含恒功率负载的直流微网大信号稳定性分析

doi:10.19595/j.cnki.1000-6753.tces.L80648

Abstract
Figure/Table
References
Related Citation (15)

Download: PDF (1512 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract In the DC microgrid, varieties of power electronic converters are connected to the DC bus with different control methods to stabilize bus voltage. Among these converters, there are power converters that they accurately control the output voltage through closed voltage loops. They behave as constant power loads (CPL) and have a destabilizing effect from negative incremental resistance (NIR) and their nonlinearities. The large-signal stability of the DC microgrid with multiple constant power loads are studied in this paper, mixed potential function theory and Lyapunov stability theorem are used to estimate the boundary of power limit, the influences of circuit parameters on the boundary of power limit of two estimation methods are also compared; T-S fuzzy modeling method and reverse trajectory tracking technique are used to estimate the region of asymptotic stability(RAS), the estimation precision as well as influences of circuit parameters of two estimation methods on estimating the region of asymptotic stability are also compared. Finally, the effectiveness of estimation methods used for the boundary of power limit and the region of asymptotic stability are verified by simulation results.

Key words： DC microgrid constant power load (CPL) large-signal stability boundary of power limit region of asymptotic stability (RAS)

Received: 30 June 2018 Published: 21 March 2019

PACS:

TM46

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	Teng Changpeng
	Wang Yubin
	Zhou Bokai
	Wang Fan
	Zhang Fengyi

Cite this article:

Teng Changpeng,Wang Yubin,Zhou Bokai等. Large-Signal Stability Analysis of DC Microgrid with Constant Power Loads[J]. Transactions of China Electrotechnical Society, 2019, 34(5): 973-982.

URL:

https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.L80648 OR https://dgjsxb.ces-transaction.com/EN/Y2019/V34/I5/973

[1] Neves M S, Aredes M A, Khezri H, et al.Advantages of grid-tied DC microgrid[C]//Power Electronics Conference (COBEP), Juiz de Fora, Brazil, 2017: 1-6.
[2] Lotfi H, Khodaei A.AC versus DC microgrid planning[J]. IEEE Transactions on Smart Grid, 2017, 8(1): 296-304.
[3] 张欣. 直流分布式系统稳定性研究[D]. 南京: 南京航空航天大学, 2014.
[4] 支娜, 张辉, 肖曦,等. 分布式控制的直流微电网系统级稳定性分析[J]. 中国电机工程学报, 2016, 36(2): 368-378.
Zhi Na, Zhang Hui, Xiao Xi, et al.System-level stability analysis of DC microgrid with distributed control strategy[J]. Proceedings of the CSEE, 2016, 36(2): 368-378.
[5] 伍文华, 陈燕东, 罗安, 等. 海岛VSC-HVDC输电系统直流阻抗建模、振荡分析与抑制方法[J]. 中国电机工程学报, 2018, 38(15): 4359-4368.
Wu Wenhua, Chen Yandong, Luo An, et al.DC impedance modeling, oscillation analysis and suppression method for VSC-HVDC system in the field of islands power supply[J]. Proceedings of the CSEE, 2018, 38(15): 4359-4368.
[6] 王建华, 张方华, 龚春英, 等. 带恒功率负载的DC/DC变换器起动过程分析[J]. 电工技术学报, 2009, 24(4): 121-125.
Wang Jianhua, Zhang Fanghua, Gong Chunying, et al.Start-up process analysis of DC/DC converter with constant power load[J]. Transactions of China Electrotechnical Society, 2009, 24(4): 121-125.
[7] 张阳, 张军明, 杜韦静. 负载动态下的级联系统大信号稳定性分析[J].电工技术学报, 2012, 27(10): 170-175.
Zhang Yang, Zhang Junming, Du Weijing.Large-signal stability of cascaded system under load transient[J]. Transactions of China Electrotechnical Society, 2012, 27(10): 170-175.
[8] 刘欣博, 周元钧, 张巍. 具有阻尼滤波器的恒功率负载系统在大扰动下的稳定性[J]. 电工技术学报, 2011, 26(增刊1): 154-160.
Liu Xinbo, Zhou Yuanjun, Zhang Wei.Large signal stability criteria for constant power loads with damped filters[J]. Transactions of China Electrotechnical Society, 2011, 26(S1): 154-160.
[9] 韦李军, 黄萌, 孙建军, 等. 带恒功率负载的光伏-储能混合发电系统非线性行为分析[J]. 电工技术学报, 2017, 32(7): 128-137.
Wei Lijun, Huang Meng, Sun Jianjun, et al.Nonlinear analysis of photovoltaic battery hybrid power system with constant power loads[J]. Transactions of China Electrotechnical Society, 2017, 32(7): 128-137.
[10] 张军明, 张弘强, 杜韦静. 级联高频DC/DC变换系统的大信号稳定性研究[J]. 电力电子技术, 2014, 48(6): 22-25.
Zhang Junming, Zhang Hongqiang, Du Weijing.The large-signal stability analysis of DC/DC cascaded system[J]. Power Electronics, 2014, 48(6): 22-25.
[11] Weiss L, Mathis W, Trajkovic L.A generalization of Brayton-Moser's mixed potential function[J]. IEEE Transactions on Circuits and Systems I: Fundamental Theory and Applications, 1998, 45(4): 423-427.
[12] Tomohiro T, Michio S.Fuzzy identification of systems and its applications to modeling and control[J]. IEEE Transactions on Systems, Man and Cybernetic, 1985, 15(1): 116-132.
[13] Kim H J, Kang S W, Seo G S, et al.Large-signal stability analysis of DC power system with shunt active damper[J]. IEEE Transactions on Industrial Electronics, 2016, 63(10): 6270-6280.
[14] 伍声宇, 张雪敏, 梅生伟. 公共直流母线供电的变频调速系统稳定域[J]. 电机与控制学报, 2011, 15(2): 7-12.
Wu Shengyu, Zhang Xuemin, Mei Shengwei.Region of stability of variable frequency speed regulation system with common DC bus[J]. Electric Machines and Control, 2011, 15(2): 7-12.
[15] Roberto G, Michele T, Antonio V.On the estimation of asymptotic stability regions: state of the art and new proposals[J]. IEEE Transactions on Automatic Control, 1985, 30(8): 747-755.