JP2019128328A - Corrosion management device and method for managing corrosion - Google Patents

Abstract

To provide a corrosion management device that can determine whether a radiator is to be washed on the basis of the measurement value related to the corrosion property acquired from a corrosive environmental sensor attached to the radiator.SOLUTION: The corrosion management device according to an embodiment includes: a corrosive environment sensor, attached to the surface of a transformer having a radiator, the sensor measuring the corrosion property in the environment in which the transformer is set; a washing necessity determination unit for determining whether the radiator needs to be washed on the basis of the measured value of the corrosive environment sensor and a management value; and a washing determination result output unit for outputting the result of determination by the washing necessity determination unit.SELECTED DRAWING: Figure 1

Description

  Embodiments described herein relate generally to a corrosion management apparatus and a corrosion management method.

  In order to increase the cooling efficiency, the transformer radiator needs to have a large surface area, and is characterized in that the material and the thickness of the coating film are optimized. On the other hand, due to such characteristics, the radiator is likely to be corroded, and the coating film may be deteriorated by the corrosion, and a hole may be formed in the material constituting the radiator. In the unlikely event that a hole is opened, leakage of the cooling medium or the like may lead to failure of the transformer. In addition, the distance between the fins of the radiator may be so narrow that even visual confirmation may not be possible for the fins installed at the back of the gap.

  When a transformer radiator with such characteristics and problems is installed outdoors such as near the coast, the sea salt adhering to the radiator gets wet due to rain or condensation, causing the coating film to deteriorate and rust. Therefore, it is necessary to periodically clean the radiator. However, the amount of sea salt adhesion fluctuates depending on the season, and there is a problem that it is difficult to visually confirm the state of deterioration and to determine the necessity of cleaning.

JP 2017-40470 A

  It is an object of the present invention to provide a corrosion management device and a corrosion determination method for determining whether or not a radiator needs to be cleaned based on a measured value relating to corrosivity acquired from a corrosive environment sensor attached to a radiator.

  The corrosion management device according to the present embodiment is attached to the surface of a transformer having a radiator, and measures the corrosiveness in the installation environment of the transformer, the corrosion environment sensor, the measurement value of the corrosion environment sensor, and the management value And a cleaning necessity determination unit that determines whether or not the radiator needs to be cleaned, and a cleaning determination result output unit that outputs the determination result of the cleaning necessity determination unit. .

  In the corrosion management method according to the present embodiment, the corrosion environment sensor attached to the surface of the transformer having a radiator measures the corrosivity in the installation environment of the transformer, and the cleaning necessity determination unit includes the corrosion The process of determining whether the radiator needs to be cleaned based on the measurement value of the environment sensor and the control value, and the cleaning determination result output unit outputs the determination result of the cleaning necessity determination unit And a step of performing.

The block diagram explaining the whole structure of the corrosion management apparatus which concerns on 1st Embodiment. The figure which shows an example of the specific structure of the washing | cleaning determination result notification part in the corrosion management apparatus of FIG. The figure which shows the flowchart explaining an example of the corrosion management process performed with the corrosion management apparatus of FIG. The figure which shows the flowchart explaining another example of the corrosion management process performed with the corrosion management apparatus of FIG. The block diagram explaining the whole structure of the corrosion management apparatus which concerns on 2nd Embodiment. The figure which shows an example of the specific structure of the washing | cleaning determination result notification part and the maintenance determination result notification part in the corrosion management apparatus of FIG. The figure which shows the flowchart explaining an example of the maintenance management process performed with the corrosion management apparatus of FIG. The block diagram explaining the whole structure of the corrosion management apparatus which concerns on 3rd Embodiment. The block diagram explaining the whole structure of the corrosion management apparatus which concerns on 4th Embodiment.

  Hereinafter, a corrosion management device and a corrosion determination method according to an embodiment will be described with reference to the drawings. In the following description, components having substantially the same function and configuration are given the same reference numerals, and redundant description will be made only when necessary.

First Embodiment
FIG. 1 is a diagram illustrating an overall configuration of a corrosion management device 1 according to the first embodiment. As shown in FIG. 1, the corrosion management apparatus 1 according to this embodiment includes a corrosion environment sensor 10, a controller 20, a cleaning determination result notification unit 30, and a reset input unit 32.

  The corrosion environment sensor 10 is a sensor that measures the corrosiveness of the environment in which the transformer TR having the radiator RD is installed. For example, the corrosion environment sensor 10 is composed of an ACM (Atomospheric Corrosion Monitor) type corrosion sensor which is a kind of electrochemical corrosion current sensor, and the severity of corrosion against the environment in which the transformer TR is installed is electrically measured. To measure. A general ACM type corrosion sensor is composed of an insulating paste provided on the metal to be measured and a conductive paste provided on the insulating paste, and the metal to be measured and the conductive paste And a voltage is applied between them. When the ACM-type corrosion sensor is exposed to the atmosphere, a thin water film is formed between the metal to be measured and the conductive paste due to rainfall or condensation, and galvanic current flows. This galvanic current is also called corrosion current, and in the present embodiment, the current value of this corrosion current is input to the controller 20 as a measurement value.

