孤岛运行的交直流混合微电网小信号稳定性分析

doi:10.3969/j.issn.1000－7229.2017.01.013

电力建设 ›› 2017, Vol. 38 ›› Issue (1): 96-.doi: 10.3969/j.issn.1000－7229.2017.01.013

孤岛运行的交直流混合微电网小信号稳定性分析

向阳1，付明2，张爱芳3，窦晓波4，焦阳4，杨野青4

1.国网武汉供电公司客户服务中心汉口分中心，武汉市430000；2.国电南瑞科技股份有限公司，
南京市210096；3.国网电力科学研究院武汉南瑞有限责任公司发展建设部，

武汉市430000；4.东南大学电气工程学院，南京市210096

出版日期:2017-01-01
作者简介:向阳(1971)，男，硕士，高级工程师，主要从事智能电网新技术等方面的相关研究工作；付明(1986)，男，硕士，主要从事微电网运行控制领域方面的工作；张爱芳(1977)，女，硕士，主要从事智能电网新技术应用与推广工作；窦晓波(1979)，男，副教授，博士生导师，主要研究方向为分布式发电技术与微电网；焦阳(1993)，男，硕士研究生，主要研究方向为储能变换器等；杨野青(1989)，男，硕士，主要研究方向为储能变流器优化控制。
基金资助:
国家高技术研究发展计划项目（863计划）（2014AA052002）；国家自然科学基金项目（51307023）；江苏省科技计划项目（BE2015012-1）；国家电网公司科技项目（随机性电源即插即用关键技术研究及应用）

Small Signal Stability Analysis of AC/DC Hybrid Microgrid Under Isolated Island Operation

XIANG Yang1, FU Ming2, ZHANG Aifang3, DOU Xiaobo4,JIAO Yang4, YANG Yeqing4

1. State Grid Wuhan Power Supply Company Customer Service Center Hankou Sub-Center, Wuhan 430000, China;
2. Nari Technology Development Limited Company, Nanjing 210096, China; 3. Development and Construction

Department of China Electric Power Research Institute Wuhan Nari limited liability company, Wuhan 430000, China;

4. School of Electrical Engineering, Southeast University, Nanjing 210096, China

Online:2017-01-01
Supported by:
Project supported by National High Technology Research and Development of China(863 Program)(2014AA052002)；National Natural Science Foundation of China(51307023)

摘要/Abstract

摘要： 与纯交流微电网相比，交直流混合微电网具有诸多优势，是目前的研究热点。当交直流混合微电网与大电网断开，孤岛运行时，由于各个分布式电源(distribution generation，DG)均是电力电子接口，系统惯性较小，而且交流侧与直流侧通过主变流器相互耦合，一侧的不稳定必然会影响到另一侧，因此，其小信号稳定性问题变得更为复杂。该文建立了包含DG、储能、负荷以及主变流器的交直流混合微电网模型，对其进行了特征值分析并找出了系统的主要振荡模式以及其阻尼比、所对应的状态变量等信息。通过根轨迹分析法，改变特定元件的参数，提高了低阻尼振荡模式的阻尼比，有效改善了系统的稳定性，并通过时域仿真对小信号分析结果进行了验证。

关键词: 交直流混合微电网, 小信号稳定性, 特征值分析

Abstract: Compared with pure AC microgrid, AC/DC hybrid microgrid has many advantages, which has become a hot topic. When AC/DC hybrid micro-grid is disconnected with power grid and under isolated island operation, because that each distribution generation (DG) is power electronic interface, the system inertia is small; and the AC side and the DC side are coupled to each other through the main converter, the unstable side is bound to affect the other side, so the small signal stability problem becomes more complex. This paper establishes the model for AC/DC hybrid microgrid which including DG, energy storage, load and main converter, then finds out the systems main oscillation mode and its damping ratio, corresponding state variables through eigenvalue analysis. The proposed method can change the parameters of a particular element to improve the damping ratio in low damping oscillation mode by root locus analysis. Whats more, it effectively improves the stability of the system, and the small-signal analysis results are verified through time-domain simulation.

