RESEARCH ON MULTI-TIME SCALE VOLTAGE REACTIVE POWER OPTIMIZATION CONTROL METHOD BASED ON FLEXIBLE ON-LOAD VOLTAGE REGULATING TRANSFORMER

Lyu Changzhi; Wang Song; Yin Jingyuan; Huo Qunhai; Li Jiaming; Han Libo

doi:10.19912/j.0254-0096.tynxb.2024-0924

PDF(2939 KB)

Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (10) : 379-389. DOI: 10.19912/j.0254-0096.tynxb.2024-0924

RESEARCH ON MULTI-TIME SCALE VOLTAGE REACTIVE POWER OPTIMIZATION CONTROL METHOD BASED ON FLEXIBLE ON-LOAD VOLTAGE REGULATING TRANSFORMER

Lyu Changzhi¹, Wang Song^1,2, Yin Jingyuan^2,3, Huo Qunhai^2,3, Li Jiaming^2,3, Han Libo^2,3

Author information +

History +

Abstract

In order to solve the problem of voltage fluctuation caused by high proportion of new energy connected to the power grid, the paper introduces a flexible on-load voltage regulating transformer（FOVRT） topology. Through FOVRT, the coordination of voltage regulation and reactive power can realize the efficient utilization of reactive power regulation equipment in the power grid. Firstly, the working principle and mathematical model of FOVRT are analyzed, and then a multi-time scale voltage reactive power dynamic optimization model with FOVRT is proposed. According to the forecast data of distributed power supply and load, the optimal adjustment scheme of discrete compensation equipment in different time periods is obtained. Combined with FOVRT continuous stepless voltage regulation capability, minute level reactive power optimization is carried out considering distributed power supply and FOVRT reactive power output in intra-day stage to achieve the optimal network loss and node voltage deviation. Finally, the improved IEEE 33-node distribution network is simulated, and the simulation results verify the validity and rationality of the proposed model and method.

Key words

distributed generations / power distribution network / reactive power optimization / multiple time scale / transformer

Cite this article

EndNote

Ris (Procite)

Bibtex

Download Citations

Lyu Changzhi, Wang Song, Yin Jingyuan, Huo Qunhai, Li Jiaming, Han Libo. RESEARCH ON MULTI-TIME SCALE VOLTAGE REACTIVE POWER OPTIMIZATION CONTROL METHOD BASED ON FLEXIBLE ON-LOAD VOLTAGE REGULATING TRANSFORMER[J]. Acta Energiae Solaris Sinica. 2025, 46(10): 379-389 https://doi.org/10.19912/j.0254-0096.tynxb.2024-0924

