KR101912742B1 - Assessment Method and System of Safety Level of High Voltage Electrical Facilities - Google Patents

Abstract

The present invention relates to a method and system for evaluating the safety level of an extra-high voltage electrical equipment capable of reflecting real-time environmental data and reflecting the application of weighting factors and environmental factors of the target facilities and evaluation factors. AHP method is used to calculate the safety score for the target facility by applying the weight, and the weight is corrected by reflecting the external environment real time data and the final safety grade is corrected.

Description

[0001] The present invention relates to a method and system for evaluating the safety level of a high-

The present invention relates to the evaluation of the safety level of a high-voltage electrical equipment, and relates to a method and system for evaluating the safety level of an extra-high voltage electrical equipment that can reflect real-time environmental data and reflect the weighting application and environmental factors of the target equipment and evaluation factors.

Prior Art (Patent Registration No. 10-1636772) relates to a system and method for evaluating a lightning arrester facility equipped with an electrical safety index, and a lightning arrester facility equipped with an electrical safety index to perform an appropriate evaluation of a lightning arrester system configuration of IEC62305 System and method thereof.

It is possible to quantify the degree of safety by classifying the lightning protection system into five systems of air-termination, down-conductor, grounding, equipotential bonding, and SPD and confirm the detailed safety index for each part constituting the lightning protection system. The system can be applied to the objectively standardized system through the application method of the lightning protection system, and it is possible to provide the safety rating of the evaluation object through the safety index of each part for the lightning protection system and the total safety index It is effective.

However, since the measured values measured for each component of the lightning protection system are numerically expressed by the safety index using the fixed reference value, reliability of the safety grade is degraded due to failure to reflect changes in the use environment conditions. It is not possible to present a status rating.

In addition, in addition to the environmental conditions, it is necessary that the statistical data of external weather or electric equipment accident is reflected in real time in the evaluation. However, when the conventional technology is searched, such statistical data is utilized only in the electric power demand prediction and solar power generation fields. Improvement in safety rating of high-voltage electrical equipment is urgent.

Korean Patent No. 1636772

The present invention derives the safety level by reflecting the weight adjustment of each evaluation element of the high voltage electrical equipment and the environmental factors and further adding the weight and the safety grade by reflecting the real-time environmental statistical data such as the electric facility accident statistical data and the weather station statistics data A method and system for evaluating the safety level of an extra-high voltage electrical equipment.

The present invention relates to a method for controlling a high voltage electrical equipment, ii) obtaining an independent evaluation score for each evaluation element of the target facility; iii) calculating a weight using the AHP technique for the target facility and the evaluation factor; iv) calculating the safety score of the target facility by applying the weight to the independent evaluation score of each evaluation factor and summing the scores of the evaluation factors belonging to the same target facility; v) setting an evaluation factor according to the use environment condition for each target facility and deriving an environmental factor score; vi) correcting the safety degree score of the target facility by reflecting the safety score of the target facility in the step iv) and the environmental element evaluation score of the step v); vii) deriving the safety rating of the high-voltage electrical equipment after applying the weights of the target equipment to the safety degree score of the target equipment corrected in the step vi); And viii) correlating real-time environmental statistical data to correct the safety rating; And a method for evaluating the safety level of an extra-high voltage electrical equipment.

According to another aspect of the present invention, there is provided a system for evaluating safety ratings of an extra-high voltage electrical equipment including data processing means based on a computer network connected to a special high voltage equipment, A setting unit for obtaining an independent evaluation score for each evaluation element of the target facility; A weight calculation unit for calculating a weight using the AHP scheme for the target facility and the evaluation factor; A first calculation unit for applying the weight to the independent evaluation score of each evaluation factor and summing the scores of evaluation factors belonging to the same target facility to calculate a safety score for each facility; A second computing unit for setting an evaluation factor according to use environment conditions for each target facility and deriving an environmental element evaluation score; A third calculation unit for correcting the safety degree score of the target facility by reflecting the safety degree score of the target facility and the environmental factor evaluation score; A fourth calculator for calculating a safety rating of an extra-high voltage electrical equipment by applying a weight for each of the target equipments to the corrected safety score of the target equipment, And a fifth arithmetic unit for correlating real-time environmental statistical data with the safety level.

It is possible to evaluate the safety rating of each high-voltage electrical equipment at each facility by deriving the evaluation score for the evaluation factors for each target facility by reflecting the environmental conditions and reflecting the data such as real-time thinking and climate. The reliability of the safety level of the electrical equipment can be fundamentally improved.

