含异构微源的混合型孤岛微电网暂态有功响应分析与控制策略

doi:10.19595/j.cnki.1000-6753.tces.231449

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摘要

在逆变器接口微源(IM)与同步机接口微源(SM)并存的混合型孤岛微电网中,由于两类微源的物理结构与动态特性差异,易导致微电网有功负荷投切暂态响应存在初始有功分配不均、响应速度慢的问题。在有功负荷突增场景下,IM在暂态初始阶段中有功输出峰值过高,易触发逆变器限流保护动作。本文首先以IM与SM并联系统为研究对象,分析两类微源有功负荷突增暂态的角频率响应差异,进一步得出造成暂态初始阶段IM输出有功峰值过高的原因。为量化并联系统响应速度,构建并联系统传递函数模型,分析系统主导极点的分布对响应速度的影响。随后,针对混合型孤岛微电网的暂态有功控制策略进行研究。在不引入通信的情况下,引入虚拟电抗法调节初始有功分配,通过控制参数优化加快系统响应速度。在引入通信情况下,提出IM的附加控制方法,实现并联系统暂态有功性能的改善,并将该控制推广到含多台异构微源的混合型孤岛微电网。最后,基于Matlab/Simulink时域仿真验证了本文分析结论与控制策略的有效性。

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关键词 ：混合型孤岛微电网, 有功负荷分配, 控制参数优化, 暂态性能改善

Abstract：

At present, most of the island microgrid demonstration projects at home and abroad are hybrid island microgrids in which inverter interface microsource (IM) and synchronous machine interface microsource (SM) coexist. There are large differences in physical structure and dynamic characteristics between SM and IM, which causes the hybrid island microgrid to have problems of uneven distribution of active power and slow response speed in the transient response of active load switching, showing poor transient performance. In the scenario of a sudden increase in active load, the IM's active power output peak value is too high in the initial transient stage, which can easily trigger the inverter current limiting protection and reduce system stability. Therefore, improving the transient performance of hybrid microgrids under sudden increases in active load is the key to ensuring the stable operation of microgrids.
This paper first takes the IM and SM parallel system as the research object, and divides the active power output of SM and IM during the transient process of sudden increase in active load into initial active power distribution and dynamic active power transfer. Among them, the initial active power distribution is mainly related to the external equivalent reactance ratio of the microsources, the dynamic active power transfer is mainly related to the difference in angular frequency response between SM and IM. Then, the differences in the external equivalent reactance and angular frequency response of the heterogeneous microsources were analyzed respectively, and the reasons for the excessively high peak active power output of the IM in the initial transient stage were obtained. To quantify the response speed of the parallel system, taking the active load sudden increase as the input and the phase angle difference between SM and IM as the output, the transfer function of the heterogeneous microsources parallel system was constructed, and the influence of the dominant poles' distribution on the response speed was analyzed. Based on the analysis results, a transient active power control strategy for a hybrid island microgrid containing heterogeneous microsources is studied. Without introducing communication, the virtual reactance method is introduced to adjust the initial active power distribution of heterogeneous microsources. At the same time, the dominant pole distribution of the system is changed by adjusting the proportional gain and integral gain of the SM governor to speed up the system response speed. In the case of introducing communication, by introducing the IM additional control strategy, it can suppress IM's active power output peak value in the initial transient stage and accelerate the system response speed simultaneously, and extend this strategy to the hybrid island microgrid with multiple heterogeneous microsources.
Finally, the effectiveness of the analysis conclusion and control strategy of this paper was verified based on Matlab/Simulink time domain simulation. Four calculation examples were constructed: SM and IM parallel system, hybrid island microgrid containing multiple SMs and IMs, heterogeneous microsources island microgrid containing PV, and heterogeneous microsources island microgrid containing PQ-controlled energy storage system. It is verified that the IM additional control strategy can improve the transient performance of the hybrid microgrid in the scenario of a sudden increase in active load.

