WANG Hongtao,LIN Chengqian,YANG Dong,et al.Coordinated optimization of multi-infeed HVDC system power regulation and generator output restoration[J].Electric Power Automation Equipment,2019,39(09):136-143.
WANG Hongtao,LIN Chengqian,YANG Dong,et al.Coordinated optimization of multi-infeed HVDC system power regulation and generator output restoration[J].Electric Power Automation Equipment,2019,39(09):136-143.DOI: 10.16081/j.epae.201909019.
Coordinated optimization of multi-infeed HVDC system power regulation and generator output restoration
After the blackout of the receiving-end power grid with multi-infeed HVDC(High Voltage Direct Current) system,it is an important means to speed up the load restoration process to give full play to the regulation ability of HVDC system after its startup. At the same time,higher requirements are put forward for system recovery control. In this context,a coordinated optimization method of multi-infeed HVDC system power regulation and generator output restoration in the receiving-end power grid is proposed. Firstly,the power regulation characteristics of multi-infeed HVDC system are analyzed from two aspects,namely the power regulation characteristics of HVDC system inverter station and the interaction effects between multi-infeed HVDC system and sending-/receiving-end AC systems,and the corresponding power regulation constraint model is established. Then,aiming at minimizing the generator climbing time and the power regulation time of HVDC system,the power adjustment model of multi-infeed HVDC system is set up by comprehensively considering the constraints of HVDC system,sending-/receiving-end systems and operation recovery of conventional generators,and the generator output optimization model of receiving-end system is constructed by considering the constraints of power balance,voltage and frequency security,spinning reserve and so on. On this basis,the problem is modeled as a bi-level mixed integer linear programming model,which realizes the coordinated optimization of traditional generator output and the tie-line power of HVDC system,minimizes the adjustment time of generator output regulation,and achieves the scheduling goal of avoiding small adjustment of HVDC system. Finally,the validity of the proposed model is verified by examples of IEEE 30-bus and 118-bus systems with multi-infeed HVDC system and IEEE 30-bus system with multiple wind farms.
LIANG Bomiao , LIN Zhenzhi , WEN Fushuan , et al . Dynamic strategy based on entropy weight theory for parallel restoration of generators [J]. Electric Power Automation Equipment , 2015 , 35 ( 5 ): 119 - 125,159 .
ZHOU Guangqi , GU Xueping , MA Shiying , et al . Restoration subsystem division based on integer linear programming and comprehensive evaluation of dividing schemes [J]. Electric Power Automation Equipment , 2019 , 39 ( 1 ): 91 - 98 .
WANG Dajiang , GU Xueping , JIA Jinghua . Relative efficiency of extended black-start restoration plans based on super efficiency data envelopment analysis model [J]. Electric Power Automation Equipment , 2015 , 35 ( 2 ): 62 - 67 .
CAO Xi , WANG Hongtao . Source-load coordinated restoration decision-making and control method for large scale power system [J]. Proceedings of the CSEE , 2017 , 37 ( 6 ): 1666 - 1676 .
ZHAO Jin , WANG Hongtao , CAO Xi . Bi-level optimization of load restoration considering the conditional value at risk of wind power [J]. Proceedings of the CSEE , 2017 , 37 ( 18 ): 5275 - 5285,5526 .
CHEN Bin , WANG Hongtao , CAO Xi . Load restoration optimization during the last stage of network reconfiguration consi-dering load fuzzy uncertainty [J]. Automation of Electric Power Systems , 2016 , 40 ( 20 ): 6 - 12 .
YE Mao , LIU Yan , GU Xueping , et al . Calculation of dynamic wind power penetration limit considering system transient safety under background of blackout [J]. Electric Power Automation Equipment , 2018 , 38 ( 11 ): 167 - 173 .
ZHOU Jian , LI Jianshe , SU Yinsheng . Analysis on start-up con-ditions of HVDC system in black-start [J]. Automation of Electric Power Systems , 2011 , 35 ( 3 ): 92 - 96 .
LI Baohong , LIU Tianqi , XU Weihua , et al . Research on tech-nical requirements of line-commutated converter-based high-voltage direct current participating in receiving end AC system’s black start [J]. IET Generation ,Transmission & Dis-tribution, 2016 , 10 ( 9 ): 2071 - 2078 .
LI Baohong , LIU Tianqi , XU Weihua , et al . Technical conditions of HVDC for involving in black-start of weak receiving AC system [J]. Electric Power Automation Equipment , 2016 , 36 ( 5 ): 23 - 29 .
LIU Changsheng , XIE Yunyun , ZHOU Qian , et al . Optimization of restoration path for blackout grid with the aid of high-voltage direct current transmission [J]. Proceedings of the CSEE , 2017 , 37 ( 9 ): 2579 - 2589 .
CHEN Bing , WANG Chenggen , LI Qun , et al . The method of priority starting HVDC power transmission system in the early stage of power grid black-start [J]. Power Electronics , 2017 , 51 ( 3 ): 106 - 110 .
LIN Weifang , TANG Yong , BU Guangquan . Definition and application of short circuit ratio for multi-infeed AC/DC power systems [J]. Proceedings of the CSEE , 2008 , 28 ( 31 ): 1 - 8 .
ZHOU Jian , SU Yinsheng , WANG Xinbao . The role of Yunnan-Guangdong ±800 kV DC project in CSG black-start and recovery process [J]. Southern Power System Technology , 2010 , 4 ( 4 ): 48 - 51 .
COFFRIN C , VAN HENTENRYCK P . A linear-programming approximation of AC power flows [J]. Informs Journal on Com-puting , 2014 , 26 ( 4 ): 718 - 734 .
LIN Chengqian , WANG Hongtao , ZHAO Jin , et al . Wind power-load coordinated restoration optimization of power system with DC terminal location based on credibility theory [J]. Power System Technology , 2019 , 43 ( 2 ): 410 - 417 .