A quality evaluation method for the unstructured defect record of relay
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.
Strategy for evaluating the status of relay protection
The new generation of intelligent substations has achieved online monitoring functions for secondary equipment, making some state variables of relay protection equipment become
Basic protection relay knowledge
A fast and selective arc fault mitigation for air-insulated LV & MV switchgear and Relion protection and control relays and sensor technology protect staff and plant facilities for many years.
Intelligent diagnosis method of relay protection defects based on
Defect diagnosis takes a long time, which leads to a long time exit of protection during defect. The existing intelligent defect diagnosis methods are carried out on a case-by-case basis, which limits the
A state evaluation and fault diagnosis strategy for substation relay
This study suggests a method for diagnosing defects and evaluating the relay protection system in light of the aforementioned concerns. The method is founded on the K-means clustering
Design of an adaptive identification method for faulty operating states
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 adaptive
Test the Right Stuff: Using Data to Improve Relay Availability, Reduce
By using data and targeted approaches, protective relay users can know and improve relay availability, reduce failures, and optimize protection system testing intervals.
Relay Protection Hidden Fault Monitoring and Risk Analysis
This paper introduces the concept of relay protection of hidden faults, its characteristics, and then analyzes the detection, risk and the calculation method of the relay protection of hidden fault.
Power System Protective Relays: Principles & Practices
Abstract: Protective relays and devices have been developed over 100 years ago to provide “last line” of defense for the electrical systems. They are intended to quickly identify a fault and isolate it so the
Reliability Analysis and Improvement Strategies of Microcomputer
In this paper, the characteristics of the equipment itself and the external environment are comprehensively considered, and various possible failure modes of relay protection equipment are
Strategy for evaluating the status of relay protection
Based on this, this paper proposes a novel relay protection equipment status evaluation strategy. Firstly, considering the fuzziness and uncertainty of the boundary division of relay protection
Fault Tracking Method for Relay Protection Devices
A method of fault tracking for relay protection devices is presented in this paper. Fault tracking means that after the failure of relay protection devices, the anomalies and warning
Relay Protection Device Reliability Assessment Through Radiation
Relay protection devices must operate continuously throughout the year without anomalies. With the integration of advanced technology and process chips in secondary equipment,
Data Dependence Analysis for Defects Data of Relay Protection
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
Analysis of Typical Modes of Relay Protection Defects Based on K
In this paper, based on historical defects, the overall analysis of defects is carried out from the perspective of location, cause and severity of defect. The key quantitative indicators of relay
Operation analysis of fuzzy logic-based relay protection devices
The efficient operation of relay protection systems is essential for maintaining the stability of modern power grids. Previous research has explored fuzzy logic-based models to optimise relay
Research on fault diagnosis method of substation relay protection
In the fault diagnosis of the secondary circuit of substation relay protection, the traditional fault diagnosis methods often rely on a single evidence source or a simple probability model. These
Plant Engineering: Relay Failure Analysis
While plants have made progress in reducing relay failures, relay issues continue to surface, and interest in relay failures remains high . Many relays are not within the control of engineering programs such
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