment in the embodiment are as follows: a conductor with alternating current, which radiates a power frequency electromagnetic field (generally 50Hz power frequency electromagnetic field) when current flows; the electric field sensor 32 monitors the existence of a power frequency electric field through the inductive probe 31 to determine whether the conductor is electrified, and the conductor can be detected even if no current flows through the conductor, and is not limited to measuring the power frequency electric field, and can also measure the electric field intensity; the electric field signal received by the electric field sensor 32 is shaped, amplified and conditioned by the filter amplifier 33, and then is sent to the ADC of the single chip microcomputer 34 for sampling operation; when the intensity of the signal is greater than the confirmed electrification threshold value, the electrification threshold value is determined according to the set value of the filter amplifier, which is a conventional technology, so that the description is omitted, and when the frequency is corresponding to the power frequency, the software judges that the circuit is electrified; when the line is judged to be power-off, after the line is required to be sampled and confirmed for multiple times, the multiple sampling is carried out to judge whether the line is power-off or not, the times can be freely set and are not less than 3 times, for example, 5 times, and after the power-off is confirmed, the single chip microcomputer 34 transmits information back to the control center through the wireless transmitter 35.

The magnetic field sensor 37 is arranged in the equipment, the equipment is sensed to be removed from the installation position through the change of the magnetic field, and the fault information of the equipment is reported immediately, so that the equipment is prevented from being considered to be damaged.

When the circuit normally operates, heartbeat data can be reported every 48 hours, and the heartbeat data comprises information such as self battery power, the current charged state of the circuit, whether a fault exists, wireless signal quality and the like.

Referring to fig. 2 and fig. 3, in this example, there is also provided a mounting mechanism 4 capable of adjusting the angle and the distance, so as to facilitate the installation of the device, when the angle of the device needs to be adjusted, the screw 43 is screwed out from the insertion hole, so that the connecting shaft sleeve 42 can rotate in the mounting hole, after rotating to a proper angle, the screw 43 is screwed in again for fixing, thereby adjusting the angle between the device and the tested conductor 1, when the distance between the device and the tested conductor needs to be adjusted, the housing 2 can be rotated only by screwing off the locknut 45, the length of the threaded rod 44 in the second threaded hole is adjusted, after adjusting to a proper distance, the locknut 45 is screwed on again, if the angle is greatly deviated at this time, the angle is adjusted again by the connecting shaft sleeve 42.

In this embodiment, the inductive probe 31 is a thin film antenna, which has light weight and can enhance the reception of electric field signals.

In this embodiment, the wireless transmitter 35 is a wireless transmitter that uses NB-IOT narrowband wireless technology. The communication part adopts NB-IOT narrow-band wireless technology, and the communication technology has the advantages that: 1. the working power consumption is low; 2. the signal receiving sensitivity is high, and the barrier penetrating capability is strong; 3. the operator covers the network, and the infrastructure is stable; 4. in areas with signal coverage, equipment can be deployed at will;

in this embodiment, the power source 36 is a lithium battery disposed within the housing. The lithium battery power supply is a conventional mature technology, and the specific connection mode of each part is not described in detail.

In this embodiment, the monitoring range of the electric field sensor 32 is not more than 5 cm, so that the crosstalk of other nearby conductors can be prevented.

The present invention is not limited to the above embodiments, and based on the technical solutions disclosed in the present invention, those skilled in the art can make some replacements and transformations for some technical features without creative labor according to the disclosed technical contents, and these replacements and transformations are all within the protection scope of the present invention.

Claims

1. Lose electric perceptron, including the shell, characterized by: the device also comprises a detection component;

2. The power loss sensor as in claim 1, wherein: be equipped with installation mechanism on the shell, installation mechanism includes: the base is fixed on the shell, the base is provided with a mounting hole, the connecting shaft sleeve is arranged in the mounting hole, a plurality of horizontal jacks are formed in the side wall of the connecting shaft sleeve, a plurality of first threaded holes corresponding to the jacks are formed in the side face of the base, screws are arranged in the first threaded holes, one ends of the screws penetrate into the jacks, the connecting shaft sleeve is provided with vertical second threaded holes, the threaded rods are arranged in the second threaded holes, the threaded rods are provided with check nuts, the bottom of the threaded rods is fixed with insulating buckles, and the insulating buckles are connected to the conductors to be measured in a clamped mode.

3. The loss of power sensor of claim 1, wherein: the induction probe is a film antenna.

4. The power loss sensor as in claim 1, wherein: the wireless transmitter is a wireless transmitter adopting NB-IOT narrowband wireless technology.

5. The power loss sensor as in claim 1, wherein: the power is a lithium battery, and the lithium battery is arranged in the shell.

6. The loss of power sensor of claim 1, wherein: the monitoring range of the electric field sensor is not more than 5 cm.