Power Subsystem Controller Modeling for POI Data Fidelity
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Solution Overview
Problem
Modern wind farms face challenges in efficiently regulating power generating subsystems due to low-fidelity electrical parameter data from points of interconnection, which can lead to suboptimal operation and increased security risks from communicative links between subsystems.
Innovation Solution
A method and system where a subsystem controller generates modeled values for electrical parameters using high-fidelity data from local sensors to compensate for low-fidelity data from points of interconnection, allowing for setpoint commands without requiring direct communication between subsystems, thereby enhancing cybersecurity and operational efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If direct measurement of electrical parameters at the POI is implemented, then measurement precision is improved, but device complexity and security risks increase due to required sensor installation and communication links
Solution Approach 1:
The patent introduces an intermediary modeling approach where a virtual model of the POI electrical parameters is created based on local high-fidelity measurements. This intermediary model allows subsystems to access accurate electrical parameter information without requiring direct physical sensors at the POI or complex communication infrastructure, thus resolving the contradiction between measurement precision and device complexity
Solution Approach 2:
The patent creates a copy or replica of the POI electrical parameter data through local modeling. Each subsystem generates a local model that replicates the POI electrical parameters using its own high-fidelity measurements, eliminating the need for direct POI sensing while maintaining measurement precision
2Adaptability or versatility
If communicative links are established between power generating subsystems, then coordination capability is improved, but security risks and system complexity increase
Solution Approach 1:
The patent enables each subsystem to independently generate its own model of POI electrical parameters using local high-fidelity measurements. This self-service approach eliminates the need for inter-subsystem communication while maintaining coordination capability, as each subsystem autonomously determines its setpoint commands based on its local model
Solution Approach 2:
The patent segments the centralized control function into distributed local models at each subsystem. Each subsystem independently creates and uses its own model of POI parameters, eliminating the need for a centralized communication network while maintaining system coordination
3Device complexity
If low-fidelity data from POI operator is used, then device complexity is reduced, but measurement precision deteriorates
Solution Approach 1:
The patent changes the parameter quality from low-fidelity POI operator data to high-fidelity local measurements. Each subsystem uses its own high-precision sensors to measure electrical parameters locally, transforming the data quality from low-fidelity centralized reporting to high-fidelity distributed measurement
Data Source
AI summary
A system and method are provided for controlling a power generating system having at least one power generating subsystem connected to a point of interconnection (POI). Accordingly, the subsystem controller of the power generating subsystem obtains a first data signal indicative of an electrical parameter at the POI and a second data signal indicative of the electrical parameter at the generating subsystem. The second data signal has a higher fidelity than the first data signal. The second data signal is utilized by the subsystem controller to generate a first modeled value for the electrical parameter at the POI which compensates for the lower-fidelity first data signal. The subsystem controller generates a setpoint command for the power generating subsystem based, at least in part, on the first modeled value for the electrical parameter.