一种基于DSSC集中控制的实时优化分配方法
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摘要
分布式静止串联补偿器(DSSC)体积小、功耗低,可直接串接在输电线路上进行潮流控制,已成为最具前景的分布式柔性交流输电技术之一。为了解决DSSC系统中各子模块协调配合控制问题,文中针对各子模块运行状态、调节性能的差异性,按照"以状态分类-以调节性能制定优先级"的思想,提出了子模块调节出力的实时优化分配方法,实现子模块启停次数最少,延长子模块运行寿命的目标。基于实时数字仿真器对功率优化分配方法进行闭环仿真分析,结果表明,对比传统平均分配法和比例分配法,文中所述方法在调节速度和精度上有很大提高,能够满足DSSC的实时潮流调控要求。
The distributed static series compensator( DSSC) has the characteristics of small size and low power consumption,and it can be directly connected to the power line for power flow control which makes it become one of the most promising distributed flexible AC transmission technologies. In order to solve the problem of coordinated coordination control of each submodule in the DSSC system,the paper discusses the difference between the operating state and the adjustment performance of each sub-module,and proposes real-time optimization allocation method on the output of sub-module according to the idea of"classifying with state-setting performance with adjustment performance",to achieve the minimum number of start-stop submodules and to extend the operating life of the sub-module. Based on the RTDS platform,the closed-loop simulation analysis of the optimized allocation method is carried out. It is verified that the method can meet the power flow control requirements of DSSC. Compared with the traditional average distribution method and the proportional distribution method,the method has greatly improved the adjustment speed and adjustment accuracy.
The distributed static series compensator( DSSC) has the characteristics of small size and low power consumption,and it can be directly connected to the power line for power flow control which makes it become one of the most promising distributed flexible AC transmission technologies. In order to solve the problem of coordinated coordination control of each submodule in the DSSC system,the paper discusses the difference between the operating state and the adjustment performance of each sub-module,and proposes real-time optimization allocation method on the output of sub-module according to the idea of"classifying with state-setting performance with adjustment performance",to achieve the minimum number of start-stop submodules and to extend the operating life of the sub-module. Based on the RTDS platform,the closed-loop simulation analysis of the optimized allocation method is carried out. It is verified that the method can meet the power flow control requirements of DSSC. Compared with the traditional average distribution method and the proportional distribution method,the method has greatly improved the adjustment speed and adjustment accuracy.
引文
[1]DIVAN D,JOHAL H. Distributed FACTS-A new concept for realizing grid power flow control[J]. IEEE Transactions on Power Electronics,2007,22(6):2253-2260.
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[11]TAMBE P P,JOSHI K D. Power flow improvement using distributed static series compensator[C]∥International Journal of Engineering Research and Technology. ESRSA Publications,2012.
[12] RAYTHATHTHA K G,VYAS B Y. System parameters improvement of transmission line using Distributed Static Series Compensator(DSSC)[C]∥International Conference on Energy Efficient Technologies for Sustainability. IEEE,2016:459-463.
[13]FAJRI P,AFSHARNIA S. A PSCAD/EMTDC model for distributed static series compensator(DSSC)[C]∥International Conference on Electrical Engineering. IEEE,2008:1-6.
[14]KHALILIAN M,MOKHTARI M,GOLSHANNAVAZ S,et al.Distributed static series compensator(DSSC)for subsynchronous resonance alleviation and power oscillation damping[J].International Transactions on Electrical Energy Systems,2012,22(5):589-600.
[15]KHAZAIE J,MOKHTARI M,KHALILYAN M,et al. Subsynchronous resonance damping using distributed static series compensator(DSSC)enhanced with fuzzy logic controller[J].International Journal of Electrical Power&Energy Systems,2012,43(1):80-89.
[16]DIVAN D M,BRUMSICKLE W E,SCHNEIDER R S,et al.A distributed static series compensator system for realizing active power flow control on existing power lines[J]. IEEE Transactions on Power Delivery,2006,22(1):642-649.
[17]MOHAMMADREZA D G,MAHMUD F F,FARROKH A,et al. Optimal distributed static series compensator placement for enhancing power system load ability and reliability[C]∥IET Generation,Transmission&Distribution:IEEE,2014:84-88.
[18]LI M,WANG Y,FANG X,et al. On high precision distributed series compensator control in static referenceframe[C]∥Processing of the 7th international power electronics and motioncontrol conference:IEEE,2012:94-98.
[19]李顺,唐飞,廖清芬,等.基于多指标效能分析的分布式潮流控制器选址定容优化策略[J].电力系统自动化,2017,41(17):60-65.LI Shun,TANG Fei,LIAO Qingfen,et al. Location andcapacity optimization strategy of distributed power flow controller based on multi-indicator performance analysis[J]. Automation of Electric Power Systems,2017,41(17):60-65.
[20]范志华,苗世洪,刘子文,等.含多类型分布式电源的交直流混合微电网系统潮流控制策略研究[J].供用电,2018,35(7):20-27,48.FAN Zhihua,MIAO Shihong,LIU Ziwen,et al. Research on power flow control strategy of AC/DC hybrid microgrid system with multitype distributed power supply[J]. Distribution&Utilization,2018,35(7):20-27,48.
[21]卢俊.分布式潮流控制器的可靠性研究[D].武汉:武汉理工大学,2013.LU Jun. Research on reliability of distributed power flow controller[D]. Wuhan:Wuhan University of Technology,2013.
