Remote control device for on-load tap-changer of transformer

Abstract

The utility model discloses a transformer on-load tap-changer remote control device which comprises an on-load tap-changer remote control device body, the on-load tap-changer remote control device body comprises a shell, and a PLC all-in-one machine, a voltage detection module, an LED nixie tube counter, an offline voice module, a remote control module, a lithium ion battery and an RS485 communication module are installed in the shell. And a key remote control module is embedded and fixed on the front side of the shell. According to the utility model, the transformer on-load control box can be operated and subjected to gear adjustment operation through voice remote control and key remote control modes, the operation can be completed by one person, the working intensity of on-site working personnel is reduced, time and labor are saved, the mode does not need climbing operation of the personnel, potential safety hazards are reduced, and the working efficiency is improved. The voice control and key remote control switchable mode improves the use flexibility and meets the use requirements.

Description

TECHNICAL FIELD

[0001] The utility model relates to transformer testing technical field especially relates to transformer on -load tap changer remote control device. BACKGROUND

[0002] The transformer is the core link in the power system, and its importance in the power grid is equivalent to the "heart" of the human body, with the rapid development of the power grid, the user's demand for power supply reliability is higher and higher, the main transformer outage maintenance time is gradually shortened, and the high voltage routine test projects during the main transformer outage maintenance include winding DC resistance test, on-load tap changer test, winding capacitance and dielectric loss, bushing insulation test and core clamp insulation, wherein, for the on-load voltage regulating transformer, the DC resistance test needs to measure the winding DC resistance of each tap of the transformer, and the DC resistance test is the most important and time-consuming test project in the transformer pre-test, in order to ensure that the test result is qualified, generally, the grinding gear needs to be repeatedly carried out before the test, and the DC resistance test needs to be adjusted;

[0003] In the prior art, when the transformer DC resistance is tested, the gear position is switched through manual rotation of a knob or pressing of a button beside the on-load switch control cabinet in a manual mode, and the following problems exist in the test process: 1. When the gear is adjusted, the adjustment personnel and the instrument operator need to call each other to confirm the tap position, the test site environment is noisy, and the two people are far apart, so remote communication through a intercom is needed, and the process is complicated and time-consuming; 2. During the test, a special person needs to stand in front of the voltage regulating switch and repeatedly perform the on-load switch "up" and "down" operation until the DC resistance test is completed, since most transformers are located at a high position, the voltage regulating operation needs to be performed by standing on a ladder, and the climbing operation mode has safety hazards; in view of the above problems, the transformer on-load tap changer remote control device is provided. UTILITY MODEL CONTENTS

[0004] The utility model discloses a transformer on-load tap changer remote control device which is provided to solve the problems in the prior art.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] The transformer on-load tap changer remote control device comprises a transformer on-load tap changer remote control device body, wherein the transformer on-load tap changer remote control device body comprises a shell, and the shell is internally provided with a PLC integrated machine, a voltage detection module, an LED nixie tube counter, an offline voice module, a remote control module, a lithium ion battery and an RS485 communication module; a key remote control module is embedded and fixed on the front side of the shell; the PLC integrated machine, the voltage detection module, the PLC nixie tube counter, the offline voice module and the remote control module are electrically connected with the lithium ion battery; the key remote control module, the voltage detection module, the LED nixie tube counter, the offline voice module and the remote control module are connected with the PLC integrated machine; the remote control module is connected with a transformer on-load control box; and the RS485 communication module is connected with the transformer on-load control box, the PLC integrated machine, the voltage detection module and the LED nixie tube counter.

[0007] The transformer on-load control box comprises a motor and a secondary terminal control port.

[0008] Preferably, the key remote control module comprises a start button, a clear button, a count-up button, a count-down button, a step-up button 1->N, a step-down button N->1, an action indicator lamp and an emergency stop button which are embedded and fixed on the front side of the shell; the start button is used for controlling the start of the transformer on-load tap changer remote control device body; a gear position indication screen is embedded and fixed on the front side of the shell; the LED nixie tube counter is internally provided with a PCB circuit board; the gear position indication screen, the clear button, the count-up button and the count-down button are electrically connected with the PCB circuit board; the gear position indication screen is used for displaying the gear position; the clear button is used for clearing the PLC nixie tube counter; and the action indicator lamp is used for displaying the working state of the motor.

[0009] Preferably, a loudspeaker and a battery power display screen are embedded and fixed on the front side of the shell; the loudspeaker is electrically connected with the offline voice module; the battery power display screen is electrically connected with the lithium ion battery; the battery power display screen is used for displaying the power of the lithium ion battery; and the loudspeaker is used for receiving external voice.