Key words： Hybrid island microgird Active power distribution Control parameter optimization transient performance improvement

收稿日期: 2023-09-01

PACS:

TM711

基金资助:

国家重点研发计划青年科学家资助项目（2022YFB2405500）

通讯作者: 吴翔宇, 男,1990年生,副教授,硕士生导师,研究方向为微电网运行控制、可再生能源电力系统振荡分析与抑制、韧性电网。E-mail：wuxiangyu@bjtu.edu.cn

作者简介: 赵郅毅男,1998年生,博士研究生,研究方向为混合型微电网暂态分析。E-mail：23111447@bjtu.edu.cn

引用本文:

赵郅毅, 许寅, 吴翔宇, 董江浩. 含异构微源的混合型孤岛微电网暂态有功响应分析与控制策略[J]. 电工技术学报, 0, (): 9040-40. Zhao Zhiyi, Xu Yin, Wu Xiangyu, Dong Jianghao. Transient Active Power Response Analysis and Control Strategy of Hybrid Island Microgrid Containing Heterogeneous Microsources. Transactions of China Electrotechnical Society, 0, (): 9040-40.

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[1] 张靖, 张志文, 胡斯佳, 等. 独立微电网风储协同调频的功率柔性分配策略[J]. 电工技术学报, 2022, 37(15): 3767-3780.
Zhang Jing, Zhang Zhiwen, Hu Sijia, et al.A flexible power distribution strategy with wind turbine generator and energy storage for frequency regulation in isolated microgrid[J]. Transactions of China Electrotechnical Society, 2022, 37(15): 3767-3780.
[2] 吴忠强, 程洪强. 考虑状态受限的微电网二次电压与频率固定时间控制[J]. 电工技术学报, 2023, 38(15): 4107-4119.
Wu Zhongqiang, Cheng Hongqiang.Fixed-time secondary voltage and frequency control for microgrid considering state-constrained[J]. Transactions of China Electrotechnical Society, 2023, 38(15): 4107-4119.
[3] 黄文焘, 邰能灵, 刘剑青, 等. 微电网多层级协同反时限保护方案[J]. 电工技术学报, 2021, 36(3): 623-633.
Huang Wentao, Tai Nengling, Liu Jianqing, et al.Multi-layer collaborative inverse-time protection schemes for microgrids[J]. Transactions of China Electrotechnical Society, 2021, 36(3): 623-633.
[4] 盛德刚, 徐运兵, 王晓丹, 等. 孤岛运行模式下的低压微电网控制策略[J]. 电气技术, 2018, 19(1): 34-39.
Sheng Degang, Xu Yunbing, Wang Xiaodan, et al.Control strategy of low voltage micro-grid in island mode[J]. Electrical Engineering, 2018, 19(1): 34-39.
[5] 杨欢, 赵荣祥, 辛焕海, 等. 海岛电网发展现状与研究动态[J]. 电工技术学报, 2013, 28(11): 95-105.
Yang Huan, Zhao Rongxiang, Xin Huanhai, et al.Development and research status of island power systems[J]. Transactions of China Electrotechnical Society, 2013, 28(11): 95-105.
[6] Kundur P, Malik O P.Power system stability and control[M]. 2nd ed. McGraw-Hill Education, 2022.
[7] Lasseter R H.Control and design of microgrid components[M]. PSERC Publication 06-03, 2006.
[8] Krishnamurthy S, Jahns T M, Lasseter R H.The operation of diesel gensets in a CERTS microgrid[C]//2008 IEEE Power and Energy Society General Meeting - Conversion and Delivery of Electrical Energy in the 21st Century, Pittsburgh, PA, USA, 2008: 1-8.
[9] Erickson M J, Lasseter R H.Integration of battery energy storage element in a CERTS microgrid[C]//2010 IEEE Energy Conversion Congress and Exposition, Atlanta, GA, USA, 2010: 2570-2577.
[10] Renjit A A, Illindala M S, Lasseter R H, et al.Modeling and control of a natural gas generator set in the CERTS microgrid[C]//2013 IEEE Energy Conversion Congress and Exposition, Denver, CO, USA, 2013: 1640-1646.
