KR102505108B1 - Remotely Controlled Rectifier System for Piping Damage Detection and control method using the same - Google Patents

Abstract

The present invention relates to a smart rectification system and a control method of the smart rectification system.

Description

Remotely Controlled Rectifier System for Piping Damage Detection and control method using the same}

The present invention relates to a remote control type smart rectification system for detecting damaged pipe sheathing including both a DCVG detection function and an ACVG detection function, and a control method using the same.

If the polyurethane coating of metal pipes buried underground is damaged, a large amount of electric current is consumed, and corrosion of the pipe proceeds quickly when electrical protection performance is poor.

Therefore, in order to find out the damage to the coating, the inspection of the damage to the coating of the pipe is carried out.

For example, the ACVG method is used rather than the DCVG method in the interference of other underground facilities that are cathodic protection such as water supply, DC subway leakage current interference, and parallel piping sections that are cathodic protection, and AC induced interference by high-voltage transmission lines and In areas with AC interference, the DCVG method is used.

Equipment for detecting pipe sheath damage can be largely divided into DCVG equipment for DCVG method exploration and ACVG equipment for ACVG method exploration, and the DC on-off output function for DCVG method exploration is implemented in existing external powered rectifiers. Currently, a DC output device or an AC output device is installed in the exploration section to detect the damaged coating of buried piping. A rectifier is used for the DC output device (separate DC output device is installed in the sacrificial anode method section), but ACVG method exploration For this, the rectifier power must be turned off (DC output device off) and a separate AC output device must be installed in the exploration section.

That is, since the AC output device for ACVG exploration is not separately installed in the existing rectifier, in the case of ACVG exploration, there is a problem in that separate equipment other than the existing rectifier is required.

1 shows the use of an AC output device connected to a conventional rectifier.

As shown in FIG. 1, when an AC output device is connected to an existing rectifier and used, the maximum output of the AC output device is 100V and 3A, and there is a risk of human damage such as electric shock due to operator carelessness, and the DC output is not completely blocked. If AC is output from, there is a risk of physical damage such as device damage.

In addition, when a signal does not reach or a problem occurs in the output device during the inspection of the damaged part of the pipe cover, it is impossible to check the status of the output device in the remote sensing section.

When using the ACVG method and the DCVG method, there is a problem such as mutual interference. To change the ACVG method exploration method to the DCVG method or to change the DCVG method exploration method to the ACVG method, move a long distance, dismantle the output device in use, and use it. It is very inefficient and takes a lot of time to switch to an output device that needs to be converted to an output device that requires a lot of time. Therefore, a DC output device and an AC output device for detecting pipe sheath damage are directly mounted on the rectifier, and control functions for each exploration and IOT communication method are used. If provided, the operator can select DCVG exploration or ACVG exploration in a desired way at the exploration site, effectively increasing the worker's work efficiency for pipe cover damage detection.

For example, Korean Patent Document No. 10-0652077 relates to a rectifier control device for an electric method, and uses a bi-directional rectifier but recognizes having an output device for ACVG exploration and remotely controls the rectifier. There is no awareness of this, and there is a problem that separate equipment is required when a worker uses ACVG equipment to explore pipe coating damage.

For example, Korean Patent Document No. 10-0945013 relates to an electric method control device and method, and a system using the same, and there is no recognition of having an output device for ACVG exploration, so that a worker damages the pipe coating. When using ACVG equipment to explore, there is a problem that separate equipment is required.

(Patent Document 1) Korea Patent Document No. 10-0652077

(Patent Document 2) Korea Patent Document No. 10-0945013

The present invention has been made to solve the above problems.

Specifically, regardless of the type of exploration method such as the ACVG method and the DCVG method, the pipe coating damage detection is performed and controlled without mutual interference.

In addition, it is to perform pipe coating damage inspection through remote control of the smart rectification system.

In addition, it is to provide a display module capable of monitoring and controlling the smart rectifier system so that the operator can easily control the rectifier.

