KR101792734B1 - Device and method for controlling electrolytic protection - Google Patents

Device and method for controlling electrolytic protection Download PDF

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Publication number
KR101792734B1
KR101792734B1 KR1020160027234A KR20160027234A KR101792734B1 KR 101792734 B1 KR101792734 B1 KR 101792734B1 KR 1020160027234 A KR1020160027234 A KR 1020160027234A KR 20160027234 A KR20160027234 A KR 20160027234A KR 101792734 B1 KR101792734 B1 KR 101792734B1
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South Korea
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potential
value
predetermined
rectifier board
output
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KR1020160027234A
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Korean (ko)
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KR20170104317A (en
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배정효
김광근
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한국전기연구원
주식회사 태흥전기방식
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Priority to KR1020160027234A priority Critical patent/KR101792734B1/en
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
    • G01R29/12—Measuring electrostatic fields or voltage-potential
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F13/00—Inhibiting corrosion of metals by anodic or cathodic protection
    • C23F13/02—Inhibiting corrosion of metals by anodic or cathodic protection cathodic; Selection of conditions, parameters or procedures for cathodic protection, e.g. of electrical conditions
    • C23F13/04—Controlling or regulating desired parameters
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F13/00—Inhibiting corrosion of metals by anodic or cathodic protection
    • C23F13/02—Inhibiting corrosion of metals by anodic or cathodic protection cathodic; Selection of conditions, parameters or procedures for cathodic protection, e.g. of electrical conditions
    • C23F13/06—Constructional parts, or assemblies of cathodic-protection apparatus
    • C23F13/08—Electrodes specially adapted for inhibiting corrosion by cathodic protection; Manufacture thereof; Conducting electric current thereto
    • C23F13/22—Monitoring arrangements therefor
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
    • G01R19/16566—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F2213/00—Aspects of inhibiting corrosion of metals by anodic or cathodic protection
    • C23F2213/10—Controlling or regulating parameters

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Prevention Of Electric Corrosion (AREA)

Abstract

[0001] The present invention relates to an electric type control device, and more particularly, to an electric type control device, which is provided with a through-hole for allowing seawater to flow into the center of a body, at least one anode rod and a reference electrode, At least one rectifier board to which a positive terminal is connected at one end and a negative terminal is connected to an outer surface of the to-be-watermarked object to apply a predetermined method current, a power source device for supplying a predetermined power source to the rectifier board, And an external input signal for requesting the determination of polarization of the object to be pinched is received by a voltage sensor connected to a cathode terminal of the pendulum and a cathode terminal connected to an outer surface of the pendulum object to measure a potential difference between the reference electrode and the pendulum object A predetermined time from when the output of the rectifier board is turned off And a polarity determination unit for determining whether or not the inside of the object to be poled is polarized based on a potential value measured through the electric potential sensor after an elapse of a predetermined time.
Accordingly, it is possible to control the system potential of the pedestal object in real time while controlling it in the constant potential state, and it is possible to easily determine whether there is a system using a diagnostic command function using 100 mV polarization.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an electric-

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an electric control apparatus and a method thereof,

Generally, 'corrosion' is defined as' the substance reacts with the surrounding environment and the substance itself is altered or the property of the substance is altered. Most of the corrosion is caused by the electrochemical reaction due to electron withdrawal, It is called corrosion.

Conversely, the term 'method' refers to blocking or suppressing the escape of electrons or ions from gas pipelines, oil pipelines, water supply and sewer pipes, and other underground metal structures (hereinafter referred to as 'method objects'). The method used is a cathodic protection method, which is a kind of a method for suppressing anodic reaction, and is generally called an electric method.

As for the principle of the above electric method, corrosion of a metal occurs in a portion where current flows out through an electrolyte (soil, fresh water, seawater) on a metal surface, so that a direct current (a method current) The negative electrode reaction occurs on the metal surface, thereby preventing corrosion.