  If the environment where the transformer TR is installed is a highly corrosive environment where the radiator RD is easily corroded, a larger corrosive current flows, and conversely, a low corrosive environment where the radiator RD is difficult to corrode. For example, a large corrosion current does not flow. That is, in the present embodiment, it can be said that the radiator RD is more likely to be corroded as the measured value input to the controller 20 as the corrosion current is higher.

  Further, the installation position of the corrosion environment sensor 10 is arbitrary, or in the present embodiment, provided at the lower part of the transformer TR. This is generally because the condensation of the transformer TR tends to occur in the lower part, so by providing the corrosion environment sensor 10 in the lower part of the transformer TR, the corrosiveness of the installation environment of the transformer TR can be measured more properly It is because it is thought that it can do.

  The controller 20 is configured by, for example, a personal computer, a tablet terminal, a dedicated application specific integrated circuit (ASIC), or the like. In this embodiment, the controller 20 is, for example, a storm-storm type box housed inside a building provided near the place where the transformer TR is installed, or adjacent to the transformer. It is stored inside. Although described later in detail, the controller 20 is configured to include a cleaning necessity determination unit 40, a control value holding unit 42, a cleaning determination result output unit 44, and a reset unit 46. The cleaning necessity determination unit 40 includes a counter 48.

  The cleaning determination result notifying unit 30 outputs the determination result as to whether or not the radiator RD of the transformer TR needs to be cleaned, which is output from the cleaning determination result output unit 44 of the controller 20, to the administrator of the transformer TR. Notice. The cleaning determination result notification unit 30 can be configured by, for example, a warning sound generator that emits a warning sound when the radiator RD needs to be cleaned, or a light emitting device whose lamp emits light. The administrator cleans the radiator RD in the transformer TR when the cleaning determination result notifying unit 30 notifies that the radiator RD needs to be cleaned. Generally, the radiator RD is washed with a considerable amount of water to wash out the sea salt adhering to the surface of the radiator RD. Then, after the cleaning is completed, the administrator operates the reset input unit 32 to input a reset to the reset unit 46 of the controller 20. In the present embodiment, the reset input unit 32 includes, for example, a reset button or the like, and the administrator presses the reset button after the cleaning is completed. Thereby, the cleaning determination result by the cleaning determination result notifying unit 30 is reset, and the counter 48 is also reset.

  FIG. 2 is a diagram illustrating an example of the cleaning determination result notification unit 30 in the present embodiment. As shown in FIG. 2, in one example in the present embodiment, the cleaning determination result notification unit 30 includes a plurality of light emitting devices 34a, 34b,. When the first level of cleaning described below is required, the light emitting device 34a emits light, and when the second level of cleaning is required, the light emitting device 34b emits light and the Nth level of cleaning required. In the case, the light emitting device 34n emits light.

  Next, the corrosion control process executed by the controller 20 of the corrosion control device 1 will be described based on FIG. FIG. 2 is a diagram illustrating a flowchart for explaining the contents of the corrosion management process, and may be realized by software in the controller 20 or may be realized by hardware. When the corrosion management process is realized as software, the cleaning necessity determination unit 40, the control value holding unit 42, the cleaning judgment result output unit 44, and the reset unit 46 are realized by software, and the corrosion management process is performed. Is realized by hardware, the cleaning necessity determination unit 40, the management value holding unit 42, the cleaning determination result output unit 44, and the reset unit 46 are realized by hardware.

  As illustrated in FIG. 3, the cleaning necessity determination unit 40 of the controller 20 acquires a management value from the management value holding unit 42 (step S10). That is, the management value holding unit 42 holds the management value, and the cleaning necessity determination unit 40 acquires this management value. The management value holding unit 42 includes, for example, an electrically rewritable nonvolatile memory such as a ROM (Read Only Memory), a hard disk drive, a solid state drive, and an EEPROM (Electrically Erasable Programmable Read Only Memory). For example, when the management value is stored in the ROM, the administrator can not rewrite the management value, but when the management value is stored in the hard disk drive or the like, the installation environment or installation of the transformer TR The management value can be rewritten by the administrator according to the number of years that have passed. In the present embodiment, for example, a value of 1 μA is held as the management value.

  Next, the cleaning necessity determination unit 40 of the controller 20 acquires a measurement value from the corrosion environment sensor 10 (step S12). That is, the cleaning necessity determination unit 40 acquires, from the corrosion environment sensor 10, a measured value that is a current value of the corrosion current.