Key words: AC/DC hybrid microgrid, small signal stability, eigenvalue analysis

中图分类号:

TM 732

向阳，付明，张爱芳，窦晓波，焦阳，杨野青. 孤岛运行的交直流混合微电网小信号稳定性分析[J]. 电力建设, 2017, 38(1): 96-.

XIANG Yang, FU Ming, ZHANG Aifang, DOU Xiaobo,JIAO Yang, YANG Yeqing. Small Signal Stability Analysis of AC/DC Hybrid Microgrid Under Isolated Island Operation[J]. Electric Power Construction, 2017, 38(1): 96-.

参考文献

［1］JIN C, LOH P C, WANG P, et al. Autonomous operation of hybrid AC-DC microgrids［C］//Sustainable Energy Technologies (ICSET), 2010 IEEE International Conference on. Kandy, Sri Lanka: IEEE, 2010: 1-7.

［2］LOH P C, LI D, CHAI Y K, et al. Hybrid AC-DC microgrids with energy storages and progressive energy flow tuning［J］. IEEE Transactions on Power Electronics, 2013, 28(4): 1533-1543.

［3］LOH P C, LI D, CHAI Y K, et al. Autonomous operation of hybrid AC-DC microgrids with progressive energy flow tuning［C］//2012 Twenty-Seventh Annual IEEE Applied Power Electronics Conference and Exposition (APEC). Orlando, FL:IEEE, 2012:1056-1060.

［4］MADHAVI V, VITHAL J V R. Modeling andcoordination control of hybrid AC/DC microgrid［J］. International Journal of Emerging Technology and Advanced Engineering, 2014, 4(8):606-612.

［5］GUANGQIAN D, FENG G A O, ZHANG S, et al. Control of hybrid AC/DC microgrid under islanding operational conditions［J］. Journal of Modern Power Systems and Clean Energy, 2014, 2(3): 223-232.

［6］MOHAMED A, SALEHI V, MOHAMMED O. Real-time energy management algorithm for mitigation of pulse loads in hybrid microgrids［J］. IEEE Transactions on Smart Grid, 2012, 3(4): 1911-1922.

［7］ LOH P C, LI D, BLAABJERG F. Autonomous control of interlinking converters in hybrid AC-DC microgrids with energy storages［C］//2011 IEEE Energy Conversion Congress and Exposition. Phoenix, AZ:IEEE, 2011: 652-658.

［8］KATIRAEI F, IRAVANI M R. Power management strategies for a microgrid with multiple distributed generation units［J］. IEEE Transactions on Power Systems, 2006, 21(4): 1821-1831.

［9］李洋，张辉，苏冰，等. 含多微源的微电网离网运行小信号稳定性分析［J］.电力自动化设备，2015，35(1)：159-164.

LI Yang，ZHANG Hui，SU Bing，et al.Multi-level voltage control partitioning based on multi-objective modularity ［J］.Electric Power Automation Equipment,2015，35(1)：159-164.

［10］周丹，赵波，张雪松，等. 离网型微电网主电源储能逆变器的小信号建模及稳定性分析［J］.低压电器，2013（23）：30-34.

ZHOU Dan，ZHAO Bo，ZHANG Xuesong，et al.Small signal modeling and stability analysis for energy storage inverter as primary source in off-grid micro grid［J］.Low Voltage Apparatus,2013（23）：30-34.

［11］FENG W, GUAN Y, YIBO W, et al. Stability analysis of hydraulic-PV hybrid micro-grid based on small-signal dynamic model［C］//Electrical Machines and Systems (ICEMS), 2013 International Conference on. Papporo: IEEE, 2013: 285-290.

［12］MISHRA S, RAMASUBRAMANIAN D.Improving the small signal stability of a PV-DE-dynamic load-based microgrid using an auxiliary signal in the PV control loop［J］. IEEE Transactions on Power Systems, 2014, 30(1):166-176.

［13］TANG X, DENG W, QI Z. Investigation of the dynamic stability of microgrid［J］. IEEE Transactions on Power Systems, 2014, 29(2):698-706.

［14］TABATABAEE S, KARSHENAS H R, BAKHSHAI A, et al.Investigation of droop characteristics and X/R ratio on small-signal stability of autonomous Microgrid［C］//Power Electronics, Drive Systems and Technologies Conference (PEDSTC).Tehran:IEEE, 2011: 223-228.

