Earticle

초록

영어

Under frequency load shedding is widely used under emergency situations in the power system. It significantly ensures frequency stability of power system by dropping excessive loads at certain places. In order to improve the traditional UFLS schemes, the rate of frequency change is taken into consideration when calculating the quantity of active power imbalance in the power system. The measure factors of frequency change rate are analyzed and a new function is created to calculate the active power imbalance based on frequency and voltage. Moreover, a new method which utilizes frequency and voltage sensitivity to determine the location and corresponding quantity of load shedding is proposed. Voltage stability should be maintained at the time of recovering system frequency stability. The simulation results based on IEEE39 buses system show that the new self-adaptive scheme of load shedding is more reasonable and superior.

목차

Abstract
 1. Introduction
 2. System Frequency Response Analysis
  2.1. The analysis of rotor movement swing
  2.2. The measurement analysis of the rate of frequency change
 3. New Load Shedding Strategy Analysis
  3.1. Determining the disturbance amplitude
  3.2. Determining the location of load shedding
 4. The Simulation Example Analysis
  4.1 The simulation analysis of tripping generator
  4.2 The analysis of tripping an important tie-line
 5. Conclusions
 Acknowledgements
 References

키워드

저자

• Zhichao Zhang [ State Key Laboratory for Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, China; College of Mechanical and Electronic Engineering, Shihezi University, Shihezi 832003, China ]
• Zengping Wang [ State Key Laboratory for Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, China; ]
• Panyu Fang [ State Key Laboratory for Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, China; ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  International Journal of Control and Automation

• 간기

  월간

• pISSN

  2005-4297

• 수록기간

  2008~2016

• 십진분류

  KDC 505 DDC 605