KR101215800B1 - System and method for evaluating integrity of Gas Insulated Switchgear - Google Patents

Abstract

The system for evaluating the soundness of the switchgear corresponding to the aging degree of the switchgear includes an information input module for receiving information corresponding to a life diagnosis element for diagnosing the life of the switchgear and a state diagnosis element for diagnosing the state of the switchgear; Based on the information, the operation status of the switchgear, the installation type corresponding to the environment in which the switchgear is installed, the key factor analysis module for analyzing key factors corresponding to the results of the inspection and analysis of the switchgear, and each key factor It includes a soundness evaluation module that calculates the soundness of each switchgear by using the result of the analysis and the weight on the state of the switchgear by key factors, and determines whether to replace the switchgear based on the calculated soundness.

Description

Switchgear Integrity Evaluation System and Method {System and method for evaluating integrity of Gas Insulated Switchgear}

The present invention relates to a switchgear soundness evaluation system and method thereof. More specifically, the present invention relates to a system and method for evaluating the health of a gas insulated switchgear based on a key factor corresponding to the degree of aging of the gas insulated switchgear.

As a gas insulated device, a gas insulated switchgear (hereinafter referred to as "GIS" or "switched device") is used.

In general, the switchgear is a device composed of a bus, breaker, disconnector, grounding switch, current transformer, transformer, and lightning arrester, which are main components of a substation, in a grounded metal enclosure and filled with SF6 gas having excellent insulation and extinguishing characteristics. Corresponds to the protective switchgear used for substations, switching stations, and receiving stations.

Such a switchgear has a deterioration degree according to an installation environment and an operating load condition. However, replacement of the switchgear is performed uniformly under the same conditions (time-base) due to the degree of aging and the absence of a bad measuring method, so even if the state of the switchgear is good, there is a problem in that it cannot be effectively used and replaced. .

It is an object of the present invention to provide a system and method for evaluating the soundness of a switchgear based on a key factor corresponding to the degree of aging of the switchgear.

According to an embodiment of the present invention for solving the above problems, a system for evaluating the soundness of the switchgear corresponding to the aging degree of the switchgear

An information input module for receiving information corresponding to a life diagnosis element for diagnosing the life of the switchgear and a state diagnosis element for diagnosing the state of the switchgear; A core factor analysis module for analyzing key factors corresponding to the operation status of the switchgear, an installation form corresponding to an environment in which the switchgear is installed, and a result of checking and analyzing the switchgear; And the results of analyzing the key factors and the weight of the switchgear for each key factor to calculate the soundness of each switchgear, and the soundness evaluation to determine the replacement of the switchgear based on the calculated soundness module

The key factor analysis module is an operation information unit for analyzing a key factor including at least one of the load current, the breaking current, the number of closing and opening operations, the number of fault current interruption, the number of years, the number of failures, TM performance corresponding to the operation status ; An installation information unit configured to analyze key factors including at least one of environmental conditions of the switchgear corresponding to the installation form and importance of the switchgear in the substation; And insulation resistance, contact resistance, tripping time, breaking time, gap difference, operating characteristics, partial discharge, overheating location, SF ₆ gas purity, SF ₆ corresponding to the inspection and analysis results. Gas moisture content, SF ₆ It includes a check and analysis information to analyze the key factors including at least one of the gas SO ₂ content.

The core factor analysis module comprises a standard information unit for setting and managing the standard value for distinguishing between normal and abnormal for each of the key factors; And a state determination unit that determines whether a result analyzed by the inspection and analysis information unit corresponds to a normal state or an abnormal state based on the standard value.

The health assessment module is characterized by calculating the weight for each key factor using a score of the rating for the evaluation list for each of the key factors and the soundness correlation value that scores the correlation between the health rating for each evaluation list.

The evaluation list for each of the key factors may include at least one of a magnitude of a failure effect, a vulnerability of a failure prevention, a frequency of failure, an effect on a system, and a delay of recovery.