In addition, it is possible to generate profit through activation of safety diagnosis through securing and managing objective electric safety of special high-voltage electrical equipment, and it is possible to establish basis for effective disaster reduction and objective electric safety assurance and management through risk factor and risk factor management Do.

1 is a process flow chart of a safety rating evaluation method according to the present invention.
FIG. 2 is a hierarchical structure diagram between a target facility and evaluation elements of a safety grade evaluation according to the present invention. FIG.
3 to 7 are diagrams illustrating the process of evaluating the safety level of the target high-voltage electrical equipment according to the present invention.
8 is a diagram illustrating a process of deriving a safety level.
9 is a diagram illustrating a process of correcting the safety level in association with external data.
10 is a configuration diagram of the safety rating system according to the present invention.

The present invention proposes a safety rating evaluation method and system that is optimized for extra-high voltage electrical equipment and adaptable to changes in the electrical environment such as climate, and the technical idea will be described in detail with reference to the drawings.

FIG. 1 is a flowchart of a method for evaluating the safety level of an extra-high voltage electrical equipment according to the present invention. The process includes setting an evaluation factor for each equipment (s10), acquiring an independent evaluation score for each evaluation factor (s20) (S60), safety factor score (s60), safety level deriving step (s70), and safety level correction step (s80). .

The evaluation factor setting step (s10) for each target facility sets an evaluation factor for each target facility of the extra-high voltage electrical equipment, and the target equipment or evaluation factor can be divided into two or more hierarchical levels. In this case, It is based on the independent evaluation score of the final stage evaluation factor for each facility.

That is, the target facility of the extra-high voltage electrical equipment includes a lead wire, a switch, a MOF, a breaker, and a transformer. In the case of the lead wire, the lead wire may be divided into a machining lead wire and an underground lead wire. The target facility can be selected as the final stage mold transformer and the inflow transformer. The evaluation element can be further subdivided from the first stage evaluation element in the same way and the evaluation is performed based on the final evaluation element.

In the step of acquiring the independent evaluation score by evaluation element (s20), the independent evaluation score of each evaluation element is acquired and set. When the hierarchy of the target facility is subdivided into two or more stages, the independent evaluation Score.

FIG. 2 is a diagram illustrating a structure in which the evaluation element is layered in two levels. The safety grade deriving process is performed based on the independent evaluation score of the sub-evaluation elements, and weight is set for all the target facilities and evaluation elements.

The weight calculation step s30 may calculate the weight using the AHP technique and correct the weight using the real-time external environment statistical data such as the electric equipment accident statistics and the weather station statistics .

The weighting method by the AHP technique is as follows.

(Step 1) Determine the content and quantity of the item to be evaluated.

개 이다.(Step 2) A pair comparison is made based on the importance between items to be evaluated. At this time, a questionnaire table for the comparison of the pair should be prepared and the score of each response is determined. If the number of items to be evaluated is n, the number of surveys is

It is a dog.

(Step 3) Create an n × n matrix with the derived values from the pair comparison.

(Step 4) Divide each element of the matrix by the sum of the columns. (nxn matrix)

(Step 5) The average of each row is obtained. (NX1 matrix)

(Step 6) Calculate the Consistency Index (CI). Here, CI = (? - n) / (n-1), and? Is derived in the following order.

   (Step 6-1) and the matrix derived in (step 3) and the matrix derived in (step 5). (n by 1 matrix)

   (Step 6-2) Divide each element of the matrix derived in (step 6-1) by each element of the matrix obtained in (step 5).

   (Step 6-3) and obtains the average value of the matrix obtained in (step 6-2).

(Step 7) If CI? 0.1, the value calculated in (Step 5) is selected as the weight, and if CI> 0.1, the calculated value is excluded from the weight.

The safety score calculation step (s40) of the target facility applies the weight to the independent evaluation score of each evaluation factor, and calculates the safety score of the target facility by adding the scores of the evaluation factors belonging to the same target facility.

The environmental factor score calculation step (s50) sets the evaluation factor according to the use environment conditions for each target facility, derives the score of the environmental factor, and the evaluation factor according to the use environment condition includes the usage period, load factor, . The environmental factor score also reflects the weight according to the present invention.

In the safety degree score correction step (s60) for each target facility, the safety degree score of the target facility is corrected by reflecting the safety degree score of the target facility and the environmental factor evaluation score.

Fig. 3 shows an example of calculation of the safety degree score for the lead-in line as the target facility, and the lead-in line is subdivided into the processing lead-in line and the ground lead-in line.

