Plant Performance Evaluation Using Dynamic-to-Static Model Comparison
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Solution Overview
Problem
Existing plant performance evaluation systems struggle to accurately assess and compare the current states of process units in plants with their designed or past states, especially in complex plants like chemical plants, making it difficult to identify performance deterioration and necessitate equipment modifications effectively.
Innovation Solution
A plant performance evaluation apparatus and method that utilizes a network-connected system with static and dynamic simulation models, allowing for the comparison of current process unit states with their designed or past states by converting dynamic models into static models, and providing a comparison list to identify differences and inform maintenance or modification decisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If dynamic simulation models are used to accurately represent current plant states, then measurement precision and reliability improve, but device complexity increases
Solution Approach 1:
The patent creates simplified static copies of dynamic simulation models by converting dynamic models into static models that capture essential performance characteristics. This allows accurate performance assessment without the computational complexity of full dynamic simulations, enabling comparison between current and design states through static model analysis.
Solution Approach 2:
The patent extracts key performance parameters from complex dynamic simulation models to create simplified static models. By separating essential performance characteristics from unnecessary dynamic complexity, the system achieves accurate performance monitoring while reducing computational burden and system complexity.
2Reliability
If comprehensive plant performance monitoring is implemented to identify deterioration, then reliability improves, but loss of time and device complexity increase
Solution Approach 1:
The patent pre-processes dynamic simulation models into static models during periods when detailed analysis is not urgently needed. This preliminary conversion allows rapid performance comparisons to be made later without time-consuming dynamic simulations, reducing evaluation time while maintaining monitoring capability.
Solution Approach 2:
The patent implements a hybrid approach where the system can switch between static model comparisons for rapid evaluation and dynamic model analysis when detailed investigation is required. This dynamic methodology optimization balances monitoring reliability with evaluation time requirements.
Data Source
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AI summary
A plant performance evaluation apparatus includes a first storage storing a first static model indicating a model of a first steady state in a plant, a second storage storing a first dynamic model indicating a model of a dynamic state of the plant, a model converter configured to convert the first dynamic model to a second static model indicating a model of a second steady state of the plant, and to store the second static model into the first storage, the first steady state indicating a steady state of the plant temporally before the second steady state, a comparator configured to compare parameters included in the first static model with parameters included in the second static model and to output a comparison result, and a display configured to display the comparison result output from the comparator.