The soundness evaluation module sets priorities according to specific criteria for evaluating expertise for each core factor with respect to the weight for each core factor, and final weight for each core factor obtained by applying the priority to the weight for each core factor. Based on the calculation of the switchgear soundness.

Switchgear soundness evaluation system includes a statistical processing module for calculating the statistics corresponding to the state of the switchgear based on the health of the switchgear; And a display module configured to display at least one of health of each switchgear and statistics corresponding to a state of the switchgear as a result of analyzing the key factors.

According to another embodiment of the present invention for solving the above problems, a method for evaluating the soundness of the switchgear corresponding to the aging degree of the switchgear in a system operating in conjunction with at least one switchgear

Receiving, by the system, information corresponding to a life diagnosis element for diagnosing the life of the switchgear and a state diagnosis element for diagnosing the state of the switchgear; Analyzing key factors corresponding to the operation status of the switchgear, the installation form corresponding to the environment in which the switchgear is installed, and the result of checking and analyzing the switchgear based on the information; Calculating the soundness of each switchgear by using a result of analyzing each key factor and a weight on the state of the switchgear for each key factor; And determining whether or not to replace the switching device based on the soundness.

The analyzing of the core factors may include analyzing at least one of the core factors including at least one of a load current, a breaking current, a closing and opening operation frequency, a breaking current breaking frequency, a number of years of use, a failure count, and a TM record corresponding to the operation status. step; Analyzing a key factor including at least one of environmental conditions of the switchgear corresponding to the installation form, and importance of the switchgear in the substation; And insulation resistance, contact resistance, tripping time, breaking time, gap difference, operating characteristics, partial discharge, overheating location, SF ₆ gas purity, SF ₆ corresponding to the inspection and analysis results. Gas moisture content, SF ₆ Analyzing a key factor including at least one of the amount of gaseous SO ₂ .

The analyzing of the key factors may include setting and managing standard values for distinguishing normal from abnormal for each of the key factors; And determining whether a result analyzed by the inspection and analysis information unit corresponds to a normal state or an abnormal state based on the standard value.

The step of calculating the soundness for each switchgear is to calculate the weight for each key factor by using the score of the rating for the evaluation list for each of the key factors and the soundness correlation value that scores the correlation between the health rating for each evaluation list. It is done.

The calculating of the soundness of each switchgear may include setting priorities based on specific criteria for evaluating expertise for each core factor with respect to the weight for each core factor; Calculating the final weight for each key factor by applying the priority to the weight for each key factor; And calculating the switchgear integrity based on the final weight.

The method of evaluating the soundness of the switchgear may include calculating statistics corresponding to the state of the switchgear based on the soundness of the switchgear; And analyzing at least one of the key factors, and displaying at least one of health of each switchgear and statistics corresponding to a state of the switchgear.

According to the switchgear soundness evaluation system and the method of the present invention, by not evaluating the switchgear device uniformly according to the same conditions, by evaluating the soundness corresponding to the performance and the degree of aging of each switchgear, it is differentiated by switchgear Replacement time can be applied.

In addition, according to the switchgear soundness evaluation system and method of the present invention, it is possible to reduce the investment cost of the switchgear through the differential switchgear replacement and improved performance.

1 is a configuration diagram schematically showing a switchgear soundness evaluation system according to an embodiment of the present invention.
2 is a block diagram showing a core factor analysis module according to an embodiment of the present invention.
3 is a diagram showing key factors according to an embodiment of the present invention.
FIG. 4 is a diagram illustrating scores and soundness correlation values for each grade of the evaluation list for each of the key factors according to an embodiment of the present invention.
5 is a view showing the priority for each key factor according to an embodiment of the present invention.
6 is a view showing a process of evaluating the soundness in the soundness evaluation module according to an embodiment of the present invention.
7 is a view showing the soundness evaluation grade and management plan according to an embodiment of the present invention.
8 is a flowchart illustrating a method of evaluating the soundness of the switchgear according to the embodiment of the present invention.

