基于改进单相dq0电压检测的混合式配电变压器负载电压控制投切策略

doi:10.19595/j.cnki.1000-6753.tces.L90165

Abstract
Figure/Table
References
Related Citation (5)

Download: PDF (1269 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract The load voltage compensation unit of hybrid distribution transformer (HDT) should be switched on or off with the variable conditions of the distribution network. To improve the limitations of the existing voltage detection methods, this paper proposes an novel detection method with improved dq0 transformation method. Specifically, the three-phase virtual voltages for each phase grid voltage are built by the method of derivation, and these virtual voltages are transformed from the static coordinate to the dq0 coordinate, then the three phase voltage swell, sag and asymmetry can be detected by the simple comparing method. The advantage of this novel detection method is that just a low pass filter with small time constant is adopted to eliminate the high order harmonics, then the low pass filter with long delay used in the traditional methods can be cancelled, thus both the detection response and accuracy of the novel method are improved. The simulation model is built in Matlab/ Simulink, the load voltage compensation unit can be switched on or off by the generated detection signal with reverse parallel thyristors, which verifies the correctness of the proposed method.

Key words： Hybrid distribution transformer voltage detection derivative construction method load voltage control unit switching strategy

Received: 30 June 2020

PACS:

TM421

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	Cai Shengliang
	Liang Deliang
	Zhou Kun
	Zhang Lishi
	Liu Yibin

Cite this article:

Cai Shengliang,Liang Deliang,Zhou Kun等. Switching Strategy with the Improved Single-Phase dq0 Voltage Detection Method for the Load Voltage Compensation Unit of Hybrid Distribution Transformer[J]. Transactions of China Electrotechnical Society, 2021, 36(zk1): 126-132.

URL:

https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.L90165 OR https://dgjsxb.ces-transaction.com/EN/Y2021/V36/Izk1/126

[1] 王金丽, 李金元, 徐腊元. 大功率电力电子开关用于配电变压器无弧有载调压方案[J]. 电力系统自动化, 2006, 30(15): 97-102.
Wang Jinli, Li Jinyuan, Xu Layuan.Scheme of arcless onload voltage regulation for distribution transformer using high power electronic switch[J]. Automation of Electric Power Systems, 2006, 30(15): 97-102.
[2] 王金丽, 盛万兴, 杨红磊, 等. 非晶合金配电变压器的技术性能分析[J]. 电网技术, 2010, 34(10): 32-37.
Wang Jinli, Sheng Wanxing, Yang Honglei, et al.Analysis on technical performance of amorphous core distribution transformer[J]. Power System Techno- logy, 2010, 34(10): 32-37.
[3] 王金丽, 盛万兴, 方恒福, 等. 自适应负荷型配电变压器设计[J]. 电力系统自动化, 2014, 38(18): 86-92.
Wang Jinli, Sheng Wanxing, Fang Hengfu, et al.Design of a self-adaptive distribution transformer[J]. Auto- mation of Electric Power Systems, 2014, 38(18): 86-92.
[4] 梁得亮, 柳轶彬, 寇鹏, 等. 智能配电变压器发展趋势分析[J]. 电力系统自动化, 2020, 44(7): 1-14.
Liang Deliang, Liu Yibin, Kou Peng, et al.Analysis of development trend for intelligent distribution transformer[J]. Automation of Electric Power Systems, 2020, 44(7): 1-14.
[5] Burkard J, Biela J.Evaluation of topologies and optimal design of a hybrid distribution transformer[C]// 2015 17th European Conference on Power Elec- tronics and Applications (EPE'15 ECCE-Europe), Geneva, Switzerland, 2015: 1-10.
[6] Bala S, Das D, Aeloiza E, et al.Hybrid distribution transformer: concept development and field demon- stration[C]//2012 IEEE Energy Conversion Congress and Exposition (ECCE), Raleigh, NC, USA, 2012: 4061-4068.
[7] Zhang Hui, Sun Chuanda, Li Zhixin, et al.Voltage vector error fault diagnosis for open-circuit faults of three-phase four-wire active power filters[J]. IEEE Transactions on Power Electronics, 2019, 32(3): 2215-2226.
[8] Javadi A, Hamadi A, Woodward L, et al.Experi- mental investigation on a hybrid series active power compensator to improve power quality of typical households[J]. IEEE Transactions on Industrial Electronics, 2016, 63(8): 4849-4859.
[9] Fitzer C, Barnes M, Green P.Voltage sag detection technique for a dynamic voltage restorer[J]. IEEE Transactions on Industry Applications, 2004, 40(1): 203-212.
[10] 张晓滨, 黄佳敏, 伍文俊, 等. 基于虚拟同步坐标变换的交流微电网并网逆变器电压相位和电流检测算法[J]. 电工技术学报, 2018, 33(13): 3119-3129.
Zhang Xiaobin, Huang Jiamin, Wu Wenjun, et al.A voltage phase and current detection algorithm based on virtual synchronization frame for ac microgrid grid-connected inverters[J]. Transactions of China Electrotechnical Society, 2018, 33(13): 3119-3129.
[11] Jung H J, Suh I Y, Kim B S, et al.A study on DVR control for unbalanced voltage compensation[C]// Seventeenth Annual IEEE Applied Power Electronics Conference and Exposition, Dallas, TX, USA, 2002, 2: 1068-1073.
[12] Mokhtari H, Dewan S B, Travani M R.Performance evaluation of thyristor based static transfer switch[J]. IEEE Transactions on Power Delivery, 2000, 15(3): 960-966.
[13] 博峰, 鲁军勇, 张晓, 等. 大容量脉冲电容器放电起始阶段晶闸管电压高频振荡机理研究[J]. 电工技术学报, 2020, 35(6): 1272-1278.
Zhu Bofeng, Lu Junyong, Zhang Xiao, et al.Study on the high frequency voltage oscillation of thyristor during the initial stage of pulse capacitor discharge[J]. Transactions of China Electrotechnical Society, 2020, 35(6): 1272-1278.
[14] 邓二平, 应晓亮, 张传云, 等. 新型通用混合型直流断路器用IGBT测试平台及测试分析[J]. 电工技术学报, 2020, 35(2): 300-309.
Deng Erping, Ying Xiaoliang, Zhang Chuanyun, et al.Novel general-purpose IGBT test platform for hybrid DC circuit breakers and analysis[J]. Transactions of China Electrotechnical Society, 2020, 35(2): 300-309.
[15] Singh B, Chandra A, Al-Haddad K, Power quality: problems and mitigation techniques[J]. IEEE Indu- strial Electronics Magazine, 2015, 9(2): 62.
[16] Mahela O, Shaik A G, Gupta N.A critical review of detection and classification of power quality events[C]//Renewable & Sustainable Energy Reviews, Jodhpur, India, 2015, 41: 495-505.
[17] 肖湘宁, 徐永海. 电能质量问题剖析[J]. 电网技术, 2001, 25(3): 66-69.
Xiao Xiangning, Xu Yonghai.Power quality analysis and its development[J]. Power System Technology, 2001, 25(3): 66-69.