  Next, the cleaning necessity determination unit 40 of the controller 20 compares the measurement value with the control value, and determines whether the measurement value exceeds the control value (step S14). When the measured value exceeds the management value (step S14: Yes), 1 is added to the value of the counter 48 (step S16). That is, since the corrosiveness of the environment in which the transformer TR is installed is higher than the environment represented by the control value, 1 is added to the value of the counter 48. On the other hand, when the measured value does not exceed the management value (step S14: No), this step S16 is skipped. That is, since the corrosiveness of the environment in which the transformer TR is installed is lower than the environment represented by the control value, the value of the counter 48 is not changed. As understood from this, in the present embodiment, the counter 48 counts the number of times the measured value exceeds the control value.

  Next, the cleaning necessity determination unit 40 of the controller 20 determines whether or not the value of the counter 48 is equal to or smaller than the first number (step S18). For example, the first number is ten. If the value of the counter is less than or equal to the first number (step S18: Yes), the cleaning necessity determination unit 40 determines that cleaning is unnecessary, and the cleaning determination result output unit 44 determines that the cleaning is unnecessary. The result is output to the cleaning determination result notification unit 30 (step S20). It should be noted that the determination result that does not require cleaning may not be output from the cleaning determination result output unit 44.

  When the value of the counter 48 is not less than or equal to the first number of times (step S18: No), the cleaning necessity determination unit 40 of the controller 20 has exceeded the first number of times and the second value It is determined whether or not the number is less than or equal to (step S22). For example, the second number is twenty. When the value of the counter exceeds the first number and is less than or equal to the second number (step S22: Yes), the washing necessity determination unit 40 needs the first level of washing. It is determined that the cleaning determination result output unit 44 outputs the determination result that the first level cleaning is necessary to the cleaning determination result notification unit 30 (step S24). Thereby, the light emitting device 34a of FIG. 2 emits light.

  When the counter value exceeds the first number and is not less than the second number (step S22: No), the cleaning necessity determination unit 40 of the controller 20 determines that the counter value is the second number. It is determined whether it exceeds the number of times and is equal to or less than the third number (step S26). For example, the third number is 30 times. When the value of the counter exceeds the second number and is equal to or less than the third number (step S26: Yes), the cleaning necessity determination unit 40 needs the second level of cleaning. It is determined that the cleaning determination result output unit 44 outputs the determination result that the second level cleaning is necessary to the cleaning determination result notifying unit 30 (step S28). Thereby, the light emitting device 34b of FIG. 2 emits light. Here, the second level of cleaning means that a longer time of cleaning or more careful cleaning is required than the first level of cleaning.

  Thereafter, the same determination processing is repeated N times, and finally, it is determined whether the value of the counter exceeds the Nth number of times (step S30). For example, the N-th number is 50 times, and in this case, N is 5. Then, when the value of the counter can be said to exceed the Nth number of times (step S30: Yes), it is determined that the Nth level of cleaning is required, and the cleaning determination result output unit 44 determines the Nth A determination result indicating that level cleaning is required is output to the cleaning determination result notification unit 30 (step S32). Thereby, the light emitting device 34 n of FIG. 2 emits light. Here, the N-th level cleaning means that, in the present embodiment, the longest time cleaning or the most careful cleaning is necessary. Here, the number of times N is arbitrary, but is 1 in the smallest case. In this case, the cleaning level is also only the first level.

  In step S30, if the value of the counter does not exceed the Nth number of times for some reason (step S30: No), or step S20, step S24, step S28, or step described above by the cleaning determination result output unit 44 When the process of S32 is completed, the controller 20 waits for a predetermined time (step S34). In this embodiment, for example, it waits for 10 minutes. And it returns to step S12 mentioned above, and acquires the measured value output from the corrosion environment sensor 10 again.

  As can be understood from this, in the present embodiment, the environment in which the transformer TR is installed is a highly corrosive environment, and if the state continues, the rate is once in 10 minutes. The value of the counter 48 is incremented by one.

  Note that the value of the counter 48 is reset when the administrator inputs a reset instruction to the controller 20 from the reset input unit 32 described above, and the measured number of times returns to zero. That is, when the cleaning of the radiator RD is completed, the administrator resets the value of the counter 48 to zero, and causes the corrosion management device 1 to manage a new cleaning time.

  As described above, according to the corrosion control device 1 according to the present embodiment, it is necessary to clean the radiator RD based on the measurement value of the corrosion environment sensor 10 and the control value serving as the control standard. Since the determination is made, the radiator RD can be cleaned at an appropriate time without relying on the manager's experience and intuition. That is, the administrator can manage the cleaning time of the radiator RD according to the notification of the cleaning determination result notification unit 30 of the corrosion management device 1. For this reason, it can suppress that sea salt adheres to the radiator RD of the transformer TR, deteriorates the coating film of the radiator RD, and causes rust.