[2]GAIGOWAL S R,RENGE M M. Some studies of distributed series FACTS controller to control active power flow through transmission line[J]. IEEE International Conference on Power,Energy and Control(ICPEC),2013,1(6):124-128.
[3] MEHTA D,RAVINDRAN A,JOSHI B,et al. Graph theory based online optimal power flow control of power grid with distributed flexible AC transmission systems(D-FACTS)devices[C]∥2015 North American Power Symposium(NAPS),Charlotte,NC,2015:1-6.
[4]BRISSETTE A,MAKSIMOVIC D,LECRON Y. Distributed series static compensator deployment using a linearized transmission system model[J]. IEEE Transactions on Power Delivery,2015,30(3):1269-1277.
[5]张晓宇,顾乔根,文继锋,等.统一潮流控制器系统串联变压器保护设计[J].电力系统自动化,2017,41(17):72-77.ZHANG Xiaoyu,GU Qiaogen,WEN Jifeng,et al. Series transformer protection design in unified power flow controller system[J]. Automation of Electric Power Systems,2017,41(17):72-77.
[6]徐卓林,黄奇,李卓然,等.一种针对串联补偿的综合效益评估方法[J].广东电力,2017,30(3):11-14.XU Zhuolin,HUANG Qi,LI Zhuoran,et al. An assessment method for comprehensive benefit of series compensation[J].Guangdong Electric Power,2017,30(3):11-14.
[7]温才权,吴志宇,李先宁,等.一种基于等离子的串联补偿电容器间隙技术[J].广东电力,2018,31(8):182-187.WEN Caiquan,WU Zhiyu,LI Xianning,et al. Research on series compensator capacitor gap technology based on plasma[J].Guangdong Electric Power,2018,31(8):182-187.
[8]MOHAMMADREZA D G,MAHMUD F F,FARROKH A,et al. Optimal distributed static series compensator placement for enhancing power system loadability and reliability[J]. IET Generation Transmission&Distribution,2015,9(11):1043-1050.
[9]吴杰康,蒋程,张建华,等.一种优化系统动态性能的新型SSSC控制策略[J].电工技术学报,2011,26(12):156-161.WU Jiekang,JIANG Cheng,ZHANG Jianhua,et al. A novel static synchronous series compensator control strategy for improving the dynamic performance of power system[J]. Transactions of China Electrotechnical Society,2011,26(12):156-161.
[10]JALAYER R,MOKHTARI H. A Simple three-phase model for distributed static series compensator(DSSC)in newton power flow[C]∥Asia-Pacific Power and Energy Engineering Conference. IEEE,2009:1-5.
[11]TAMBE P P,JOSHI K D. Power flow improvement using distributed static series compensator[C]∥International Journal of Engineering Research and Technology. ESRSA Publications,2012.
[12] RAYTHATHTHA K G,VYAS B Y. System parameters improvement of transmission line using Distributed Static Series Compensator(DSSC)[C]∥International Conference on Energy Efficient Technologies for Sustainability. IEEE,2016:459-463.
[13]FAJRI P,AFSHARNIA S. A PSCAD/EMTDC model for distributed static series compensator(DSSC)[C]∥International Conference on Electrical Engineering. IEEE,2008:1-6.
[14]KHALILIAN M,MOKHTARI M,GOLSHANNAVAZ S,et al.Distributed static series compensator(DSSC)for subsynchronous resonance alleviation and power oscillation damping[J].International Transactions on Electrical Energy Systems,2012,22(5):589-600.
[15]KHAZAIE J,MOKHTARI M,KHALILYAN M,et al. Subsynchronous resonance damping using distributed static series compensator(DSSC)enhanced with fuzzy logic controller[J].International Journal of Electrical Power&Energy Systems,2012,43(1):80-89.
[16]DIVAN D M,BRUMSICKLE W E,SCHNEIDER R S,et al.A distributed static series compensator system for realizing active power flow control on existing power lines[J]. IEEE Transactions on Power Delivery,2006,22(1):642-649.
[17]MOHAMMADREZA D G,MAHMUD F F,FARROKH A,et al. Optimal distributed static series compensator placement for enhancing power system load ability and reliability[C]∥IET Generation,Transmission&Distribution:IEEE,2014:84-88.
[18]LI M,WANG Y,FANG X,et al. On high precision distributed series compensator control in static referenceframe[C]∥Processing of the 7th international power electronics and motioncontrol conference:IEEE,2012:94-98.
[19]李顺,唐飞,廖清芬,等.基于多指标效能分析的分布式潮流控制器选址定容优化策略[J].电力系统自动化,2017,41(17):60-65.LI Shun,TANG Fei,LIAO Qingfen,et al. Location andcapacity optimization strategy of distributed power flow controller based on multi-indicator performance analysis[J]. Automation of Electric Power Systems,2017,41(17):60-65.
[20]范志华,苗世洪,刘子文,等.含多类型分布式电源的交直流混合微电网系统潮流控制策略研究[J].供用电,2018,35(7):20-27,48.FAN Zhihua,MIAO Shihong,LIU Ziwen,et al. Research on power flow control strategy of AC/DC hybrid microgrid system with multitype distributed power supply[J]. Distribution&Utilization,2018,35(7):20-27,48.
[21]卢俊.分布式潮流控制器的可靠性研究[D].武汉:武汉理工大学,2013.LU Jun. Research on reliability of distributed power flow controller[D]. Wuhan:Wuhan University of Technology,2013.