Centralized Regulation and Optimization Strategy for MV Distribution Network with PV Integration

doi:10.11930/j.issn.1004-9649.202204109

Abstract

Abstract: With increasing PV connected to MV distribution network, the problem of node voltage fluctuation and network loss is becoming more and more serious. Taking the communication conditions and calculation capabilities of MV distribution networks into account, a centralized regulation optimization strategy for distributed PV connected to MV distribution network is proposed to realize the suppression of voltage fluctuation and excessive network loss. Firstly, the impacts of PV integration on node voltage and network loss are analyzed. Then, a multi-objective optimal control model is established, with the power flow balance equation, node voltage, branch current and system operation as constrains, and with the minimal network loss, minimal voltage fluctuation and maximum consumption of DGs as objective. In addition, the commercial CPLEX is used to solve the model. Finally, the effectiveness of the proposed model is verified through case simulation. The results show that the proposed model can effectively reduce the voltage fluctuation and network loss, reasonably allocate the output of DGs and ensure the utilization of PV in a reasonable range.

Key words: MV distribution network, photovoltaic integration, centralized control, voltage fluctuation, network loss

WANG Zezhou, ZHANG Mingming, QIAN Fengqiang, ZHOU Hongyi, YU Haomiao. Centralized Regulation and Optimization Strategy for MV Distribution Network with PV Integration[J]. Electric Power, 2023, 56(2): 15-22.