As a method for detecting corrosion, an electrochemical potential measurement method for determining the corrosion progress by measuring the electrochemical potential of a metal on the surface of a metal in the electrolyte is the most popular method.

The potential measurement method is a method of measuring the natural potential of a reference object electrode (Cu / CuSO 4) of a method object, which is a corrosion object, by connecting the object to be measured with a (+) terminal of a measuring instrument capable of measuring voltage And the reference electrode is connected to the (-) terminal, and the reference electrode is brought into contact with the surface of the upper surface of the workpiece to read the potential value. The readout value is compared with the method standard to determine whether the method object is in the state of the method. When using the -850 mV / CSE standard on the basis of the method, the potential of the object to be inspected is less than -850 mV (for example, 1000mV), it means that the object to be protected is corrosive.

Rectifiers have been used in the field of current methods as an electrical fixture to prevent corrosion of suspended objects. The rectifier for this method is a device that flows a constant DC current (method current) through the soil (or sea water) to the object to reduce the potential of the object to be measured to a predetermined standard value of -850 mV / CSE or less to be.

Conventional technology of the above-mentioned electric field has developed a corrosion monitoring apparatus which can be brought into a test box for checking the electric potential of an object in the late 1990's, During the measurement period, the system potential is read and stored by reading in the test box, and then the data is downloaded to the user's office by using the computer. The user then directly goes to the site In addition to the inconvenience of installing and collecting, there was no real-time monitoring function.

The on-line corrosion monitoring system, which was developed in 1998 to monitor the potential of the object in real time, had only a simple method potential monitoring function. Since it uses RS-485 wired communication, it is difficult to install the communication line, Within).

In addition, switching type electric rectifiers introduced in Korea in 1999 improved efficiency and control characteristics compared with existing SCR rectifiers, but they did not have remote monitoring and control functions because they operate only locally because they do not have communication function in analog form.

Conventional conventional products have problems in that active corrosion control and maintenance are difficult due to simple monitoring and restriction of communication distance.

KR 10-0311631 B1 KR 10-0360200 B1

SUMMARY OF THE INVENTION It is an object of the present invention to provide an electric control device and method for preventing corrosion of a pedestrian object by remotely controlling the electrostatic potential while monitoring the polarization state of the pedestrian object in real time.

According to an aspect of the present invention, there is provided an electric control apparatus comprising: a pedestal having a through hole for allowing seawater to flow into a center of a body, at least one cathode rod and a reference electrode being installed therein; At least one rectifier board having a positive terminal connected to one end of at least one of the at least one positive electrode and the negative electrode terminal connected to an outer surface of the inclined object to apply a predetermined current, A potential sensor for measuring a potential difference between the reference electrode and the object to be protected, the object being connected to an anode terminal at one end of the reference electrode and having a cathode terminal connected to an outer surface of the object, The output of the rectifier board is turned off It characterized in that it comprises after a set time period elapses from a point on the basis of the voltage value measured by the potential sensor determines whether the polarization to determine the polarization of the internal parts of the object method.

According to another aspect of the present invention, there is provided an electric type control method including: an object to be sanitized having a through hole for allowing seawater to flow into the center of the body, in which at least one positive electrode and a reference electrode are installed; At least one rectifier board connected to one end of one of the plurality of electrodes and the outer surface of the object to be measured to apply a predetermined method current and an electric potential sensor for measuring a potential difference between the reference electrode and the object to be covered, A method of controlling an electric system using an apparatus, the method comprising: receiving an external input signal requesting polarization state of the object to be poled; detecting whether the rectifier board is on or off, , Switching the output of the rectifier board to an off state, Measuring a potential value through the potential sensor after a predetermined time elapses from the time when the output is turned off and determining whether the polarization of the inside of the object is based on the measured potential value do.

According to the present invention, it is possible to control the system potential of a subject in a step-by-step manner while controlling the system potential in a real-time manner, and it is also possible for a novice user to easily determine whether there is a system by using a diagnostic command function using 100 mV polarization.

