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Related Concept Videos

Fast Decoupled and DC Powerflow01:24

Fast Decoupled and DC Powerflow

176
The fast decoupled power flow method addresses contingencies in power system operations, such as generator outages or transmission line failures. This method provides quick power flow solutions, essential for real-time system adjustments. Fast decoupled power flow algorithms simplify the Jacobian matrix by neglecting certain elements, leading to two sets of decoupled equations:
176
Control of Power Flow01:30

Control of Power Flow

253
There are several methods to control power flow in power systems:
253
Turbine-Governor Control01:17

Turbine-Governor Control

172
Turbine-governor control is crucial for maintaining power system stability by balancing turbine mechanical power output with electrical load demand. This mechanism ensures that generator frequency and rotor speed are within acceptable limits during load variations. Turbine-generator units store kinetic energy due to their rotating masses; this energy is released to meet the load requirement when the load increases. The electrical torque of turbines rises to meet the demand, whereas the...
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Generator Voltage Control01:21

Generator Voltage Control

127
Generator voltage control is crucial for maintaining the stable operation of synchronous generators and wind turbines. In older models, a DC generator driven by the rotor delivers DC power to the rotor's field winding, and the power is transferred through slip rings and brushes. In the latest models, static or brushless exciters are used. Static exciters rectify AC power from the generator terminals and then transfer the DC power directly to the rotor. Brushless exciters, on the other hand,...
127
Generation of Three-Phase Voltage01:21

Generation of Three-Phase Voltage

358
A three-phase AC generator has a rotor with a rotating magnet placed within the stator mounted with the stationary three-phase winding to generate three-phase voltages via mutual induction. These windings are evenly distributed around the inner circumference of the stator and are arranged 120 electrical degrees apart. Three-phase stator windings consist of three separate coils or groups of coils, known as phases, each connected in Y (star) configuration or Delta configuration.
As the rotor...
358
Load-frequency control01:28

Load-frequency control

126
Load-frequency control (LFC) is vital for maintaining power system stability, ensuring that frequency and power flows remain within acceptable limits during load changes. Turbine-governor control eliminates rotor accelerations and decelerations following load changes. However, a steady-state frequency error persists when the change in the turbine-governor reference setting is zero. In an interconnected power system, each area agrees to export or import a scheduled amount of power through...
126

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Author Spotlight: Enhancement of Salient Object Detection for Smart Grid Applications
03:31

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Enhancing domain-specific text generation for power grid maintenance with P2FT.

Yi Yang1, Chenhao Li2, Binghang Zhu3

  • 1State Grid Shandong Electric Power Research Institute, No.2000 Wangyue Road, Jinan, 250002, Shandong, China. waiwai814@126.com.

Scientific Reports
|November 5, 2024
PubMed
Summary

Specializing pre-trained language models (PLMs) improves power grid maintenance strategy generation. A two-stage fine-tuning approach (P2FT) demonstrates effectiveness for specialized text generation in this domain.

Keywords:
Fine-tuningLanguage modelNatural language processingPower grid domainText generation

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Area of Science:

  • Artificial Intelligence
  • Natural Language Processing
  • Power Systems Engineering

Background:

  • Digitizing power grid operations requires extensive data for smart decision-making.
  • Intelligent decision generation in specialized fields like power grids demands domain-specific knowledge and robust language processing.
  • Pre-trained language models (PLMs) offer potential for specialized tasks, even with authorization constraints.

Purpose of the Study:

  • To explore pre-trained model specialization for generating maintenance strategies in the complex power grid domain.
  • To address the challenge of specialized terminology and knowledge within power grid textual data.
  • To evaluate a novel two-stage fine-tuning approach (P2FT) for this specific task.

Main Methods:

  • Utilized a large-scale pre-training model for natural language processing.
  • Implemented a two-stage fine-tuning approach (P2FT) tailored for power grid domain specialization.
  • Evaluated the method's efficacy and practical value against advanced low-parameter and parameter-free fine-tuning techniques.

Main Results:

  • The P2FT approach demonstrated significant feasibility and practical application value for pre-trained model specialization.
  • Experimental outcomes validated the effectiveness of the proposed method in generating power grid maintenance strategies.
  • The study's findings were corroborated through meticulous analysis and validation against other advanced methods.

Conclusions:

  • Pre-trained model specialization using the P2FT method is a viable and valuable approach for the power grid domain.
  • This research provides practical guidance for text generation tasks in specialized Chinese language and power grid contexts.
  • The findings contribute to advancing intelligent decision-making in power grid operations and maintenance.