Research ArticleOpen AccessGoogle Scholar indexed
A Research on Emergency DC Power Support Based on DCOI
School of Electrical Engineering and Information, Key laboratory of Smart Grid Sichuan University, Chengdu, China
School of Electrical Engineering and Information, Key laboratory of Smart Grid Sichuan University, Chengdu, China
School of Electrical Engineering and Information, Key laboratory of Smart Grid Sichuan University, Chengdu, China
School of Electrical Engineering and Information, Key laboratory of Smart Grid Sichuan University, Chengdu, China
- 1 School of Electrical Engineering and Information, Key laboratory of Smart Grid Sichuan University, Chengdu, China
- 2 School of Electrical Engineering and Information, Key laboratory of Smart Grid Sichuan University, Chengdu, China
- 3 School of Electrical Engineering and Information, Key laboratory of Smart Grid Sichuan University, Chengdu, China
- 4 School of Electrical Engineering and Information, Key laboratory of Smart Grid Sichuan University, Chengdu, China
Energy and Power Engineering·Volume 05 (2013)·Pages 869–872·Published 30 June 2013·DOI10.4236/epe.2013.54B166
Copy link · social · email
Abstract
An integrated scheme of emergency DC power support which is based on dominant center of Inertia DCOI is proposed to improve power system transient stability. The inter-area speed differences equivalent by dominant center of inertia alleviates the main weakness of the traditional signal which is made of the frequencies at both sides and is represent of abnormal information of the nonlinear dynamic behavior of the power system based on a model in which two AC systems are connected by a HVDC Link. Sichuan Power Grid connected with Southwest Power Grid by Deyang-Baoji HVDC project is used to testify the method. The simulation results show that the control strategy can significantly advance the transient stability of AC/DC system through extended equal area criterion (EEAC).
KeywordsDCOISpeed DifferencesEEAC
- X.-Y. Li, “High Voltage Direct Current Transmission System Operation and Control” Beijing: Science Press，1998.
- E. Bristol, “On a New Measure of Interaction for Multivariable Process Control,” IEEE Transaction on Automation Control,Vol. 11, No. 1, 1966, pp. 133-134. doi:10.1109/TAC.1966.1098266
- P. X. Zhang, Y. J. Cao, H. F. Wang, et al., “Application of Relative Gain Array Method to Analyze Interaction of Multi-Functional FACTS Controllers,” Proceedings of the CSEE, 2004, Vol. 24, No. 7, pp. 13-17．
- J. Y. Zhang and Y. Z. Sun, “A Vulnerable Cut Sets Based Sensitivity Analysis Method for Locating Emergency Control,” Power System Technology, Vol. 31, No. 11, 2007, pp. 1-7.
- X. M. Mao, Y. Zhang and L. Guan, “A Novel WAMS Based HVDC Modulation Method,” Automation of Electric Power Systems, Vol. 31, No. 7, 2007, pp. 45-49.
- J. B. He, L. C. Li, H. X. Chen, et al., “Selection of Feedback Signal for Power System Damping Controller Based on Wide Area Measurements,” Automation of Electric Systems, Vol. 31, No. 9, 2007, pp. 6-10.
- W. D. Yang, Y. S. Xue, Y. Jing, et al., “Emergency DC Power Support to AC Power System in the South China Power Grid,” Automation of Electric Power Systems， Vol. 27, No. 7, 2003, pp. 68-72.
- Y. Zhang, L. Wehenkel, P. Rousseaux, et al., “SIME: Ahybrid Approach to Fast Transient Stability Assessment and Contingency Selection,” Electrical Power Energy Syst, 1997, Vol. 19, No. 3, pp. 195-208. doi:10.1016/S0142-0615(96)00047-6
- Y. S. Xue, “A Critical Comparison of Various Methods for Transient Stability Assessment-Part Two Barrier Point and the Observation Point,” Automation of Electric Power Systems， Vol. 25, No. 11, 2001, pp. 1-7.
- M. C. Liao, G. L. Cai and Y. J. Zhang, “Transient Voltage Stability of Received Power Grid in AC/DC Hybrid Power Systems,” Power System Protection and Control, Vol. 37, No. 10, 2009, pp. 1-4.
- H. J. Wu, Y. H. Wang, X. Y. Li, et al., “Study on DC modulation for AC/DC hybrid transmission system based on comprehensive performance index,” Power System Protection and Control, Vol. 38, No. 22, 2010, pp. 68-73.
- M. M. Xu, X. Y. Li, Y. H. Wang, et al., “Impact on the Damping Characteristics of Sichuan Power Grid by Debao DC Modulation,” Power System Protection and Control, Vol. 38, No. 23, 2010, pp. 141-146.
- T. S. Xu, B. J. Li, Y. H. Bao, et al., “Optimal Parameter-Setting of Under Frequency and Under Voltage Load Shedding for Transient Security,” Automation of Electric Power System, Vol. 27, No. 22, 2003, pp.12-15.