[0010] Preferably, two wire terminals which are electrically connected with the PLC integrated machine are mounted on the transformer on-load tap changer remote control device body; the two wire terminals are respectively electrically connected with the step-up button 1->N and the step-down button N->1; and the two wire terminals are matched with the secondary terminal control port.

[0011] Preferably, the voltage detection module is of YVT8-B type; the voltage detection module is provided with a voltage collection interface; the voltage collection interface is connected with a voltage output interface of the RS485 communication module; and the RS485 communication module is connected with a voltage output port of the motor.

[0012] Preferably, the start button, the clear button, the count-up button, the count-down button, the upshift button 1->N, the downshift button N->1, the action indicator lamp and the emergency stop button are electrically connected with the PLC all-in-one machine, the emergency stop button is grounded, the remote control module is provided with a normally closed pin, a normally open pin and a common pin, the clear button, the upshift button 1->N and the downshift button N->1 are electrically connected with the normally closed pin of the remote control module, the common pin of the remote control module is grounded, the PLC all-in-one machine is further electrically connected with an emitter A and an emitter B, the emitter A and the emitter B are connected with the RS485 communication module, and the PLC all-in-one machine communicates with the transformer on-load control box through the RS485 communication module.

[0013] Preferably, the offline voice module comprises an ASB voice module, a USB serial communication tool and a multi-way relay, the ASB voice module is used for identifying and responding to the voice command received by the loudspeaker, the voice commands for awakening the on-load tap changer remote control device body include "Hello, XiaoZhi", "XiaoZhi wizard" and "XiaoZhi XiaoZhi", when the awakening command is received, the responding statement is "I am here, what can I do for you", the voice commands for transformer tap changing include "up one step" and "down one step", and the responding statements are "upgrading" and "downgrading" respectively, and the voice command for clearing the LED nixie tube counter is "clear", and the responding statement is "clearing".

[0014] Compared with the prior art, the utility model has the advantages that:

[0015] 1. Through cooperation of the offline voice module, the PLC all-in-one machine and the remote control module, the transformer on-load control box can be remotely controlled by voice to realize downshift and upshift operation, the working strength of the on-site operator is reduced, and the personnel need not climb to operate, so that the safety hidden danger is reduced;

[0016] 2. Through setting of the key remote control module, the transformer on-load control box can be remotely controlled by key, and the voice control and the key remote control can be switched, so that the use flexibility is improved, the instrument operation and the gear adjustment can be completed by one person, the waste of manpower and time of special person for gear adjustment is saved, two persons need not communicate with each other, and the process is simple;

[0017] The utility model can remotely control the transformer on-load control box by voice and key, and one person can complete the operation and the gear adjustment, the working strength of the on-site operator is reduced, time and labor are saved, the personnel need not climb to operate, so that the safety hidden danger is reduced, the voice control and the key remote control can be switched, the use flexibility is improved, and the use requirement is met. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The utility model provides a transformer on -load tap changer remote control device's structure schematic view is provided for the utility model,

[0019] Figure 2 The utility model provides a transformer on -load tap changer remote control device's connection block diagram is provided for the utility model,

[0020] Figure 3 The utility model provides a transformer on -load tap changer remote control device's circuit diagram that PLC all -in -one, remote control module and LED nixie tube counter are connected is provided for the utility model,

[0021] Figure 4 The utility model provides a transformer on -load tap changer remote control device's work flow chart is provided for the utility model.

[0022] In the drawing: 100, shell, 1, speaker, 2, gear instruction screen, 3, battery power display screen. Specific implementation

[0023] Below, the technical scheme in the utility model embodiment will be clearly and completely described in conjunction with the drawings in the utility model embodiment, obviously, the described embodiment only is a part of the utility model embodiment, is not all the embodiment.

[0024] Refer to Figures 1-4 , transformer on -load tap changer remote control device, including on -load tap changer remote control device ontology, on -load tap changer remote control device ontology includes shell 100, installs in shell 100 PLC all -in -one, voltage detection module, LED nixie tube counter, offline voice module, remote control module, lithium ion battery and RS485 communication module, the front side of shell 100 is embedded and fixed with button remote control module, PLC all -in -one, voltage detection module, PLC nixie tube counter, offline voice module and remote control module are electrically connected with lithium ion battery, button remote control module, voltage detection module, LED nixie tube counter, offline voice module and remote control module are connected with PLC all -in -one, remote control module is connected with transformer on -load control box, RS485 communication module is connected with transformer on -load control box, PLC all -in -one, voltage detection module and LED nixie tube counter,

