JP2004288503A - Residual lifetime evaluation device of high pressure breaker, and document prepared by it - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a residual lifetime evaluation device of a high pressure breaker, whereby the lifetime of the high pressure breaker including maintenance time can be evaluated. <P>SOLUTION: This residual lifetime evaluation device of the high pressure breaker has a personal computer to perform input of numerical numbers for items specified in advance based on investigation results at the site of the high pressure breaker and to perform calculation of residual lifetime based on the input numerical values. Once the numerical numbers based on the investigation results at least under the present circumstances are input, a document (figure) on which at least either one of the numerical values relative to the residual lifetime with a plurality of reliability factors or a graph is printed is prepared by using the residual lifetime evaluation device. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention overhauls the remaining life of a high-pressure circuit breaker such as a high-pressure vacuum circuit breaker (VCB) operating in a building or the like based on the results of an on-site investigation at the time of maintenance or the like, and the high-pressure circuit breaker. The present invention relates to an apparatus for evaluating the remaining life of a high-voltage circuit breaker, which can quantitatively evaluate how much the remaining life is prolonged due to the above and statistical remaining life required for a long-term renewal plan in the future.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, in a high-pressure circuit breaker (VCB) such as a high-pressure vacuum circuit breaker (VCB) operating in a building or the like, in addition to the number of years of operation, the high-pressure circuit breaker is removed from a high-pressure panel body for maintenance and the like. In addition to checking the deterioration and damage of various components that compose the high-voltage circuit breaker due to aging, it also tests whether the specified physical performance to be provided as the circuit breaker is maintained, and checks and tests the results. Based on this, the investigator had decided whether to renew the high-voltage circuit breaker.
[0003]
The determination of such an update determination is performed based on a criterion relating to the deduction of the determination of the deterioration of the circuit breaker (for example, see Non-Patent Document 1). Is scored.
[0004]
10 and 11 show the criteria for such a deduction evaluation. FIG. 10 (A) is a chart of the circuit breaker replacement criteria, and FIG. 10 (B) is the table of the replacement criteria of FIG. 10 (A). FIG. 11 is a chart showing the relationship between the deduction items and the number of deduction points, and FIG.
[0005]
FIG. 10 (B) shows that, for example, if the number of elapsed years exceeds 10 years, one point will be deducted for each year up to 19 years, and if it exceeds 20 years, two points will be deducted for each year. In addition, points are deducted according to the degree of damage such as stains, breakage, and rust on the exterior.Furthermore, for measures against similar accidents, points are deducted by judging the degree of defect. Points are deducted from the characteristics of the drive operation such as wear of the breaker contacts (contacts) and closing and opening, and points are deducted from the history of accidents and abnormalities as the inspection history.
[0006]
FIG. 10A shows that the total deductions added based on the various deduction items shown in FIG. 10B are subtracted from the breaker equipment score (100 points) in a new state, and the remaining numerical value is 61. When the score is between 70 and 70, replacement of the circuit breaker is urged, and when the score is 60 or less, semi-forced replacement is urged.
[0007]
Further, FIG. 11 shows a judgment criterion that requires attention and a judgment criterion that should be determined to be defective for each small item when performing the deterioration judgment shown in FIG. 10B.
[0008]
The margin of FIG. 10B shows the maximum deduction value for each item. For example, when the age is 24 years, the deduction value is 30 points. Indicates that it will peak off.
[0009]
FIG. 9 shows the evaluation after the deterioration judgment at the time of annual inspection of the substation equipment (implemented for eight VCBs (20 years passed)). Scores are taken from the five elements of wear and defects, and the total points are totaled. The lower row indicates before overhaul, and the upper row indicates after overhaul.
[0010]
As shown in the chart, it can be recognized that the number of deterioration points is reduced by about 10 points due to overhaul.
[0011]
[Non-patent document 1]
IEEJ Technical Report II, Section 290, Table 10
[0012]
[Problems to be solved by the invention]
By the way, the update judgment of the high-voltage circuit breaker described above is artificially performed by the investigator based on the deduction evaluation criteria, and the high-pressure circuit breaker in the sense including the update of the maintenance time of the high-voltage circuit breaker after the overhaul is included. The remaining life could not be evaluated.
