Power Asset Control Mode Switching for Fast Grid Response
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Solution Overview
Problem
Existing control systems for power production facilities face limitations in responding quickly to events or disturbances due to measurement delays and communication delays associated with closed-loop control, which can hinder timely adjustments to maintain grid requirements.
Innovation Solution
A control system that can switch between closed-loop and open-loop modes, where the closed-loop mode ensures precision in maintaining grid parameters and the open-loop mode allows for rapid adjustments by using a proportional integral derivative (PID) controller and a feedforward system to generate delta commands for quick responses to events.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If closed-loop control is used to maintain grid parameters with feedback, then steady state error is reduced and precision is improved, but response time to events or disturbances deteriorates due to measurement delays and communication delays
Solution Approach 1:
The control system dynamically switches between closed-loop and open-loop modes based on operational conditions. In normal conditions, closed-loop mode provides precise steady-state control. When rapid response is needed (such as during grid events or disturbances), the system transitions to open-loop mode to eliminate feedback delays, thus adapting the control strategy to temporal requirements
Solution Approach 2:
The system changes the control parameter configuration by switching between two distinct control modes. The controller modifies its operational parameters (feedback enabled/disabled) based on the situation, allowing optimization of either precision or speed depending on the specific operational context and requirements
2Measurement precision
If closed-loop control is used to maintain precise control of power generating assets, then steady state error is reduced, but the system complexity increases due to feedback mechanisms and communication requirements
Solution Approach 1:
The control system employs dynamic mode switching between closed-loop and open-loop configurations. This allows the system to use complex feedback control only when precision is required, while simplifying to open-loop control when rapid response or basic operation is sufficient, thus optimizing the trade-off between control precision and system complexity
Solution Approach 2:
The controller is designed to perform multiple functions by implementing both closed-loop and open-loop control capabilities within a single system. This multi-functionality allows the same controller to operate in precise feedback mode during normal conditions and switch to simplified open-loop mode during events or disturbances, reducing the need for separate control systems
Data Source
AI summary
A control system for a power production facility is provided. The control system includes a plurality of power generating assets configured to supply power to a power grid. The control system further includes a controller coupled in communication with the plurality of power generating assets. The controller is configured to receive at least one feedback value corresponding to a feedback parameter. The at least one feedback value represents a measured value associated with the power grid. The control system is further configured to determine, based on the received at least one feedback value, to operate in one of a closed-loop mode or an open-loop mode of control.