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The original record data for the defect of the relay protection devices (RPDs) collected on site is and may contain problems influencing the data
The original record data for the defect of the relay protection devices (RPDs) collected on site is and may contain problems influencing the data mining, and it is lack of quantitative evaluation.
Relay protection devices defect rating model based on different text classification methods.
Guide to classifying relay protection and safety automatic device defects in substations per Q/GDW 11024-2013 standard. Covers critical, serious,
Introduction Relay protection devices are the first line of defense of the power system . They should be routinely maintained, and the in-timing repaired . Thus, a large amount of text data about defect
By understanding the characteristics of the power grid industry, analyzing the types of faults of relay protection devices in different states, and
Based on 7-years defect data of RPDs in SGCC, this paper discovers the association rules (ARs) of defect data based on the Apriori algorithm. In detail, the ARs among different
Considering the state assessment of relay protection device gray and fuzzy, an analytical method based on the combination of grey correlation analysis and apriori correlation analysis is
The paper, on the basis of knowledge graph technology, determines the fault classification according to the standard fault knowledge base of relay
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Relay protection device is an integral part of power system. When a fault or disturbance occurs in a part of the power system due to natural, man-made or equipment failure, relay protection devices should
In this context, this paper proposes a method for evaluating the quality of the text of defect records to fill the gap in this area of research for secondary equipment.
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Protective relays are critical in power systems because they serve as decision-making devices that ensure the safe operation of power grid. They play a key role in power system protection.
Based on the text record of defects of RPDs in a regional power grid and the defect text dictionary, this paper analyses the defect grading method with Term Frequency-Inverse Document
Abstract To address the high complexity and diversity of faults in relay protection devices, as well as the challenges in fault feature extraction that affect fault identification accuracy, an
In this section, three common problems that occur in records text for the defect of PRDs are listed. This paper focuses on the defect processing logs of relay protection devices in a regional
Accurate grading of relay protection device (RPD) defects can improve the maintenance and reliability of RPD to ensure the safety of power grid. Based on
A professional dictionary construction method suitable for defects in relay protection devices is proposed, and relevant professional dictionaries are constructed taking a regional power grid as an
Although traditional methods have achieved some results, their ability to handle diverse faults in large and highly complex power systems is not strong enough. In recent years, artificial intelligence has
ABSTRACT Currently, a large amount of defect data in relay protection devices (RPDs) is accumulated in operation. However, the defect data dependence analysis is absence and thus it could not meet
Download Citation | On Sep 1, 2023, Shaoming Zheng and others published A quality evaluation method for the unstructured defect record of relay protection devices based on ontology and knowledge
Abstract Ensuring the operational reliability of substation relay protection systems through rapid defect diagnosis and state assessment is
Abstract: Accurate and robust defect diagnosis methods of relay protection systems could enhance power systems safety and prevent casualties. It is challenging for traditional defect
Constructs a reliability analysis model for protection devices and their protection systems using the functional information transmission chain of protection devices, measurement and control devices,
The analysis results show that the Apriori method can effectively reveal the hidden information in the defect data, such as the ARs between the vulnerable parts of RPDs, defect causes and other factors.
In details, first, the problems existing in the unstructured defect records of RPDs are presented. Secondly, the corresponding evaluation indicators are proposed, and the quantitative calculation
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