One embodiment of the present invention for solving the above problems, as a smart rectification system for preventing and detecting damage in the pipe, the rectifier (100); and a control terminal 200 located remotely from the rectifier 100 and including a remote display module 210 transmitting remote input information to the rectifier 100, wherein the rectifier 100 comprises the a communication module 110 that receives the remote input information from the control terminal 200; a local display module 120 where local input information is generated; An output module 130 including a DC output unit 131 outputting DC power, an AC output unit 132 outputting AC power, and a piping type DC output unit 133; and receives any one of the remote input information and the local input information, and turns on the DC output unit 131 and the AC output unit 132 according to either one of the remote input information or the local input information. (on) or off (off) a control module 140 for controlling either one; When selection information is input to the rectifier 100, the local display module 120 generates the local input information, and the remote display module 210 sends the selection information to the control terminal 200. When is input, this is generated as the remote input information, the selection information includes DCVG selection information and ACVG selection information, and the local display module 120 transmits the local input information to the control module 140, , The remote display module 210 transmits the remote input information to the control module 140 through the communication module 110, and the control module 140 selects the remote input information or the local input information. If any one includes the ACVG selection information, the DC output unit 131 is turned off and the AC output unit 132 is controlled to be turned on, and the control module 140 controls the remote input information or the local input information. If any one of the above includes the DCVG selection information, the AC output unit 132 is turned off and the DC output unit 131 is controlled to turn on.

In one embodiment, the DCVG selection information includes: exploration method switching selection information including an ACVG search switching mode; control selection information including a local mode or a remote mode; and manual control of the voltage of the DC output unit 131. Mode selection information including an automatic mode for adjusting a mode and method potential value; Operation selection information including whether the rectifier 100 is operating; Interrupter operation selection information including an on-off time of the interrupter 131a; and GPS status display selection information including GPS and SYNC Time according to the location of the rectifier 100; and, when the control selection information includes the remote mode, the mode selection information, the operation selection information, and the interrupter operation selection information are deactivated in the local display module 120, and the control selection information determines the local mode. If included, the mode selection information, the operation selection information, and the interrupter operation selection information are deactivated in the remote display module 210, and the DCVG selection information is output, and the control selection information is selected from the remote mode or the local mode. If any one is included, the search method switching selection information may be activated when the operation selection information outputs an operation stop of the rectifier 100.

In one embodiment, the ACVG selection information may include: exploration method switching selection information including a DCVG exploration switching mode; mode selection information; and operation selection information for selecting whether or not to operate the rectifier 100.

In one embodiment, the DC output unit 131 outputs 60V / 30A, the AC output unit 132 is standardized to output 80V / 2A, and the rectifier 100 outputs the DC output unit 131 ) operates the relay 131b to measure a small current when the current output from the DC output unit 131 is greater than 0A and less than 5A, and the rectifier 100 measures a large current when the current output from the DC output unit 131 is greater than 5A and less than 30A. It is possible to operate the relay 131b to do so.

In addition, as a method of controlling the smart rectification system, the output module 130 further includes a piping-type DC output unit 133, (a) operating the smart rectification system in a piping-type DC output mode; (b) operating the smart rectification system in DCVG exploration mode; and (c) operating the smart rectification system in an ACVG exploration mode, wherein the step (a) comprises: (a1) applying power to the rectifier 100; (a2) checking the DC value of the piping type DC output unit 133; and (a3) confirming that the AC output unit 132 is turned off and controlling the DC value of the piping type DC output unit 133.

In one embodiment, the step (b) includes, at the same time as the step (a3), (b1) setting an on-off time of the interrupter 131a of the DC output unit 131; (b2) setting the on-off time of the relay 131b of the DC output unit 131 to the on-off time of the interrupter 131a set in step (b1); (b3) confirming that the AC output unit 132 is off; and (b4) operating the DC output unit 131 and performing a DCVG search to check the DC value of the piping-type DC output unit 133; can include

In one embodiment, the step (c) may include, at the same time as the step (a3), (c1) confirming that the DC output unit 133 is off; (c2) inputting voltage, current values and output frequency ratios to the AC output unit 132; (c3) calculating an output value using the value input in step (c2) and then outputting the calculated output value through the AC output unit 132; and (c4) checking the DC value of the piping type DC output unit 133 by operating the AC output unit 132 and performing an ACVG search.

In one embodiment, when the selection information is DCVG selection information, step (b) is performed, and when the selection information is ACVG selection information, step (c) may be performed.

In one embodiment, the step (b) may include: (b5) resetting the smart rectification system when the interrupter 131a stops operating differently from a user control signal; (b6) resetting the latest on-off time among the on-off times of the interrupter 131a set in the step (b1) to the on-off time of the relay 131b in the step (b2); and (b7) performing step (b4) again using the most recent output voltage among the output voltages of the DC output unit 131 operated in step (b4).

In the smart rectification system according to the present invention, regardless of the type of exploration method, an operator can perform pipe coating damage detection.