[0025] Wherein the front side of shell 100 is embedded and fixed with speaker 1 and battery power display screen 3, speaker 1 is electrically connected with offline voice module, battery power display screen 3 is electrically connected with lithium ion battery, battery power display screen 3 is used to show the power condition of lithium ion battery, speaker 1 is used to receive external voice,

[0026] The offline voice module includes an ASB voice module, a USB serial communication tool and a multi-channel relay. The ASB voice module is used for recognizing and responding to the voice commands received by the loudspeaker 1. The voice commands for waking up the body of the on-load tap changer remote control device include "Hello, little intelligence", "Little intelligence spirit" and "Little intelligence little intelligence". When the wake-up command is received, the response statement is "I am here, what can I do for you". The voice commands for transformer tap changing include "Increase one step" and "Decrease one step". The response statements are "Increasing step" and "Decreasing step", respectively. The voice command for clearing the LED nixie tube counter is "Clear zero". The response statement is "Clearing zero".

[0027] The transformer on-load control box includes a motor and a secondary terminal control port. The body of the on-load tap changer remote control device is provided with two wiring terminals electrically connected with the PLC all-in-one machine. The two wiring terminals are electrically connected with the increase step button 1->N and the decrease step button N->1, respectively. The two wiring terminals are matched with the secondary terminal control port. The secondary terminal control port is arranged at a low position, so that personnel can directly plug and connect at the low position. The plug-in wiring terminals can quickly complete installation and removal, and do not produce unsafe factors for the on-load operation and wiring mode.

[0028] The key remote control module includes a power-on button, a clear button, a count-up button, a count-down button, an increase step button 1->N, a decrease step button N->1, an action indicator lamp and an emergency stop button embedded and fixed on the front side of the shell 100. The power-on button is used for controlling the opening of the body of the on-load tap changer remote control device. After being opened, the loudspeaker 1 voice broadcasts: "Hello, I am the test assistant little intelligence. You can call me if you need it". The shell 100 is embedded and fixed with a gear position indication screen 2. The LED nixie tube counter is internally provided with a PCB circuit board. The gear position indication screen 2, the clear button, the count-up button and the count-down button are electrically connected with the PCB circuit board. The gear position indication screen 2 is used for displaying the gear position. The clear button is used for clearing the PLC nixie tube counter. The action indicator lamp is used for displaying the working state of the motor.

[0029] The power-on button, the clear button, the count-up button, the count-down button, the increase step button 1->N, the decrease step button N->1, the action indicator lamp and the emergency stop button are electrically connected with the PLC all-in-one machine. The emergency stop button is grounded. The remote control module is provided with a normally closed pin, a normally open pin and a common pin. The clear button, the increase step button 1->N and the decrease step button N->1 are electrically connected with the normally closed pin of the remote control module. The common pin of the remote control module is grounded. The PLC all-in-one machine is further electrically connected with an emitter A and an emitter B. The emitter A and the emitter B are connected with the RS485 communication module. The PLC all-in-one machine communicates with the transformer on-load control box through the RS485 communication module.

[0030] The voltage detection module is YVT8-B, and a voltage collection interface is arranged on the voltage detection module, the voltage collection interface is connected with a voltage output interface on the RS485 communication module, and the RS485 communication module is connected with a voltage output port on the motor, the transformer on-load control box can be operated and gear adjusting operation is conducted in a voice remote control mode and a button remote control mode, one person can complete the operation, the working strength of on-site operating personnel is reduced, time and labor are saved, personnel need not to operate by climbing, safety hidden dangers are reduced, the voice control and the button remote control can be switched, use flexibility is improved, and use requirements are met.

[0031] Working principle: when in use, two wire connectors are inserted into the secondary terminal control port to realize the connection between the transformer on-load tap changer remote control device body and the transformer on-load control box, the secondary terminal control port is arranged at a low position, the whole device is started by pressing, after starting, the offline voice module broadcasts through the loudspeaker 1: "Hello, I am the test assistant Xiaozhi, you can call me if you need!", after starting, the voice mode or the button mode can be entered for operation, when the voice control is conducted, the operator awakens the on-load tap changer remote control device body through the voice commands "Hello, Xiaozhi", "Xiaozhi spirit" or "Xiaozhi Xiaozhi", after receiving the awakening command, the loudspeaker 1 responds "I am here, what can I do for you", the on-load tap changer remote control device body can be controlled through the voice commands "clear", "upgrade one gear" or "lower one gear", meanwhile, the on-load tap changer remote control device body can also be controlled through the buttons in the button remote control module, after receiving the control instruction, the control instruction is transmitted to the PLC all-in-one machine, the PLC all-in-one machine controls the on-load tap changer remote control device body through the remote control module, after the on-load tap changer remote control device body receives the remote control signal, the motor is controlled to act and conduct gear adjusting operation, meanwhile, the voltage output by the motor is transmitted to the voltage detection module through the RS485 communication module, the voltage detection module detects the voltage and feeds back to the PLC all-in-one machine, the PLC all-in-one machine controls the action indicator light to be turned on to display the working state of the motor, and then the operator can check the working state of the motor in real time, meanwhile, the LED nixie tube counter counts, after the motor action is completed, the gear adjusting operation is completed, the LED nixie tube counter is updated to the current indication gear, the gear is displayed through the gear indication screen 2, after the test is completed, the operator can clear the LED nixie tube counter through button operation or voice command, and then the next use can be waited, the transformer on-load control box can be operated and the gear adjusting operation can be conducted in the voice remote control mode and the button remote control mode, one person can complete the operation, and personnel operation is facilitated.