[0013]
That is, in the above-described update determination criterion, a threshold value is set for two update levels, and it is possible to determine whether the update is in the examination stage or should be updated immediately. However, as shown in FIG. Despite the fact that the evaluation penalties were compiled from multifaceted indicators and quantitative evaluation was performed, it was not possible to know specific estimation results about how many years later the update should be performed.
[0014]
Such a decision to update the maintenance time and the like and the evaluation of the remaining life of the high-voltage circuit breaker are performed by the user of the building or the like for the maintenance and management of the entire building (for example, the examination of the repair time of the entire building or the examination of the rebuilding of the entire building). Etc.) is very convenient to know from the viewpoint, and also from the viewpoint of cost, such as being able to suppress unnecessary maintenance work and unnecessary inspection work and replacement of parts during such maintenance. Very convenient to get.
[0015]
The above-mentioned deduction evaluation criteria take into account past accident statistics of substation equipment, that is, accident statistics due to malfunction of the switching mechanism of the circuit breaker and insulation deterioration of the high voltage equipment. In the event of an accident, there is a risk of a power outage of the entire building or a large-scale spillover involving the area around the building, so the standard should be strict and reliable for current facilities. I can say.
[0016]
It is an object of the present invention to provide a new apparatus for evaluating the remaining life of a high-voltage circuit breaker, which can evaluate the remaining life of the high-voltage circuit breaker including the maintenance time, in order to solve the above-mentioned problem.
[0017]
[Means for Solving the Problems]
In order to achieve the object, the remaining life evaluation device for a high voltage circuit breaker according to the present invention comprises: an input unit for inputting a numerical value of a predetermined item based on a result of an on-site investigation of the high voltage circuit breaker; It is characterized by comprising calculating means for calculating the remaining life based on the input numerical value, and output means for outputting the remaining life calculated by the calculating means as a form.
[0018]
Further, in the apparatus for evaluating the remaining life of a high-voltage circuit breaker according to the present invention, the numerical value for each item input to the input means is a numerical value based on a current survey result.
[0019]
Furthermore, in the remaining life evaluation device for a high voltage circuit breaker of the present invention, the numerical value for each item input to the input means is a numerical value based on a current survey result and a numerical value based on a survey result after overhaul. Features.
[0020]
Further, the form created by the remaining life evaluation device of the high voltage circuit breaker of the present invention includes an input means for inputting numerical values of predetermined items based on a result of an on-site investigation of the high voltage circuit breaker, and the input means. Using a remaining voltage evaluation device for a high-pressure circuit breaker including a calculating means for calculating the remaining life based on the input numerical value, and an output means for outputting the remaining life calculated by the calculating means as a form, at least in the current state The numerical value based on the result of the investigation is input by the input means, and at least one of a numerical value or a graph relating to the remaining life of the plurality of reliability levels is marked.
[0021]
Further, the form created by the remaining life evaluation device of the high voltage circuit breaker according to the present invention includes input means for inputting numerical values of predetermined items based on a result of an on-site investigation of the high voltage circuit breaker, and the input means. A calculating means for calculating the remaining life based on the input numerical value, and an output means for outputting the remaining life calculated by the calculating means as a form, using a remaining life evaluation device for a high voltage circuit breaker, By inputting the numerical value based on the inspection result and the numerical value based on the inspection result after overhaul by the input unit, at least one of the numerical values or the graph relating to the remaining reliability of the plurality of reliability is marked so as to be comparable before and after overhaul. It is characterized by.
[0022]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, an embodiment of a remaining life evaluation device for a high voltage circuit breaker according to the present invention will be described with reference to the drawings.
[0023]
In addition, since the equipment itself such as a high-pressure circuit breaker for the remaining life evaluation of the present invention is not particularly limited, the description thereof is omitted.
[0024]
FIG. 1 is a perspective view of the basic configuration of the remaining life evaluation device of the present invention.