In addition, since the output between the DC output unit and the AC output unit of the smart rectification system can be controlled, it is possible to prevent each output unit from being damaged by mutual interference.

In addition, since the pipe coating damage detection can be performed through the remote control of the smart rectification system, it is possible to effectively increase the worker's work efficiency for the pipe coating damage detection.

1 is a diagram showing the connection of ACVC exploration equipment to a conventional externally powered rectifier.
2 and 3 are schematic diagrams showing a smart rectification system according to the present invention.
4 and 5 are views for explaining a local display module according to the present invention.
6 is a photograph showing a local display module according to the present invention.
7 is a photograph showing that the smart rectification system according to the present invention is installed in the field.
8 is a diagram for explaining a remote display module according to the present invention.
9 is a flowchart illustrating a control method of a smart rectification system according to the present invention.
10 and 11 are flow charts for explaining a piping-type DC output mode and a DCVG search mode, respectively.
12 is a diagram illustrating a control method according to an operation of an interrupter of a smart commutation system according to the present invention.
13 is a flowchart for explaining the ACVG exploration mode.
14 is a diagram showing a control method according to a current value measured in a smart rectification system according to the present invention.

In some cases, in order to avoid obscuring the concept of the present invention, well-known structures and devices may be omitted or may be shown in block diagram form centering on core functions of each structure and device.

In addition, in describing the embodiments of the present invention, if it is determined that a detailed description of a known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description will be omitted. In addition, the terms to be described later are terms defined in consideration of functions in the embodiment of the present invention, which may vary according to the intention or custom of the operator or operator. Therefore, the definition should be made based on the contents throughout this specification.

Hereinafter, “output” means voltage/current/mode potential value, etc. For example, DC output means DC voltage/current/mode potential value.

Hereinafter, "user control signal" refers to a signal transmitted by a user of the system according to the present invention to start or stop an operation of a corresponding output unit in order to control a DC output unit or an AC output unit. For example, if the interrupter 131a stops operating unlike the user control signal, this means that the system suddenly stops due to a situation unexpected by the user.

Hereinafter, the present invention will be described in more detail with reference to the drawings.

1. Description of the composition of the smart rectification system

2 to 8, the configuration of the smart rectification system according to the present invention will be described.

A smart rectification system according to the present invention includes a rectifier 100 and a control terminal 200.

The rectifier 100 means a device that supplies AC or DC power to prevent damage (corrosion) of the pipe coating and allow the pipe coating damage detection device to detect damage to the pipe coating.

The rectifier 100 includes an output module 130 and a control module 140 .

The output module 130 is a module that outputs DC power or AC power.

The output module 130 includes a DC output unit 131 outputting DC power, an AC output unit 132 outputting AC power, and a piping type DC output unit 133 outputting DC power. The output module 130 may output power according to the standard of the rectifier 100 . For example, the DC output unit 131 and the piping type DC output unit 133 may output a maximum of 60V/30A, and the AC output unit 132 may output a maximum of 80V/2A, but is not limited thereto. .

The DC output unit 131 includes an interrupter 131a and a relay 131b, and outputs a DC voltage for DCVG detection.

The AC output unit 132 outputs an AC voltage for ACVG exploration.

The piping method DC output unit 133 outputs a DC voltage for the piping method.

At this time, the piping type DC output unit 133 may output DC of the same standard as the DC output unit 131, but is not limited thereto.

The control module 140 is a module that controls the rectifier 100 and can control the output module 130 and the interrupter 131a and the relay 131b mounted in the rectifier 100 .

The control module 140 turns on or turns off one or more outputs of the output module 130, and includes the aforementioned DC output unit 131, AC output unit 132, and piping type DC output unit. The output of (133) can be turned on or off.

The output lines of the DC output unit 131 and the AC output unit 132 are commonly tied to the city gas pipe, but when the DC output unit 131 and the AC output unit 132 are not accurately controlled, the DC output unit 131 ), the AC output unit 132 may be damaged.

Referring to FIG. 3 , it is shown that the control module 140 controls the output module 130 , the interrupter 131a and the relay 131b.

As the control module 140 controls the output between the DC output unit 131 and the AC output unit 132, it is possible to prevent each output unit from being damaged by the other.

That is, the control module 140 may turn off the output unit used for the unselected mode under the control of the control module 140 when the mode is changed between the DCVG search mode and the ACVG search mode of the rectifier 100 described later.