Also, according to the present invention, the number of the potential sensors and the number of the rectifier boards can be variously combined according to the design conditions of the user or the system designer, thereby reducing manufacturing cost and cost.

Also, according to the present invention, the error rate can be reduced by using only the pure polarization potential of the metal from which the voltage drop due to the electrolyte existing between the reference electrode and the calipers is removed.

1 is a block diagram showing the configuration of an electric control apparatus according to an embodiment of the present invention,
FIG. 2 is a graph showing a time-series potential measured by the potential sensor according to the on-off state of the rectifier board of FIG. 1,
3 is a schematic configuration diagram of the rectifier board of Fig. 1,
Fig. 4 is a photograph showing an example of actual implementation of the rectifier board of Fig. 1,
FIG. 5 is a photograph showing an actual implementation example in which the remaining components except for the potential sensor of FIG. 1 are disposed inside one enclosure,
6 is a flowchart showing an electric control method according to an embodiment of the present invention,
7 is a view showing a main screen of a control program for controlling the electric control apparatus of Fig. 1,
8 is a view showing a setting screen of a control program for controlling the electric control apparatus of Fig. 1,
9 is a view showing a detailed information display screen for each module of the control program for controlling the electric control apparatus of FIG. 1,
10 is a diagram showing an operation setting screen for each module of a control program for controlling the electric control apparatus of FIG.

The foregoing and other objects, features and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. Like reference numerals refer to like elements throughout the specification.

FIG. 1 is a block diagram showing a configuration of an electric control apparatus according to an embodiment of the present invention. FIG. 2 is a graph showing a time-series electric potential value measured by an electric potential sensor according to the ON / OFF state of the rectifier board of FIG. FIG. 3 is a schematic structural view of the rectifier board of FIG. 1, FIG. 4 is a photograph showing an actual implementation of the rectifier board of FIG. 1, and FIG. 5 is a cross- As shown in Fig.

Hereinafter, an electric control apparatus according to an embodiment of the present invention will be described with reference to the drawings.

1, an electric control apparatus according to an embodiment of the present invention includes a pedestal object 100, a rectifier board 200, a power supply 300, a potential sensor 400, a polarization determination unit 500, A controller 600, and a communication unit 700.

The bodyside object 100 has a through hole for allowing the seawater to flow into the center of the body, and at least one anode rod 110 and a reference electrode 120 are installed therein.

Here, the anode rod 110 may be formed of titanium (Ti) or mixed metal oxide (MMO), and the reference electrode 120 may be formed of zinc (Zinc) or copper sulfate (CuSO 4 ).

At this time, one end of the anode rod 110 and the reference electrode 120 may be disposed as an insulator and attached to the inner surface of the hinging object 100, but the spacing distance may be maintained.

Although the number of the anode rods 110 and the number of the reference electrodes 120 is not limited to the number of the anode rods 110 and the number of the reference electrodes 120, It is possible.

At least one rectifier board 200 is provided and a cathode terminal is connected to one end of the anode rod 110 and a positive terminal is connected to an outer surface of the blocking object 100 to apply a predetermined current .

In this case, a 'method' is performed in which the cathodic current applied to the anode rod 110 flows into the outer surface of the hiding object 100 through the electrolytic seawater so that a cathodic reaction occurs on the outer surface of the hinging object 100 .

For example, when a method current is applied to the rectifier board 200, an oxidation reaction occurs in the anode rod 110, a reduction reaction occurs in the reference electrode 120, and electrons emitted from the anode rod 110 pass through the reference electrode 120, The 'method' is performed.

Here, the rectifier board 200 measures the output potential of the rectifier board 200, and if the measured output potential value is greater than a predetermined target value, increases the PWM output width until the output potential value reaches the target value, If the output potential value is smaller than the target value, the PWM output width can be reduced until the output potential value reaches the target value.

Further, the rectifier board 200 may reduce the PWM output width when the output potential value is larger than the target value and the voltage value measured at the anode of the rectifier board exceeds a predetermined limit voltage value.