The evaluation factor of the processing lead-in line and the underground lead-in line is the same, but there is a difference in the weight, and the safety degree score of the lead-in line is obtained by multiplying the independent evaluation score of the target facility by the weighted value, The safety factor score of the target facility is corrected by multiplying the environmental factor evaluation score calculated by applying the weighting factor of the evaluation factor according to the use environment condition included.

FIG. 4 is a diagram illustrating the process of computing the safety score of the switch, which is divided into an inlet switch and a failure switch. It can be seen that the evaluation factor and the weight are differently applied.

In addition, evaluation factors of the environmental factor evaluation are the same, but it can be understood that the applied weight is different according to the target facility.

FIG. 5 is a diagram illustrating the process of calculating the safety degree of the MOF as a target facility. The evaluation factor is the appearance and installation state, the overcurrent intensity of the current transformer, the MOF selection evaluation, the insulation state, Is reflected.

FIG. 6 is a diagram illustrating the process of calculating the degree of safety of a circuit breaker as a target facility. It is assumed that the appearance state, the installation state, the breaker operation state, the insulation state and the grounding state are used as the evaluation factors and the environmental factors applying the weight calculated by the AHP technique It reflects the evaluation score.

Fig. 7 shows an example of safety score calculation for a transformer as a target facility. The target facility is subdivided into a mold transformer and an inflow transformer, and each weight is applied. The score of the environmental factor is finally reflected, Corrected.

 In the safety level deriving step (s70), as shown in FIG. 8, the safety level of the high-voltage electrical equipment is derived by applying the weights of the target equipment to the corrected safety degree score of the target equipment and summing them.

The following table is an example of the safety level derivation standard and can be set for each scoring scale.

9, the safety level correction step (s80) is to correct the safety level by linking real-time environmental statistical data, as shown in FIG. 9, where the real-time environmental statistical data includes weather station statistics data and electrical equipment accident statistical data .

According to another aspect of the present invention, there is provided an extra-high voltage electrical equipment safety rating evaluation system including a data processing unit based on a computer network connected to a special high voltage equipment. As shown in FIG. 10, A weight calculator 20, a first calculator 30, a second calculator 40, a third calculator 50, a fourth calculator 60 and a fifth calculator 70.

The high-voltage electrical equipment safety class evaluation system is a set of means for performing the above-described safety class evaluation method.

The setting unit 10 is a means for setting an evaluation factor for each target facility of the extra-high voltage electrical equipment and acquiring an independent evaluation score for each evaluation factor of the target facility. The target equipment or evaluation factor is divided into two or more hierarchical levels And sets the independent evaluation score of the final stage evaluation factor for the target equipment at the final stage.

The target facility of the extra-high voltage electrical equipment includes a lead wire, a switch, a MOF, a breaker, and a transformer.

The weight calculation unit 20 calculates a weight value using the AHP technique for the target facility and the evaluation factor, and can correct the weight using real-time external environment statistics data such as electric facility accident statistics and weather station statistics.

The first calculation unit 30 calculates the safety score of the target facility by applying the weight to the independent evaluation score for each evaluation factor and adding the scores of the evaluation factors belonging to the same target facility.

The second arithmetic unit 40 sets an evaluation factor according to the use environment condition for each target facility and derives an environmental factor evaluation score, and the evaluation factor according to the use environment condition may include a usage period, a load factor, a region, and an industry . The environmental factor evaluation score of the second operation unit also reflects the weight according to the present invention for each evaluation factor.

The third arithmetic unit 50 corrects the safety degree score of the target facility by reflecting the safety degree score of the target facility and the environmental factor evaluation score and the fourth arithmetic unit 60 corrects the safety degree score of the target facility After applying the weights to the target facilities, the safety rating of the high voltage electrical equipment is derived.

The fifth calculation unit 70 correlates real-time environmental statistical data to correct the safety level. The real-time environmental statistical data includes meteorological station statistics data and electrical equipment accident statistical data.