[11] Renjit A A, Illindala M S, Klapp D A.Modeling and analysis of the CERTS microgrid with natural gas powered distributed energy resources[C]//2015 IEEE/IAS 51st Industrial & Commercial Power Systems Technical Conference (I&CPS), Calgary, AB, Canada, 2015: 1-8.
[12] 付熙坤,黄萌,凌扬坚,等.功率耦合和电流限幅影响下构网型变流器的暂态同步稳定分析[J/OL].中国电机工程学报:1-12[2023-08-29].http://kns.cnki.net/kcms/detail/11.2107.tm.20230815.1513.008.html.
[13] 刘陈瑞扬, 付立军, 胡祺, 等. 柴发机组与逆变器并联运行暂稳态功率均分控制方法[J]. 电机与控制学报, 2022, 26(3): 10-21.
Liu Chenruiyang, Fu Lijun, Hu Qi, et al.Transient and steady-state power sharing control method for parallel operation of diesel generator set and inverter[J]. Electric Machines and Control, 2022, 26(3): 10-21.
[14] 周晖, 王跃, 李明烜, 等. 孤岛并联虚拟同步发电机暂态功率分配机理分析与优化控制[J]. 电工技术学报, 2019, 34(增刊2): 654-663.
Zhou Hui, Wang Yue, Li Mingxuan, et al.Analysis and optimal control of transient active power sharing between islanded parallel virtual synchronous generators[J]. Transactions of China Electrotechnical Society, 2019, 34(S2): 654-663.
[15] Paquette A D, Reno M J, Harley R G, et al.Transient load sharing between inverters and synchronous generators in islanded microgrids[C]//2012 IEEE Energy Conversion Congress and Exposition (ECCE), Raleigh, NC, USA, 2012: 2735-2742.
[16] Paquette A D, Reno M J, Harley R G, et al.Sharing transient loads: causes of unequal transient load sharing in islanded microgrid operation[J]. IEEE Industry Applications Magazine, 2014, 20(2): 23-34.
[17] Paquette A, Divan D.Transient droop for improved transient load sharing in microgrids[C]//2014 IEEE Energy Conversion Congress and Exposition (ECCE), Pittsburgh, PA, USA, 2014: 84-91.
[18] 代维, 秦文萍, 任春光, 等. 含同步机微网中基于解耦下垂的自适应虚拟阻抗控制[J]. 中国电机工程学报, 2020, 40(14): 4486-4495, 4728.
Dai Wei, Qin Wenping, Ren Chunguang, et al.Adaptive virtual impedance control based on decoupling droop in microgrid with synchronous generators[J]. Proceedings of the CSEE, 2020, 40(14): 4486-4495, 4728.
[19] 李艺丰. 含VSG和柴油发电机的孤岛微电网协调控制策略研究[D]. 长沙: 湖南大学, 2020.
[20] Peng Yelun, Zhang Xin.Analysis and improvement of transient load sharing between synchronous generator and virtual synchronous generator in islanded microgrid[C]//2020 IEEE 9th International Power Electronics and Motion Control Conference (IPEMC2020-ECCE Asia), Nanjing, China, 2021: 1224-1228.
[21] Peng Yelun, Zhang Xin, Zhan Li.Transient load sharing between grid-forming generators in islanded microgrid[C]//2020 IEEE Energy Conversion Congress and Exposition (ECCE), Detroit, MI, USA, 2020: 3867-3871.
[22] 彭也伦, 黄文, 帅智康. 含异构微源孤岛微电网的瞬时有功功率分配问题研究[J]. 中国电机工程学报, 2021, 41(15): 5167-5179.
Peng Yelun, Huang Wen, Shuai Zhikang.Research on transient load sharing in islanded microgrids with heterogeneous DGs[J]. Proceedings of the CSEE, 2021, 41(15): 5167-5179.
[23] Peng Yelun, Shuai Zhikang, Huang Wen, et al.Design-oriented analysis and enhancement of transient power sharing between inverter-interfaced generators and synchronous generators[J]. CSEE Journal of Power and Energy Systems, 2022: 1-10. DOI: 10.17775/CSEEJPES.2021.07360.