CN111638451A - Inference rule-based circuit breaker evaluation method - Google Patents
Inference rule-based circuit breaker evaluation method Download PDFInfo
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Abstract
The invention relates to a circuit breaker evaluation method based on inference rules, which belongs to the technical field of state evaluation of electrical equipment, in particular to a method for carrying out standardized state evaluation on a high-voltage circuit breaker according to the inference rules; the method comprises the following steps: step S1, establishing a starting link, and establishing a flow link and a flow of each test item in a routine test according to the evaluation standard of the circuit breaker; step S2, encoding the judgment items, the inspection results and the deduction principle to form a unique label corresponding to the index; s3, coding the input data, dynamically processing the input data by an expression in a judgment link, and selecting a subsequent link according to a processing result; and step S4, calculating to obtain the score of the circuit breaker after all the circulation links and the judgment conditions are completed. The invention forms a visual, programmable, quantifiable and iterative reasoning mode, directly judges and transfers the test result of the circuit breaker and provides a basis for the state maintenance of the circuit breaker.
Description
Technical Field
The invention belongs to the technical field of state evaluation of electrical equipment, and particularly relates to a method for carrying out standardized state evaluation on a high-voltage circuit breaker according to an inference rule.
Background
The circuit breaker is a switching device capable of closing, carrying, and opening/closing a current under a normal circuit condition and a current under an abnormal circuit condition within a prescribed time. The circuit breaker can be used for distributing electric energy, starting an asynchronous motor infrequently, protecting a power supply circuit, the motor and the like, and automatically cutting off a circuit when faults such as serious overload, short circuit, undervoltage and the like occur, and the function of the circuit breaker is equivalent to the combination of a fuse type switch, an over-under-heat relay and the like. Furthermore, no parts need to be changed after breaking the fault current.
The circuit breaker is used as a switching device for bearing normal working current and opening and closing short-circuit current in a power system, has an important function, and the state of the circuit breaker directly influences the safe and stable operation of the power system. At present, the evaluation of the circuit breaker is based on an evaluation method in the 2 nd itemized circuit breaker lean evaluation detailed rule of the national grid company transformation evaluation management regulation (trial) of the national grid company (national grid (operation and inspection/3) 830-2017), but each item needs to be manually scored against a test report during the execution of the method, so that on one hand, human errors inevitably occur, and on the other hand, the evaluation result is difficult to guarantee standardization.
Disclosure of Invention
The invention aims to provide a circuit breaker evaluation method based on inference rules, which aims to solve the technical problems that manual errors inevitably occur and standardization is difficult to guarantee when each item is manually scored according to a test report.
In order to achieve the purpose, the specific technical scheme of the inference rule-based circuit breaker evaluation method is as follows:
a circuit breaker evaluation method based on inference rules comprises the following steps, and the following steps are carried out in sequence:
step S1, establishing a starting link which is a necessary link in each model, and establishing a flow link and a flow of each test item in a routine test according to the evaluation standard of the circuit breaker;
s2, encoding the circulation link in the step S1 through judging items, checking results and a deduction principle to form a unique label corresponding to the index;
establishing a reasoning rule, judging the category of the classification according to the index coding rule by using an expression, judging whether the items are opposite and have no intersection, and automatically circulating to a corresponding link;
step S3, inputting data into the flow completed in the step S2, and coding the data in a JSON format, wherein a test item field stores a judgment item code of an 'evaluation rule' of the current input data, a judgment link dynamically processes the input data in an expression mode, and a subsequent link is selected according to a processing result;
the routine test is divided into a plurality of test items, and after the expression is judged, the following corresponding test item links are entered according to the input data.
And step S4, after all circulation links and judgment conditions of the input data in the step S3 are completed, calculating to obtain a score of the circuit breaker, realizing intellectualization and standardization of the state evaluation of the circuit breaker, and simultaneously, clearly displaying the score deduction items to provide guidance suggestions for state maintenance.
Further, the circuit breaker evaluation standard is an evaluation method in the 2 nd branch book circuit breaker lean evaluation detailed rule of the national grid company transformation evaluation management regulation (trial) 830-2017 (national grid (operation/3)).
Further, the test items in the routine test comprise a secondary circuit insulation resistance test, a switching-on and switching-off coil test, a conductive circuit resistance measurement test, an operating voltage test, a mechanical characteristic test, a voltage-sharing capacitance test, a switching-on resistance test and an SF6 gas humidity test.
