Earticle

초록

영어

Islanding detection is one of the essential features for photovoltaic grid-connected systems; detection performance is directly related to safe operation of the equipment. Summarize existing islanding detection, then an active method based on frequency – reactive power feedback islanding detection is proposed. Once an islanding condition occurs, the method introducing a load frequency - reactive power characteristics associated component as input of reactive power perturbation, breaks the existing islands of stability point in the case of the power balance. Then it detects the system frequency deviation by real time, and draws into the function of reactive perturbation to form a positive feedback loop. So the frequency drifting is accelerated and the frequency of the output voltage of the photovoltaic grid-connected inverter exceeds a preset threshold value, and then the islanding will be detected. Simulation shows that the proposed method has no detection dead zone and it is fast and has little influence on power quality.

목차

Abstract
 1. Introduction
 2. Islanding Detection General Principle
 3. Frequency feedback in dq axes
 4. Frequency – reactive power feedback islanding detection simulation
 5. Simulation Results Analysis
 6. Conclusion
 Acknowledgements
 References

키워드

저자

• Shibo Wang [ Electrical & Electronic Engineering, Harbin University of Science and Technology ]
• Qi Wei [ Electrical & Electronic Engineering, Harbin University of Science and Technology ]
• Siwen Cai [ Electrical & Electronic Engineering, Harbin University of Science and Technology ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  International Journal of Grid and Distributed Computing

• 간기

  격월간

• pISSN

  2005-4262

• 수록기간

  2008~2016

• 십진분류

  KDC 505 DDC 605