Substation Element Reliability Models for Maintenance Scheduling
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Solution Overview
Problem
Accurately identifying the state of substation elements for optimal asset management, including determining element replacement cycles and maintenance plans, is challenging due to the complexity of substation equipment and the difficulty in assessing their integrity.
Innovation Solution
An asset management method that compares reliability from a reference reliability model with real-time monitoring data to generate a unique reliability model for each substation element, assessing system reliability indices and economic feasibility for maintenance scenarios, and updating the model based on maintenance outcomes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a reference reliability model is used for all substation elements, then the asset management process is simplified, but the accuracy and specificity of reliability assessment deteriorates
Solution Approach 1:
The patent segments the generic reference reliability model into element-specific reliability models by dividing substation elements into different types (transformers, circuit breakers, etc.). Each element type receives a tailored reliability model based on its specific characteristics, monitoring data, and failure patterns, thereby improving assessment accuracy without overwhelming complexity through systematic classification
Solution Approach 2:
The patent changes the parameters of the reference reliability model by adjusting reliability factors based on actual monitoring data, operating conditions, and element-specific characteristics. This allows the model to adapt from a generic reference state to element-specific states, improving precision while maintaining the underlying model structure
2Reliability
If element-specific monitoring and assessment is implemented for each substation element, then the accuracy of maintenance planning improves, but the system complexity and data processing requirements increase
Solution Approach 1:
The patent creates a universal asset management system that handles multiple substation element types through a common framework. The system performs multiple functions including data collection, integrity generation, reliability modeling, and maintenance planning within a single integrated platform, reducing overall system complexity despite the detailed element-specific analysis
Solution Approach 2:
The patent manages complexity by dynamically adjusting model parameters based on data availability and element characteristics. The system adapts the complexity of analysis for each element type, applying appropriate levels of detail and computational intensity, thereby balancing accuracy requirements with system manageability
3Measurement precision
If real-time monitoring data is continuously integrated into reliability models, then the up-to-date accuracy of asset management decisions improves, but the computational load and data processing requirements worsen
Solution Approach 1:
The patent implements periodic updates of reliability models at scheduled intervals rather than continuous real-time processing. The system collects monitoring data continuously but processes and updates reliability assessments periodically, balancing the need for current information with computational efficiency and energy consumption
Solution Approach 2:
The patent applies partial processing by focusing computational resources on elements with higher risk or changing conditions. Not all elements require the same level of continuous monitoring and model updating - the system applies appropriate levels of processing intensity based on element criticality and data significance
Data Source
AI summary
An asset management method for a substation includes deriving an optimal management plan by each element of the substation depending on integrity of the each element of the substation and deriving an optimal unique reliability model for each element of the substation through a process of compensating a reference reliability model of each substation type and an apparatus executing the method.