10: setting unit 20: weight calculating unit
30: first calculation unit 40: second calculation unit
50: third arithmetic section 60: fourth arithmetic section
70: fifth calculation section

Claims (14)

A method for evaluating electrical safety of a high-voltage electrical equipment safety grade evaluation system including data processing means based on a computer network connected to a high-voltage equipment,
i) setting an evaluation factor for the target equipment of the high voltage electrical equipment;
ii) obtaining an independent evaluation score for each evaluation element of the target facility;
iii) calculating weights using the AHP technique for the target facility and evaluation factors, and correcting the calculated weights using real-time external environment statistical data;
iv) calculating the safety score of the target facility by applying the weight to the independent evaluation score of each evaluation factor and summing the scores of the evaluation factors belonging to the same target facility;
v) setting an evaluation factor according to the use environment condition for each target facility and deriving an environmental factor score;
vi) correcting the safety degree score of the target facility by reflecting the safety score of the target facility in the step iv) and the environmental element evaluation score of the step v);
vii) deriving the safety rating of the high-voltage electrical equipment after applying the weights of the target equipment to the safety degree score of the target equipment corrected in the step vi); And
viii) correcting the safety level by linking real-time environmental statistical data; Lt; / RTI >
The safety score of the target facility, which is calculated by multiplying the independent evaluation score of each target facility in step vi) by the weight, is added to each of the evaluation factors according to the usage environment conditions including the usage period, load ratio, A method for evaluating the safety level of an extra-high voltage electrical equipment in which a weight is multiplied, and then the result is multiplied by the calculated score of the environmental factor. The method according to claim 1,
Wherein said target facility or evaluation element is subdivided into a hierarchical structure of two or more levels and processed based on the independent evaluation score of the final stage evaluation element of each target facility at the final stage. 3. The method of claim 2,
The target equipment and evaluation elements of the above-mentioned hierarchical high voltage electrical equipment include a lead wire, a switch, a MOF, a breaker, and a transformer,
The two-stage target facility for the lead-in wire is a process lead-in line and an underground lead-in line,
The target facility of the second stage for the switch is an inlet switch and a fault section switch,
The evaluation factors for the MOF are the appearance and installation state, the overcurrent strength of the current transformer, the MOF selection evaluation, the insulation state, and the ground state,
The evaluation element for the circuit breaker is an appearance state, an installation state, a breaker operation state, an insulation state and a ground state,
The method of claim 1, wherein the target facility of the second stage for the transformer is subdivided into a mold transformer and an inflow transformer. delete delete delete The method according to claim 1,
Wherein the real-time environmental statistical data includes Meteorological Administration statistical data and electrical equipment accident statistical data. A high-voltage electrical equipment safety rating system comprising a computer network-based data processing means connected to a high-voltage equipment,
A setting unit for setting an evaluation factor for each target facility of the extra high voltage electrical equipment and obtaining an independent evaluation score for each evaluation factor of the target equipment;
A weight calculation unit for calculating weights using the AHP scheme for the target facility and the evaluation factors and correcting the calculated weights using real-time external environment statistical data;
A first calculation unit for applying the weight to the independent evaluation score of each evaluation factor and summing the scores of evaluation factors belonging to the same target facility to calculate a safety score for each facility;
A second computing unit for setting an evaluation factor according to use environment conditions for each target facility and deriving an environmental element evaluation score;
A third calculation unit for correcting the safety degree score of the target facility by reflecting the safety degree score of the target facility and the environmental factor evaluation score;
A fourth calculator for calculating a safety rating of an extra-high voltage electrical equipment by applying a weight for each of the target equipments to the corrected safety score of the target equipment, And
And a fifth operation unit for correlating the real-time environment statistical data to correct the safety level,
The safety score of the target facility, which is calculated by multiplying the independent evaluation score of each target facility by the weight, is multiplied by each weighting factor according to each use environment condition including usage period, load rate, region and industry, And then multiplying the calculated score by the environmental element evaluation score. 9. The method of claim 8,
Wherein the target facility or evaluation element is subdivided into two or more hierarchical levels and the independent evaluation score of the final stage evaluation element of the final stage of the target facility is processed. 10. The method of claim 9,
The target equipment and evaluation elements of the above-mentioned hierarchical high voltage electrical equipment include a lead wire, a switch, a MOF, a breaker, and a transformer,
The two-stage target facility for the lead-in wire is a process lead-in line and an underground lead-in line,
The target facility of the second stage for the switch is an inlet switch and a fault section switch,
The evaluation factors for the MOF are the appearance and installation state, the overcurrent strength of the current transformer, the MOF selection evaluation, the insulation state, and the ground state,
The evaluation element for the circuit breaker is an appearance state, an installation state, a breaker operation state, an insulation state and a ground state,
Wherein the target facilities of the second stage for the transformer are subdivided into a mold transformer and an inflow transformer. delete delete delete 9. The method of claim 8,
The real-time environmental statistical data includes the Meteorological Administration statistical data and the electric facility accident statistical data.

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