References

[1] 马钊, 张恒旭, 赵浩然, 等. 双碳目标下配用电系统的新使命和新挑战[J]. 中国电机工程学报, 2022, 42(19): 6931-6945.
MA Z, ZHANG H X, ZHAO H R, et al.New mission and challenge of power distribution and consumption system under dual-carbon target[J]. Proceedings of the CSEE, 2022, 42(19): 6931-6945.
[2] 陈倩, 王维庆, 王海云, 等. 含分布式电源的配电网动态无功补偿优化策略研究[J]. 太阳能学报, 2023, 44(1): 525-535.
CHEN Q, WANG W Q, WANG H Y, et al.Research on dynamic reactive power compensation optimization strategy of distribution network with distributed generation[J]. Acta energiae solaris sinica, 2023, 44(1): 525-535.
[3] CHEN S, WANG C F, ZHANG Z W.Multitime scale active and reactive power coordinated optimal dispatch in active distribution network considering multiple correlation of renewable energy sources[J]. IEEE transactions on industry applications, 2021, 57(6): 5614-5625.
[4] ZHOU J B, WANG B, WU J L, et al.Research on multi-objective optimal dispatching and low voltage of distributed generation in rural distribution network[C]//2021 IEEE 4th Advanced Information Management, Communicates, Electronic and Automation Control Conference (IMCEC). Chongqing, China, 2021: 1131-1136.
[5] LI X M, LI H W, LI S B, et al.Review on reactive power and voltage optimization of active distribution network with renewable distributed generation and time-varying loads[J]. Mathematical problems in engineering, 2021, 2021(1): 1196369.
[6] 孙文辉, 潘明, 徐梦潇, 等. 光伏接入条件下影响OLTC“负调压效应” 临界点因素的研究[J]. 变压器, 2024, 61(1): 40-46.
SUN W H, PAN M, XU M X, et al.Research on critical point factors of OLTC negative voltage regulation effect under photovoltaic access condition[J]. Transformer, 2024, 61(1): 40-46.
[7] XIONG C Y, LIU H M, YANG Z H, et al.Optimal reactive power dispatch of distribution network considering voltage security[C]//2022 IEEE Symposium Series on Computational Intelligence (SSCI). Singapore, 2022: 1362-1367.
[8] 万晓东, 马平, 万东红. 基于DG无功参与的配电网综合无功优化[J]. 电气工程学报, 2023, 18(3): 260-267.
WAN X D, MA P, WAN D H.Comprehensive reactive power optimization of distribution network based on DG reactive power participation[J]. Journal of electrical engineering, 2023, 18(3): 260-267.
[9] 田宇, 黄婧, 谢枭, 等. 主动配电网无功补偿和OLTC鲁棒多目标优化配置[J]. 中国电力, 2023, 56(3): 94-99.
TIAN Y, HUANG J, XIE X, et al.Multi-objective optimal allocation of reactive compensation and OLTC in active distribution network[J]. Electric power, 2023, 56(3): 94-99.
[10] JIN D, CHIANG H D, LI P.Two-timescale multi-objective coordinated volt/var optimization for active distribution networks[J]. IEEE transactions on power systems, 2019, 34(6): 4418-4428.
[11] 李鹏, 姜磊, 王加浩, 等. 基于深度强化学习的新能源配电网双时间尺度无功电压优化[J]. 中国电机工程学报, 2023, 43(16): 6255-6266.
LI P, JIANG L, WANG J H, et al.Optimization of dual-time scale reactive voltage for distribution network with renewable energy based on deep reinforcement learning[J]. Proceedings of the CSEE, 2023, 43(16): 6255-6266.
[12] 李子欣, 高范强, 赵聪, 等. 电力电子变压器技术研究综述[J]. 中国电机工程学报, 2018, 38(5): 1274-1289.
LI Z X, GAO F Q, ZHAO C, et al.Research review of power electronic transformer technologies[J]. Proceedings of the CSEE, 2018, 38(5): 1274-1289.
[13] 杨斌. 多功能混合型电力电子变压器关键技术研究[D]. 南京: 东南大学, 2019.
YANG B.Research on the key techniques of multifunctional hybrid power electronic transformer[D]. Nanjing: Southeast University, 2019.
[14] 王艺博, 蔡国伟, 刘闯, 等. 基于直接式AC/AC变换的单相混合式配电变压器及其松弛二端口网络建模[J]. 电网技术, 2020, 44(8): 3029-3038.
WANG Y B, CAI G W, LIU C, et al.Direct AC/AC conversion based single-phase hybrid distribution transformer and its relaxed two-port network modeling[J]. Power system technology, 2020, 44(8): 3029-3038.
[15] 张祥龙, 周晖, 肖智宏, 等. 电力电子变压器在有源配电网无功优化中的应用[J]. 电力系统保护与控制, 2017, 45(4): 80-85.
ZHANG X L, ZHOU H, XIAO Z H, et al.Power electronic transformer applied to optimization of reactive power in active distribution system[J]. Power system protection and control, 2017, 45(4): 80-85.
[16] 王艺博, 张瀚文, 蔡国伟, 等. 直接式AC/AC型混合配电变压器及其在配电环网潮流柔性调控中的应用[J]. 电力自动化设备, 2021, 41(1): 55-64.
WANG Y B, ZHANG H W, CAI G W, et al.Direct AC/AC based hybrid distribution transformer and its application in power flow flexible regulation of distribution loop network[J]. Electric power automation equipment, 2021, 41(1): 55-64.
[17] LI J M, HUO Q H, YIN J Y, et al.Study on coordinated voltage regulation strategy of flexible on-load tap changer and distributed generator[J]. Energy reports, 2022, 8: 601-609.
[18] 孙胜博, 饶尧, 郭威, 等. 基于改进ADMM的含分布式光伏的配电网电压无功优化方法[J]. 太阳能学报, 2024, 45(3): 506-516.
SUN S B, RAO Y, GUO W, et al.Volt/var optimization method of distribution network with distributed photovoltaic based on improved ADMM[J]. Acta energiae solaris sinica, 2024, 45(3): 506-516.
[19] 卢姬, 常俊晓, 张云阁, 等. 考虑DG不确定性的主动配电网两阶段无功机会约束优化方法[J]. 电力系统保护与控制, 2021, 49(21): 28-35.
LU J, CHANG J X, ZHANG Y G, et al.Two-stage reactive power chance-constrained optimization method for an active distribution network considering DG uncertainties[J]. Power system protection and control, 2021, 49(21): 28-35.
[20] 茹秋实, 米雪峰, 宋志刚, 等. 考虑储能-智能软开关的主动配电网混合时间尺度鲁棒优化[J]. 中国电力, 2022, 55(9): 129-139.
RU Q S, MI X F, SONG Z G, et al.Hybrid-timescale robust optimization in active distribution network with energy storage system-soft open point[J]. Electric power, 2022, 55(9): 129-139.
[21] 马永翔, 张勋, 淡文国, 等. 基于混合策略改进粒子群算法的配电网无功优化研究[J]. 电力电容器与无功补偿, 2023, 44(6): 32-38, 78.
MA Y X, ZHANG X, DAN W G, et al.Study on reactive power optimization of distribution network based on multi-strategy fusion improved particle swarm algorithm[J]. Power capacitor & reactive power compensation, 2023, 44(6): 32-38, 78.
[22] 孟晓丽, 高君, 盛万兴, 等. 含分布式电源的配电网日前两阶段优化调度模型[J]. 电网技术, 2015, 39(5): 1294-1300.
MENG X L, GAO J, SHENG W X, et al.A day-ahead two-stage optimal scheduling model for distribution network containing distributed generations[J]. Power system technology, 2015, 39(5): 1294-1300.