  In addition, the cleaning determination result notifying unit 30 of the corrosion management apparatus 1 notifies the necessity of cleaning of the radiator RD at a plurality of levels, so that the administrator first needs rough cleaning or is more careful. Whether or not cleaning is necessary can be determined based on the notification of the cleaning determination result notification unit 30. For this reason, the burden on the administrator required for cleaning the radiator RD can be optimized.

[Modification of First Embodiment]
In the corrosion management apparatus 1 according to the first embodiment described above, the cleaning necessity determination unit 40 determines whether or not the radiator RD needs to be cleaned based on the number of times the measured value measured by the corrosion environment sensor 10 exceeds the management value. However, the cleaning necessity determination unit 40 may determine whether or not the radiator RD needs to be cleaned based on the time when the measured value exceeds the management value. The embodiment will be described in detail below.

  The overall configuration of the corrosion control device 1 in this modification is as shown in FIG. 1, but the corrosion control processing performed by the cleaning necessity determination unit 40 is different from that in FIG. 3 of the first embodiment described above. Yes. FIG. 4 is a flowchart illustrating the contents of the corrosion management process executed in the present modification. The corrosion management process shown in FIG. 4 is a process that may be realized by software in the controller 20 or may be realized by hardware as in the first embodiment.

  As shown in FIG. 4, the cleaning necessity determination unit 40 of the corrosion management device 1 according to the present modified example has a counter when the measured value exceeds the control value in step S14 (step S14: Yes). The waiting time defined in step S34 is added to 48 (step S16a). That is, since the corrosiveness of the environment in which the transformer TR is installed is higher than the environment represented by the control value, the standby time is added to the counter 48. On the other hand, when the measured value does not exceed the management value (step S14: No), this step S16a is skipped. That is, since the corrosiveness of the environment in which the transformer TR is installed is lower than the environment represented by the control value, the value of the counter 48 is not changed. As understood from this, in the present modification, using this counter 48, the time when the measured value exceeds the control value is measured cumulatively.

  Next, the cleaning necessity determination unit 40 of the controller 20 determines whether or not the value of the counter is equal to or less than the first time (step S18a). For example, the first time is 100 hours. If the value of the counter is less than or equal to the first time (step S18a: Yes), the washing necessity determination unit 40 determines that washing is unnecessary, and the washing determination result output unit 44 determines that the washing is not necessary. The result is output to the cleaning determination result notification unit 30 (step S20).

  When the value of the counter 48 is not less than or equal to the first time (step S18a: No), the cleaning necessity determination unit 40 of the controller 20 determines that the counter value exceeds the first time and the second time It is determined whether or not the time is equal to or less than (step S22a). For example, the second time is 200 hours. When the value of the counter exceeds the first time and is equal to or shorter than the second time (step S22a: Yes), the cleaning necessity determination unit 40 needs the first level of cleaning. It is determined that the cleaning determination result output unit 44 outputs the determination result that the first level cleaning is necessary to the cleaning determination result notification unit 30 (step S24). Thereby, the light emitting device 34a of FIG. 2 emits light.

  When the value of the counter exceeds the first time and is not equal to or less than the second time (step S22: No), the cleaning necessity determination unit 40 of the controller 20 determines that the counter value is the second value. It is determined whether or not the time exceeds the third time and the third time or less (step S26a). For example, the third time is 300 hours. When the value of the counter exceeds the second time and is equal to or less than the third time (step S26a: Yes), the cleaning necessity determination unit 40 needs the second level of cleaning. It is determined that the cleaning determination result output unit 44 outputs the determination result that the second level cleaning is necessary to the cleaning determination result notifying unit 30 (step S28). Thereby, the light emitting device 34b of FIG. 2 emits light. As mentioned above, the second level of cleaning means that a longer time of cleaning or more careful cleaning is required than the first level of cleaning.

  Thereafter, the same determination process is repeated N times, and finally, it is determined whether the value of the counter exceeds the Nth time (step S30a). For example, the Nth time is 500 hours, and in this case, N is 5. If the value of the counter exceeds the Nth time (step S30a: Yes), it is determined that the Nth level of cleaning is necessary, and the cleaning determination result output unit 44 A determination result indicating that level cleaning is required is output to the cleaning determination result notification unit 30 (step S32). Thereby, the light emitting device 34 n of FIG. 2 emits light. As mentioned above, the Nth level of cleaning means that the longest time of cleaning or the most careful cleaning is required. Here, the number of times N is arbitrary, but is 1 in the smallest case. In this case, the cleaning level is also only the first level.

  In step S30a, if the value of the counter does not exceed the Nth time for some reason (step S30a: No), or step S20, step S24, step S28, or step described above by the cleaning determination result output unit 44 When the process of S32 is completed, the controller 20 waits for a predetermined time (step S34). In this modification, for example, the waiting time is 10 minutes, and in this case, the time to be added to the counter in step S16a is also 10 minutes.