The present invention will now be described in detail with reference to the accompanying drawings. Hereinafter, a repeated description, a known function that may obscure the gist of the present invention, and a detailed description of the configuration will be omitted. Embodiments of the present invention are provided to more fully describe the present invention to those skilled in the art. Accordingly, the shape and size of elements in the drawings may be exaggerated for clarity.

Hereinafter, a switchgear soundness evaluation system and method thereof according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

The switchgear according to the embodiment of the present invention corresponds to a gas insulated switchgear (Gas Insulated Switcher).

First, the soundness of the switchgear according to the embodiment of the present invention corresponds to the state of the switchgear corresponding to the aging degree of the switchgear.

1 is a configuration diagram schematically showing a switchgear soundness evaluation system according to an embodiment of the present invention. In addition, Figure 2 is a configuration showing a key factor analysis module according to an embodiment of the present invention, Figure 3 is a view showing a key factor according to an embodiment of the present invention.

Referring to FIG. 1, the switchgear soundness evaluation system includes an information input module 100, a key factor analysis module 200, a soundness evaluation module 300, a statistical processing module 400, an information providing module 500 and And a display module 600.

The information input module 100 is a state of operation of the switchgear corresponding to the basic evaluation data required for evaluating the soundness of the switchgear (hereinafter referred to as "operation status"), the form of the switchgear (hereinafter, "installation" Form "), and the results of the inspection and diagnosis of the switchgear (hereinafter, referred to as" check and diagnosis result "), etc., are inputted. Here, the installation form and the operation state corresponds to the life diagnosis factor (Factor) for diagnosing the life of the switchgear, and the check and analysis results correspond to the state diagnosis element (Factor) for diagnosing the state of the switchgear.

The core factor analysis module 200 analyzes key factors for each key factor group, that is, operation status, installation type, check and diagnosis result, based on the data input through the information input module 100.

Referring to FIG. 2, the core factor analysis module 200 includes an operation information unit 210, an installation information unit 220, a check and analysis information unit 230, a state determination unit 240, and a standard information unit 250.

The driving information unit 210 analyzes key factors corresponding to the driving status of the switchgear.

Referring to FIG. 3, the key factors corresponding to the operation status are load current, breaking current, closing and opening operation times, breaking current breaking times, years of use, number of failures, and maintenance history (Trouble Memo, hereinafter referred to as "TM"). Performance, etc.

The load current is the load, that is, the current within rated current in the switchgear.

The breaking current corresponds to the breaking capacity that controls the operation of the breaker when a fault current flows through the breaker in the switchgear.

The number of closing and opening operations is the number of opening and closing operations of the switching device.

The fault current cutoff frequency is the number of times the current flowing in the case of a failure in the switchgear is cut off.

The years of use correspond to the years of use of the switchgear.

The number of failures corresponds to the number of failures of the switchgear.

TM performance includes the number of TM occurrences.

The installation information unit 220 analyzes key factors corresponding to the installation form of the switchgear.

Referring to FIG. 3, key factors corresponding to the installation form include environmental conditions, importance, and the like.

Specifically, the installation information unit 220 analyzes the environmental conditions of the switchgear, for example, located indoors or outdoors. In addition, the installation information unit 220 analyzes the importance of the switchgear in the substation.

The inspection and analysis information unit 230 analyzes the key factors corresponding to the inspection and analysis results of the switchgear.

Referring to FIG. 3, key factors corresponding to the inspection and analysis results include insulation resistance, contact resistance, trip time, trip time, close time, gap difference, operation characteristics, and partial discharge. PD "), superheated point, SF ₆ gas purity, SF ₆ Gas moisture content, SF ₆ Gas SO ₂ amount and the like.

Insulation resistance is a resistance that prevents electricity in the switchgear and prevents electric shock or mechanical accident caused by electricity in the switchgear.

The contact resistance corresponds to the electric resistance value generated on the contact surface of the switching device, and corresponds to the environment of the contact surface.

