Research on over Frequency Generator Tripping Configuration Scheme of Regional Grid in Infirm Interconnections and Small Capacity

Abstract:

The frequency characteristics of islanding operation are introduced firstly. The magnitude of balance between electromagnetic power and the original motive power and the inertia of the system are the critical factors that affect the frequency. Based on the possible over-frequency problems during the isolated operation of the regional network, the configuration principles of over frequency generator tripping are proposed. Taking an actual grid as an example, an adaptable and efficient configuration solution of over frequency generator tripping is made according to the principles. In addition, the coordination between over frequency generator tripping and over-speed protection controller is studied. This paper brings forward meaningful reference configuration principles for over frequency generator tripping that is suitable to small-capacity regional power grid which is in infirm interconnections.

• Periodical: Applied Mechanics and Materials (Volumes 336-338)
• Pages: 1174-1179
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.336-338.1174
• Online since: July 2013
• Authors: Fan Yang*, Yin Heng Su, Shu Qiang Zhao, Yun Ting Song, Yong Mei, Qing Wang, Zhi Qiang Zhang
• Keywords: Configuration Principle, Coordination, Isolated Network Operation, Over Frequency Generator Tripping, Small-Capacity Regional Grid

References

[1] ZHANG Wen-Liang, ZHOU Xiao-Xin, YIN Yong-Hua et al, "Composition and Security Analysis of North China-Central China-East China UHV Synchronous Power Grid", Proceedings of the CSEE, Vol.30, No. 16, 2010, pp.1-5

[2] LI Zheng, LI Xing-yuan, CHENG Li-ming et al, "Overview of Isolated Power System Frequency Stability Control", East China Electric Power, Vol.40, No.7, 2012, p.1173~1177

[3] JIA Chang-zhu, "Analyzing our electric networks safety from the US/Canada power down event", Modern Electric Power, Vol.21, No.3, 2004, pp.70-73

[4] Fan Fu-er, "Frequency and Power Flow of Interconnected Large Power System", Power System Technology, Vol.24, No.6, 2000, pp.27-30

[5] LU Jia-zheng, JIANG Zheng-long, LEI Hong-cai et al, "Analysis of Hunan power grid ice disaster accident in 2008", Automation of Electric Power Systems, Vol.32, No.11, 2008, pp.16-19

[6] Jonathan Horne, Damian Flynn, Tim Littler, "Frequency stability issues for islanded power systems", //IEEE PES, Jun.6-10, 2004, Denver, USA. Vol.1, pp.299-306

DOI: 10.1109/psce.2004.1397455

[7] Cai Sun, Feng Yongxin, Deng Shaoxiang et al, "Analytical study on strategy for frequency stability control in isolated power system", Guangdong Electric Power, Vol.25, No.2, 2012, pp.16-19

[8] YE Jian-zhong, ZOU Jun-xiong, LONG Fei et al, "Research on frequency control strategy for isolated grid operation of thermal power unit in regional power network", Power System Protection and Control, Vol.40, No.7, 2012, p.123~128

[9] ZHANG Pei-gao, LI Xing-yuan, LI Zheng, "Research on frequency stability and control strategy in isolated power grid, Power System Protection and Control", Vol.40, No.15, 2012, pp.143-155

[10] ZHOU Chuan-mei, SUN Bin, "Study on security and stability measures of the isolated grid operation of the Guizhou power grid and area power grid", Power System Protection and Control, Vol.36, No.19, 2008, pp.29-32