  As understood from this, in the present embodiment, the environment in which the transformer TR is installed is a highly corrosive environment, and when the state continues, the counter is measured for 10 minutes each by the counter. The cumulative time will be increased.

  Note that the time the counter is counting cumulatively is reset by inputting a reset instruction from the reset input unit 32 described above to the controller 20 by the administrator, and the measured time is configured to return to zero. ing. That is, when the cleaning of the radiator RD is completed, the manager resets the time measured by the counter 48 to zero, and causes the corrosion management apparatus 1 to manage a new cleaning time.

  As described above, the corrosion control device 1 according to the present modification also determines whether the radiator RD needs to be cleaned based on the measurement value of the corrosion environment sensor 10 and the control value serving as the control standard. As a result, the radiator RD can be cleaned at an appropriate time without relying on the manager's experience or intuition.

Second Embodiment
In the second embodiment, the corrosion control device 1 according to the first embodiment described above additionally has a function of calculating the corrosion rate and the corrosion rate of the radiator RD, so that the corrosion of the radiator RD can be performed with higher accuracy. Management is realized. Hereinafter, a different part from 1st Embodiment mentioned above is demonstrated.

  FIG. 5 is a block diagram illustrating the overall configuration of the corrosion management device 1 according to the present embodiment. As shown in FIG. 5, the corrosion management device 1 according to the present embodiment includes a corrosion rate calculation unit 50, a maintenance determination unit 52, a maintenance unit, and a controller 20 of the corrosion management device 1 according to the first embodiment described above. A determination result output unit 54 is additionally added.

  In addition, a maintenance determination result notification unit 56 is additionally added to the corrosion management device 1 according to the present embodiment. The maintenance determination result notification unit 56 may be provided separately from the cleaning determination result notification unit 30, or may be provided integrally with the cleaning determination result notification unit 30.

  FIG. 6 is a diagram illustrating an example of the configuration of the maintenance determination result notification unit 56 in the present embodiment. As shown in FIG. 6, in the present embodiment, maintenance is achieved by providing the light emitting device 58 on the same plate as the light emitting devices 34a, 34b,. A determination result notification unit 56 is configured. The light emitting device 58 may be a light emitter of the same color as the light emitting devices 34a, 34b,... 34n, or may be a light emitter of a different color. Further, the maintenance determination result notifying unit 56 may be configured by a warning sound generating device or the like instead of the light emitting device.

  As shown in FIG. 5, in this embodiment, the corrosion rate calculation unit 50 calculates the corrosion rate based on the measured value of the corrosion environment sensor 10, and the maintenance determination unit 52 maintains the transformer TR based on the corrosion rate. The maintenance determination result output unit 54 outputs the determination result. Then, when the determination result indicates that the maintenance of the transformer TR is necessary, the light emitting device 58 of the maintenance determination result notifying unit 56 shown in FIG. 6 emits light to notify the administrator. Since the administrator who finds that the light emitting device 58 emits light indicates that the corrosion of the radiator RD of the transformer TR is progressing and the thickness is likely to be thinner, the transformer TR is repaired And ask the manufacturer for replacement.

  Next, maintenance management processing executed by the controller 20 of the corrosion management device 1 will be described based on FIG. 7. FIG. 7 is a flowchart illustrating the contents of the maintenance management process, which may be implemented as software by the controller 20 or may be implemented as hardware. Further, this maintenance management process is a process that is executed in parallel with the above-described corrosion management process.

  As shown in FIG. 7, the corrosion rate calculation unit 50 of the controller 20 acquires a measured value from the corrosion environment sensor 10 (step S40). That is, the corrosion rate calculation unit 50 acquires a measurement value that is a current value of the corrosion current from the corrosion environment sensor 10. This measurement value is the same as the measurement value acquired by the cleaning necessity determination unit 40.

Next, the corrosion rate calculation unit 50 of the controller 20 calculates the corrosion rate based on the acquired measurement value (step S42). In general, how much carbon steel, which is a type of steel, is thinned by corrosion in a year, that is, the corrosion rate is represented by the following Equation 1.
logCR = 0.378logQ−0.636 (Formula 1)
Here, CR represents the corrosion rate, and the unit is mm / year. Q represents a value obtained by converting the integrated corrosion current value per day of the corrosion environment sensor 10 into a charge amount. The corrosion rate CR can be calculated by applying the corrosion current, which is the measurement value acquired in step S40, to the charge amount Q by applying this equation 1 to the corrosion amount CR.

  Next, the maintenance determination unit 52 of the controller 20 acquires the management value as the management reference and the initial thickness of the transformer TR (step S44). These management values and initial plate thickness may be held in the management value holding unit 42, or may be held by the maintenance determination unit 52 as parameters.