[0025]
As shown in FIG. 1, in the remaining life evaluation apparatus of the present invention, a personal computer 1 in a mobile format or a notebook format capable of inputting data at an inspection site, and a personal computer 1 based on the data input by the personal computer 1 are used. And a printer 3 for outputting the form 2.
[0026]
The personal computer 1 may be of a so-called desktop type, or may have a network such as a mobile type or a notebook type, and may include an input means such as a keyboard and an arithmetic function based on an input operation by the input means. The use environment is not particularly limited as long as it is provided. Further, the arithmetic function here is a calculating means including a recording medium such as a hard disk for storing necessary software and registration data to be described later, and a memory such as a RAM required for calculation.
[0027]
FIG. 2 is an explanatory diagram of the form 2 printed by the printer 3. As shown in FIG. 2, the form 2 has a title column 11 in which the names of building equipment such as a VCB to be diagnosed, a survey date, the number of VCBs to be investigated, and the like are described. Before and after the overhaul is performed, the points deducted by the same method as the above-described determination criterion in FIG. 9 are entered in the VCB / VCCS deterioration degree score table, which is respectively entered in the lower and upper sections of each VCB section. 12, a column 13 for describing the distribution table of the degree of deterioration, a column 14 for describing the prediction table of the progress of deterioration, a column 15 for describing the table for estimating the remaining life, and a finding column 16 are sectioned and printed.
[0028]
FIG. 3 is an operational development view of the personal computer 1 relating to screen display when creating and confirming each of the columns 11 to 16, and FIGS. 4 to 7 are explanatory diagrams of detailed screen display states in each operation.
[0029]
In FIG. 3, when the main menu screen 21 is displayed by activating the diagnostic program, “1. Diagnostic data input ”[2. Single processing ”[3. Skip processing "[4. Report output ”is displayed.
[0030]
By selecting the item by inputting a numeric key corresponding to each item, or by performing an appropriate operation such as a screen direct operation or a cursor selection, “1. Diagnostic data screen 22 for "input of diagnostic data", "2. Diagnostic data input screen 24 for "single processing", "3. Diagnostic data input screen 26 for "skip processing", "4. A report output screen 28 for "report output" is displayed.
[0031]
The specific screen display states of these input screens 22, 24, 26, 28 are shown in FIGS. 4 (A) to 4 (D).
[0032]
In the case of the title column 11 in which the names of the building equipment such as the diagnosed VCB, the name of the survey, the number of the surveyed VCBs, etc. are described, and the VCBs before and after the site overhaul in the case of the survey VCB (for example, 8), The work process of the VCS degradation degree score evaluation table entry column 12 is a diagnostic data screen 22 for “diagnosis data input” and a diagnostic data input for a lower level screen, “VCB / VC degradation degree score input screen independent processing”. Input processing is performed on the screen 221.
[0033]
Also, from the main menu screen 21, "2. "Single processing" is selected, and a corresponding (or new) file name is input on the diagnostic data input screen (FIG. 4B), a simple processing output menu screen 241 is displayed.
[0034]
Similarly, from the main menu screen 21, “3. When "Skip processing" is selected and a corresponding (or new) file name is input on the diagnostic data input screen (FIG. 4C), a finding document confirmation screen 261 for "Skip processing" is displayed.
[0035]
The specific screen display states of these sub-screens 221, 241 and 261 are shown in FIGS.
[0036]
In the simple processing output menu screen 241, as shown in FIG. Output of deterioration degree distribution graph "," 2, Output of deterioration progress prediction graph "," 3. Output of residual life estimation table "[4. Confirmation of observation documents ”[5. Report Printer Output ”,“ 6. File (report data) storage ”“ 7. The items "1. End" are displayed, and the items are selected by numeric keys corresponding to these items, or by selecting the items by an appropriate operation such as a screen direct operation or a cursor selection. Degradation degree distribution graph output screen 2411 for “Degradation degree distribution graph output”, “2. Deterioration progress prediction graph output screen 2412 for “Degradation progress prediction graph output”, “3. Output screen for remaining life estimation table 2413 for “Output remaining life estimation table”, “4. In addition to the display of an observation document confirmation screen 2414 for “confirmation of observation document”, print output of the form 2, storage of input data, and termination of all processing are operated on this screen.
