Plant Performance Calculation for Part Upgrade Assessment
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Solution Overview
Problem
In power plants, there is a need to quantify and easily assess the performance improvement when new parts are introduced, as various parts with different performances and prices exist, making it challenging to determine the impact on plant efficiency.
Innovation Solution
An arithmetic operation device that calculates plant performance before and after part introduction, using a performance calculation unit, storage unit, and performance improvement calculation unit to determine the percentage of improvement based on load and atmospheric temperature combinations, and outputs the results.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If new parts are introduced to improve plant performance, then performance improvement is achieved, but it becomes difficult to quantitatively assess the actual improvement amount
Solution Approach 1:
The system performs preliminary calculations of plant performance under various operating conditions (different loads and atmospheric temperatures) before the actual part introduction decision. By pre-calculating performance metrics for multiple scenarios and storing them in a data table, the system prepares all necessary information in advance, enabling immediate quantitative assessment when a part introduction decision is made, without requiring complex real-time analysis.
2Measurement precision
If detailed performance calculations are performed for each combination of loads and atmospheric temperatures, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The system segments the performance calculation into discrete combinations of load levels and atmospheric temperature conditions. Each combination is calculated and stored as a separate entry in a data table. This segmentation allows the complex overall performance assessment to be broken down into manageable, pre-calculated components, reducing the real-time computational burden while maintaining comprehensive coverage of operating conditions.
Solution Approach 2:
Instead of performing complex real-time calculations, the system creates copies of performance data for different operating conditions and stores them in a data table. When assessing plant performance, the system retrieves and uses these pre-calculated copies rather than recalculating from scratch, significantly reducing computational complexity while maintaining measurement precision.
3Productivity
If multiple parts are introduced simultaneously, then productivity improvement is accelerated, but it becomes difficult to evaluate the combined influence of part combinations
Solution Approach 1:
The system changes the assessment parameter from evaluating individual parts to evaluating combinations of parts by introducing a coefficient that represents the degree of influence of part combinations. This coefficient is integrated into the performance calculation, allowing the system to quantify the combined effect of multiple parts while maintaining the ability to assess overall productivity improvement.
Data Source
AI summary
An arithmetic operation device includes a performance calculation unit that is configured to calculate performance of a plant before introduction of a part and the performance of the plant after the introduction of the part for each of combinations of a plurality of loads in the plant and a plurality of atmospheric temperatures around the plant, a storage unit that is configured to store a data table indicating a percentage of an operating time of the plant for each of the combinations, and a performance improvement calculation unit that is configured to calculate, on the basis of a calculation result in the performance calculation unit and the data table, how much the performance of the plant is improved compared with the performance before the introduction of the part in a case where the part is introduced and the plant is operated at the percentage indicated by the data table.