  The initial plate thickness is the initial thickness of the members constituting the transformer TR. In the present embodiment, in particular, the thickness of the fin of the radiator RD is used as the initial plate thickness. The control value defines the percentage of corrosion that requires maintenance. In the present embodiment, corrosion rate = corrosion amount / initial plate thickness is defined. For example, when the corrosion rate exceeds 60%, it is determined that maintenance is necessary.

  Therefore, the maintenance determination unit 52 of the controller 20 calculates the amount of corrosion based on the corrosion rate CR (step S46). That is, from the corrosion rate CR calculated in step S42, it is possible to calculate, for example, the amount of corrosion that would have corroded in one day. By cumulatively adding the amount of corrosion on a daily basis, it is possible to determine the amount of corrosion after installing the transformer TR.

  Next, the maintenance determination unit 52 of the controller 20 calculates this corrosion rate (step S48). That is, the corrosion rate is calculated by dividing the amount of corrosion so far calculated in step S46 by the initial thickness obtained in step S44.

  Next, the maintenance determination unit 52 of the controller 20 determines whether or not the corrosion rate calculated in step S48 exceeds a predetermined rate indicated by the management value (step S50). If the corrosion rate exceeds the predetermined rate indicated by the control value (step S50: Yes), the maintenance determination result output unit 54 of the controller 20 determines that the maintenance of the transformer TR is necessary. The result is output to the maintenance determination result notification unit 56 (step S52). As a result, the light emitting device 58 of the maintenance determination result notifying unit 56 shown in FIG. 6 emits light.

  On the other hand, when the corrosion rate does not exceed the predetermined rate indicated by the control value (step S50: No), the maintenance determination result output unit 54 of the controller 20 determines that maintenance of the transformer TR is unnecessary. The result is output to the maintenance determination result notification unit 56 (step S54). In this case, the light emitting device 58 of the maintenance determination result notifying unit 56 shown in FIG. 6 does not emit light. It should be noted that a determination result that does not require maintenance can be prevented from being output from the maintenance determination result output unit 54.

  After the maintenance determination result output unit 54 outputs the determination result in step S52 or step S54, the controller 20 stands by for a predetermined time (step S56). And it repeats from step S40 mentioned above. In this embodiment, since the corrosion rate CR is calculated using the charge amount Q per day of the corrosion current, which is a measured value, this maintenance management process may be performed once a day. For this reason, in this embodiment, the controller 20 waits for 24 hours. However, in order to obtain the charge amount Q per day more accurately, the maintenance management process is performed at a rate of once per hour or once in 15 minutes, and corrosion of the day is performed. The speed CR may be calculated.

  As described above, according to the corrosion management device 1 according to the present embodiment, in addition to the determination result of whether or not the radiator RD needs to be cleaned, the necessity of maintenance based on the corrosion rate and the corrosion rate of the radiator RD. Since the maintenance determination result notification unit 56 can also notify, the administrator can repair or replace the transformer TR based on the notification of the maintenance determination result notification unit 56. Therefore, the transformer can be maintained before the transformer TR breaks down due to corrosion or before the liquid leakage occurs from the transformer TR.

  In the embodiment described above, the corrosion rate CR calculated in step S42 is not notified to the outside, but the corrosion rate CR itself may be notified to the administrator. If the corrosion rate CR is notified to the manager, the manager can also determine the maintenance time based on the value of the corrosion rate CR.

  Further, the control value may be changed based on the corrosion rate CR calculated in step S42. For example, if the corrosion rate CR is slower than a predetermined reference value, a corrosion rate of 60% is taken as the control value, but if the corrosion rate CR is faster than the predetermined reference value, a corrosion rate of 40% is It can also be a management value. This makes it possible to properly manage the risk caused by corrosion when the corrosion rate CR is high.

Third Embodiment
The third embodiment is a modification of the above-described second embodiment, in which the administrator monitors the output of the determination results of the cleaning determination result notification unit 30 and the maintenance determination result output unit 54 to the control monitoring system. The determination result is notified to the terminal that is operating. Hereinafter, a different part from 2nd Embodiment is demonstrated.

  FIG. 8 is a block diagram illustrating the overall configuration of the corrosion management apparatus 1 according to the present embodiment. As shown in FIG. 8, in the present embodiment, a management control system 60 is provided instead of the cleaning determination result notifying unit 30 and the maintenance determination result notifying unit 56. That is, the output of the determination results of the cleaning determination result notification unit 30 and the maintenance determination result output unit 54 in the controller 20 is input to the management control system 60.

