CN-121978590-A - Portable automatic gear shifting remote control device for transformer test

CN121978590ACN 121978590 ACN121978590 ACN 121978590ACN-121978590-A

Abstract

The invention discloses a portable automatic gear shifting remote control device for a transformer test, which comprises a shell, and a control unit, a dual-mode driving mechanism, a wireless communication module and a sensor assembly which are integrated in the shell, wherein a video monitoring module and a magnetic mounting unit are assembled on the shell, the magnetic mounting unit is used for detachably fixing the device near a voltage regulating switch panel of the transformer, and the risks of electric shock and high-altitude falling, which are caused by manual operation of operators which have to approach to electrified high-voltage equipment, are solved. Through designing wireless remote control and video monitoring integrated system, make operating personnel accomplish all shifting operations and state confirmation outside the safe distance, realize the intrinsically safe operation mode of man-machine separation.

Inventors

ZHANG LIN
LI JUNWEN
LIU YAN
ZUO YU
ZHAO XIAOMAN
ZHOU YUANGANG
LIU BO
JIANG RONGRONG
LUO JUN
Gui Yule
CHEN XIAO
YANG CHAO
Xiang Xingtong
TANG LIYI
CHEN JIAOLIN
LU YUCHU
WEI ZHEN
SHEN JUN
WANG RUIGUO
ZHANG SHALI
DUAN XIANGYUE
ZHENG CHUNJU
GAN MING
TIAN YONG
ZENG MING
YANG JIANLAN
BAO GUANGWEI
GUO TIANYUN
WU YUZHU
LIU YANG
CHEN YAFEI
SHI YAN
YANG JUNQIU
LU XINGFU

Assignees

贵州电网有限责任公司

Dates

Publication Date: 20260505
Application Date: 20251222

Claims (10)

1. The portable automatic shift remote control device for the transformer test is characterized by comprising a shell (1), and a control unit (2), a dual-mode driving mechanism (3), a wireless communication module (4) and a sensor assembly (5) which are integrated in the shell (1); the shell (1) is provided with a video monitoring module (6) and a magnetic mounting unit; The magnetic mounting unit is used for detachably fixing the device near a voltage regulating switch panel of the transformer; The dual-mode driving mechanism (3) comprises a switchable knob driving module (31) and a button driving module (32) which can be adapted to two voltage regulating switch operation modes, namely a knob type operation mode and a button type operation mode; The sensor assembly (5) is used for collecting pressure, angle and displacement signals in the operation process; The video monitoring module (6) is used for collecting gear indication information and operation action images of the voltage regulating switch in real time; the wireless communication module (4) is used for receiving a remote control instruction and returning operation data and state information; the control unit (2) is respectively and electrically connected with the dual-mode driving mechanism (3), the wireless communication module (4) and the sensor assembly (5).
2. The portable automatic shift remote control device for transformer test according to claim 1, wherein the sensor assembly (5) is a four-channel pressure sensor, and the control unit (2) realizes pattern recognition through a differential detection algorithm: Defining four pressure sensors as P 1 ~P 4 in real time, presetting a contact judgment threshold as P th , and calculating the number N contact of sensors for detecting the pressure exceeding P th ; When N contact =2 and the time difference deltat of the two triggering sensors is less than 0.5s and the displacement difference deltad is less than 2mm, judging the knob mode; When N contact =4 and all sensors trigger time differences max (|t i -t j |) <0.3s (i, j e {1,2,3,4 }), the button mode is determined.
3. The portable automatic shift remote control device for transformer test according to claim 2, wherein the dual-mode driving mechanism (3) further comprises a dual-mode switching servo motor and a gear rack transmission mechanism, and the control unit (2) controls the servo motor to drive the knob driving module (31) and the button driving module (32) to move to the working position through the gear rack transmission mechanism according to the mode identification result.
4. The portable automatic shift remote control device for transformer test according to claim 1, wherein the knob driving module (31) comprises a stepping motor, a reduction gear set and an adjustable chuck, the angle sensor in the sensor assembly (5) is a stepping motor encoder, and the pressure sensor is integrated in the adjustable chuck; The control unit (2) adopts a PID force-displacement closed-loop control algorithm, and adjusts the output torque and the rotating speed of the stepping motor according to the reaction force signal fed back by the pressure sensor and the rotating angle signal fed back by the angle sensor.
5. The automatic shift remote control device for portable transformer test according to claim 1, wherein the button driving module (32) comprises an electric push rod, a direct current electromagnet, an adjustable travel rod and a micro switch, and the displacement sensor in the sensor assembly (5) is a Hall displacement sensor and is integrated in the electromagnet.
6. The portable automatic shift remote control device for transformer test of claim 1, wherein the wireless communication module (4) adopts LoRa technology, has a working frequency of 433MHz, and adopts AES-128 encryption algorithm to encrypt and transmit control command and feedback data.
7. The portable automatic shift remote control device for transformer test according to claim 1, wherein the security verification of the remote control command by the control unit (2) comprises time stamp verification, verification code verification and gear validity verification.
8. The portable automatic shift remote control device for transformer test according to claim 1, wherein the video monitoring module (6) comprises two cameras, the optical axis of the first camera (61) is aligned to the shift indicator, the control unit (2) reads the current shift through template matching and OCR technology, the second camera (62) monitors the operation action, and the actual action parameters are calculated through an optical flow method, so that the consistency verification of shift change and operation action is realized.
9. The portable automatic shift remote control device for transformer test according to claim 1, further comprising a hardware protection component (8) and a data storage module; the hardware protection assembly (8) comprises an overcurrent protection unit, an overload protection unit and a mechanical limiting unit; The data storage module records operation time, gear information, sensor data sequences, visual verification results and alarm information, and the data can be returned to the background through the wireless communication module (4).
10. The portable automatic shift remote control device for transformer test according to claim 1, wherein the housing (1) is made of alloy material, and the adjustable chuck of the knob driving module (31) comprises four uniformly distributed clamping rubber blocks (7).