The trip time is the time when the circuit inside the switchgear is automatically cut off when the current supplied to the load through the switchgear approaches or exceeds the breaking capacity.

The breaking time corresponds to the sum of the opening time until the movable electrode of the switchgear starts moving from the fixed electrode to open and the contact is sufficiently separated and the arc is completely extinguished.

Gari vehicle corresponds to the time difference that the three-phase contact is completely separated in the switchgear.

The operating characteristics correspond to the characteristics of the specific operation of the switchgear.

Partial discharge PD corresponds to an accident caused by insulation deterioration of an electric device in the switchgear, that is, an insulation defect, an insulation failure, a contact failure, and the like, and is a discharge occurring in one portion without occurring between the electrodes.

Overheating points correspond to certain overheated parts in switchgear.

SF ₆ gas purity corresponds to the extent to which SF ₆ is contained in the gas.

SF ₆ The moisture content of the gas corresponds to the moisture content in the SF ₆ gas.

SF ₆ The amount of gas SO ₂ corresponds to the concentration of SO ₂ in the SF ₆ gas.

The standard information unit 250 sets standard values for distinguishing normal and abnormal for each of the key factors, and manages standard values set for the key factors. For example, the standard information unit 250 sets the steady state when the SF ₆ gas purity is 1 ppm or less among the core factors, and sets the abnormal state when the SF ₆ gas purity is greater than 1 ppm. In addition, the specification information unit 250 stores the standard value set for each of the core factors into a database (DB).

The state determination unit 240 is abnormal based on the analysis result of the inspection and analysis information unit 230, that is, the analysis results of the key factors corresponding to the inspection and analysis of the switchgear based on the standard value set for each key factor is abnormal state Determine if it corresponds to a state. In this case, the state determination unit 240 provides the determination result to the user through the display module 600.

The soundness evaluation module 300 analyzes the results of analysis of the core factors in the core factor analysis module 200, that is, the environmental information unit 210, the driving information unit 220, the inspection and analysis information unit 230, and The soundness of the individual switchgear is calculated using the analysis result of the state determination unit 240, and the presence or absence of replacement of the switchgear is determined based on the calculated soundness.

For example, the soundness evaluation module 300 analyzes each key factor in the operation information unit 210, the installation information unit 220, the inspection and analysis information unit 230, and the analysis result of the state determination unit 240. And, the health score is calculated using the weight of each key factor. Here, the weight for each key factor is a weight that affects the state of the switchgear for each key factor, that is, the health of the switchgear.

The soundness score is expressed as in Equation 1.

는 각 핵심인자 별 점수이다. Referring to Equation 1, Wi is the weight for each key factor,

Is the score for each key factor.

)은 100이 되도록 한다. 즉, 건전도 점수는 핵심인자가 건전도에 미치는 영향이 클수록 100에 접근하고, 핵심인자가 건전도에 미치는 영향이 작을수록 0에 접근한다. Sum of weights for key factors (

) Is 100. In other words, the health score approaches 100 as the key factor affects soundness, and the smaller the key factor affects soundness, the closer to zero.

를 설정한다. The soundness evaluation module 300 is such that the result of analyzing the key factors on the soundness, that is, closer to 1 is proportional to the life of the switchgear and closer to 0 in inverse proportion.

Set.

For example, the soundness evaluation module 300 is one of the key factors corresponding to the installation type in the case of environmental conditions, indoors because the adverse effects of the natural environment, such as snow and rain winds when indoors is lower than outdoors Can be set to 0.

를 개폐장치가 신품일 일 때 1로, 개폐장치를 10년 사용했을 때 0.5로, 20년 이상 사용했을 때 0으로 설정할 수 있다. The soundness evaluation module 300 deteriorates as the number of years of use deteriorates as the number of years of use among key factors corresponding to the operation status

It can be set to 1 when the switch is new, 0.5 when the switch is used for 10 years, or 0 when the switch is used for 20 years or more.

