Adaptive Power System Stabilizer for Generator Rotor Oscillation Damping
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Solution Overview
Problem
Conventional excitation controllers and power system stabilizers (CPSS) are ineffective in dampening rotor oscillations in power generating systems, leading to instability and voltage instability issues, especially under transient conditions caused by renewable energy sources.
Innovation Solution
An adaptive power system stabilizer (PSS) system that dynamically detects and responds to operational parameters exceeding threshold values, selectively altering or blocking control operations to maintain voltage stability and prevent oscillations, using a processor and memory to derive optimized PSS settings based on real-time data and machine learning techniques.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional excitation controllers and power system stabilizer (CPSS) are used to regulate generator output, then voltage and reactive power control is achieved, but rotor oscillations cannot be effectively dampened under transient conditions
Solution Approach 1:
The patent implements an adaptive power system stabilizer that dynamically adjusts control parameters based on real-time operating conditions. The controller transitions from fixed conventional parameters to variable adaptive parameters that respond to changing system states, enabling effective rotor oscillation damping across different transient conditions while maintaining voltage stability.
Solution Approach 2:
The invention changes the control parameters of the power system stabilizer from constant values to dynamically adjustable values. By monitoring system oscillations and adapting the stabilizer parameters (such as gain and phase compensation) in real-time, the system achieves effective damping across varying frequency ranges and operating conditions that conventional fixed parameters cannot handle.
2Ease of operation
If conventional power system stabilizer parameters are used, then system operation is maintained, but oscillation dampening effectiveness is insufficient under varying transient conditions
Solution Approach 1:
The adaptive power system stabilizer incorporates feedback mechanisms that continuously monitor rotor oscillations and system response. This feedback loop enables the controller to detect oscillation patterns, assess dampening effectiveness, and automatically adjust stabilizer parameters to maintain optimal performance under varying transient conditions, thereby improving reliability without compromising operational continuity.
3Stability of the object's composition
If adaptive PSS system is selectively utilized based on threshold values, then rotor oscillation damping is improved, but system complexity increases
Solution Approach 1:
The adaptive power system stabilizer employs self-adjusting mechanisms that automatically detect oscillation conditions and modify control parameters without external intervention. The system monitors its own performance, compares actual behavior against desired outcomes, and autonomously tunes parameters to maintain optimal damping, thereby managing complexity through self-regulation rather than requiring complex external control architecture.
Data Source
AI summary
A system includes an excitation system. The excitation system includes a memory that may store an adaptive power system stabilizer (PSS) system that may dynamically stabilize an operation of a generator system. The excitation system also includes a processor communicatively coupled to the memory that may selectively utilize the adaptive PSS system based upon a determination of whether one or more operational parameters of the generator system has met or exceeded a threshold value.