In addition, the control module 140 may monitor the output of the interrupter 131a and monitor current values of the DC output unit 131 and the AC output unit 132 in real time. A detailed description of this will be given later.

In addition, the control module 140 receives local input information and remote input information from the local display module 120 and the remote display module 210, respectively, and outputs the output module 130 according to the local input information or the remote input information. can control. A detailed description of this will be given later.

At this time, in addition to the control by the control module 140, the rectifier 100 may be separately loaded with a program for controlling the DC output unit 131, the AC output unit 132, and the piping type DC output unit 133. .

The rectifier 100 further includes a communication module 110 and a local display module 120 .

The communication module 110 is a module that is connected to the control terminal 200 to be described later and receives remote input information from the control terminal 200 .

The communication module 110 may receive remote input information and transmit it to the control module 140 .

Referring to FIGS. 4 to 6 , the local display module 120 will be described. The local display module 120 is an input display device and means a module that displays selection information and state information of the rectifier 100 to the user.

Selection information refers to information that a user can select for controlling the rectifier 100 . The selection information includes DCVG selection information and ACVG selection information. A user may select selection information through a visible screen of the local display module 120 . The local display module 120 transmits local input information generated according to the user's selection information to the control module 140 .

At this time, the DCVG selection information is not limited to the selection of the DCVG exploration mode, and the method potential can be adjusted in the automatic mode in the mode selection information included in the DCVG selection information described later, so that the piping method DC output mode can be controlled. . This will be described later.

State information means information for monitoring the rectifier 100 as information for viewing the current state of the rectifier 100 other than selection information that can be selected by the user, and can be displayed together with the above selection information on one display. It is not limited thereto. As for the state information, DCVG state information is visible when the DCVG exploration mode is selected, and ACVG state information is visible when the ACVG exploration mode is selected.

The local display module 120 may display one or more selection information and status information.

DCVG selection information is displayed on the initial screen of the local display module 120 .

FIG. 4 shows a screen of the local display module 120 in which the DCVG search mode is selected. At this time, in FIG. 4, the initial screen may be the DCVG search mode, but is not limited thereto.

The local presentation module 120 may display one or more DCVG selection information.

DCVG selection information may include search method switching selection information, control selection information, mode selection information, operation selection information, interrupter operation selection information, and GPS status display selection information.

The exploration method conversion selection information includes an ACVG exploration conversion mode, and the user can select the ACVG exploration conversion mode to switch the exploration method from the DCVG exploration mode to the ACVG exploration mode.

DCVG selection information is output as the search method switching selection information, and when the control selection information described later is a remote mode and the operation selection information described later outputs an operation stop of the rectifier 100, the exploration method switching selection information is activated. That is, the ACVG search switching mode may be activated when an operation stop of the rectifier 100 is output when a control selection described later is selected. In addition, the ACVG exploration conversion mode may be activated when PCM use is checked in the environment setting, but is not limited thereto. That is, if the ACVG exploration conversion mode is clicked after the exploration method conversion selection information is activated, the ACVG exploration mode screen may appear, but is not limited thereto.

The control selection information includes a local mode and a remote mode, and the user can select and control either the local mode or the remote mode. That is, the user may select one of a local mode in which the rectifier 100 is directly controlled in the field using the local display module 120 and a remote mode in which the rectifier 100 is controlled using the remote display module 210 .

When the remote mode is selected in the local display module 120, mode selection information, operation selection information, and interrupter operation selection information are deactivated in the local display module 120. That is, when the local mode is selected, direct control is possible through the local display module 120, and when the remote mode is selected, direct control is not possible through the local display module 120 and control is performed through the remote display module 210. can do.

Also, when the local mode is selected in the remote display module 210, mode selection information, operation selection information, and interrupter operation selection information are deactivated in the remote display module 210.

The mode selection information includes a manual mode and an automatic mode, and the user can perform mode selection by selecting either the manual mode or the automatic mode.

When the manual mode is selected, the output value of the DC output unit 131 can be adjusted.

When automatic mode is selected, the mode potential value can be adjusted. That is, when the automatic mode is selected, it means that the output value of the piping-type DC output unit 133 can be adjusted, and the piping-type DC output unit 133 can be controlled on the same screen as the DCVG selection information, but is limited thereto. It is not.

Operation selection information selects whether the rectifier 100 operates, such as operation execution or operation stop, and execution of the operation of the rectifier 100 is indicated as RUN in FIG. displayed as At this time, as described above, in order to switch from the DCVG mode to the ACVG mode, the ACVG mode can be executed only when the operation selection is changed to STOP.