Further, when the routine test is judged to be a secondary loop insulation resistance test, the routine test is transferred to the link, the link belongs to a branch judgment link, whether the input secondary loop insulation resistance is more than or equal to 2 MOmega or not is judged at the moment, and the secondary loop insulation resistance is qualified and not deducted; otherwise unqualified, deducting 2 points;
and connecting to the ending step after judging and calculating.
Further, when the routine test is judged to be a switching-on/off coil test, the routine test is transferred to the link, and the routine test is carried out inference judgment according to keywords of insulation resistance and direct current resistance and transferred to the next-stage link;
judging whether the insulation resistance value is larger than or equal to 10M omega in the step of dividing and closing the insulation resistance of the coil, if so, determining that the insulation resistance value is qualified and not deducting; otherwise unqualified, deducting 2 points;
judging whether the deviation of the direct current resistance value and the initial value is less than or equal to 5% in the step of dividing and closing the direct current resistance of the brake coil, if so, determining that the direct current resistance value is qualified and not dividing; otherwise unqualified, deducting 2 points;
in the link, the upper limit of the fraction is deducted for 2 minutes, and the step is connected to the ending step after judgment and calculation are finished.
Further, when the routine test is judged to be a loop resistance test, the routine test is transferred to the link, whether the routine test meets the technical protocol and the specified value of a manufacturing factory is judged, and if the routine test meets the technical protocol and the specified value of the manufacturing factory, the routine test is qualified and not deducted; otherwise unqualified, deducting 2 points;
and connecting to the ending step after judging and calculating.
Further, when the routine test is judged to be an operation voltage test, the routine test is transferred to the link, and the routine test is inferentially judged according to expressions such as switching-on, switching-off and action voltage and transferred to the next link;
the 'action voltage of the closing release' link judges that the closing release can reliably act within the range of 85-110% of rated voltage, if yes, the closing release is qualified, and the closing release is not buckled; otherwise unqualified, deducting 2 points;
the 'action voltage of the opening tripper' link judges that the opening tripper can reliably act in the range of 65-110% (direct current) or 85-110% (alternating current) of the rated voltage, if yes, the opening tripper is qualified, and the opening tripper is not buckled; otherwise unqualified, deducting 2 points;
in the step of 'no operating voltage', the power supply voltage is judged not to be tripped when being reduced to 30% of a rated value, if the power supply voltage is reduced to be qualified, the power supply voltage is not tripped; otherwise unqualified, deducting 2 points;
in the link, the upper limit of the fraction is deducted for 2 minutes, and the step is connected to the ending step after judgment and calculation are finished.
Further, when the routine test is judged to be a voltage-sharing capacitor test, the routine test is transferred to the link, and at the moment, the initial value difference of the capacitance is judged to be not more than 5%, the dielectric loss factor of the oil-impregnated paper is not more than 0.005, and the composite dielectric loss factor of the membrane paper is not more than 0.0025, the initial value difference is qualified and not more than the 5%, the dielectric loss factor of the oil-impregnated paper is not more than 0
If one is unqualified, deducting 2 points and limiting the upper limit by 2 points;
and connecting to the ending step after judgment and calculation are finished.
Further, when the routine test is judged to be a mechanical characteristic test, the routine test is transferred to the link, and the routine test is carried out inference judgment according to expressions of switching-on, switching-off and synchronism and transferred to the next-stage link;
the 'switching-on different-phase' link judges that the switching-on different phase is less than or equal to 5ms and the switching-on different phase between the fractures is less than or equal to 3ms, if so, the product is qualified and is not broken; otherwise unqualified, deducting 2 points;
the 'switching-off different-period' link judges that the switching-off different period between phases is less than or equal to 3ms and the switching-off different period between the same-phase fractures is less than or equal to 2ms, if yes, the product is qualified, and no switching-off is carried out; otherwise unqualified, deducting 2 points;
the 'closing time' link judges whether the closing time meets the specified value of the manufacturer, if yes, the closing time is qualified, and the closing time is not deducted; otherwise unqualified, deducting 2 points;
the 'brake separating time' link judges whether the brake separating time meets the specified value of a manufacturer, if so, the brake separating time is qualified, and the brake separating time is not deducted; otherwise unqualified, deducting 2 points;
the 'close-divide time' link judges whether the close-divide time meets the specified value of the manufacturer, if so, the product is qualified, and the score is not deducted; otherwise unqualified, deducting 2 points;
in the link, the upper limit of the fraction is deducted for 2 minutes, and the step is connected to the ending step after judgment and calculation are finished.