The rectifier board 200 includes a 2-port circuit 210 and a control module 220 as shown in FIG. 3. The 2-port circuit 210 includes a capacitor C, a switch S, And is configured to receive DC 24 V power from the power supply unit 300 to be described later and to output 10 V / 15 A through an output terminal. The control unit 300 includes an inductor L, a diode D1, a relay circuit, (CAN) for CAN communication with a control program, which will be described later, and a control unit (not shown) for controlling the operation of the microcomputer (MCU) A gate driver (GATE DRIVER) for transmitting a gate signal for driving the semiconductor memory (S), a converter (A / D Convert) for converting an analog signal into a digital signal, a JTAG , A display for outputting light to the LED or the 7-segment (7-SEG) Preferably comprises a (Switch), and state is the actual implementation of this is shown in Figure 4.

The power supply unit 300 supplies a predetermined power to the rectifier board 200.

For example, when the rectifier board 200 is configured as shown in FIG. 3, the power supply 300 can supply DC 24 V power to the rectifier board 200.

The potential sensor 400 has a negative terminal connected to one end of the reference electrode 120 and a positive terminal connected to the outer surface of the sensing object 100 to connect the reference electrode 120 and the sensing object 100 Is measured.

For example, referring to FIG. 2, the potential value measured by the potential sensor 400 maintains a constant voltage value (V 1 ) when the rectifier board 200 maintains the OFF state for a long time (11) And when the rectifier board 200 is switched from the OFF state to the ON state at the first time point t 1 , the waveform 12 of the sudden voltage drop (IR drop) is momentarily displayed for a short period of time If after time, this shows a waveform 13 which gradually decreases with the passage, the rectifier board 200, the second switch at a time point on (oN) to (t 2) state to an off (oFF) state, instantaneously for a short time The waveform 14 having a large potential rise is displayed. The waveform 15 gradually decreases in width as time elapses and then maintains a constant value V 1 at a certain point in time.

That is, according to the present invention, the electric-type control apparatus according to the embodiment of the present invention is a type in which the electric potential sensor 400 and the rectifier board 200 are separated from each other, And the number of rectifier boards can be variously combined. Therefore, compared with the conventional method of configuring the potential sensing circuit and the rectifier output board on one board to meet only the specific field conditions, three reference electrode sensing circuits A standardized rectifier output board with a standardized potential sensor board and a 5-channel DC output board with a 1A can be manufactured in large quantities, which can reduce manufacturing costs, thereby significantly reducing manufacturing costs.

The polarity determination unit 500 determines whether the polarity of the subject 100 is polarized or not when the external input signal is received from the potential sensor 100 after a predetermined time elapses from when the output of the rectifier board 200 is turned off 400 based on the electric potential value measured through the first and second electrodes.

At this time, the external input signal may be a control signal received from an external device equipped with a control program for controlling the electric control apparatus according to the present invention. In this case, the communication unit 700, which will be described later, can receive a predetermined control signal from the external device.

For example, when the user selects one of the first mode command requesting the precise diagnosis of polarization of the pedestrian 100 and the second mode command requesting the simple diagnosis of the polarization, through the control program In case of input, a control signal instructing execution of the corresponding process is received.

Here, when the communication unit 700 receives the control signal corresponding to the second mode command and receives the control signal, the polarity determination unit 500 determines whether the polarization state of the rectifier board 200 has elapsed since the output of the rectifier board 200 was turned off The second difference value is calculated by calculating the difference between the potential value measured through the potential sensor 400 and the previously stored natural potential value and if the second difference value is less than the predetermined threshold value, If the second difference value exceeds the threshold value, it can be determined that polarization does not occur in the method object 100.

For example, the pre-stored spontaneous potential value is +50 mV / Zn when the reference electrode 120 is composed of zinc and -850 mV / CSE when the reference electrode 120 is composed of copper sulfate (CuSO 4 ) .

