Automated Substation Automation Reliability Calculation
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Solution Overview
Problem
The reliability calculation of Substation Automation (SA) systems is subjective and requires significant engineering effort due to the complexity of communication architectures, making it difficult to objectively compare different architectures and ensure system reliability.
Innovation Solution
A method and device that calculate SA system reliability by identifying substation devices and communication elements from standardized configuration representations, providing reliability indications for each element, and analyzing physical data flow paths to determine overall system reliability, applicable to various process control systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual reliability analysis methods are used for SA systems, then comprehensive assessment can be achieved, but the process becomes subjective and complex
Solution Approach 1:
The patent replaces manual, subjective reliability analysis with an automated computer-based system that uses standardized configuration representations (SCD files) and algorithmic processing. The computing device automatically extracts data flow paths, identifies communication elements, and calculates reliability metrics, eliminating human subjectivity and reducing analysis complexity while maintaining comprehensive assessment capabilities.
Solution Approach 2:
The system enables self-service reliability assessment by automatically processing standardized configuration representations without requiring manual intervention. The computing device autonomously parses SCD files, extracts necessary data, performs reliability calculations, and generates results, making the process objective and repeatable while reducing engineering effort.
2Measurement precision
If detailed manual analysis of physical data flow paths is performed, then accurate reliability calculation is achieved, but engineering effort increases significantly
Solution Approach 1:
The patent utilizes pre-existing standardized configuration representations (SCD files) that already contain detailed information about data flow paths, communication elements, and system architecture. By leveraging this preliminary structured data, the system avoids the need for manual data collection and analysis, achieving accurate reliability calculations while significantly reducing engineering effort and time investment.
Solution Approach 2:
The system replaces manual tracing and analysis of physical data flow paths with automated computer-based processing. The computing device algorithmically extracts data flow information from standardized configurations, automatically identifies communication elements, and performs reliability calculations, maintaining measurement precision while eliminating time-consuming manual engineering efforts.
3Extent of automation
If standardized configuration representations are used, then automated processing becomes possible, but the system requires specific formal descriptions
Solution Approach 1:
The patent leverages the universal IEC 61850 standardized configuration representation format that is already widely used in substation automation systems. This standardized format serves multiple functions: it provides a common language for system configuration, enables automated processing, and facilitates reliability analysis. By building upon this existing universal standard, the system achieves high automation without imposing additional complexity requirements on the configuration process.
Data Source
AI summary
A method and device automatically extract, to a maximum extent, reliability-relevant information from a Substation Configuration Description (SCD) file describing an electric power transmission or distribution substation. The information in the SCD file is used to identify the physical topology of a communication network of a Substation Automation (SA) system, and all dataflow relating to a given SA functionality or Logical Node (LN). An LN reliability measure for the latter is calculated, involving reliability indications specific to each element or device participating in the dataflow. A number of LN reliability measures are consolidated to produce an overall reliability for the SA system architecture or communication network topology. The method and tool minimize the engineering effort required to perform a reliability calculation, and thus allow comparing the reliability of different SA architectures with minimal effort and intervention of a reliability engineer.