를 SF₆ 가스 SO₂량에 이상이 발생한 경우가 0회이면 1로, 1회이면 0.5로, 2회이면 0으로 설정할 수 있다. Integrity evaluation module 300 is the case of the concentration of SO ₂ in SF ₆ gas among the key factors corresponding to the inspection and analysis results,

SF ₆ If an abnormality occurs in the amount of gas SO ₂ , it can be set to 1 for 0 times, 0.5 for 1 time, and 0 for 2 times.

)를 계산한다. 여기서, 핵심인자 별 평가 목록은 고장영향의 크기, 고장방지의 취약성, 불량발생 빈도, 계통에 미치는 영향, 복구의 지연성 등을 포함한다. Referring to FIG. 4, the soundness evaluation module 300 weights each key factor by using a soundness correlation score (output ranking) that scores the correlation between the scores of the evaluation lists for each of the key factors and the soundness of each of the evaluation lists. (

Calculate Here, the evaluation list by key factors includes the magnitude of the failure effect, the vulnerability of failure prevention, the frequency of failure, the effect on the system, and the delay of recovery.

The magnitude of the failure effect is the magnitude of the effect on the soundness of the failure corresponding to the key factor in the switchgear. The vulnerability of failure prevention corresponds to the probability of failing to prevent failures before corresponding failures in the switchgear occur. The occurrence frequency of defects is the frequency at which defects corresponding to the corresponding key factors occur in the switchgear. The effect on the system corresponds to the effect of the corresponding key factors on the system within the switchgear. The delay of recovery corresponds to the delay time to recover from the failure of the key factor in the switchgear.

Specifically, the rating is divided into five levels (very high, high, normal, low, and very low) for the evaluation list by key factors. Next, the soundness evaluation module 300 sets a grade as one of five levels for each of the evaluation lists for each of the key factors, and sets the score for each rating (M _il ) to the soundness correlation value (output ranking) for each evaluation list ( Multiply by N _il ) to calculate the weight of the corresponding key factor.

)는 수학식 2와 같이 나타낸다. That is, the weight of each key factor (

) Is expressed as in Equation 2.

는 해당 핵심인자의 종합점수에 해당하는 것으로, 해당 핵심인자의 평가 목록에 대한 등급 별 점수와 평가 목록 별 건전도와의 연관성을 점수화한 건전도 연관성 수치를 이용하여 구한다. Referring to Equation 2,

Corresponds to the composite score of the core factor, and is obtained using the health level correlation score that scores the correlation between the scores of the core factor's evaluation list and the health level of the evaluation list.

For example, we explain the process of calculating the weights of computational factors among key factors.

SF ₆ The magnitude of the effect of gaseous SO _{2 on} failure is high (8 points), the vulnerability of failure prevention is low (4 points), the frequency of failures is low (4 points), the effect on the system is high (8 points), recovery If the delay is normal (6 points), the total score of the core factors of the computer value is 180 points (= 8 * 10 + 4 * 8 +), which is the product of the scores for each score list and the health relevance value for each score list. 4 * 6 + 8 * 4 + 6 * 2).

Then, the soundness evaluation module 300 calculates the weight of the core factor by dividing the total score of the core factors by the sum of the total scores for each core factor, that is, the total score.

)에 대하여, 각 핵심인자 별로 특정 기준에 의해 전문성을 평가하여 우선순위를 정한다. 이때, 각 핵심인자 별로 전문성을 평가하는 평가군은 변전소의 현장실무자, GIS 제작사, GIS 관련 연구기관 등으로 구성할 수 있으며, 이에 한정되지 않는다. Referring to FIG. 5, the soundness evaluation module 300 calculates the weighted key factor for each key factor (

For each key factor, the expertise is assessed and prioritized based on specific criteria. At this time, the evaluation group for evaluating the professionalism by each key factor may be composed of the field workers of the substation, GIS manufacturers, GIS-related research institutions, but is not limited thereto.

Next, the soundness evaluation module 300 obtains the final weight value (Wi) for each key factor using the priority. Here, the final weight value is expressed as in Equation 3.

