Abstract:With the development of new energy technology, more and more isolated power systems located in remote mountainous areas start to use both new energy generators and diesel generators as power supply. These power systems have the functional requirements for new energy inverters supplying power independently and diesel generators in parallel power supply. When supplying power independently, the new energy inverters run in voltage source control mode, while they run in current source control mode in parallel operation with diesel generators. Based on these features of the system, this paper proposes a control strategy combining inverter mode-switching and quasi-synchronization in parallel operation with diesel generators. The strategy solves the problem in the control of inverters and diesel generators parallel operation. It is verified through electromagnetic transient time-domain simulation and physical experiment on 1∶1 prototype.
张雪妍, 马伟明, 付立军, 马凡. 基于模式切换的逆变器与发电机并联控制策略[J]. 电工技术学报, 2017, 32(18): 220-229.
Zhang Xueyan, Ma Weiming, Fu Lijun, Ma Fan. Parallel Control Strategy of Inverter and Diesel Generator Based on Mode-Switching Method. Transactions of China Electrotechnical Society, 2017, 32(18): 220-229.
[1] 陈丽丽, 牟龙华, 刘仲. 光储柴微电网运行特性分析[J]. 电力系统保护与控制, 2015, 43(12): 86-91. Chen Lili, Mu Longhua, Liu Zhong. Analysis of the operating characteristics of a PV-diesel-BESS micro- grid system[J]. Power System Protection and Control, 2015, 43(12): 86-91. [2] 蒋泽甫, 谢开贵. 基于时序负荷的独立电网风/柴/储电源系统容量优化[J]. 电力系统保护与控制, 2012, 40(20): 119-124. Jiang Zefu, Xie Kaigui. Capacity optimization of power supply system for the isolated grid containing WT/DU/ESS based on chronological loads[J]. Power System Protection and Control, 2012, 40(20): 119- 124. [3] 王坤林, 游亚戈, 张亚群. 海岛可再生独立能源电站能量管理系统[J]. 电力系统自动化, 2010, 34(14): 13-17. Wang Kunlin, You Yage, Zhang Yaqun. Energy management system of renewable stand-alone energy power generation system in an island[J]. Automation of Electric Power Systems, 2010, 34(14): 13-17. [4] Baños R, Manzano-Agugliaro F, Montoya F G, et al. Optimization methods applied to renewable and sustainable energy: a review[J]. Renewable & Sustai- nable Energy Reviews, 2011, 15(4): 1753-1766. [5] 杨新法, 苏剑, 吕志鹏, 等. 微电网技术综述[J]. 中国电机工程学报, 2014, 34(1): 57-70. Yang Xinfa, Su Jian, Lü Zhipeng, et al. Overview on micro-grid technology[J]. Proceedings of the CSEE, 2014, 34(1): 57-70. [6] Luna-Rubio R, Trejo-Perea M, Vargas-Vázquez D, et al. Optimal sizing of renewable hybrids energy systems: a review of methodologies[J]. Solar Energy, 2012, 86(4): 1077-1088. [7] 张庆海, 彭楚武, 陈燕东, 等. 一种微电网多逆变器并联运行控制策略[J]. 中国电机工程学报, 2012, 32(25): 126-132. Zhang Qinghai, Peng Chuwu, Chen Yandong, et al. A control strategy for parallel operation of multi- inverters in microgrid[J]. Proceedings of the CSEE, 2012, 32(25): 126-132. [8] Tan K T, Peng X Y, So P L, et al. Centralized control for parallel operation of distributed generation inverters in microgrids[J]. IEEE Transactions on Smart Grid, 2012, 3(4): 1977-1987. [9] 张建文, 王鹏, 王晗, 等. 多逆变器并联的均流控制策略[J]. 电工技术学报, 2015, 30(18): 61-68. Zhang Jianwen, Wang Peng, Wang Han, et al. Average-current control strategy of multiple parallel inverters[J]. Transactions of China Electrotechnical Society, 2015, 30(18): 61-68. [10] 姚骏, 杜红彪, 周特, 等. 