  In the present embodiment, the management control system 60 is configured to include a monitoring control unit 62 and a terminal 64. The outputs of the determination results of the cleaning determination result notifying unit 30 and the maintenance determination result output unit 54 are input to the monitoring control unit 62. The monitoring control unit 62 has a function of transmitting the determination result input from the cleaning determination result notifying unit 30 and the maintenance determination result output unit 54 to the terminal 64. That is, the monitoring control unit 62 has a function of an input device to which information of determination results is input and a transmission device that transmits information. There are various information transmission mechanisms. For example, communication using a telephone line, communication using radio, and the like are conceivable.

  The terminal 64 acquires the determination result from the monitoring control unit 62 and displays it on the screen. In the present embodiment, the administrator constantly monitors the screen of the terminal 64, and the radiator RD displayed on the screen of the terminal 64 determines whether the radiator RD needs to be cleaned. It is possible to know whether or not the cleaning is necessary, and whether or not the maintenance of the transformer TR is necessary from the result of the determination as to whether or not the maintenance displayed on the screen of the terminal 64 is necessary. Can know.

  Also, the terminal 64 not only notifies the determination result on the screen, but instead of notifying on the screen, it notifies the administrator of the necessity of cleaning the radiator RD with a sound such as an alarm sound. Further, it is possible to notify that the maintenance of the transformer TR is necessary.

  Furthermore, from the terminal 64 in the present embodiment, after the administrator finishes cleaning the radiator RD, the reset unit 46 can input the reset of the counter 48. Thereby, installation of the reset input part 32 can be omitted. However, as in the first and second embodiments described above, the reset input unit 32 may be provided so that the administrator can input the reset of the counter 48 from the reset input unit 32.

  As described above, according to the corrosion management device 1 according to the present embodiment, since the determination result of the controller 20 is input to the management control system 60, the administrator can use the terminal 64 that is monitored daily. It is possible to know the need for cleaning the radiator RD and the need for maintenance of the transformer TR. For this reason, the convenience and maintainability of the administrator can be improved.

  The third embodiment is applicable not only to the second embodiment but also to the first embodiment. In this case, the determination result of the cleaning determination result notifying unit 30 is input to the monitoring control unit 62, and the terminal 64 displays the determination result as to whether or not the radiator RD needs to be cleaned.

Fourth Embodiment
The fourth embodiment is a modification of the above-described third embodiment, in which corrosion prevention measures for the radiator RD are automatically executed in conjunction with the determination result that the radiator RD needs to be cleaned. It is. Hereinafter, a different part from 3rd Embodiment mentioned above is demonstrated.

  FIG. 9 is a block diagram illustrating the overall configuration of the corrosion management device 1 according to the present embodiment. As shown in FIG. 9, in this embodiment, a cleaning device 70 is connected to the management control system 60, and the cleaning device 70 cleans the radiator RD of the transformer TR based on the control of the management control system 60. I do. In other words, the cleaning device 70 is an example of a corrosion prevention device in the present embodiment.

  More specifically, the monitoring control unit 62 of the management control system 60 sends a control signal to the cleaning device 70 when a determination result indicating that the radiator RD needs to be cleaned is input from the cleaning determination result output unit 44. Output and clean the transformer TR. In cleaning, the monitoring control unit 62 controls the amount of water sprayed from the cleaning device 70, the water pressure, the operation time, and the like. This control may be constantly constant, or may be changed according to the level of the first level cleaning, the second level cleaning, or the like.

  As described above, according to the corrosion management device 1 according to the present embodiment, the administrator can manage the cleaning of the transformer TR using the determination result on the necessity of the cleaning of the radiator RD notified from the controller 20. In addition, the management control system 60 can automatically clean the transformer TR with the cleaning device 70. For this reason, labor saving of the maintenance of the transformer TR can be achieved.

  In addition, the washing | cleaning apparatus 70 is an example of the corrosion prevention countermeasure apparatus of transformer TR, and is not restricted to this. For example, as the corrosion prevention device, in addition to the cleaning device 70, a drying device after cleaning may be provided, or instead of the cleaning device 70, a sea salt neutralizer scattering device is provided. Also good. In any case, the management control system 60 may be configured to automatically operate the corrosion prevention countermeasure device based on the determination result that the radiator RD needs to be cleaned.

  In the fourth embodiment, the determination result as to whether or not maintenance is necessary does not affect the conditions for operating the cleaning device 70, so the fourth embodiment is also applied to the first embodiment. Is possible.

  While certain embodiments have been described above, these embodiments have been presented by way of example only, and are not intended to limit the scope of the invention. The novel apparatus and methods described herein may be implemented in various other forms. In addition, various omissions, substitutions, and changes can be made to the forms of the apparatus and method described in the present specification without departing from the spirit of the invention. The appended claims and their equivalents are intended to include such forms and modifications as fall within the scope and spirit of the invention.

