Research on Frequency Stability in Isolated Power Grid

Author

Zhang, Peigao ; Li, Xingyuan ; Wang, Yuhong ; Deng, Hongqiang

Author_Institution

Sch. of Electr. Eng. & Inf., Sichuan Univ., Chengdu, China

fYear

2012

fDate

27-29 March 2012

Firstpage

1

Lastpage

4

Abstract

Power system islanding is the last defense in protecting power grids from wide-area blackout. The operation of an island power system differs in many ways from that of large interconnected networks. The research frequency is important significance to improve the security and reliability of the isolated power grid. The characteristics of islanding operation are introduced in this paper; the control methods of hydraulic turbine, steam turbine are described. The contributions of primary frequency control, OPC, over frequency generator tripping, UFLS, secondary frequency regulation made to islanding operation are analyzed. The state of islanded power grids and shortcomings of stability control technology at home and abroad are summarized comprehensively the research direction of system frequency control in the future is prospected in this paper.

Keywords

frequency control; frequency stability; hydraulic turbines; power generation reliability; power grids; power system interconnection; power system protection; power system security; steam turbines; OPC; UFLS; blackout; frequency control; frequency generator tripping; frequency regulation; frequency stability; hydraulic turbine; interconnected network; isolated power grid; power grid protection; power system islanding; reliability; security; stability control; steam turbine; Frequency control; Generators; Hydraulic turbines; Oscillators; Power grids; Power system stability; Stability analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Power and Energy Engineering Conference (APPEEC), 2012 Asia-Pacific

Conference_Location

Shanghai

ISSN

2157-4839

Print_ISBN

978-1-4577-0545-8

Type

conf

DOI

10.1109/APPEEC.2012.6307032

Filename

6307032