Further, when the routine test is judged to be a 'closing resistor' test, the routine test is transferred to the link, and whether the difference between the resistance value of the closing resistor and the initial value is less than or equal to 5% is judged at the moment, if so, the routine test is qualified, and the routine test is not broken; otherwise unqualified, deducting 2 points;
and connecting to the ending step after judging and calculating.
Further, when the routine test is judged to be an SF6 gas humidity test, the flow is transferred to the link, at the moment, whether the SF6 gas humidity is less than 300 muL/L is judged, if yes, the product is qualified, and no deduction is made; otherwise unqualified, deducting 2 points;
and connecting to the ending step after judging and calculating.
The streaming computation engine, also known as a data stream engine, can model program the data stream and provide processing on the data set. The engine can forward, calculate and judge the data set, and finally return the result according to the rule circulation. The model of the data stream may be dynamically modified during operation.
The circuit breaker evaluation method based on the inference rule has the following advantages that:
the breaker state evaluation method based on the inference rule adopts a data flow engine, model programming is carried out on key words and data in a test report to form a data set, the data set is forwarded, calculated and judged, the data flow in the engine is transmitted through messages among nodes, the engine coupling is lower than that of the traditional engine, the reliability and fault tolerance are higher, the operation among the models cannot be influenced mutually, a complete rule is formed through the logic combination of various nodes, the result is finally returned according to the rule flow, the evaluation result is given, and the intellectualization and standardization of the breaker state evaluation are realized.
The established inference rule engine has the advantages of quick response, high resource utilization rate, strong expansibility and flexibility, the model of the engine can be modified during the operation of the system, the modeling is carried out in a graphical mode, the engine is operated in high-concurrency, distributed and fault-tolerant message transmission communication mode, a visual, programmable, quantifiable and iterative inference mode is formed, the test result of the circuit breaker is directly judged and circulated, the evaluation result is objective, and a basis is provided for the state maintenance of the circuit breaker.
Drawings
Fig. 1 is a system block diagram of a circuit breaker evaluation method based on inference rules according to the present invention.
Fig. 2 is a first flowchart of a circuit breaker evaluation method based on inference rules according to the present invention.
Fig. 3 is a second flowchart of the inference rule-based breaker evaluation method of the present invention.
Detailed Description
In order to better understand the purpose, structure and function of the present invention, a circuit breaker evaluation method based on inference rules of the present invention is described in further detail below with reference to the accompanying drawings.
As shown in fig. 1 to fig. 3, Groovy is used as an expression language in basic links such as judgment and calculation in the engine of the present invention, which is a dynamic agile programming language based on the JVM platform, which takes the excellent characteristics of Python, Ruby and Smalltalk languages, and has very simple and elegant syntax and very high development efficiency, and links can be programmed by editing a script online in the links, for example:
project is ═ secondary loop insulation resistance// judgment item
Sqrt (data. values)// square root
According to an evaluation method in the 2 nd branch book breaker lean evaluation detailed rule (national grid company transformation evaluation management regulation (trial) 830-2017), taking a routine test as an example, the illustrated circulation link and flow are established.
The first step is as follows: establishing a starting link which is a necessary link in each model;
the second step is that: the 'evaluation rules' are structured, the evaluation items in the 'evaluation rules' are divided into six parts of contents including technical data, a body, an operating mechanism, a routine test, a lead, a wire clamp and a countermeasure execution according to the general category of the evaluation items, and the evaluation items, the inspection results and the deduction principle of each part are coded to form a unique label corresponding to an index. Establishing a reasoning rule, judging the belonged categories and judging items to be opposite and non-intersecting by using an expression according to an index coding rule, automatically circulating to a corresponding link, and elaborating by using a routine test;
the third step: the input data is coded in a JSON format, wherein a test item field stores a judgment item code of an 'evaluation rule' to which the current input data belongs, the input data is dynamically processed by an expression in a judgment link, and a subsequent link is selected according to a processing result. The routine test is divided into a plurality of test items, and after the expression is judged, the following corresponding test item links are entered according to the input data.
The fourth step: the secondary loop insulation resistance test is transferred to the link, the link belongs to a branch judgment link, whether the input secondary loop insulation resistance is more than or equal to 2M omega or not is judged, and the secondary loop insulation resistance is qualified and not deducted; otherwise, rejecting the product by 2 points. And connecting to the ending step after judging and calculating.
