Gas Turbine Generator Speed Comparison for Over-Rotation Control
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Solution Overview
Problem
Existing power generation systems with gas turbine engines and generators lack effective control mechanisms to prevent over-rotation and over-torque, leading to potential damage and inefficiencies.
Innovation Solution
A control device and method that utilizes rotational speed sensors and angle sensors to compare and control the gas turbine engine and power generator based on the lower of the two speeds, adjusting fuel supply and torque to maintain optimal operation points.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the gas turbine engine operates at high rotational speed to increase power generation capacity, then productivity increases, but the risk of over-rotation and over-torque damage increases
Solution Approach 1:
The control device continuously monitors the rotational speeds of both the gas turbine engine and power generator through sensors, compares these values in real-time, and provides feedback control signals to adjust fuel supply and maintain safe operating parameters, preventing over-rotation while maximizing power generation
Solution Approach 2:
The system dynamically adjusts the fuel supply to the gas turbine engine based on real-time rotational speed comparisons between the engine and generator, allowing the operating parameters to change flexibly in response to varying load conditions while maintaining safety margins
2Power
If the power generator is driven at high speed to increase energy output, then power output increases, but the risk of over-torque damage to the generator increases
Solution Approach 1:
The control device monitors the rotational speed of the power generator and provides feedback control by adjusting fuel supply to the gas turbine engine, ensuring the generator operates within safe torque limits while maintaining high energy output when conditions permit
Solution Approach 2:
The control system performs preliminary comparison of rotational speeds and preemptively adjusts fuel supply before over-torque conditions can develop, preventing damage before it occurs rather than reacting after the problem arises
3Reliability
If rotational speed control is implemented to prevent over-rotation, then reliability improves, but the complexity of the control system increases
Solution Approach 1:
The control device serves multiple functions simultaneously: it monitors rotational speeds of both engine and generator, compares these values, controls fuel supply, and prevents both over-rotation and over-torque conditions, consolidating multiple protective functions into a single integrated system rather than requiring separate control mechanisms
Data Source
AI summary
A control device includes a first rotational speed acquisition unit (acquisition unit) that acquires a first rotational speed, which is the rotational speed of a gas turbine engine, based on a signal supplied from a rotational speed sensor, a second rotational speed acquisition unit (acquisition unit) that acquires a second rotational speed, which is the rotational speed of a power generator, based on a signal supplied from a rotation angle sensor, a comparison unit that compares the first rotational speed with the second rotational speed, and a control unit that controls the gas turbine engine and the power generator based on the lower one of the first rotational speed and the second rotational speed based on a comparison result by the comparison unit.