In the interrupter operation selection information, the time of the interrupter 131a is set, and the operation of the interrupter 131a is selected.

The user can change the on/off time of the interrupter 131a and select whether to operate the interrupter 131a through the interrupter operation selection information.

At this time, if the on/off time of the interrupter 131a in FIG. 4 is clicked, a pop-up window for changing the time appears. When the START button is pressed, the interrupter (131a) operates, and when the STOP button is clicked, the operation is stopped.

In the GPS status display selection, the GPS according to the position of the rectifier 100 is displayed, and the GPS status display selection in which the SYNC Time is set is set.

In FIG. 4 , if the GPS is normally acquired, normal is displayed, and if the GPS is not acquired, it is displayed as abnormal.

In order to change the SYNC Time, GPS use must be checked in the environment settings to use it. In FIG. 4 , when SYNC Time is clicked, a pop-up window appears and the time can be changed, and the interrupter 131a automatically operates after the set time.

At this time, when the power of the rectifier 100 is turned off and then turned on again, the interrupter 131a must start. If the interrupter 131a is not operated at the beginning, the GPS state is not captured. Also, if the Clear button is pressed, 99:99:99 is set, and the operation of the interrupter 131a is not automatically executed.

In addition, the local display module 120 may further provide DCVG state information capable of displaying the current state of the rectifier 100 in addition to DCVG selection information selectable by the user.

At this time, as described above, DCVG selection information and DCVG state information may be displayed on the same screen, but are not limited thereto.

The DCVG status information may include information about the DC output voltage, DC output current, method potential, reference electrode, AC voltage, internal temperature of the rectifier 100, door open state, and communication state currently output from the rectifier 100. there is.

The communication state means to display the communication state between the rectifier 100 and the control terminal 200, and the reference electrode means to set or display the reference electrode used in the field.

When the door is closed, it is displayed as green closed, when open, it is displayed as red open, when communication is normal, it may be displayed as green normal, and when it is not, it may be displayed as red abnormal, but is not limited thereto.

At this time, the information that the user can select in the local display module 120 is not limited to what is shown in the description and drawings.

5 shows a screen of the local display module 120 in which the ACVG exploration mode is selected.

As described above, the initial screen of the local display module 120 is set to the DCVG exploration mode screen, and DCVG selection information is displayed. Then, when control selection information is selected and the rectifier 100 stops operating, it can be activated.

When the DCVG selection information selects the ACVG exploration conversion mode, the screen is converted to the ACVG mode screen.

On the ACVG screen, the local display module 120 may include search method switching selection information, mode selection information, and operation selection information as ACVG selection information.

The exploration method conversion selection information includes a DCVG exploration conversion mode, and the user can select the DCVG exploration conversion mode to switch the exploration method from the ACVG exploration mode to the DCVG exploration mode.

At this time, the DCVG exploration mode may be switched only when the ACVG operation state is operation stop, but is not limited thereto.

The mode selection information includes a current search mode, an ACVG(E) mode, and an ACVG(L) mode.

The current search mode is a mode used when searching for the position of a pipe.

ACVG(E) mode and ACVG(L) mode are modes used for cover exploration, and are options that change according to environmental characteristics such as soil or weather during cover exploration.

As described above in the DCVG selection information, the operation selection information means selecting whether to operate the rectifier 100 or not.

In addition, the local display module 120 may further provide ACVG state information capable of displaying the current state of the rectifier 100 in addition to ACVG selection information selectable by the user. The local display module 120 may provide information on AC output voltage, AC output current, temperature warning, voltage warning, and communication status currently output from the rectifier 100 .

The communication state means a communication state between the control module 140 and the AC output unit 132 .

Information selectable by the user in the local display module 120 is not limited to the description and illustration.

At this time, the local display module 120 may mean a GUI (Graphic User Interface), but is not limited thereto.

6 is a photograph showing the local display module 120 located on the outer surface of the rectifier 100.

7 is a photograph showing that the rectifier 100 is installed in the field.

The smart commutation system according to the present invention can be remotely controlled by the control terminal 200 . The control terminal 200 is a system capable of remotely controlling the rectifier 100 in a wireless/IOT manner, receives remote input information from a user, transmits it to the communication module 110 of the rectifier 100, and ) power, voltage, current and mode can be remotely controlled.

The control terminal 200 includes a remote display module 210 .

The remote display module 210 is a module through which the user can input remote input information, and selection information is input by the user.