The fifth step: the 'opening and closing coil' is transferred to the link during the test, and the 'insulation resistance' and the 'direct current resistance' key words are used for reasoning, judging and transferring to the next-stage link. Judging whether the insulation resistance value is larger than or equal to 10M omega in the step of dividing and closing the insulation resistance of the coil, if so, determining that the insulation resistance value is qualified and not deducting; otherwise, rejecting the product by 2 points. Judging whether the deviation of the direct current resistance value and the initial value is less than or equal to 5% in the step of dividing and closing the direct current resistance of the brake coil, if so, determining that the direct current resistance value is qualified and not dividing; otherwise, rejecting the product by 2 points. In the link, the upper limit of the fraction is deducted for 2 minutes, and the step is connected to the ending step after judgment and calculation are finished.
And a sixth step: the loop resistance test is transferred to the link, at the moment, whether the loop resistance test accords with the technical protocol and the specified value of a manufacturer is judged, if so, the loop resistance test is qualified, and the loop resistance test is not deducted; otherwise, rejecting the product by 2 points. And connecting to the ending step after judging and calculating.
The seventh step: the operation voltage test is transferred to the link, and the operation voltage test is carried out according to expressions of switching-on, switching-off, action voltage and the like, and the operation voltage test is carried out and transferred to the next link. The 'action voltage of the closing release' link judges that the closing release can reliably act within the range of 85-110% of rated voltage, if yes, the closing release is qualified, and the closing release is not buckled; otherwise, rejecting the product by 2 points. The 'action voltage of the opening tripper' link judges that the opening tripper can reliably act in the range of 65-110% (direct current) or 85-110% (alternating current) of the rated voltage, if yes, the opening tripper is qualified, and the opening tripper is not buckled; otherwise, rejecting the product by 2 points. In the step of 'no operating voltage', the power supply voltage is judged not to be tripped when being reduced to 30% of a rated value, if the power supply voltage is reduced to be qualified, the power supply voltage is not tripped; otherwise, rejecting the product by 2 points. In the link, the upper limit of the fraction is deducted for 2 minutes, and the step is connected to the ending step after judgment and calculation are finished.
Eighth step: the voltage-sharing capacitance test is carried out, the initial value difference of capacitance is judged to be not more than 5%, the dielectric loss factor of oil-impregnated paper is not more than 0.005, and the composite dielectric loss factor of membrane paper is not more than 0.0025, and the conditions are met, qualified and not deducted; one is rejected, minus 2 points, and the upper limit is 2 points. And connecting to the ending step after judging and calculating.
The ninth step: the mechanical characteristic test is transferred to the link, and the mechanical characteristic test is carried out according to expressions such as switching-on, switching-off and synchronism, and the like, and the mechanical characteristic test is carried out on the link and transferred to the next link. The 'switching-on different-phase' link judges that the switching-on different phase is less than or equal to 5ms and the switching-on different phase between the fractures is less than or equal to 3ms, if so, the product is qualified and is not broken; otherwise, rejecting the product by 2 points. The 'switching-off different-period' link judges that the switching-off different period between phases is less than or equal to 3ms and the switching-off different period between the same-phase fractures is less than or equal to 2ms, if yes, the product is qualified, and no switching-off is carried out; otherwise, rejecting the product by 2 points. The 'closing time' link judges whether the closing time meets the specified value of the manufacturer, if yes, the closing time is qualified, and the closing time is not deducted; otherwise, rejecting the product by 2 points. The 'brake separating time' link judges whether the brake separating time meets the specified value of a manufacturer, if so, the brake separating time is qualified, and the brake separating time is not deducted; otherwise, rejecting the product by 2 points. The 'close-divide time' link judges whether the close-divide time meets the specified value of the manufacturer, if so, the product is qualified, and the score is not deducted; otherwise, rejecting the product by 2 points. In the link, the upper limit of the fraction is deducted for 2 minutes, and the step is connected to the ending step after judgment and calculation are finished.
The tenth step: the 'closing resistor' test is transferred to the link, and whether the difference between the resistance value of the closing resistor and the initial value is less than 5 percent or not is judged at the moment, if so, the closing resistor is qualified, and the closing resistor is not buckled; otherwise, rejecting the product by 2 points. And connecting to the ending step after judging and calculating.
