Predictive Control System for Marine Power Stability
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Solution Overview
Problem
Current marine power distribution systems face significant frequency and voltage variations due to heavy consumer load changes and equipment failures, leading to potential blackouts and increased fuel consumption, with existing solutions being reactive and unable to effectively reduce the number of online Motor Generator Sets (MGS) without compromising stability.
Innovation Solution
A method that utilizes predicted future load changes as feed-forward input to the speed/power control system of MGS or turbojet assist systems, integrating Dynamic Load Prediction (DLP) to adjust power generation and distribution proactively, reducing frequency and voltage variations by anticipating and compensating for load changes before they occur.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the number of online Motor Generator Sets is reduced, then fuel consumption and emissions are decreased, but frequency and voltage stability deteriorate due to insufficient power reserve to handle load variations
Solution Approach 1:
The system performs preliminary action by predicting future load changes on heavy consumers and proactively adjusting the power output of MGS before the actual load change occurs. This feed-forward approach allows the system to maintain frequency and voltage stability even with fewer online MGS, as the power reserve is optimally prepared in advance to handle anticipated load variations.
Solution Approach 2:
The system combines feed-forward prediction with feedback compensation mechanisms. The power management system continuously monitors actual frequency and voltage deviations and adjusts MGS output accordingly, creating a closed-loop control that enhances stability while allowing reduction of online MGS数量.
2Productivity
If reactive power management systems are used to compensate for load variations, then power distribution is optimized, but the system responds too slowly to sudden load changes causing frequency reduction
Solution Approach 1:
The prediction function calculates future load changes in advance and sends feed-forward signals to the power management system. This allows the MGS to begin adjusting power output before the actual load change occurs, eliminating the delay inherent in reactive systems that only respond after deviations are detected.
Solution Approach 2:
The system applies preliminary anti-action by anticipating load increases and pre-increasing MGS power output to counteract the upcoming demand. This prevents frequency drops before they occur, rather than reacting after the frequency has already deviated from nominal values.
Data Source
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AI summary
This invention relates to a system for reducing frequency and/or voltage variations in the power distribution system. The system comprises a power control unit being connected to at least one power generator and at least one consumer, power control system being adapted to monitor the measured load in the system from said at least one power generator and the power consumption from said at least one consumer, and a prediction allocating system for adapted to receive information from, each consumer related to the planned or predicted power consumption and to calculate expected power consumption of the system, and feeding the allocated power consumption to a motor generator system (MGS) controller.