The remote display module 210 transmits remote input information generated according to the selection information to the communication module 110, and the communication module 110 transmits the remote input information to the control module 140. Similar to the aforementioned local display module 120, the remote display module 210 provides selection information for the user to control the rectifier 100 and status information for displaying the state of the rectifier 100.

At this time, the remote display module 210 may mean a GUI (Graphic User Interface), but is not limited thereto.

8 shows a control screen of the remote display module 210 .

The remote display module 210 may include one or more selection information. DCVG selection information may include search method switching selection information, control selection information, mode selection information, operation selection information, interrupter operation selection information, and GPS status display selection information, and ACVG selection information may include search method switching mode information and mode selection information and action selection information.

Since selection information of the remote display module 210 is the same as selection information of the above-described local display module 120, a detailed description thereof is omitted.

However, unlike the local display module 120, the remote display module 210 may select and control one or more of the plurality of rectifiers 100. For example, referring to FIG. 8 , it is shown that the rectifier 100 can be controlled by inquiring the region where the rectifier 100 is located and the serial number of the rectifier.

In addition, in FIG. 8, DCVG status information capable of displaying the status of the rectifier 100 includes DC output voltage, DC output current, corrosion protection potential, reference electrode, AC voltage, internal temperature of the rectifier 100, Information on door open status and communication status can be provided, and information on AC output voltage, AC output current, temperature warning, voltage warning and communication status can be provided as ACVG status information.

Status information of the remote display module 210 is the same as that of the aforementioned local display module 120, so detailed description thereof is omitted.

2. Description of the control method of the smart rectification system

The rectifier 100 according to the present invention includes a piping-type DC output mode, a DCVG search mode, and an ACVG search mode. In the following method, the piping method DC output mode, DCVG search mode, and ACVG search mode in the rectifier 100, and each mode change will be described.

Referring to FIGS. 9 to 14 , a control method of the smart rectification system will be described.

Referring to FIG. 10, the piping method DC output mode will be described.

The piping method DC output mode is a mode that outputs DC values for the piping method performed by the external power rectifier.

Power supply to the rectifier 100 starts, and the piping type DC output mode is performed.

At this time, the power applied to the rectifier 100 may be applied from an external power source.

When power is applied to the rectifier 100 and the piped DC output mode is performed, the control module 140 checks the DC value of the piped DC output unit 133 .

The control module 140 confirms that the AC output unit 132 is off, and controls the piping-type DC output unit 133 to check the DC value of the piping-type DC output unit 133.

When local input information or remote input information input to the control module 140 includes a piping type DC output mode, or when information about the mode is not input to the control module 140, the control module 140 The rectifier 100 is controlled to perform the piping type output mode.

The control module 140 determines whether to change the mode from the piping-type DC output mode to one of the DCVG exploration mode and the ACVG exploration mode based on the input information.

Specifically, when the selection information transmitted to the control module 140 is the DCVG selection information, the DCVG search mode is controlled, and when the selection information is the ACVG selection information, the control module 140 is controlled to perform the ACVG search mode.

Referring to FIG. 11, a method of operating the smart rectification system in DCVG exploration mode will be described.

The on-off time of the interrupter 131a of the DC output unit 131 is set.

At this time, the user may set the on/off time of the interrupter 131a by selecting the interrupter operation selection information in the aforementioned local display module 120 and remote display module 210, but is not limited thereto.

The control module 140 sets the on-off time of the relay 131b of the DC output unit 131 to the on-off time of the interrupter 131a.

The control module 140 confirms that the AC output unit 132 is off.

At this time, the AC output unit 132 may already be in an off state in the aforementioned piping type DC output mode.

The control module 140 checks that the AC output unit 132 is off, and when the AC output unit 132 is off, operates the DC output unit 131 to perform DCVG detection.

At this time, DCVG exploration is performed according to the existing DCVG exploration method.

When the DCVG exploration is finished, the DC value of the piping-type DC output unit 133 is checked, and the aforementioned piping-type DC output mode can be performed again.

In addition, referring to FIG. 12, a control method in the case of malfunction of the interrupter 131a when the selection information includes the DCVG search mode will be described.

In order to detect the damage location of the pipe when diagnosing pipe safety DCVG, the interrupter 131a must be operated through the pipe with the DC voltage output signal of the rectifier.

At this time, the operating time of the interrupter 131a has a pulse period of at least 0.1 second and at most 10 seconds.

