The microgrid contains a large number of inverter based distributed generators, whose operation control and fault characteristics are different from that of traditional synchronous generators. The inverter control mode is analyzed. The simulation model of different operation control modes (grid-connected operation and islanding operation) in the microgrid is established on the DIgSILENT simulation software. The fault characteristics of both side and distribution line side, and the influence of the fault protection under different operation control modes are analyzed and compared, which provides the basis for the protection strategy of the distributed power microgrid.

Jiang Li ,Xu Yanlu, Zhu Heyan, Zhang Mingli, Yu Changyong, Lu Tianqi. Control Modeling and Fault Simulation Analysis in Microgrid. Academic Journal of Engineering and Technology Science (2019) Vol. 2 Issue 4: 107-120. https://doi.org/10.25236/AJETS.2019.020415.

[1] Wang Chengshan, Li Peng. Development and Challenges of Distributed Generation, Microgrid and Smart Distribution Network[J]. Automation of Electric Power Systems, 2010, 34(2): 10-14.
[2] WANG C S, LI P. Development and challenges of distributed generation, the micro-grid and smart distribution system [J]. Automation of Electric Power Systems, 2010, 34(2): 10-14.
[3] Ochoa L F, Harrison G P. Minimizing energy losses: Optimal accommodation and smart operation of renewable distributed generation [J]. IEEE Transactions on Power Systems, 2011, 26(1): 198-205.
[4] Banerjee B, Islam S M. Reliability based optimum location of distributed generation [J]. International Journal of Electrical Power & Energy Systems, 2011, 33(8): 1470-1478.
[5] Liu Yanghua, Wu Zhengqiu, Tu Youqing, et al. Overview of distributed generation and its grid-connected technology[J]. Power System Technology, 2008, 32(15): 71-76.
[6] LIU Y H, WU Z Q, TU Y Q, et al. A Survey on Distributed Generation and Its Networking Technology [J]. Power System Technology, 2008,32(15):71-76.
[7] Barker PP, De Mello R W. Determining the impact of distributed generation on power systems. I. Radial distribution systems [C]//Power Engineering Society Summer Meeting, 2000. IEEE. IEEE, 2000, 3: 1645-1656 .
[8] Zhang L, Sidhu T S. New Dynamic Voltage and Reactive Power Control Method for Distribution Networks with DG Integration [C]//Electrical Power and Energy Conference (EPEC), 2014 IEEE. IEEE, 2014: 190-195.
[9] Pouresmaeil E, Mehrasa M, Catalão J P S. A multifunction control strategy for the stable operation of DG units in smart grids [J]. IEEE Transactions on Smart Grid, 2015, 6(2): 598-607.
[10] Pan Guoqing, Zeng Dehui, Wang Gang, et al. Failure Analysis Method of Distribution Network with PQ Control Inverter Distributed Power Supply[J]. Proceedings of the CSEE, 2014, 34(4): 555-561.
[11] PAN G Q, ZENG D H, WANG G, et al. Fault analysis on distribution network with inverter interfaced distributed denerations based on PQ control strategy [J]. Proceedings of the CSEE, 2014, 34(4): 555-561.
[12] KONG Xiangping, ZHANG Zhe, YIN Xianggen, et al. Study on fault current characteristics and fault analysis method of grid with inverter type distributed power supply[J]. Proceedings of the CSEE, 2013, 33(34): 65-74.
[13] KONG X P, ZHANG Z, YIN X G, et al. Study on fault current characteristics and fault analysis method of power grid with inverter interfaced distributed generation [J]. Proceedings of the CSEE, 2013, 33(34): 65-74.
[14] Pan Tinglong, Wan Hongshu, Ji Zhicheng. Research on the operation of microgrid island based on improved droop control[J]. Control Engineering, 2014, 21(4): 496-500.
[15] PAN T L, WAN H J, JI Z C. Research on islanded operation of microgrids based on improved droop control [J]. Control Engineering of China, 2014, 21(4): 496-500.
[16] Caldon R, Stocco A, Turri R. Feasibility of adaptive intentional islanding operation of electric utility systems with distributed generation [J]. Electric Power Systems Research, 2008, 78(12): 2017-2023.
[17] WU Ning, XU Yang, LU Yuping. A New Algorithm for Fault Segment Location of Distribution Network under Distributed Generation[J]. Automation of Electric Power Systems, 2009 (14): 77-82.
[18] WU N, XU Y, LU Y P. New fault section location algorithm for distribution network with DG[J]. Automation of Electric Power Systems, 2009 (14): 77-82.
[19] LI Kaiwen, YUAN Rongxiang, DENG Xiangtian, et al. Improved matrix algorithm for ring network fault location with distributed power supply[J]. Electric Power System and Automation, 2014, 26(12): 62-68.
[20] LI K W, YUAN R X, DENG X T, et al. Improved matrix algorithm for fault location in ring distribution system with distributed generations [J]. Proceedings of the CSU-EPSA, 2014, 26(12): 62-68.