The statistical processing module 400 calculates the statistics corresponding to the state of the switchgear based on the soundness of the switchgear calculated by the soundness evaluation module 300, and provides the calculated result to the user through the display module 600. do. At this time, the state of the switchgear includes the state of the switchgear by substation, establishment, region, health, and operating conditions for the entire switchgear.

In addition, the statistical processing module 400 analyzes the correlation between the core factor and the actual failure performance, by lowering the weight of the core factor whose correlation degree is lower than the reference correlation degree, and by increasing the weight of the high correlation key factor, Soundness evaluation module 300 may be optimized.

Next, the process of evaluating the soundness in the soundness evaluation module 300 will be described in detail with reference to FIG. 6.

6 is a view showing a process of evaluating the soundness in the soundness evaluation module according to an embodiment of the present invention.

Referring to Figure 6, the soundness evaluation module 300 is based on the environmental stress, composite stress, heat stress, mechanical stress, failure history and the like corresponding to the life diagnosis element for diagnosing the life of the switchgear and the installation status and operation status Get input.

Here, environmental stress (environmental condition, importance) is the same as the key factor corresponding to the installation type, complex stress (years of use), thermal stress (maximum current, breaking current), mechanical stress (number of operation, number of interruptions), failure The history (failure count, TM performance, and manufacturer quality) is the same as the key factors corresponding to the operation status.

In addition, the soundness evaluation module 300 receives a check result and a preventive diagnosis result corresponding to the state diagnosis element for diagnosing the state of the switchgear. Here, the inspection results and the preventive diagnosis results are the same as the key factors corresponding to the inspection and analysis results.

Next, the soundness evaluation module 300 calculates the soundness score of the switchgear using the equation (1). In this case, the weight of the installation form in the soundness evaluation module 300 is 6%, the weight of the operation status is 68%, the weight of the inspection and analysis results is 26% (weight of the inspection performance is 15% + preventive diagnosis results Weight is 11%).

Referring to FIG. 7, the soundness evaluation module 300 is a "good condition" for example, if the soundness score is more than a user-defined reference score (for example, 70 points), for example, A grade, reference score If less, it is judged to be “interest state” that should be of interest, for example, class B. In addition, the soundness evaluation module 300 provides the soundness score and the state of the determined switchgear to the user through the display module 600. In this case, the soundness evaluation module 300 may provide a user with a performance improvement standard, a performance improvement plan, and the like of the switchgear according to the corresponding grade.

Next, a method of evaluating the soundness of the switching device will be described in detail with reference to FIG. 8.

8 is a flowchart illustrating a method of evaluating the soundness of the switchgear according to the embodiment of the present invention.

Referring to Figure 8, the switchgear soundness evaluation system receives the basic evaluation data required to evaluate the soundness of the switchgear (S810). Here, the basic evaluation data includes data of key factor groups including operation status, installation type, inspection and diagnosis results, and the like.

The switchgear soundness evaluation system classifies key factors for each key factor group based on the received basic evaluation data (S820). Here, the key parameter group includes the operation status, installation form, inspection and diagnosis results.

Key factors corresponding to the operation status include load current, breaking current, closing and opening operations, breaking current breaking, year of use, failure, TM performance, etc.

Key factors corresponding to the installation type include environmental conditions and importance.

Key factors corresponding to the inspection and analysis result are insulation resistance, contact resistance, trip time, breaking time, gari vehicle, operating characteristics, partial discharge (PD), overheating location, SF ₆ gas purity, SF ₆ Gas moisture content, SF ₆ Gas SO ₂ amount and the like.

Switchgear soundness evaluation system is analyzed by key factors (S830).

For example, the switchgear soundness evaluation system determines the number of years of use of the switchgear among key factors corresponding to the operation status. In addition, the switchgear soundness evaluation system determines whether the environmental conditions are located indoors or outdoors among the key factors corresponding to the installation type. In addition, the switchgear soundness evaluation system is based on the results of the inspection and analysis of the concentration of SO ₂ in SF ₆ gas, that is SF ₆ Know the amount of gas SO ₂ .