During the detection, the operator conducts the detection for several hours at a place several kilometers away from the rectifier. If the operation of the interrupter 131a is interrupted due to an unexpected situation, the detecting agent cannot normally proceed with the detection, and the problem of the interrupter 131a causes an inaccurate detection result. In this case, the person in charge of the area conducts the exploration again, resulting in a waste of time and manpower.

In order to solve this problem, the smart rectification system according to the present invention, when the interrupter 131a stops operating differently from the user control signal, the control module 140 resets the smart rectification system.

In addition, the control module 140 resets the most recent on-off time among the on-off times of the interrupter 131a and uses the most recent output voltage among the output voltages of the DC output unit 131 to perform DCVG search again. Start.

That is, when the interrupter 131a of the smart rectification system stops operating due to an unexpected situation or an abnormal situation occurs, the control module 140 primarily performs a system reset and then sets the interrupter 131a on-off time. A problem caused by interruption of the interrupter 131a during exploration can be solved by restoring the over output voltage (current).

At this time, when this situation occurs, a function of sending an SMS to the operator may be included through the interworking of the rectifier 100 and the control system 200, and the operator may conduct efficient DCVG exploration.

Referring to FIG. 13, a method of operating the smart rectification system in ACVG exploration mode will be described.

The control module 140 confirms that the DC output unit 133 is off.

The control module 140 turns off the DC output unit 133 when the DC output unit 133 is not turned off.

The voltage, current value, and output frequency ratio of the AC output unit 132 are input, the output value is calculated using the input value, and then the AC output unit 132 outputs the calculated output value.

At this time, the user may select mode selection information from the above-described local display module 120 and remote display module 210 and input the voltage, current value, and output frequency ratio of the AC output unit 132, but are limited thereto. it is not going to be

The control module 140 operates the AC output unit 132 and checks the DC value of the piping type DC output unit 133 to perform ACVG exploration. When the ACVG exploration is finished, the control module 140 controls the AC output unit 132 to be turned off and the DC output unit 131 to be turned on, thereby re-performing the piping type DC output mode.

In addition, a method of controlling the current value output of the rectifier 100 will be described with reference to FIG. 14 .

The control module 140 may control the current sensor to operate according to the sensed current value.

According to the established standard, the rectifier 100 has a maximum DC 60V/30A output.

Depending on the state of the city gas pipe, the rectifier 100 has different output voltages and currents for an effective method. There is also a case where the output current of the rectifier 100 is less than 2A of small power.

Since the rectifier 100 is designed to generate a maximum output current of 30A, it has limitations in monitoring and displaying an accurate value below 1A. Technically, the circuit that senses the current sets the error standard based on 30A, which results in not being able to measure properly in current measurement of less than 1A.

The rectifier 100 according to the present invention operates the relay 131b to measure a small current at more than 0A and less than 5A, and the rectifier 100 operates the relay 131b to measure a large current at more than 5A and less than 30A.

Accordingly, the rectifier 100 according to the present invention can precisely measure the output current even in the case of a small power of less than 2A.

At this time, operating the relay 131b so that the rectifier 100 measures a small current means using a sensor capable of measuring a small current, and operating the relay 131b so that the rectifier 100 measures a large current. To do means to use a sensor capable of measuring a large current, but is not limited thereto.

At this time, the rectifier 100 according to the present invention may measure a large current first after power is applied, and determine whether the output current of the rectifier 100 is less than 5A.

In the above, the present specification has been described with reference to the embodiments shown in the drawings so that those skilled in the art can easily understand and reproduce the present invention, but this is only exemplary, and those skilled in the art can make various modifications and equivalents from the embodiments of the present invention. It will be appreciated that embodiments are possible. Therefore, the scope of protection of the present invention should be defined by the claims.

100: rectifier
110: communication module
120: local display module
130: output module
131: DC output unit
131a: Interrupter
131b: relay
132: AC output unit
133: piping type DC output unit
140: control module
200: control terminal
210: remote display module

Claims (9)

