Combined Cycle Configuration Model for Grid Dispatch
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Solution Overview
Problem
Current electric power grid systems utilizing combined cycle resources face limitations in accurately reflecting operational characteristics and costs, leading to inefficiencies and increased financial and operational risks due to simplified models that do not fully capture the variations in costs and operating configurations.
Innovation Solution
The Enhanced Combined Cycle (ECC) model allows market participants to offer multiple combined cycle configurations with specific operating parameters, optimizing commitments and transitions among these configurations, and includes advanced settlement rules and telemetry systems to better manage risk and reduce inefficiencies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If simplified models are used for combined cycle resources, then ease of operation is improved, but measurement precision of operational characteristics deteriorates
Solution Approach 1:
The combined cycle resource is segmented into multiple configurations (e.g., different numbers of gas turbines and steam turbines operating), allowing the system to capture detailed operational characteristics while maintaining manageable complexity through structured segmentation of operating modes
Solution Approach 2:
The model incorporates configuration-specific parameters such as minimum/maximum output, ramp rates, and operating costs that vary by configuration, enabling precise measurement of operational characteristics while maintaining ease of operation through standardized parameter structures
2Measurement precision
If multiple combined cycle configurations are modeled, then measurement precision of operational characteristics is improved, but device complexity increases
Solution Approach 1:
A universal configuration-based modeling framework is applied that can represent multiple combined cycle operating modes (different turbine combinations) using a single standardized structure, allowing the system to achieve high measurement precision without proportionally increasing device complexity
Solution Approach 2:
The model uses configuration-specific parameter sets that are systematically organized, where each configuration has defined parameters for output limits, ramp rates, and costs. This structured approach allows precise representation of multiple configurations while managing complexity through consistent parameter naming and organization
3Measurement precision
If configuration-based offers are implemented, then measurement precision of cost structure is improved, but ease of operation deteriorates
Solution Approach 1:
The cost structure is segmented by configuration, with each configuration having its own cost parameters. This segmentation improves measurement precision of the cost structure while maintaining ease of operation through automated configuration selection based on system needs and cost optimization algorithms
4Measurement precision
If transition costs and operating characteristics are modeled, then measurement precision of operational characteristics is improved, but device complexity increases
Solution Approach 1:
Transition costs and operating characteristics for each configuration are predetermined and pre-modeled, allowing the system to achieve high measurement precision for transitions between configurations without increasing real-time operational complexity, as the computational work is performed in advance during offer submission
Data Source
AI summary
A method for operating a combined-cycle electrical power grid by: accepting, from combined cycle power generation participants, combined cycle offers for valid combined cycle configurations, each including identification of power generator type(s) for the configuration and the offers including at least three levels of parameter information pertaining for the valid combined cycle configurations, the three levels including, (a) resource level parameters that describe transition information between the valid combined cycle configurations, (b) configuration level parameters that describe operating parameters for each valid configuration; and (c) component level parameters that describe operating parameters for specific power generator components included in a valid configuration; selecting commitments from the combined cycle offers based upon the resource level parameters, the configuration level parameters and the component level parameters; and controlling dispatch of electricity based upon the commitments.