The eleventh step: the flow is transferred to the link when the test of the SF6 gas humidity is carried out, whether the SF6 gas humidity is less than 300 mu L/L or not is judged at the moment, and if the SF6 gas humidity is less than 300 mu L/L, the SF is qualified and not deducted; otherwise, rejecting the product by 2 points. And connecting to the ending step after judging and calculating.
The twelfth step: after all circulation links and judgment conditions are completed, circuit breaker scores are calculated, the intellectualization and standardization of circuit breaker state evaluation are realized, meanwhile, the deduction items are clearly displayed, and guidance suggestions are provided for state maintenance.
Example (b):
the application scene and the evaluation result of the method are explained by taking the routine overhaul test result of a certain transformer substation as an example.
Inputting the content: a220 kV transformer substation 2331 interval breaker A-phase secondary circuit insulation resistance value is 10 MOmega, a closing coil insulation resistance is 22 MOmega, an opening coil insulation resistance is 24 MOmega, a closing coil direct-current resistance is 52 MOmega, a closing coil delivery value is 53 MOmega, an opening coil direct-current resistance is 58 MOmega, a closing coil delivery value is 58 MOmega, a conductive circuit resistance test value is 85 MOmega, a specified value is 120 MOmega, and SF6 gas humidity is 420 MOmega/L.
And outputting a result: the secondary loop insulation resistance test is qualified; the opening and closing coil is qualified in the test; the resistance test of the conductive loop is qualified; the SF6 gas test is unqualified, the result exceeds 120 mu L/L, and the score is 2. Routine tests were carried out for 2 points, suggesting enhanced monitoring of SF6 gas humidity, and replacement processing if necessary.
It is to be understood that the present invention has been described with reference to certain embodiments, and that various changes in the features and embodiments, or equivalent substitutions may be made therein by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (10)
1. The circuit breaker evaluation method based on the inference rule is characterized by comprising the following steps which are sequentially carried out:
step S1, establishing a starting link, and establishing a flow link and a flow of each test item in a routine test according to the evaluation standard of the circuit breaker;
s2, encoding the circulation link in the step S1 through judging items, checking results and a deduction principle to form a unique label corresponding to the index;
establishing a reasoning rule, judging the category of the classification according to the index coding rule by using an expression, judging whether the items are opposite and have no intersection, and automatically circulating to a corresponding link;
step S3, inputting data into the flow completed in the step S2, coding the data in a JSON format, dynamically processing the input data by an expression in a judgment link, and selecting a subsequent link according to a processing result;
the routine test is divided into a plurality of test items, and after the expression is judged, the following corresponding test item links are entered according to the input data;
and step S4, after all circulation links and judgment conditions of the input data in the step S3 are completed, calculating to obtain a score of the circuit breaker, realizing intellectualization and standardization of the state evaluation of the circuit breaker, and clearly displaying the score deduction items.
2. The inference rule-based circuit breaker evaluation method according to claim 1, wherein the test items in the routine tests comprise a secondary circuit insulation resistance test, a switching coil test, a conductive circuit resistance measurement test, an operating voltage test, a mechanical characteristic test, a voltage-sharing capacitance test, a switching resistance test and an SF6 gas humidity test.
3. The inference rule-based circuit breaker evaluation method according to claim 2, wherein when the routine test is judged to be a secondary circuit insulation resistance test, the routine test is transferred to the link, whether the input secondary circuit insulation resistance is larger than or equal to 2M Ω is judged, and if yes, the circuit breaker evaluation method is qualified and not deducted; otherwise unqualified, deducting 2 points; and connecting to the ending step after judging and calculating.
4. The inference rule-based circuit breaker evaluation method according to claim 3, wherein when the routine test is judged to be a switching-on and switching-off coil test, the routine test is transferred to the link, and the routine test is reasoned and transferred to the next link according to keywords of insulation resistance and direct current resistance;
judging whether the insulation resistance value of the opening and closing coil is larger than or equal to 10M omega, if so, determining to be qualified, and not deducting; otherwise unqualified, deducting 2 points;
judging whether the deviation of the direct current resistance value and the initial value is less than or equal to 5% in the direct current resistance link of the opening and closing coil, if so, determining that the direct current resistance value is qualified and not buckled; otherwise unqualified, deducting 2 points;
in the link, the upper limit of the fraction is deducted for 2 minutes, and the step is connected to the ending step after judgment and calculation are finished.