As a smart rectification system for preventing and detecting damage in pipelines,
rectifier 100; and
A control terminal 200 located remotely from the rectifier 100 and including a remote display module 210 for transmitting remote input information to the rectifier 100;
The rectifier 100,
a communication module 110 receiving the remote input information from the control terminal 200;
a local display module 120 where local input information is generated;
An output module 130 including a DC output unit 131 outputting DC power, an AC output unit 132 outputting AC power, and a piping type DC output unit 133; and
Any one of the remote input information and the local input information is received, and the DC output unit 131 and the AC output unit 132 are turned on respectively according to either of the remote input information or the local input information ( a control module 140 that controls one of on) or off; including,
When selection information is input to the rectifier 100, the local display module 120 generates it as the local input information,
When selection information is input to the control terminal 200, the remote display module 210 generates it as the remote input information,
The selection information includes DCVG selection information and ACVG selection information,
The local display module 120 transmits the local input information to the control module 140, and the remote display module 210 transmits the remote input information to the control module 140 through the communication module 110. send to,
The control module 140 controls to turn off the DC output unit 131 and turn on the AC output unit 132 when any one of the remote input information and the local input information includes the ACVG selection information. do,
The control module 140 controls to turn off the AC output unit 132 and turn on the DC output unit 131 when any one of the remote input information and the local input information includes the DCVG selection information. doing,
smart commutation system.
According to claim 1,
The DCVG selection information,
exploration method conversion selection information including an ACVG exploration conversion mode;
control selection information including local mode or remote mode;
mode selection information including a manual mode for adjusting the output value of the DC output unit 131 and an automatic mode for adjusting the method potential value;
operation selection information including whether the rectifier 100 is operating;
Interrupter operation selection information including the on-off time of the interrupter 131a; and
GPS status display selection information including GPS and SYNC Time according to the position of the rectifier 100; including,
If the control selection information includes the remote mode, the mode selection information, the operation selection information, and the interrupter operation selection information are deactivated in the local display module 120;
If the control selection information includes the local mode, the mode selection information, the operation selection information, and the interrupter operation selection information are deactivated in the remote display module 210, and
When the DCVG selection information is output and the control selection information includes either a remote mode or a local mode, when the operation selection information outputs stopping the operation of the rectifier 100, the search method switching selection information is activated ,
smart commutation system.
According to claim 1,
The ACVG selection information,
exploration method conversion selection information including a DCVG exploration conversion mode;
mode selection information; and
Including; operation selection information for selecting whether or not to operate the rectifier 100;
smart commutation system.
According to claim 1,
The DC output unit 131 outputs 60V/30A, and the AC output unit 132 is standardized to output 80V/2A.
The rectifier 100 operates the relay 131b to measure a small current when the current output from the DC output unit 131 is greater than 0A and less than 5A,
The rectifier 100 operates the relay 131b to measure a large current when the current output from the DC output unit 131 is 5A or more and 30A or less.
smart commutation system.
A method for controlling the smart rectification system according to claim 1,
(a) operating the smart rectification system in a piped DC output mode;
(b) operating the smart rectification system in DCVG exploration mode; and
(c) operating the smart rectification system in ACVG exploration mode;
In step (a),
(a1) applying power to the rectifier 100;
(a2) checking the DC value of the piping type DC output unit 133; and
(a3) confirming that the AC output unit 132 is turned off and controlling the DC value of the piping type DC output unit 133; including,
Control method of smart rectification system.
According to claim 5,
In step (b),
Simultaneously with the step (a3),
(b1) setting the on-off time of the interrupter 131a of the DC output unit 131;
(b2) setting the on-off time of the relay 131b of the DC output unit 131 to the on-off time of the interrupter 131a set in step (b1);
(b3) confirming that the AC output unit 132 is off; and
(b4) checking the DC value of the pipe type DC output unit 133 by operating the DC output unit 131 and performing DCVG exploration; including,
Control method of smart rectification system.
According to claim 6,
In step (c),
Simultaneously with the step (a3),
(c1) confirming that the DC output unit 133 is off;
(c2) inputting voltage, current values and output frequency ratios to the AC output unit 132;
(c3) calculating an output value using the value input in step (c2) and then outputting the calculated output value through the AC output unit 132; and
(c4) checking the DC value of the piping type DC output unit 133 by operating the AC output unit 132 and performing ACVG exploration;
Control method of smart rectification system.
According to claim 7,
When the selection information is DCVG selection information, the step (b) is performed,
When the selection information is ACVG selection information, the step (c) is performed,
Control method of smart rectification system.
According to claim 6,
In step (b),
(b5) resetting the smart rectification system when the interrupter 131a stops operating differently from a user control signal;
(b6) resetting the latest on-off time among the on-off times of the interrupter 131a set in the step (b1) to the on-off time of the relay 131b in the step (b2); and
(b7) performing the step (b4) again using the most recent output voltage among the output voltages of the DC output unit 131 operated in the step (b4); further comprising,
Control method of smart rectification system.

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