The switchgear soundness evaluation system calculates the soundness of the switchgear using the results of analyzing each key factor and the weight for each key factor (S840). Here, the weight for each key factor is a weight that affects the state of the switchgear for each key factor, that is, the health of the switchgear.

)를 계산한다. 여기서, 핵심인자 별 평가 목록은 고장영향의 크기, 고장방지의 취약성, 불량발생 빈도, 계통에 미치는 영향, 복구의 지연성 등을 포함한다. Specifically, the switchgear soundness evaluation system uses the weightedness of each key factor by using the soundness correlation value that scores the correlation between the scores of the rating list for each key factor and the health rating of the evaluation list.

Calculate Here, the evaluation list by key factors includes the magnitude of the failure effect, the vulnerability of failure prevention, the frequency of failure, the effect on the system, and the delay of recovery.

The ratings are divided into five levels (very high, high, normal, low, and very low) for a list of key factors. Next, the switchgear soundness evaluation system sets the grade to one of five levels for each evaluation list for each core factor, and multiplies the score for each evaluation list by the health relevance value for each evaluation list, thereby multiplying the weight of the corresponding core factor. Calculate

Next, the switchgear soundness evaluation system uses the priority to find the final weight for each key factor. Here, the priority corresponds to the result of evaluating the expertise of each core factor with respect to the weight of each core factor.

The switchgear soundness evaluation system calculates statistics corresponding to the state of the switchgear based on the soundness of the switchgear (S850). At this time, the state of the switchgear includes the state of the switchgear by substation, establishment, region, health, and operating conditions for the entire switchgear.

The switchgear soundness evaluation system provides the user with the result of calculating the statistics corresponding to the state of the switchgear (S860).

As a result, the switchgear soundness evaluation system may apply a differential replacement time for each switchgear by evaluating the soundness corresponding to the performance and the degree of aging of each switchgear.

As described above, the best embodiment has been disclosed in the drawings and the specification. Although specific terms have been employed herein, they are used for purposes of illustration only and are not intended to limit the scope of the invention as defined in the claims or the claims. Therefore, those skilled in the art will understand that various modifications and equivalent other embodiments are possible from this. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

100; Information input module 200; Core Factor Analysis Module
210; A driving information unit 220; Installation Information Department
230; Check and analysis information unit 240; State judging section
250; Standard information unit 300; Soundness evaluation module
400; Statistical processing module 500; Informational Module
600; Display module

Claims (13)

