Hydroelectric Top Cover Drainage Health Evaluation With Hierarchical Weighting
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Solution Overview
Problem
Current health evaluation methods for the top cover drainage system of hydroelectric generating sets are limited and lack reliability and universality, hindering effective health state monitoring and maintenance strategies.
Innovation Solution
A comprehensive weighting health evaluation method and system that involves acquiring initial weights of components and state variables, establishing standard requirements and scoring criteria, and calculating scores sequentially from state variables to the top cover drainage system using a combined weighting method incorporating AHP and anti-entropy methods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional health evaluation methods are used for the top cover drainage system, then the evaluation process is simple, but the reliability and universality of evaluation results are limited
Solution Approach 1:
The patent segments the top cover drainage system into multiple hierarchical levels (system level, component level, state variable level) with distinct evaluation indicators for each level. This segmentation allows comprehensive coverage of system health while maintaining structured complexity management through the hierarchical framework.
Solution Approach 2:
The patent develops a universal health evaluation method that can be applied to different hydroelectric generating sets and various components within the drainage system. The standardized indicator system and weighting methodology enable the same evaluation framework to assess diverse components (pumps, valves, pipes) consistently, enhancing universality across applications.
2Measurement precision
If a comprehensive weighting method with multiple indicators is used, then the health evaluation accuracy is improved, but the calculation complexity increases
Solution Approach 1:
The patent transforms the complex multi-indicator evaluation into a standardized parameter system with normalized scores (0-100 scale) and weighted aggregations. By changing the parameters to standardized formats and using systematic weighting calculations, the method achieves high measurement precision while making the complexity manageable through consistent mathematical transformations.
Solution Approach 2:
The patent implements a feedback mechanism where evaluation results at the state variable level feed into component level assessment, which in turn feeds into system level evaluation. This hierarchical feedback structure allows precise local measurements to be aggregated systematically, improving overall assessment precision while organizing computational complexity into manageable feedback loops.
3Reliability
If hierarchical evaluation with multiple levels is implemented, then the comprehensiveness of health assessment is improved, but the evaluation time increases
Solution Approach 1:
The hierarchical segmentation of evaluation into three distinct levels (system, component, state variable) with clear boundaries and standardized procedures enables parallel processing potential. Each level can be evaluated independently with its own indicator set, allowing comprehensive assessment while reducing overall evaluation time through modular, separable calculation units.
Solution Approach 2:
The patent establishes preliminary standardized scoring criteria and weighting coefficients for each evaluation level before actual health assessment. By pre-defining the evaluation framework, indicator weights, and scoring standards, the method enables rapid execution of comprehensive evaluations without requiring complex real-time calculations, thus reducing evaluation time while maintaining comprehensiveness.
Data Source
AI summary
The present invention reveals a comprehensive health evaluation method and system for the top cover drainage system of a hydroelectric generating set. It analyzes health evaluation factors at multiple levels, processing the drainage system into a component evaluation set and a state variable evaluation set. A combined weighting method, incorporating both initial weight and objective weighting methods, is used for comprehensive weighting across the levels. Standard requirements and scoring criteria are established, enabling sequential calculation of scores from state variables to components, then to the top cover drainage system, progressing from low to high levels. This process evaluates the health degrees at each level, resulting in a comprehensive and reliable health evaluation outcome. Consequently, it effectively addresses technical issues in prior art, such as limitations in health evaluation methods and the low reliability and universality of evaluation results.