［15］郑竞宏，李兴旺，王燕廷，等. 微电网切换至孤岛运行时的小信号稳定性分析［J］.电力系统自动化，2012，36(15)：25-32.

ZHENG Jinghong，LI Xingwang，WANG Yanting，et al.Small-signal stability analysis of a micro grid switching to the islands mode［J］.Automation of Electric Power Systems, 2012，36(15)：25-32.

［16］VENKATARAMANAN G, ILLINDALA M.Small signal dynamics of inverter interfaced distributed generation in a chain-microgrid［C］//Power Engineering Society General Meeting, 2007.Tampa, FL:IEEE, 2007: 1-6.

［17］BOTTRELL N, PRODANOVIC M, GREEN T C. Dynamic stability of a microgrid with an active load［J］. IEEE Transactions on Power Electronics, 2013, 28(11): 5107-5119.

［18］POGAKU N, PRODANOVIC M, GREEN T C. Modeling, analysis and testing of autonomous operation of an inverter-based microgrid［J］.IEEE Transactions on Power Electronics, 2007, 22(2): 613-625.

［19］MA J, WANG X, LAN X.Small-signal stability analysis of microgrid based on perturbation theory［C］//Power and Energy Engineering Conference (APPEEC), 2012 Asia-Pacific.Shanghai:IEEE, 2012: 1-4.

［20］SHI H, ZHUO F, HOU L, et al.Small-signal stability analysis of a microgrid operating in droop control mode［C］//ECCE Asia Downunder (ECCE Asia). Melbourne:IEEE, 2013: 882-887.

［21］ENGLER A, SOULTANIS N.Droop control in LV-grids［C］//Future Power Systems, 2005 International Conference on. Amsterdam:IEEE, 2005: 6-6.

［22］ZHU M, LI H, LI X. Improved state-space model and analysis of islanding inverter-based microgrid［C］//2013 IEEE International Symposium on Industrial Electronics. Taipei, Taiwan:IEEE, 2013:1-5.

［23］KUNDUR P. Power system stability and control［M］. New York: McGraw-hill, 1994.

［24］MD R, JACOB A，JONATHAN W. An accurate small-signal model of inverter dominated islanded microgrids usingdq reference frame［J］. IEEE Transactions on Power Electronics, 2014, 2(4):1070-1080.

[1]	朱永强，张泉，刘康，王植，韩民晓. 交直流混合微电网互联变流器新型控制策略[J]. 电力建设, 2019, 40(11): 48-54.
[2]	朱永强，刘康，张泉，田源，蔡冰倩，夏瑞华. 考虑储能系统调度的交直流混合微电网中互联变流器容量配置[J]. 电力建设, 2019, 40(10): 84-93.
[3]	朱永强, 王福源，赵娜，贾利虎. 主从控制混合微电网中互联变流器控制策略[J]. 电力建设, 2018, 39(8): 102-110.
[4]	朱永强, 唐萁，贾利虎. 新型交直流混合微电网拓扑及其可靠性分析[J]. 电力建设, 2017, 38(9): 81-.
[5]	郭雅娟，陈锦铭，何红玉，吴倩红，韩蓓，李国杰. 交直流混合微电网接入分布式新能源的关键技术研究综述[J]. 电力建设, 2017, 38(3): 9-.
[6]	王皓界, 韩民晓, 孔启祥. 交直流混合微电网储能DC/DC及接口换流器协调控制[J]. 电力建设, 2016, 37(5): 50-56.
[7]	华浩瑞，李鹏. 计及功率预测误差的交直流混合微电网多时间尺度优化运行方法[J]. 电力建设, 2016, 37(12): 40-.
[8]	谢文超，朱永强，杜少飞，夏瑞华. 交直流混合微电网中互联变流器功率控制[J]. 电力建设, 2016, 37(10): 9-.
[9]	刘兴杰，杜哲，严逍. 独立交直流混合微电网电源优化配置[J]. 电力建设, 2016, 37(10): 16-.

孤岛运行的交直流混合微电网小信号稳定性分析

Small Signal Stability Analysis of AC/DC Hybrid Microgrid Under Isolated Island Operation

PDF

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 9

编辑推荐

Metrics

本文评价