Description

Portable automatic gear shifting remote control device for transformer test Technical Field The invention relates to the field of gear shifting of transformers, in particular to a portable automatic gear shifting remote control device for transformer test. Background Along with the development of the operation, maintenance and overhaul of the power system to the intelligent and unmanned direction, the on-load voltage regulating switch gear shifting operation in the transformer test process is used as a frequent and key working link, and the improvement requirement of the operation mode is increasingly urgent. At present, aiming at the shift operation of a transformer, the existing technical means and operation modes in the industry mainly have the following defects: Traditional shift operation is completely manually performed on the spot. The operator must access or even contact the live transformer and its voltage regulating switch mechanism. The operation in high-voltage equipment area has the electric shock risk, if the voltage regulating switch is located the transformer eminence or needs climbing equipment framework, still accompanies the potential safety hazard that the high altitude falls. Particularly, during night, severe weather or emergency repair, the field environment is complex, and the safety risk is further amplified. The prior art lacks a reliable remote control means, and cannot realize a safe operation mode of 'man-machine separation'. A complete transformer test (e.g., a dc resistance test) typically requires a multi-gear shift. The manual operation flow is complicated, and at least two people (one person for operation and one person for monitoring) and even three people (adding recording personnel) are required to finish the operation cooperatively. The operator needs to go back and forth between the control room and the equipment area or carry out remote confirmation through the interphone, and single gear shifting operation takes up to a plurality of minutes, so that the whole test time is unnecessarily prolonged, and the utilization rate of a power supply reliability overhaul window is affected. The manual operation is completely dependent on the experience and hand feeling of operators. For a push button switch, the pressing force and the stroke are difficult to control accurately, poor contact can be caused by too small pressure, and a micro switch mechanism can be damaged by too large pressure or deflection. For a knob type switch, the rotation angle is estimated by visual inspection, errors are easy to generate, gears cannot be in place or wander between gears possibly, accuracy of test data is affected (repeated test is needed), abnormal abrasion of mechanical or electrical parts in the voltage regulating switch is possibly caused by abnormal operation, and service life of equipment is shortened. Some auxiliary tools or simple electric devices existing in the market often have very single functions. Some can be simply pressed against a particular push-button switch, and others are designed specifically for a particular model of knob. One set of devices cannot accommodate both the dominant modes of operation of the buttons and knobs. In order to face transformer voltage regulating switches with complicated types and different interfaces in a transformer substation, various tools are needed to be equipped, and complexity of equipment and complexity of field use are increased. Meanwhile, most of the tools lack state feedback and intelligent control functions, still belong to 'open loop' simple alternative manual operation, and cannot guarantee the accuracy and reliability of operation. The existing manual or simple tool operation mode is seriously dependent on visual observation (looking at a gear indicator) and experience judgment of operators, and the risk of misjudgment and missed judgment exists. The operation lacks digital recording and traceability. Meanwhile, the whole operation link has no embedded safety protection mechanism, such as gear upper and lower limit protection, operation instruction encryption authentication, overload instant protection and the like, cannot be performed on a software layer, and an obvious short board exists in the aspects of preventing misoperation and malicious interference. Disclosure of Invention Therefore, the invention aims to solve the technical problem that the personal safety risk cannot be fundamentally eradicated. The technical problems are solved by the following technical proposal that the invention provides a portable automatic shift remote control device for transformer test, which comprises, The device comprises a shell, a control unit, a dual-mode driving mechanism, a wireless communication module and a sensor assembly, wherein the control unit, the dual-mode driving mechanism, the wireless communication module and the sensor assembly are integrated in the shell; The shell is provided with a video monitoring module and a magnetic