At this time, predetermined for the predetermined time rectifier board 200 on the graph shown in Figure 2 is turned on (ON) while switch state to an off (OFF) state to be as close as possible to the instantaneous point in time (t 2) elevated the potential at the Time, and may be set to, for example, 250 ms.

On the other hand, when the communication unit 700 receives the control signal corresponding to the first mode command and receives the control signal, the polarity determination unit 500 determines whether or not the first predetermined time from the time when the output of the rectifier board 200 is turned off A second potential measured through the potential sensor 400 after a lapse of a second time greater than the predetermined first time from the turned-off time, and a second potential measured through the potential sensor 400, And determines that polarization has occurred in the pedestal object (100) if the first difference value is less than the predetermined threshold value, and determines that polarization has occurred in the pedestal object (100) if the first difference value exceeds the threshold value It can be determined that polarization does not occur in the object 100.

At this time, the first time is set to a predetermined time that allows the rectifier board 200 to be brought close to the instant when the potential of the rectifier board 200 is instantaneously changed while the rectifier board 200 is switched from the ON state to the OFF state 2, the rectifier board 200 is switched from the ON state to the OFF state on the graph shown in FIG. 2, the potential is momentarily increased, and then the rising width is gradually decreased, For example, the first time is set to 250 ms, and the second time is set to 250 ms, and the second time is set to a predetermined time 48 hours.

With regard to the characteristics of the polarization determination unit 500, most of the electric industry uses the potential value of the object to be measured with respect to the reference electrode in determining the presence or absence of corrosion, as well as the pure polarization potential of the metal, There is a problem in that an error is generated when determining whether or not the system is in accordance with the measurement including the IR voltage drop due to the electrolyte (sea water, water, soil, etc.) existing between the electrodes of the electric control system 500), it can reduce the error rate by using the polarization potential that real-time eliminates the IR voltage drop. In case of non-application, it notifies the user in real time through the control program and network connected app. It is possible to prevent it certainly.

The controller 600 senses the on / off state of the rectifier board 200 when the external input signal is received and turns off the output of the rectifier board 200 when the rectifier board 200 is detected to be on do.

In addition, the controller 600 may switch the output of the rectifier board 200 to the on state after a predetermined time has elapsed from the time when the polarization determination unit 500 determines that polarization is completed.

For example, the preset time may be set within a range of 5 minutes to 10 minutes.

The communication unit 700 receives a predetermined control signal from an external device equipped with a control program for controlling the above-described electric control device according to the present invention.

In this regard, Fig. 7 is a view showing a main screen of a control program for controlling the electric control apparatus of Fig. 1, Fig. 8 is a drawing showing a setting screen of a control program for controlling the electric control apparatus of Fig. 1 And FIG. 9 is a view showing a detailed information display screen for each module of the control program for controlling the electric control apparatus of FIG. 1, and FIG. 10 is a flowchart showing a detailed operation of each module of the control program for controlling the electric control apparatus of FIG. Fig.

The control program may be developed as a window program as shown in FIGS. 7 to 10 using Visual C # as an electrical rectifier operating program.

Hereinafter, a method of controlling the electric control apparatus according to an embodiment of the present invention using the control program will be described with reference to FIGS. 7 to 10. FIG.

7, the output voltage VOLT, the output current CURR, the method potential CP, and the output voltage VREF are displayed as operation states of a maximum of six rectifier modules (five channels) through the main screen of the control program, The 'ERROR' tab located at the top of the main screen displays 'error indication' indicating the error state of the operating state of the rectifier system, As shown in FIG.

