Synchronous Machine Field Regulation for Renewable Grid Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The increasing integration of renewable energy sources into power systems poses challenges for maintaining stable voltage and frequency, as conventional power plants without stabilization functions lead to insufficient voltage regulation and frequency adjustment capacities, resulting in difficulties in recovering from voltage drops and incurring high costs for infrastructure upgrades.
Innovation Solution
A power-system stabilization system comprising a synchronous machine, magnetic field regulator, and compensation circuit, which adjusts control constants based on a power-system stability index reflecting renewable energy amounts, ensuring voltage and frequency stability through field regulation and reactive power compensation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If renewable energy sources are integrated into the power system, then the power system can benefit from clean energy generation, but the voltage regulation and frequency adjustment capacities become insufficient
Solution Approach 1:
The invention changes the control parameters of synchronous machines by dynamically adjusting the excitation voltage and mechanical power input based on system conditions. The control device modifies operational parameters to provide voltage regulation and frequency adjustment capabilities even when renewable energy penetration is high, thereby resolving the contradiction between renewable energy integration and system stability.
2Ease of manufacture
If conventional power plants without stabilization functions are used, then infrastructure costs are reduced, but the ability to recover from voltage drops deteriorates
Solution Approach 1:
The synchronous machine is configured to automatically provide stabilization functions without requiring additional dedicated stabilization infrastructure. By utilizing the inherent capabilities of the synchronous machine and controlling its excitation and mechanical power, the system self-regulates voltage and frequency, eliminating the need for costly additional stabilization equipment while maintaining reliability.
3Device complexity
If control constants are fixed in the magnetic field regulator, then the device complexity is reduced, but the adaptability to renewable energy fluctuations worsens
Solution Approach 1:
The invention transitions from fixed control constants to dynamic control parameters. The control device continuously adjusts the control constants of the magnetic field regulator based on real-time system conditions and renewable energy generation levels. This dynamic adaptation enables the system to respond effectively to fluctuations in renewable energy input while maintaining manageable device complexity through systematic control strategies.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution effectively stabilizes voltage and frequency in power systems by dynamically adjusting control parameters in response to renewable energy fluctuations, enhancing the overall stability and reducing the need for costly infrastructure upgrades.
Implementation Method 1
magnetic field regulator for controlling the synchronous machine
Implementation Method 2
compensation circuit for correcting a control constant of the magnetic field regulator in accordance with a power-system stability maintaining index
Data Source
AI summary
The present invention provides a power-system stabilization system and a power-system stabilization method, which fundamentally solve the problems of insufficiency and fluctuation in the voltage maintenance capacity and the frequency maintenance capacity. A power-system stabilization system of the present invention comprises a synchronous machine to be field-regulated disposed in an electric power station connected to a power system, a magnetic field regulator for controlling the synchronous machine, and a compensation circuit for correcting a control constant of the magnetic field regulator in accordance with a power-system stability maintaining index that is an index reflecting a renewable energy amount in the power system.