Add to citation manager EndNote|Ris|BibTeX

URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.202204109

https://www.electricpower.com.cn/EN/Y2023/V56/I2/15

References

[1] 董昱, 董存, 于若英, 等. 基于线性最优潮流的电力系统新能源承载能力分析[J]. 中国电力, 2022, 55(3): 1–8
DONG Yu, DONG Cun, YU Ruoying, et al. Renewable energy capacity assessment in power system based on linearized OPF[J]. Electric Power, 2022, 55(3): 1–8
[2] 李嘉彬, 杨建华, 张涛, 等. 电力电子设备谐波对配电网电压骤升的影响研究[J]. 智慧电力, 2021, 49(5): 35–41, 84
LI Jiabin, YANG Jianhua, ZHANG Tao, et al. Harmonic impact of power electronic devices upon voltage swell in distribution networks[J]. Smart Power, 2021, 49(5): 35–41, 84
[3] 张克勇, 王冠瑞, 耿新, 等. 含高比例光—储单元的主动配电网并网功率分布式协同控制策略[J]. 电力科学与技术学报, 2022, 37(2): 147–155
ZHANG Keyong, WANG Guanrui, GENG Xin, et al. Distributed cooperative control strategy for grid-connected power in ADN with high proportion of PV-ESS units[J]. Journal of Electric Power Science and Technology, 2022, 37(2): 147–155
[4] 颜湘武, 王晨光, 贾焦心, 等. 基于小交流信号的低压配电网中分布式光伏辅助调压控制策略[J]. 中国电力, 2022, 55(5): 134–142
YAN Xiangwu, WANG Chenguang, JIA Jiaoxin, et al. Distributed PV auxiliary voltage control strategy in low voltage distribution network based on small AC signals[J]. Electric Power, 2022, 55(5): 134–142
[5] 孙元章, 张鹏成, 柯德平, 等. 碳达峰条件下能源互联网系统规划设计与优化运行[J]. 南方电网技术, 2022, 16(1): 1–13
SUN Yuanzhang, ZHANG Pengcheng, KE Deping, et al. Planning, design and optimal operation of energy Internet system under the condition of peak carbon dioxide emissions[J]. Southern Power System Technology, 2022, 16(1): 1–13
[6] MAJUMDER R. Some aspects of stability in microgrids[J]. IEEE Transactions on Power Systems, 2013, 28(3): 3243–3252.
[7] 李讯. 浅析分布式电源并网的潮流计算[J]. 低碳世界, 2019, 9(10): 65–66
[8] 王开科, 熊小伏, 肖扬, 等. 基于负序电流的主动配电网单相断线故障保护方法[J]. 电力系统保护与控制, 2021, 49(6): 10–18
WANG Kaike, XIONG Xiaofu, XIAO Yang, et al. Single-phase break fault protection method for an active distribution network based on negative sequence current[J]. Power System Protection and Control, 2021, 49(6): 10–18
[9] 张忠林, 罗卫华, 高凯, 等. 分布式光伏并网对配电网的影响及解决措施[J]. 供用电, 2013, 30(4): 20–24
ZHANG Zhonglin, LUO Weihua, GAO Kai, et al. Impacts of the distributed photovoltaic connection on the distribution grid and corresponding solutions proposed[J]. Distribution & Utilization, 2013, 30(4): 20–24
[10] HARTONO B S, BUDIYANTO Y, SETIABUDY R. Review of microgrid technology[C]//2013 International Conference on QiR. Yogyakarta, Indonesia. IEEE, 2013: 127–132.
[11] 夏澍, 周明, 李庚银. 分布式电源选址定容的多目标优化算法[J]. 电网技术, 2011, 35(9): 115–121
XIA Shu, ZHOU Ming, LI Gengyin. Multi-objective optimization algorithm for distributed generation locating and sizing[J]. Power System Technology, 2011, 35(9): 115–121
[12] 李亮, 唐巍, 白牧可, 等. 考虑时序特性的多目标分布式电源选址定容规划[J]. 电力系统自动化, 2013, 37(3): 58–63,128
LI Liang, TANG Wei, BAI Muke, et al. Multi-objective locating and sizing of distributed generators based on time-sequence characteristics[J]. Automation of Electric Power Systems, 2013, 37(3): 58–63,128
[13] 张立梅, 唐巍, 赵云军, 等. 分布式发电接入配电网后对系统电压及损耗的影响分析[J]. 电力系统保护与控制, 2011, 39(5): 91–96,101
ZHANG Limei, TANG Wei, ZHAO Yunjun, et al. Analysis of DG influences on system voltage and losses in distribution network[J]. Power System Protection and Control, 2011, 39(5): 91–96,101
[14] 盛万兴, 吴鸣, 季宇, 等. 分布式可再生能源发电集群并网消纳关键技术及工程实践[J]. 中国电机工程学报, 2019, 39(8): 2175–2186
SHENG Wanxing, WU Ming, JI Yu, et al. Key techniques and engineering practice of distributed renewable generation clusters integration[J]. Proceedings of the CSEE, 2019, 39(8): 2175–2186
[15] 蔡永翔, 唐巍, 徐鸥洋, 等. 含高比例户用光伏的低压配电网电压控制研究综述[J]. 电网技术, 2018, 42(1): 220–229
CAI Yongxiang, TANG Wei, XU Ouyang, et al. Review of voltage control research in LV distribution network with high proportion of residential PVs[J]. Power System Technology, 2018, 42(1): 220–229
[16] SU X J, MASOUM M A S, WOLFS P J. Optimal PV inverter reactive power control and real power curtailment to improve performance of unbalanced four-wire LV distribution networks[J]. IEEE Transactions on Sustainable Energy, 2014, 5(3): 967–977.
[17] 李娜. 配电网无功电压实时优化集中控制策略探讨[J]. 中国高新区, 2018(7): 143
[18] 王枭, 何怡刚, 马恒瑞, 等. 考虑规模化储能的配电网电压分布式控制[J]. 电力自动化设备, 2022, 42(2): 25–30,55
WANG Xiao, HE Yigang, MA Hengrui, et al. Distributed voltage control of distribution network considering large-scale energy storage[J]. Electric Power Automation Equipment, 2022, 42(2): 25–30,55
[19] 张勇, 吴淳. 分布式发电机在配电网中的优化配置[J]. 电力系统保护与控制, 2010, 38(11): 33–37,43
ZHANG Yong, WU Chun. Optimal placement of DG unit in distribution system[J]. Power System Protection and Control, 2010, 38(11): 33–37,43
[20] 李云亮, 杨绍勇, 马涛, 等. 含分布式电源的配电网静态电压稳定性判别方法的研究[J]. 电测与仪表, 2014(10): 45–50
LI Yunliang, YANG Shaoyong, MA Tao, et al. Research on the static voltage stability discrimination method of distribution network containing distributed generation[J]. Electrical Measurement & Instrumentation, 2014(10): 45–50
[21] 程杉, 王贤宁, 冯毅煁, 等. 基于CPLEX与MATLAB的电动汽车充电站优化调度仿真系统[J]. 电网与清洁能源, 2018, 34(1): 123–127,136
CHENG Shan, WANG Xianning, FENG Yichen, et al. Optimal simulation system of electric vehicle charging station based on CPLEX and MATLAB[J]. Power System and Clean Energy, 2018, 34(1): 123–127,136
[22] 陈志杰, 李凤婷, 赵新利, 等. 考虑源荷特性的双层互动优化调度[J]. 电力系统保护与控制, 2020, 48(1): 135–141
CHEN Zhijie, LI Fengting, ZHAO Xinli, et al. A bi-level interactive optimization scheduling considering source-load characteristics[J]. Power System Protection and Control, 2020, 48(1): 135–141
[23] 刘科研, 盛万兴, 何开元, 等. 基于拉格朗日松弛技术的复杂有源配电网分布式状态估计[J]. 电力系统保护与控制, 2017, 45(15): 125–132
LIU Keyan, SHENG Wanxing, HE Kaiyuan, et al. Distributed state estimation of complex active distribution network based on Lagrange relaxation technique[J]. Power System Protection and Control, 2017, 45(15): 125–132
[24] TIAN Z, WU W C, ZHANG B M, et al. Mixed-integer second-order cone programing model for VAR optimisation and network reconfiguration in active distribution networks[J]. IET Generation, Transmission & Distribution, 2016, 10(8): 1938–1946.
[25] 车仁飞, 李仁俊. 一种少环配电网三相潮流计算新方法[J]. 中国电机工程学报, 2003, 23(1): 74–79
CHE Renfei, LI Renjun. A new three-phase power flow method for weakly meshed distribution systems[J]. Proceedings of the CSEE, 2003, 23(1): 74–79