In the system for evaluating the soundness of the switchgear corresponding to the aging degree of the switchgear,
An information input module for receiving information corresponding to a life diagnosis element for diagnosing the life of the switchgear and a state diagnosis element for diagnosing the state of the switchgear;
A core factor analysis module for analyzing key factors corresponding to the operation status of the switchgear, an installation form corresponding to an environment in which the switchgear is installed, and a result of checking and analyzing the switchgear; And
The soundness evaluation module calculates the soundness of each switchgear by using the result of analyzing each key factor and the weight of the switchgear for each key factor, and determines whether to replace the switchgear based on the calculated soundness
Switchgear soundness evaluation system comprising a. The method according to claim 1,
The key factor analysis module
An operation information unit for analyzing key factors including at least one of a load current, a breaking current, an input and open operation frequency, a failure current interruption frequency, a number of years of use, a failure number, and a TM record corresponding to the operation status;
An installation information unit configured to analyze key factors including at least one of environmental conditions of the switchgear corresponding to the installation form and importance of the switchgear in the substation; And
Insulation resistance, contact resistance, trip time, interruption time, gap difference, operating characteristics, partial discharge, overheated location, SF ₆ gas purity, SF ₆ corresponding to the above inspection and analysis results Gas moisture content, SF ₆ Inspection and analysis information unit for analyzing key factors including at least one of the gas SO ₂ content
Switchgear soundness evaluation system comprising a. The method according to claim 2,
The key factor analysis module
A standard information unit for setting and managing a standard value for distinguishing normal from abnormal for each of the key factors; And
A state determination unit that determines whether a result analyzed by the inspection and analysis information unit corresponds to a normal state or an abnormal state based on the standard value
Switchgear soundness evaluation system further comprising. The method according to claim 1,
The soundness evaluation module
Switching device soundness evaluation system, characterized in that for calculating the weight for each of the key factors by using the soundness correlation score that scores the correlation between the score for each of the evaluation list for each key factor and the health of each evaluation list. The method of claim 4,
The list of evaluation by key factors above
Switchgear soundness evaluation system, characterized in that it comprises at least one of the magnitude of the failure effect, the vulnerability of failure prevention, the frequency of failure, the effect on the system, the delay of recovery. The method according to claim 1,
The soundness evaluation module
Priority is set based on a specific criterion for evaluating expertise for each core factor with respect to the weight for each core factor, and the switchgear is sound based on the final weight for each core factor obtained by applying the priority to the weight for each core factor. Switchgear soundness evaluation system, characterized in that for calculating the degree. The method according to claim 1,
A statistical processing module for calculating statistics corresponding to the state of the switchgear based on the soundness of the switchgear; And
A display module for displaying at least one of the health of each switchgear and the statistics corresponding to the state of the switchgear as a result of analyzing the key factors
Switchgear soundness evaluation system further comprising. In the system for operating in conjunction with at least one switchgear in a method for evaluating the health of the switchgear corresponding to the degree of aging of the switchgear,
Receiving, by the system, information corresponding to a life diagnosis element for diagnosing the life of the switchgear and a state diagnosis element for diagnosing the state of the switchgear;
Analyzing key factors corresponding to the operation status of the switchgear, the installation form corresponding to the environment in which the switchgear is installed, and the result of checking and analyzing the switchgear based on the information;
Calculating the soundness of each switchgear by using a result of analyzing each key factor and a weight on the state of the switchgear for each key factor; And
Determining whether or not to replace the switch based on the soundness;
Switchgear soundness evaluation method comprising a. The method according to claim 8,
Analyzing the key factors
Analyzing key factors including at least one of a load current, a breaking current, a closing and opening operation frequency, a failure current breaking frequency, a number of years of use, a failure number, and a TM record corresponding to the operation status;
Analyzing a key factor including at least one of environmental conditions of the switchgear corresponding to the installation form, and importance of the switchgear in the substation; And
Insulation resistance, contact resistance, trip time, interruption time, gap difference, operating characteristics, partial discharge, overheated location, SF ₆ gas purity, SF ₆ corresponding to the above inspection and analysis results Gas moisture content, SF ₆ Analyzing key factors including at least one of the gas SO ₂ content
Switchgear soundness evaluation method comprising a. The method according to claim 9,
Analyzing the key factors
Setting and managing a standard value for distinguishing normal from abnormal for each of the key factors; And
Determining whether a result analyzed by the inspection and analysis information unit corresponds to a normal state or an abnormal state based on the standard value
Switchgear soundness evaluation method further comprising. The method according to claim 8,
Calculating the health of each switchgear
Switching device soundness evaluation method characterized in that for calculating the weight for each key factor by using the health level correlation score that scores the correlation between the rating score for each key factor and the health rating for each evaluation list. The method according to claim 8,
Calculating the health of each switchgear
Setting priorities according to specific criteria for evaluating expertise for each core factor with respect to the weight for each core factor;
Calculating the final weight for each key factor by applying the priority to the weight for each key factor; And
Calculating the soundness of the switchgear based on the final weight
Switchgear soundness evaluation method comprising a. The method according to claim 8,
After calculating the soundness of each switchgear, calculating statistics corresponding to the state of the switchgear based on the soundness of the switchgear; And
Displaying at least one of the statistics calculated by calculating the statistics
Switchgear soundness evaluation method further comprising.

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