[0032] The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and any skilled person in the art, according to the technical scheme and the inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A remote control device for on-load tap changer of a transformer, comprising a body of the remote control device for on-load tap changer, characterized in that, The on-load tap changer remote control device body comprises a shell (100), a PLC all-in-one machine, a voltage detection module, an LED nixie tube counter, an offline voice module, a remote control module, a lithium ion battery and an RS485 communication module are installed in the shell (100), a key remote control module is embedded and fixed on the front side of the shell (100), the PLC all-in-one machine, the voltage detection module, the PLC nixie tube counter, the offline voice module and the remote control module are electrically connected with the lithium ion battery, the key remote control module, the voltage detection module, the LED nixie tube counter, the offline voice module and the remote control module are connected with the PLC all-in-one machine, the remote control module is connected with a transformer on-load control box, and the RS485 communication module is connected with the transformer on-load control box, the PLC all-in-one machine, the voltage detection module and the LED nixie tube counter. The transformer on-load control box comprises a motor and a secondary terminal control port.

2. The transformer on-load tap changer remote control device of claim 1, wherein, The key remote control module comprises a start button, a clear button, a count-up button, a count-down button, a gear-up button 1->N, a gear-down button N->1, an action indicator lamp and an emergency stop button embedded and fixed on the front side of the shell (100), the start button is used for controlling the start of the on-load tap changer remote control device body, a gear position indication screen (2) is embedded and fixed on the front side of the shell (100), the LED nixie tube counter is provided with a PCB circuit board, the gear position indication screen (2), the clear button, the count-up button and the count-down button are electrically connected with the PCB circuit board, the gear position indication screen (2) is used for displaying the gear position, the clear button is used for clearing the PLC nixie tube counter, and the action indicator lamp is used for displaying the working state of the motor.

3. The transformer on-load tap changer remote control device of claim 1, wherein, A loudspeaker (1) and a battery power display screen (3) are embedded and fixed on the front side of the shell (100), the loudspeaker (1) is electrically connected with the offline voice module, the battery power display screen (3) is electrically connected with the lithium ion battery, the battery power display screen (3) is used for displaying the power of the lithium ion battery, and the loudspeaker (1) is used for receiving external voice.

4. The transformer on-load tap changer remote control device of claim 2, wherein, Two wiring heads electrically connected with the PLC all-in-one machine are installed on the on-load tap changer remote control device body, the two wiring heads are electrically connected with the gear-up button 1->N and the gear-down button N->1 respectively, and the two wiring heads are matched with the secondary terminal control port.

5. The transformer on-load tap changer remote control device of claim 1, wherein, The voltage detection module is of YVT8-B type, a voltage acquisition interface is arranged on the voltage detection module, the voltage acquisition interface is connected with a voltage output interface on the RS485 communication module, and the RS485 communication module is connected with a voltage output port on the motor.

6. The transformer on-load tap changer remote control device of claim 2, wherein, The start button, the clear button, the count-up button, the count-down button, the upshift button 1->N, the downshift button N->1, the action indicator lamp and the emergency stop button are electrically connected with the PLC all-in-one machine, the emergency stop button is grounded, the remote control module is provided with a normally closed pin, a normally open pin and a common pin, the clear button, the upshift button 1->N and the downshift button N->1 are electrically connected with the normally closed pin of the remote control module, the common pin of the remote control module is grounded, the PLC all-in-one machine is further electrically connected with an emitter A and an emitter B, the emitter A and the emitter B are connected with the RS485 communication module, and the PLC all-in-one machine communicates with the transformer on-load control box through the RS485 communication module.

7. The transformer on-load tap changer remote control device of claim 1, wherein, The offline voice module comprises an ASB voice module, a USB serial communication tool and a multi-channel relay, and the ASB voice module is used for identifying and responding to the voice command received by the loudspeaker (1).

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