Circuit breaker evaluation method based on inference rule
An evaluation method and circuit breaker technology, which is applied in circuit breaker testing, instrumentation, and high resistance measurement, etc., can solve the problems of human errors that are difficult to ensure standardization, and achieve objective evaluation results, strong scalability and flexibility, and resources The effect of high utilization
Pending Publication Date: 2020-09-08
JILIN ELECTRIC POWER RES INST +3
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Problems solved by technology
[0004] The purpose of the present invention is to provide a circuit breaker evaluation method based on inference rules to solve the technical problems of artificially scoring each item one by one according to the test report, which inevitably causes human errors and is difficult to ensure standardization
Method used
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Embodiment
[0067] The application scenarios and evaluation results of this method are illustrated by taking the results of a routine maintenance test in a substation as an example.
[0068] Input content: A phase secondary circuit insulation resistance value of 2331 bay circuit breaker in a 220kV substation is 10MΩ, closing coil insulation resistance is 22MΩ, opening coil insulation resistance is 24MΩ, closing coil DC resistance is 52Ω, closing coil factory value is 53Ω, opening coil The DC resistance of the coil is 58Ω, the factory value of the closing coil is 58Ω, the test value of the conductive circuit resistance is 85μΩ, the specified value is 120μΩ, and the humidity of SF6 gas is 420μL / L.
[0069] Output results: The secondary circuit insulation resistance test is qualified; the opening and closing coil test is qualified; the conductive circuit resistance test is qualified; the SF6 gas test is unqualified, and the result exceeds the standard by 120μL / L, and 2 points will be deducted...
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The invention discloses a circuit breaker evaluation method based on an inference rule, belongs to the technical field of electrical equipment state evaluation, and particularly relates to a method for carrying out standardized state evaluation on a high-voltage circuit breaker according to the inference rule. The method comprises the following steps: S1, establishing a starting link, and establishing a circulation link and a flow of each test project in a routine test according to a circuit breaker evaluation standard; S2, encoding an evaluation item, an inspection result and a score deduction principle to form a unique label corresponding to the indexable index; S3, encoding input data, dynamically processing the input data by using an expression in a judgment link, and selecting a subsequent link according to a processing result; S4, after all the circulation links and judgment conditions are completed, calculating to obtain the score of the circuit breaker. According to the methoddisclosed in the invention, a visual, programmable, quantifiable and iterative reasoning mode is formed; the test result of the circuit breaker is directly judged and circulated, and a basis is provided for state maintenance of the circuit breaker.
Description
technical field [0001] The invention belongs to the technical field of state evaluation of electrical equipment, and in particular relates to a method for evaluating a standardized state of a high-voltage circuit breaker according to reasoning rules. Background technique [0002] A circuit breaker is a switching device that can close, carry and break current under normal circuit conditions and can close, carry and break current under abnormal circuit conditions within a specified time. Circuit breakers can be used to distribute electric energy, start asynchronous motors infrequently, protect power lines and motors, and automatically cut off the circuit when they are severely overloaded, short-circuited, or under-voltage. Its function is equivalent to a fuse-type switch. Combination with overheating and underheating relays, etc. Moreover, there is generally no need to change parts after breaking the fault current. [0003] As a switching device that carries normal working c...
Claims
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Login to View More IPC IPC(8): G01R31/327G01R27/02
CPCG01R31/3275G01R27/025
Inventor 张赛鹏宋佳航葛志成朱大铭刘座铭冯世涛黄涛陈捷元赵天成董洪达赵春明刘赫赵智勇
Owner JILIN ELECTRIC POWER RES INST