Show error Errors and warnings - No error UCP Under Cathodic Protection Warning.
The channel continues to operate OCP Over Cathodic Protection Warning.
The channel continues to operate OV Over Voltage Error
Channels with overvoltage faults stop OC Over Current Error
Channels with overcurrent fault OT Module Over Temperature Error
Stop all 5 channels ODC DC Overvoltage (Over DC Voltage) Error
Stop all 5 channels UDC Under DC Voltage Error
Stop all 5 channels OLF Output Line Fault (Output Line Fault)

At this time, if each module of the main screen is selected, detailed information about the operation state of the corresponding module can be examined. If a gear-shaped picture at the upper left of the window corresponding to each module is selected 9, and when 'SETUP' at the lower left of the main screen is selected, a screen for setting the operation for the module, that is, a module-specific detailed information display screen as shown in FIG. 9, The setting screen is displayed.

Next, as shown in FIG. 8, the setting screen is a screen for inputting a set value commonly applied to all six modules at a maximum, wherein the type of the reference electrode is selected by selecting one of the types of reference electrodes If you select it, it will automatically input the method potential value. If you input the type of reference electrode directly, you can input the method potential value yourself. And you can input the method potential value by using the overdrive, , The set value of the overcurrent protection function can be input, the use of the 100mV polarization function can be set, and the check box for setting whether to use the module installed in the rectifier system is included.

Specifically, input the potential value of the reference electrode used in the electric rectifier in the "CP Potential" input field, input the over-potential value of the reference electrode in the "Over Protection" input column, Input the maximum allowable voltage value of the rectifier output in the "Over Voltage" input field and the maximum allowable output voltage of the rectifier output in the "Over Current" input field, Enter the current value, enter the number of modules installed in the "Number of Modules" field, select whether to use the 100mV polarization function in the "100mV Polarization" field, and in the "# of Display Module" The number of modules to be displayed simultaneously can be selected. For example, the basic setting may be such that two pieces of module information are displayed as shown in FIG. 7, but up to six pieces of module information may be displayed simultaneously as shown in FIG.

Next, as shown in FIG. 9, the detailed information display screen for each module is displayed on the main screen shown in FIG. 7, and displays status information of the corresponding module when selecting a module to view detailed information. State, operation mode, output voltage, output current, method potential and temperature information are displayed. At this time, if the arrow picture at the bottom of the module detailed information display screen is selected, the screen is switched to the previous or next module, and when the 'MAIN' is selected, the screen returns to the main screen.

6 is a flow chart illustrating an electrical control method according to an embodiment of the present invention.

As described above, the electric control method according to an embodiment of the present invention includes a through hole for allowing seawater to flow into the center of the body, at least one anode rod 110 and a reference electrode 120 installed therein At least one rectifier board 200 connected to one end of at least one of the at least one anode rod 110 and the external surface of the object 100 to apply a predetermined current, And an electric potential sensor 400 for measuring a potential difference between the reference electrode 120 and the calming object 100. [

Hereinafter, an electric control method according to an embodiment of the present invention will be described with reference to FIG.

First, an external input signal for requesting the determination of polarization of the hinged object 100 is received (S10).

Here, the external input signal may be a control signal received from an external device equipped with a control program for controlling the electric control apparatus according to the present invention.

For example, the user selects a command of either a first mode command for requesting a precise diagnosis of polarization of the pedestrian 100 or a second mode command for requesting a simple diagnosis of the polarization, through a control program In case of input, a control signal instructing execution of the corresponding process is received.

Next, the on / off state of the rectifier board 200 is sensed (S20). When the rectifier board 200 is detected as being on, the output of the rectifier board 200 is turned off (S20).

That is, in the electric control method according to the present invention, it is assumed that the rectifier board 200 is on at the time when the external input signal is received in step S10. If the rectifier board 200 is detected as off, The process is terminated without performing the steps.

Next, a potential value is measured through the potential sensor 400 after a predetermined time has passed since the output of the rectifier board 200 is turned off (S40).

At this time, predetermined for the predetermined time rectifier board 200 on the graph shown in Figure 2 is turned on (ON) while switch state to an off (OFF) state to be as close as possible to the instantaneous point in time (t 2) elevated the potential at the Time, and may be set to, for example, 250 ms.

Next, based on the potential value measured in the step S40, it is determined whether or not the inside of the subject to be covered is polarized (S50).

