Fast and accurate transient stability analysis is crucial to power system operation. With high penetration level of wind power resources, practical dynamic security region (PDSR) with hyper plane expression has outstanding advantages in situational awareness and series of optimization problems. The precondition of obtaining accurate PDSR boundary is to locate sufficient points around the boundary (critical points). Therefore, this paper proposes a space division and Wasserstein generative adversarial network with gradient penalty (WGAN-GP) based fast generation method of PDSR boundary. First, the typical differential topological characterizations of dynamic security region (DSR) provide strong theoretical foundation that the interior of DSR is hole-free and the boundaries of DSR are tight and knot-free. Then, the space division method is proposed to calculate critical operation area where the PDSR boundary is located, tremendously compressing the search space to locate critical points and improving the confidence level of boundary fitting result. Furthermore, the WGAN-GP model is utilized to fast obtain large number of critical points based on learning the data distribution of the small training set aforementioned. Finally, the PDSR boundary with hyperplanes is fitted by the least square method. The case study is tested on the Institute of Electrical and Electronics Engineers (IEEE) 39-bus system and the results verify the accuracy and efficiency of the proposed method.
HolttinenH, KiviluomaJ, FlynnD, SmithJC, OrthsA, EriksenPB, et al. System impact studies for near 100% renewable energy systems dominated by inverter based variable generation. IEEE Trans Power Syst2022;37(4):3249‒58. . 10.1109/tpwrs.2020.3034924
[2]
LiangX. Emerging power quality challenges due to integration of renewable energy sources. IEEE Trans Ind Appl2017;53(2):855‒66. . 10.1109/tia.2016.2626253
[3]
PapadopoulosPN, MilanovicJV. Probabilistic framework for transient stability assessment of power systems with high penetration of renewable generation. IEEE Trans Power Syst2017;32(4):3078‒88. . 10.1109/tpwrs.2016.2630799
[4]
XiaS, DingZ, ShahidehpourM, ChanKW, BuS, LiG. Transient stability constrained optimal power flow calculation with extremely unstable conditions using energy sensitivity method. IEEE Trans Power Syst2021;36(1):355‒65. . 10.1109/TPWRS.2020.3003522
[5]
LiangZ, GeR, DongY, ChenG. Analysis of large-scale blackout occurred on July 30 and July 31, 2012 in India and its lessons to China’s power grid dispatch and operation. Power Syst Technol2013;37(7):1841‒8. Chinese.
[6]
HatziargyriouN, MilanovicJV, RahmannC, AjjarapuV, CanizaresC, ErlichI, et al. Definition and classification of power system stability—revisited & extended. IEEE Trans Power Syst2021;36(4):3271‒81. . 10.1109/tpwrs.2020.3041774
[7]
YangT, YuY. Static voltage security region-based coordinated voltage control in smart distribution grids. IEEE Trans Smart Grid2018;9(6):5494‒502. . 10.1109/tsg.2017.2680436
[8]
YuY. Methodology of security region and practical results. J Tianjin Univ2003;36(5):525‒8. Chinese.
[9]
WangX, ZhangM, DengM, QiaoY, HuX. Optimal emergency control strategy algorithm of ideal time based on dynamic security region. Power System Protect Control2014;42(12):71‒7.
[10]
FengF, YuY. Dynamic security regions of power systems in injection spaces. Proc CSEE1993;13(3):16‒24. Chinese.
[11]
YuY, LiuH, ZengY. Optimal transient stability emergency control based on practical dynamic security region. Sciencepaper Online2004;34(5):556‒63. Chinese.
[12]
LiuH, YuY. A comprehensive security control method based on practical dynamic security regions of power systems. Proc CSEE2005;25(20):31‒6. Chinese.
[13]
YuY, LinJ. Practical analytic expression of power system dynamic security region’s boundary. J Tianjin Univ1997;30(1):2‒9. Chinese.
[14]
YuY, LuanW. Determination of dynamic security region of practical power system by fitting technology. Proc CSEE1990;10(S1):24‒30. Chinese.
[15]
LiangM, YuY, StephenTL, PeiZ. Identification method of instability modes and its application in dynamic security region. Autom Electr Power Syst2004;28(11):28‒32. Chinese.
[16]
ZengY, FanJ, YuY, LuF, HuangY. Practical dynamic security regions of bulk power systems. Autom Electr Power Syst2001;25(16):6‒10. Chinese.
[17]
LiuY, ShiX, XuY. A hybrid data-driven method for fast approximation of practical dynamic security region boundary of power systems. Int J Electr Power Energy Syst2020;117:105658. . 10.1016/j.ijepes.2019.105658
[18]
LiB, WuJ, QiangZ, QinL, HaoL. Enhanced adaptive assessment on transient stability of power system based on improved deep convolutional generative adversarial network. Autom Electr Power Syst2022;46(2):73‒82. Chinese.
[19]
TanB, YangJ, LaiQ, XieP, LiJ, XuJ. Data augment method for power system transient stability assessment based on improved conditional generative adversarial network. Autom Electr Power Syst2019;43(1):149‒57. Chinese. . 10.7500/AEPS20180522004
[20]
ZhouX, GuanX, SunD, JiangH, PengJ, JinY, et al. Transient stability assessment based on gated graph neural network with imbalanced data in internet of energy. IEEE Internet Things J2022;9(12):9320‒31. . 10.1109/jiot.2021.3127895
[21]
YangD, JiM, ZhouB, BuS, HuB. Transient stability assessment of power system based on DGL-GAN. Power Syst Technol2021;45(8):2934‒45. Chinese.
[22]
ShiF, WuJ, WuH, LiB, JiJ, WangC, et al. Integrated evaluation of power system transient power angle and transient voltage stability margin based on deep learning. Power Grid Technol2023;47(2):731‒40. Chinese.
[23]
TianY, WangK, OluicM, GhandhariM, XuJ, LiG. Construction of multi-state transient stability boundary based on broad learning. IEEE Trans Power Syst2021;36(4):2906‒17. . 10.1109/tpwrs.2020.3047611
[24]
ZhanX, HanS, RongN, CaoY. A hybrid transfer learning method for transient stability prediction considering sample imbalance. Appl Energy2023;333:120573. . 10.1016/j.apenergy.2022.120573
[25]
NarasimhamurthiN, MusaviMR. A generalized energy function for transient stability analysis of power system. IEEE Trans Circ Syst1984;31(7):637‒45. . 10.1109/tcs.1984.1085560
[26]
ChiangHD, HirsehMW, WuFF. Stability regions of nonlinear autonomous dynamical systems. IEEE Trans Automat Contr1988;33(1):16‒27. . 10.1109/9.357
[27]
YuY, LiuY, QinC, YangT. Theory and method of power system integrated security region irrelevant to operation states: an introduction. Engineering2020;6(7):754‒77. . 10.1016/j.eng.2019.11.016
[28]
FengF, YuY. Differential topological characterizations of the dynamic security region of power systems. Proc CSU EPSA1991;1(4):48‒59. Chinese.
[29]
ShiX. A hybrid data-driven method for fast approximation of practical dynamic security region boundary [dissertation]. Tianjin: Tianjin University; 2020. of power system. . 10.1016/j.ijepes.2019.105658
[30]
YuY, LuanW. A study on dynamic security regions of power systems. Proc CSU EPSA1990;2(1):11‒21. Chinese.