微网逆变器并联运行的改进下垂控制策略[J]. 电网技术, 2015, 39(4): 932-938. Yao Jun, Du Hongbiao, Zhou Te, et al. Improved droop control strategy for inverters parallel operation in micro-grid[J]. Power System Technology, 2015, 39(4): 932-938. [11] 徐玉琴, 马焕均. 基于改进下垂控制的逆变器并联运行技术[J]. 电力系统保护与控制, 2015, 43(7): 103-107. Xu Yuqin, Ma Huanjun. Parallel operation technology of inverters based on improved droop control[J]. Power System Protection and Control, 2015, 43(7): 103-107. [12] 王逸超, 罗安, 金国彬. 微网逆变器的改进鲁棒下垂多环控制[J]. 电工技术学报, 2015, 30(22): 116- 123. Wang Yichao, Luo An, Jin Guobin. Improved robust droop multiple loop control for parallel inverters in microgrid[J]. Transactions of China Electrotechnical Society, 2015, 30(22): 116-123. [13] 李浩然, 杨旭红, 冯成臣. 多逆变器并联下的输出阻抗分析和改进下垂控制策略研究[J]. 电力系统保护与控制, 2015, 43(20): 29-35. Li Haoran, Yang Xuhong, Feng Chengchen. Control strategy research of output impedance analysis and improved droop control based on multiple-inverters parallel[J]. Power System Protection and Control, 2015, 43(20): 29-35. [14] Alaa Mohd, Egon Ortjohann, Danny Morton, et al. Review of control techniques for inverters parallel operation[J]. Electric Power Systems Research, 2010, 80(12): 1477-1487. [15] 李依璘, 王明渝, 梁慧慧, 等. 基于分布式控制的不同容量逆变器并联技术研究[J]. 电力系统保护与控制, 2014, 42(6): 123-128. Li Yilin, Wang Mingyu, Liang Huihui, et al. Study on distribution controlled inverter parallel system with different power ratings[J]. Power System Protection and Control, 2014, 42(6): 123-128. [16] Lazzarin T B, Bauer G A T, Barbi I. A control strategy for parallel operation of single-phase voltage source inverters: analysis, design and experimental results[J]. IEEE Transactions on Industrial Elec- tronics, 2013, 60(6): 2194-2204. [17] 陈汝昌, 陈飞, 张帆, 等. 新能源电网中微电源并网控制策略研究[J]. 电力系统保护与控制, 2015, 43(12): 55-60. Chen Ruchang, Chen Fei, Zhang Fan, et al. Control strategies for grid-connected microsource in new energy power systems[J]. Power System Protection and Control, 2015, 43(12): 55-60. [18] 曾正, 赵荣祥, 汤胜清, 等. 可再生能源分散接入用先进并网逆变器研究综述[J]. 中国电机工程学报, 2013, 33(24): 1-12, 21. Zeng Zheng, Zhao Rongxiang, Tang Shengqing, et al. An overview on advanced grid-connected inverters used for decentralized renewable energy resources[J]. Proceedings of the CSEE, 2013, 33(24): 1-12, 21. [19] Lin O U, Wang Y H, Li X Y, et al. Study on feed forward control of the grid side converter in direct drive wind power[J]. Electric Drive, 2014, 44(2): 31-35. [20] 阳同光, 桂卫华. 电网不平衡情况下并网逆变器控制策略综述[J]. 电工技术学报, 2015, 30(14): 241-246. Yang Tongguang, Gui Weihua. An overview on control strategies of grid-connected inverter under unbalanced voltage conditions[J]. Transactions of China Electrotechnical Society, 2015, 30(14): 241-246. [21] 胡书举, 龚文明, 李丰林, 等. 一种并网逆变器无交流电压传感器控制策略研究[J]. 电工技术学报, 2015, 30(14): 325-332. Hu Shuju, Gong Wenming, Li Fenglin, et al. Research on a kind of AC voltage sensorless control strategy of grid-connected inverter[J]. Transactions of China Electrotechnical Society, 2015, 30(14): 325- 332. [22] 郭力, 富晓鹏, 李霞林, 等. 独立交流微网中电池储能与柴油发电机的协调控制[J]. 中国电机工程学报, 2012, 32(25): 70-78. Guo Li, Fu Xiaopeng, Li Xialin, et al. Coordinated control of battery storage and diesel generators in isolated AC microgrid systems[J]. Proceedings of the CSEE, 2012, 32(25): 70-78. [23] 邓玉辉. 主动配电网中分布式电源的虚拟同步发电机控制技术研究[D]. 北京: 华北电力大学, 2015.