If it is determined in step S40 that the external input signal received in step S10 is a control signal corresponding to a second mode command for requesting a simple diagnosis of polarization of the pedestrian 100, Calculating a second difference value by calculating a difference between the measured potential value and a previously stored natural potential value and determining that polarization has occurred in the subject if the second difference value is less than a predetermined threshold value, Exceeds the threshold value, it can be determined that polarization does not occur in the subject.

If the external input signal received in step S10 is a control signal corresponding to a first mode command requesting precise diagnosis of whether or not the pedestrian 100 is polarized, the determining step S50 may be performed in step S40 The first electric potential value is measured through the electric potential sensor 400 after a predetermined first time elapses from the time when the output of the rectifier board 200 is turned off, A second difference value may be calculated by calculating a difference between the first and second electric potential values by measuring a second electric potential value through the electric potential sensor after a large second time has elapsed.

In this case, if the first difference value is less than a predetermined threshold value, it is determined that polarization has occurred in the subject, and if the first difference value exceeds the threshold value, it is determined that polarization does not occur in the subject do.

At this time, predetermined for the first time rectifier board 200 on the graph shown in Figure 2 is turned on (ON) while switch state to an off (OFF) state to be as close as possible to the instantaneous point in time (t 2) elevated the potential at the 2, the rectifier board 200 is switched from the ON state to the OFF state on the graph shown in FIG. 2, the potential is instantaneously increased, and then the rising width is gradually decreased, Is preferably set to a time at which a constant value is maintained, that is, a predetermined time to reach a natural potential, for example, the first time is set to 250 ms The second time may be set to 48 hours.

Next, the output of the rectifier board 200 is turned on (S60) after a predetermined time has elapsed from the end of the determination of the polarity by the step S50.

For example, the preset time may be set within a range of 5 minutes to 10 minutes.

Thus, according to the present invention, it is possible to control the system potential of the subject in a step-by-step manner while monitoring in real time, and it is possible to easily determine whether there is a system using a diagnostic command function using 100 mV polarization .

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments.

100: Method object 101: Insulator
110: anode rod 120: reference electrode
200: rectifier board 210: two-port circuit
220: control module 300: power supply unit
400: potential sensor 500: polarization determination unit
600: controller 700: communication unit

Claims (12)

