A New Method for Capturing Oscillation Center Based on Reactive Power Integral

Abstract:

The construction and development of power system have made our country form interconnected power grid. When oscillates occurs without timely disconnected control, accident may spread which will cause stability damage and uncontrollable chain reaction. So, how to guarantee the system to make effective out-of-step separation in the critical moment is the significant task in current power system. This paper analyzes the characteristics of electrical quantity after out-of-step, proposes a criterion based on reactive power integral, and does simulation in CEPRI-36-node system. The experimental results show that this control can start from the comprehensive situation, adopt multiport electrical parameter, locate and capture oscillation center accurately, monitor system state timely, adapt to system network structure and operation mode change automatically, recognize condition of out-of-step rapidly.

• Periodical: Applied Mechanics and Materials (Volumes 336-338)
• Pages: 1080-1085
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.336-338.1080
• Online since: July 2013
• Authors: Yi Fei Wang*, Di Chen Liu, Qing Fen Liao, Nong Xiang
• Keywords: Bus Voltage, Center of Out-of-Step, Reactive Power Integral, Wide-Area Power Grid

References

[1] FANG yong-jie, the adaptive solution column Control of power system, Automation of Electric Power Systems, 2007, 31(20):41-48. (in Chinese)

[2] Xi'an Jiaotong University, Tsinghua University, Zhejiang University et al. Co mutation of Electric Power Systems. Beijing: Hydraulic & Electric Power Press，1978.288. (in Chinese)

[3] YAO li-xiao, NING bu, SHEN dong-fang, YANG hao, WANG lei. Asynchronous operation state oscillation center research. Power system and clean energy, 2008, 24(6):16-20. (in Chinese)

[4] GAO Peng,YANG mei-qiang,REN zu-yi. "A new method to Locate oscillation center". Jiangsu Electrical Engineering, 2006, 25（3）:7-10.(in Chinese)

[5] GAO Peng, WANG jian-quan, ZHOU wen-ping et al "A Theoretical study on capturing the separation interface of out-of-step based on reactive power". Automation of Electric Power Systems, 2005, 29（5）:15-20. (in Chinese)

[6] He yang-zan, Wen zeng-yin. analysis of electric power System [M], the third edition press of Huazhong University of science and technology, 2006:190. (in Chinese)

[7] Study on the method of out-of-step and splitting between large regional grid based on PMU. Peking: north china electrical power university Peking,2006. (in Chinese)