5. The inference rule-based circuit breaker evaluation method according to claim 2, wherein when the routine test is judged to be a loop resistance test, the routine test is transferred to the link, and at this time, whether the routine test meets technical protocols and manufacturing plant specified values is judged, and if yes, the routine test is qualified and not deducted; otherwise unqualified, deducting 2 points; and connecting to the ending step after judging and calculating.
6. The inference rule-based circuit breaker evaluation method according to claim 4, wherein when the routine test is judged to be an operation voltage test, the routine test is transferred to the link, and the routine test is inferentially judged according to expressions of switching-on voltage, switching-off voltage and action voltage and transferred to a next link;
judging whether the closing release can reliably act within the range of 85-110% of rated voltage in the action voltage link of the closing release, if so, determining that the closing release is qualified and not buckled; otherwise unqualified, deducting 2 points;
the action voltage link of the opening tripper judges that the opening tripper reliably acts in the range of 65-110% direct current or 85-110% alternating current of the rated voltage, if yes, the opening tripper is qualified, and the opening tripper is not buckled; otherwise unqualified, deducting 2 points;
in the non-action voltage link, judging that the power supply voltage is not to be tripped when the power supply voltage is lower than 30% of a rated value, if the power supply voltage is lower than the rated value, the power supply voltage is qualified, and the power supply voltage is not to be tripped; otherwise unqualified, deducting 2 points;
in the link, the upper limit of the fraction is deducted for 2 minutes, and the step is connected to the ending step after judgment and calculation are finished.
7. The inference rule-based circuit breaker evaluation method according to claim 2, wherein when the routine test is judged to be a voltage-sharing capacitance test, the routine test is transferred to the link, and at the moment, the judgment is carried out to judge that the initial value difference of capacitance is not more than 5%, the dielectric loss factor of oil-impregnated paper is not more than 0.005, and the composite dielectric loss factor of membrane paper is not more than 0.0025, if the initial value difference of capacitance is not more than 5%, the dielectric loss factor of oil-impregnated paper is not more than 0
If one is unqualified, deducting 2 points and limiting the upper limit by 2 points; and connecting to the ending step after judgment and calculation are finished.
8. The inference rule-based circuit breaker evaluation method according to claim 7, wherein when the routine test is judged to be a mechanical characteristic test, the routine test is transferred to the link, and the routine test is reasoned and judged according to expressions of closing, opening and synchronization and transferred to the next link;
judging whether the inter-phase switching-on different period is less than or equal to 5ms and the in-phase switching-on different period between each fracture is less than or equal to 3ms by the switching-on different period link, if so, determining to be qualified and not deducting; otherwise unqualified, deducting 2 points;
the brake-separating different-phase link judges that the phase brake-separating different phase is less than or equal to 3ms and the phase brake-separating different phase is less than or equal to 2ms, if yes, the product is qualified, and no brake is deducted; otherwise unqualified, deducting 2 points;
the closing time link judges whether the closing time meets the specified value of the manufacturer, if yes, the closing time is qualified, and the closing time is not deducted; otherwise unqualified, deducting 2 points;
the switching-off time link judges whether the switching-off time meets the specified value of a manufacturer, if so, the switching-off time is qualified, and the switching-off time is not deducted; otherwise unqualified, deducting 2 points;
the joint-dividing time link judges whether the joint-dividing time meets the specified value of the manufacturer, if so, the joint-dividing time is qualified, and the joint-dividing time is not deducted; otherwise unqualified, deducting 2 points;
in the link, the upper limit of the fraction is deducted for 2 minutes, and the step is connected to the ending step after judgment and calculation are finished.
9. The inference rule-based circuit breaker evaluation method according to claim 2, wherein when the routine test is judged to be a closing resistor test, the routine test is transferred to the link, and at the moment, whether the difference between the resistance value of the closing resistor and the initial value is not more than 5% is judged, and if yes, the routine test is qualified, and the routine test is not deducted; otherwise unqualified, deducting 2 points; and connecting to the ending step after judging and calculating.
10. The inference rule-based circuit breaker evaluation method according to claim 9, wherein when the routine test is "SF 6 gas humidity" test, the flow is routed to the link, and at this time, whether SF6 gas humidity is less than 300 μ L/L is judged, and if yes, the circuit breaker evaluation method is qualified and not deducted; otherwise unqualified, deducting 2 points; and connecting to the ending step after judging and calculating.
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