The holes are such that the seawater flows into the central body formed, at least one anode rod and the inner zinc (Zn) and copper sulfate (CuSo 4) of which one is a reference electrode is installed consisting method object;
At least one rectifier board having a cathode terminal connected to one end of any one of the at least one anode rod and a cathode terminal connected to the outer surface of the object to apply a predetermined current;
A power supply for supplying a predetermined power to the rectifier board;
A potential sensor connected to an anode terminal of one end of the reference electrode and connected to a positive terminal of the pedestal to measure a potential difference between the reference electrode and the pedestrian;
A first mode command for requesting a precise diagnosis of whether or not the subject is polarized from an external device equipped with a predetermined control program as an external input signal for requesting the determination of polarization of the subject, A communication unit for receiving a control signal for instructing execution of a process corresponding to any of the requesting second mode commands; And
A polarity determination unit for determining whether or not the inside of the object to be poled is determined based on a potential value measured through the potential sensor after a predetermined time elapses from the time when the output of the rectifier board is turned off when the external input signal is received And a determination unit,
The polarization determination unit may determine,
When the user receives the control signal corresponding to the first mode command through the control program and receives the control signal through the control program, after the first predetermined time elapses from the time when the output of the rectifier board is turned off, Calculating a first difference value by calculating a difference between a first potential value and a second potential value measured through the potential sensor after a second time that is longer than a predetermined first time has elapsed from the time point when the first potential is turned off, 1 < / RTI > difference is less than or equal to a predetermined threshold value, it is determined that polarization is generated in the subject, and if the first difference value exceeds the threshold, it is determined that no polarization occurs in the subject,
When the user receives the control signal corresponding to the second mode command through the control program and receives the control signal through the control program, the control signal is measured through the potential sensor after a predetermined third time elapses from the time when the output of the rectifier board is turned off A second difference value is calculated by calculating a difference between one potential value and a previously stored natural potential value, and if the second difference value is less than a predetermined threshold value, it is determined that polarization has occurred in the subject, And determines that no polarization occurs in the subject when the threshold value is exceeded. delete delete The method according to claim 1,
And a controller for detecting an on / off state of the rectifier board when the external input signal is received and switching the output of the rectifier board to an off state when the rectifier board is detected to be on, Electric control device. 5. The method of claim 4,
The controller comprising:
And switches the output of the rectifier board to the on state after a predetermined time has elapsed from the end of the determination of the polarization. The method according to claim 1,
The rectifier board includes:
And when the measured output potential value is greater than a predetermined target value, the PWM output width is increased until the output potential value reaches the target value. When the output potential value is smaller than the target value, And decreases the PWM output width until the output potential value reaches the target value. The method according to claim 6,
The rectifier board includes:
And decreases the PWM output width when the output potential value is greater than the target value and the voltage value measured at the anode of the rectifier board exceeds a predetermined limit voltage value. delete Wherein at least one anode rod and a reference electrode formed of one of zinc (Zn) and copper sulfate (CuSo 4 ) are provided in the through hole for allowing the seawater to flow into the center of the body, At least one rectifier board connected to one end of one of the plurality of electrodes and the outer surface of the object to be measured to apply a predetermined method current and an electric potential sensor for measuring a potential difference between the reference electrode and the object to be covered, A method of controlling an electric system using an apparatus,
Receiving an external input signal requesting to determine whether or not the object to be poled is polarized;
Detecting an on / off state of the rectifier board and switching the output of the rectifier board to an off state when the rectifier board is detected to be on;
Measuring a potential value through the potential sensor after a predetermined time elapses from the time when the output of the rectifier board is turned off; And
And determining whether or not the inside of the object to be poled is polarized based on the measured potential value,
Wherein the external input signal includes a first mode command for requesting a precise diagnosis of polarization of the object to be inspected from an external device equipped with a control program for controlling the electric control apparatus, And a control signal for instructing execution of a process corresponding to any one of the first mode command, the second mode command,
Wherein the measuring step comprises:
When a user receives a control signal corresponding to the first mode command through the control program and receives the control signal, the control unit controls the first and second mode commands to be transmitted through the potential sensor after a predetermined first time elapses from the time when the output of the rectifier board is turned off. 1 potential value is measured and a second potential value is measured through the potential sensor after a second time period which is longer than the predetermined first time period elapses from the time point when the power is turned off,
Wherein the determining step comprises:
A first difference value is calculated by calculating a difference between the first potential value and the second potential value when the user receives and receives the control signal corresponding to the first mode command through the control program, 1 < / RTI > difference is less than or equal to a predetermined threshold value, it is determined that polarization is generated in the subject, and if the first difference value exceeds the threshold, it is determined that polarization does not occur in the subject,
When the user receives the control signal corresponding to the second mode command through the control program and receives the control signal through the control program, the control signal is measured through the potential sensor after a predetermined third time elapses from the time when the output of the rectifier board is turned off A second difference value is calculated by calculating a difference between one potential value and a previously stored natural potential value, and if the second difference value is less than a predetermined threshold value, it is determined that polarization has occurred in the subject, And when it is determined that the threshold value is exceeded, it is determined that polarization does not occur in the subject. delete delete 10. The method of claim 9,
Further comprising switching an output of the rectifier board to an on state after a predetermined time has elapsed from the time when the determination of polarization is completed.
KR1020160027234A 2016-03-07 2016-03-07 Device and method for controlling electrolytic protection KR101792734B1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101497585B1 (en) * 2013-11-12 2015-03-02 코렐테크놀로지(주) Rectifier module control device of cathodic protection system for condenser

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