Operation Optimization of DC Distribution Network with Multi-time Scale

doi:10.11930/j.issn.1004-9649.201706154

Abstract

Abstract: In order to realize the safe and reliable operation of DC distribution network, two operation optimization models of DC distribution network are established in this paper. Firstly, the objective functions of DC distribution network operation optimization are discussed. Aimed at the above objective functions, two DC distribution network operation optimization models are proposed:one is the real-time power flow optimization model with power loss and voltage deviation as the objective functions; the other is the day-ahead optimization model considering the source network load characteristics, with the daily operating costs and load variance as the objective functions of load shifting optimization. The solutions of the two models are given, and the two models are simulated in a 9-node DC distribution network. The simulation results verify the effectiveness of the models in improving the DC power flow distribution and load shifting.

Key words: DC distribution network, multi-objective optimization, multi-time scale, power flow optimization, load shifting

CLC Number:

TM72

YI Yue, YUAN Zhichang, ZHENG Hao, SHI Zinan, MA Weijing. Operation Optimization of DC Distribution Network with Multi-time Scale[J]. Electric Power, 2018, 51(10): 64-71.

Add to citation manager EndNote|Ris|BibTeX

URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.201706154

https://www.electricpower.com.cn/EN/Y2018/V51/I10/64

References

[1] 江道灼, 郑欢. 直流配电网研究现状与展望[J]. 电力系统自动化, 2012, 36(8):98-104 JIANG Daozhuo, ZHENG Huan. Research status and developing prospect of DC distribution network[J]. Automation of Electric Power Systems, 2012, 36(8):98-104
[2] 宋强, 赵彪, 刘文华, 等. 智能直流配电网研究综述[J]. 中国电机工程学报, 2013, 33(25):9-19, 5 SONG Qiang, ZHAO Biao, LIU Wenhua, et al. An overview of research on smart DC distribution power network[J]. Proceedings of the CSEE, 2013, 33(25):9-19, 5
[3] 郑欢, 江道灼, 杜翼. 交流配电网与直流配电网的经济性比较[J]. 电网技术, 2013, 37(12):3368-3374 ZHENG Huan, JIANG Daozhuo, DU Yi. Economic comparison of AC and DC distribution system[J]. Power System Technology, 2013, 37(12):3368-3374
[4] 曾嘉思, 徐习东, 赵宇明. 交直流配电网可靠性对比[J]. 电网技术, 2014, 38(9):2582-2589 ZENG Jiasi, XU Xidong, ZHAO Yuming. Reliability comparison of AC and DC distribution network[J]. Power System Technology, 2014, 38(9):2582-2589
[5] 李可. 直流配电网拓扑结构与可靠性研究[D]. 北京:华北电力大学(北京), 2014.
[6] SHAMSI P, FAHIMI B. Stability assessment of a DC distribution network in a hybrid micro-grid application[J]. IEEE Transactions on Smart Grid, 2014, 5(5):2527-2534.
[7] HAILESELASSIE T M, UHLEN K. Power flow analysis of multi-terminal HVDC networks[C]//2011 Power Tech, IEEE Trondheim. IEEE, 2011:1-6.
[8] 雷婧婷, 安婷, 杜正春, 等. 含直流配电网的交直流潮流计算[J]. 中国电机工程学报, 2016, 36(4):911-918 LEI Jingting, AN Ting, DU Zhengchun, et al. A unified AC/DC power flow algorithm with DC distribution[J]. Proceedings of the CSEE, 2016, 36(4):911-918
[9] 孙银锋, 吴学光, 汤广福, 等. 基于节点阻抗矩阵GS法的直流电网稳态潮流计算[J]. 中国电机工程学报, 2015, 35(8):1882-1892 SUN Yinfeng, WU Xueguang, TANG Guangfu, et al. A nodal impedance matrix based gauss-seidel method on steady state power flow calculation of DC power grid[J]. Proceedings of the CSEE, 2015, 35(8):1882-1892
[10] 杜翼, 江道灼, 尹瑞, 等. 直流配电网拓扑结构及控制策略[J]. 电力自动化设备, 2015, 35(1):139-145 DU Yi, JIANG Daozhuo, YIN Rui, et al. Topological structure and control strategy of DC distribution network[J]. Electric Power Automation Equipment, 2015, 35(1):139-145
[11] 季一润, 袁志昌, 赵剑锋, 等. 一种适用于柔性直流配电网的电压控制策略[J]. 中国电机工程学报, 2016, 36(2):335-341 JI Yirun, YUAN Zhichang, ZHAO Jianfeng, et al. A suitable voltage control strategy for DC distribution power network[J]. Proceedings of the CSEE, 2016, 36(2):335-341
[12] 于亚男, 金阳忻, 江全元, 等. 基于RT-LAB的柔性直流配电网建模与仿真分析[J]. 电力系统保护与控制, 2015, 43(19):125-130 YU Yanan, JIN Yangxin, JIANG Quanyuan, et al. RT-LAB based modeling and simulation analysis of flexible DC distribution network[J]. Power System Protection and Control, 2015, 43(19):125-130
[13] 高一波, 徐习东, 金阳忻, 等. 交流侧接地故障对直流配电网电压平衡影响[J]. 电网技术, 2014, 38(10):2665-2670 GAO Yibo, XU Xidong, JIN Yangxin, et al. Impact on the voltage balancing of DC distribution network under AC side grounding fault[J]. Power System Technology, 2014, 38(10):2665-2670
[14] 张达. 直流配电网电磁暂态仿真算法研究[D]. 杭州:浙江大学, 2014.
[15] 马骏超, 江全元, 余鹏, 等. 直流配电网能量优化控制技术综述[J]. 电力系统自动化, 2013, 37(24):89-96 MA Junchao, JIANG Quanyuan, YU Peng, et al. Survey on energy optimized control technology in DC distribution on network[J]. Automation of Electric Power Systems, 2013, 37(24):89-96
[16] 李永刚, 韩冰, 刘天皓. 分布式能源接入直流配网的潮流优化[J]. 华北电力大学学报(自然科学版), 2016, 43(2):17-22, 29 LI Yonggang, HAN Bing, LIU Tianhao. Power flow optimization of distributed energy access DC distribution grid[J]. Journal of North China Electric Power University(Natural Science Edition), 2016, 43(2):17-22, 29
[17] 梁海峰, 林嘉麟, 李鹏. 含分布式能源直流配电网的优化调度[J]. 中国电力, 2016, 49(3):123-127, 159 LIANG Haifeng, LIN Jialin, LI Peng. Optimal dispatch of DC distribution network with distributed energy resources[J]. Electric Power, 2016, 49(3):123-127, 159
[18] MA J, GENG G, JIANG Q. Two-time-scale coordinated energy management for medium-voltage DC systems[J]. IEEE Transactions on Power Systems, 2016, 31(5):3971-3983.