[0037]
The specific screen display states of these screens 2411 to 2414 are shown in FIGS. FIG. 7 is a detailed enlarged explanatory view of the degradation degree distribution graph output screen 2411 shown in FIG. 6A, and FIG. 8 is an enlarged explanatory view of the degradation degree progress prediction graph output screen 2412 shown in FIG. 6B. FIG.
[0038]
In the above configuration, after the diagnostic program is activated and the main menu screen 21 is displayed, the diagnosis data input screen 22 and its lower screen, the VCB / VCCS degradation score input screen 221, are used to display the building of the diagnosed VCB or the like. After inputting the equipment name, the survey date, the number of VCBs to be surveyed, etc., and inputting the evaluation of the VCB / VCCS deterioration degree before and after the overhaul, the process returns to the main menu screen 21 once.
[0039]
Next, from the main menu screen 21, "2. "Single processing" is selected, a file name is input on the diagnostic data input screen, a simple processing output menu screen 241 is displayed, and then a deterioration degree distribution graph output screen 2411, a deterioration degree progress prediction graph output screen 2412, a residual The processing of the life estimation table output screen 2413 and the finding document confirmation screen 2414 is performed.
[0040]
In other words, “1. Deterioration degree distribution graph output ”is selected to display the deterioration degree distribution graph output screen 2411. On the screen, as shown in FIG. 7, the horizontal axis indicates the deterioration evaluation points, and the vertical axis indicates the cumulative occurrence probability. A distribution (cumulative Weibull probability distribution) graph of the degree of deterioration of the VCBs for the number of surveyed objects shown is displayed, and this statistical distribution is confirmed.
[0041]
Here, when the confirmation is completed and the display returns to the simple processing output menu screen 241, for example, “1. Recognition that the process of checking the distribution graph of the deterioration degree has been completed, such as that the background color and character color of the “Degradation degree distribution graph output” have changed, or that a check box (not shown) has a check mark. can do.
[0042]
On the simple processing output menu screen 241, “2. Deterioration progress prediction graph output ”is selected and the deterioration progress prediction graph output screen 2412 is displayed. On the screen, as shown in FIG. Is done.
[0043]
This progress prediction graph is centered on the current operating years (O / H implementation year) (vertical axis of the two-dot chain line), and has three reliability levels (for example, 98) before overhaul starting from the left side. %, 90%, and 50%) and three lines corresponding to three reliability levels (for example, 98%, 90%, and 50%) after overhaul starting from the current operating years. Is displayed.
[0044]
On this forecast graph, two evaluation levels of the VCB update execution level and the update plan level are indicated by horizontal lines at the same time, and each of the three statistical prediction lines before and after the overhaul intersects with the two evaluation levels. The remaining years are calculated from the years. In FIG. 8, the evaluation point at the update execution level is 60 points, and the evaluation point at the update plan level is 40 points.
[0045]
On the simple processing output menu screen 241, “3. When "Remaining life estimation table output" is selected and the remaining life estimation table output screen 2413 is displayed, the years are displayed for each reliability before and after overhaul, and this can be confirmed.
[0046]
On the simple processing output menu screen 241, “4. When "find document check" is selected and the find document check screen 2414 is displayed, among the plurality of patterns of find documents according to the length of the remaining life and the like stored in advance in the personal computer 1, a finding pattern considered to be optimal is obtained. It is automatically displayed (example sentences are displayed at 16 in FIG. 2), and the display is confirmed, and additions and corrections are performed.
[0047]
After digesting the four basic single processing menus, the simple processing output menu screen 241 displays “5. By selecting "report printer output" and printing out the form 2 from the printer 3, the print result in the state shown in FIG. 2 described above can be obtained.