  For example, in the above-mentioned embodiment, although the case where there was one corrosion environment sensor 10 provided in the transformer TR was described as an example, a plurality of the corrosion environment sensors 10 may be provided. When a plurality of corrosion environment sensors 10 are provided in the transformer TR, the plurality of measured values may be averaged and compared with the control value. Further, since the plurality of corrosion environment sensors 10 are provided, for example, even when one corrosion environment sensor 10 fails, the controller 20 causes the other corrosion environment sensors 10 to perform the above-described corrosion management processing and maintenance management. Processing can continue.

TR: Transformer, RD: Radiator, 1: Corrosion control device, 10: Corrosion environment sensor, 20: Controller, 30: Cleaning judgment result notifying unit, 40: Cleaning necessity judgment unit, 42: Control value holding unit, 44: Cleaning judgment result output unit, 46: Reset unit, 48: Counter

Claims (16)

A corrosive environment sensor attached to the surface of a transformer having a radiator and measuring the corrosiveness in the installation environment of the transformer;
A cleaning necessity determination unit that determines whether or not the radiator needs to be cleaned based on the measurement value of the corrosion environment sensor and the control value;
A cleaning determination result output unit that outputs a determination result of the cleaning necessity determination unit;
A corrosion management device comprising: A management value holding unit for holding the management value;
The corrosion control device according to claim 1, wherein the cleaning necessity determination unit reads the control value from the control value storage unit and compares the measured value with the control value.   The cleaning necessity determination unit includes a counter that measures the number of times the measured value exceeds the control value, and the radiator needs to be cleaned when the value of the counter exceeds a predetermined number of times. The corrosion management device according to claim 1, wherein the corrosion management device is determined.   The corrosion management apparatus according to claim 3, further comprising a reset unit that resets the value of the counter and resets the measured number to zero when the radiator is cleaned. The predetermined number of times includes at least a first number of times and a second number of times,
The cleaning necessity determination unit determines that the first level of cleaning is necessary when the value of the counter exceeds the first number and is less than or equal to the second number, and the value of the counter is determined. The corrosion management device according to claim 4, wherein when the number of times exceeds a second number, it is determined that a second level of cleaning is necessary.   The cleaning necessity determination unit includes a counter that cumulatively measures the time when the measured value exceeds the management value, and when the value of the counter exceeds a predetermined time, cleaning of the radiator is performed. The corrosion management device according to claim 1, wherein the corrosion management device is determined to be necessary.   The corrosion management apparatus according to claim 6, further comprising a reset unit that resets the value of the counter and resets the measured time to zero when the radiator is cleaned. The predetermined time has at least a first time and a second time,
The cleaning necessity determination unit determines that the first level of cleaning is necessary when the counter exceeds the first time and is equal to or shorter than the second time, and the counter 8. The corrosion management device according to claim 7, wherein if the time is exceeded, it is determined that a second level of cleaning is necessary.   The cleaning determination result notifying unit for notifying the administrator of the determination result as to whether or not the radiator needs to be cleaned, which is output from the cleaning determination result output unit, is further provided. The corrosion control device according to any one.   The corrosion management apparatus according to any one of claims 1 to 9, further comprising a corrosion rate calculation unit that calculates a corrosion rate based on the measured value of the corrosion environment sensor.   Based on the amount of corrosion calculated from the corrosion rate and the initial plate thickness of the fins of the radiator, the corrosion rate of the radiator is calculated, and when the corrosion rate exceeds a predetermined rate, maintenance of the radiator is necessary. The corrosion management apparatus according to claim 10, further comprising a maintenance determination unit that determines that   12. The management control system according to claim 1, further comprising: a management control system that displays the determination result output from the cleaning determination result output unit as to whether or not the radiator needs to be cleaned on a terminal managed by an administrator. The corrosion control device according to any one.   The determination result as to whether or not the radiator needs cleaning is output from the cleaning determination result output unit, and the maintenance determination result output from the maintenance determination unit is displayed on the terminal managed by the administrator. The corrosion management device according to claim 11, further comprising a management control system. Further comprising a corrosion prevention device for performing corrosion prevention measures on the radiator based on the control by the management control system;
The management control system, when a determination result that the cleaning of the radiator is necessary is output from the cleaning determination result output unit, the corrosion prevention countermeasure device performs a corrosion prevention countermeasure on the radiator. The corrosion management device according to claim 12 or claim 13.   The corrosion management apparatus according to claim 14, wherein the corrosion prevention countermeasure apparatus is a cleaning apparatus that cleans the radiator. A corrosion environment sensor mounted on a surface of a transformer having a radiator, measuring corrosion in the installation environment of the transformer;
A step of determining whether or not the radiator needs to be cleaned based on the measurement value of the corrosion environment sensor and the control value, and the cleaning necessity determination unit determines whether or not the radiator needs to be cleaned;
A step of outputting a determination result of the cleaning necessity determination unit, the cleaning determination result output unit;
A corrosion management method comprising:

Images