[0048]
In the printed form 2, for example, if the content of the finding is to be changed, the skip processing of the main menu screen 21 is performed, and if the corresponding file name is specified, the finding document confirmation screen 261 is displayed. The change can be easily performed on the finding document confirmation screen 261 which simultaneously displays the life estimation table.
[0049]
After the finally acceptable form 2 can be created, the simple processing output menu screen 241 displays “6. Save file (report data) ”and save the data under the same file name as when the file was created, or under a file name with identification indicating that the data is final result data different from that. In the simple processing output menu screen 241, "7. "End" to end the creation and confirmation work of the form 2.
[0050]
As a result, by performing a file search of the report at a later date, “4. A report output screen 28 for "report output" is displayed, and it becomes possible to browse the final investigation report of an arbitrary site building and output the form 2.
[0051]
The above-described input / confirmation work is necessary for the personal computer 1 at the site, that is, the diagnosis data screen input 22 and the lower-level screen VCB / VCCS degradation degree scoring input screen 221 are used to check the VCB to be diagnosed and the like. After inputting the building equipment name, the survey date, the number of VCBs to be surveyed, etc., and inputting the evaluation of the VCB / VCS deterioration degree before and after the overhaul, the personal computer 1 is transferred to the worker's company, etc. You can bring it back to the work site, or if you bring only a separate report etc. to the work site and overhaul it, write the necessary numerical values in the report by hand and do all the work on the personal computer 1 May be performed at the company of the person.
[0052]
As described above, in the remaining life evaluation device of the present invention, the evaluation points of the VCB individually obtained in the field survey are evaluated based on the deduction evaluation of the deterioration judgment of the circuit breaker presented by the Institute of Electrical Engineers of Japan. After scoring, by treating these as a statistical distribution, the remaining life at that point can be estimated.
[0053]
In addition, the evaluation of the remaining life of the VCB can be statistically quantified and obtained, and the life extension of the VCB can be quantitatively evaluated by overhaul at the site. It is possible to point out an appropriate update time.
[0054]
Therefore, in the preventive maintenance of the substation equipment, not only can a great economic contribution be brought, but also the reliability can be improved.
[0055]
By the way, in the above-described embodiment, the case where two data before and after the overhaul are input is shown. However, overhaul may not be performed depending on the site (for example, due to a short age).
[0056]
In such a case, if only the VCB / VCS deterioration degree score evaluation without overhaul is input on the VCB / VCS deterioration degree score input screen 221, the corresponding field after the overhaul becomes blank.
[0057]
In addition, since the numerical value after the overhaul is not input, naturally, the graph of the column 13 for describing the distribution of the deterioration degree of the form 2 and the column 14 for describing the prediction table of the progress of the deterioration, and the column 15 for describing the remaining life estimation table after the overhaul are described. The estimated years are blank.
[0058]
As for the finding section 16, since the pattern sentence in the case where the overhaul is not performed is stored in the personal computer 1, the optimum finding corresponding to the input numerical value without overhaul is automatically selected and displayed. At the same time, the statistical remaining life of the VCB to be diagnosed based on the evaluation of the VCB / VCS degradation degree without overhaul is calculated in the column before overhaul in the remaining life estimation table entry column 15 at the present time. Explicitly.
[0059]
【The invention's effect】
In the apparatus for evaluating the remaining life of a high-voltage circuit breaker according to the present invention, it is possible to evaluate the remaining life of the high-voltage circuit breaker including the maintenance time by configuring as described above.
[Brief description of the drawings]
FIG. 1 is a perspective view of a basic configuration of a device for evaluating the remaining life of a high-voltage circuit breaker according to an embodiment of the present invention.
FIG. 2 is an explanatory diagram of a form output by the remaining life evaluation device of the high voltage circuit breaker according to the embodiment of the present invention.
FIG. 3 is an operational development view of a personal computer relating to screen display when creating and confirming a form.
FIG. 4 shows a display example of a screen corresponding to each item selected on the main menu screen in the development view shown in FIG. 3, (A) showing “1. (B) is an explanatory view of a diagnostic data screen for “diagnostic data input”. Explanatory drawing of a diagnostic data input screen for "single processing", (C) of "3. Explanatory drawing of the diagnostic data input screen for "skip processing", (D) of "4. FIG. 11 is an explanatory diagram of a report output screen for “report output”.
5 shows a display example of a screen corresponding to a sub screen in the development view shown in FIG. 3, and FIG. 5 (A) shows a diagnostic data input screen for “single processing input screen of VCB / VCCS degradation degree”; FIG. 7B is an explanatory diagram of a simple processing output menu screen for a “single processing output menu”, and FIG. 7C is an explanatory diagram of a finding document confirmation screen for “a finding document confirmation”.
6 shows a display example of a screen corresponding to each item selected on the simple processing output menu screen in the development view shown in FIG. 3, (A) showing “1. Illustration of Deterioration Distribution Graph Screen for Degradation Degree Distribution Graph Output ”, FIG. Illustration of Deterioration Progress Prediction Graph Screen for Degradation Progress Prediction Graph Output ”, FIG. FIG. 4D is an explanatory diagram of a screen for outputting a remaining life estimation table for “Remaining life estimation table output”, and FIG. It is an explanatory diagram of a finding document confirmation screen for "finding document confirmation".
FIG. 7 is an explanatory view of a confirmation screen of a distribution of the degree of deterioration constituting a part of the form in FIG. 2;
FIG. 8 is an explanatory diagram of a confirmation screen of a deterioration progress prediction graph which forms a part of the form of FIG. 2;
FIG. 9 is an explanatory diagram of an evaluation table after a deterioration determination when a conventional high-pressure circuit breaker is inspected annually.
10A and 10B show criteria for evaluation of deduction of a high-voltage circuit breaker, presented by the Institute of Electrical Engineers of Japan. FIG. 10A is a chart of the criteria for replacing the circuit breaker, and FIG. It is a table | surface which shows the relationship between a deduction item and the number of deductions.
FIG. 11 is a table of a deterioration determination example.
[Explanation of symbols]
Reference Signs List 1 personal computer (input means, calculation means), 2 forms, 3 printers (output means), 11 title column, 12 VCB / VCCS degradation score entry table, 13 degradation distribution table entry column, 14 degradation degree Column of progress forecast table of
Columns in the remaining life estimation table, 16 columns.

Claims (5)

Input means for inputting a numerical value of a predetermined item based on a result of an on-site investigation of the high-voltage circuit breaker; calculating means for calculating a remaining life based on the numerical value input by the input means; Output means for outputting the calculated remaining life as a form. An apparatus for evaluating the remaining life of a high-pressure circuit breaker. 2. The apparatus according to claim 1, wherein the numerical value of each item input to the input unit is a numerical value based on a current survey result. 2. The remaining life of the high-voltage circuit breaker according to claim 1, wherein the numerical value of each item input to the input unit is a numerical value based on a current survey result and a numerical value based on a survey result after overhaul. Evaluation device. Input means for inputting a numerical value of a predetermined item based on a result of an on-site investigation of the high-voltage circuit breaker; calculating means for calculating a remaining life based on the numerical value input by the input means; Output means for outputting the calculated remaining life as a form, using a high-voltage circuit breaker remaining life evaluation device, at least a numerical value based on the current survey results is input by the input means, thereby providing a plurality of reliability values. A report created by a remaining life evaluation device for a high voltage circuit breaker, wherein at least one of a numerical value or a graph relating to a remaining life is marked. Input means for inputting a numerical value of a predetermined item based on a result of an on-site investigation of the high-voltage circuit breaker; calculating means for calculating a remaining life based on the numerical value input by the input means; Using the remaining life evaluation device of the high voltage circuit breaker having an output means for outputting the calculated remaining life as a form, the numerical value based on the current investigation result and the numerical value based on the investigation result after overhaul are calculated by the input means. A report created by a remaining life evaluation apparatus for a high voltage circuit breaker, wherein at least one of numerical values or graphs relating to the remaining lives of a plurality of reliability levels is entered so as to be comparable before and after overhaul by being input.

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