Compatibility between Low Voltage Variable-Frequency Drives and Voltage Sags in Distribution Systems

被引：0
|
作者：
Xu Y. [1 ]
Li C. [1 ,2 ]
Wang K. [1 ]
Lu W. [1 ]
机构：
[1] State Key Laboratory of Alternate Electrical Power System With Renewable Energy Sources, North China Electric Power University, Beijing
[2] Chengdong Power Supply Center, State Grid Chengdu Electric Power Supply Company, Chengdu
来源：
Diangong Jishu Xuebao/Transactions of China Electrotechnical Society | 2019年 / 34卷 / 10期
关键词：
Compatibility; Experiment; Maximum entropy method; Tolerance curve; Variable frequency drive; Voltage sag;
D O I：
10.19595/j.cnki.1000-6753.tces.180195
中图分类号：
学科分类号：
摘要：
Firstly, the performance and mechanism of the variable-frequency drive (VFD) affected by voltage sags were deeply analyzed by theoretical analysis and experiments. Then, 7 representative brands of VFDs in domestic market with small and medium power (7.5kW & 18.5kW) were selected as the samples. The influence of various factors was tested on the sample VFDs. Further, the general tolerance curves of VFDs under the most severe sag type (three-phase sag) were obtained by comprehensive analysis of more than 13 000 groups of test data. Moreover, a method considering the compatibility probability of uncertain region was proposed. In this method, based on test data and measured sags, the probability distribution models were established using the modified maximum entropy method improved by logarithmic transformation, which include the models of fault probability of VFDs in uncertain region and amplitude and duration of sags in the distribution system. Then, the compatibility probability in uncertain area and total numbers for no trip were calculated. Finally, compared with other probabilistic fitting methods and traditional compatibility analysis methods, the validity and accuracy of the proposed method were verified. © 2019, Electrical Technology Press Co. Ltd. All right reserved.
引用
收藏
页码：2216 / 2229
页数：13
相关论文
共 19 条
  • [1] Zhou D., The analysis of frequency converter prevent low voltage ride through, Jiangsu Electrical Engineering, 34, 2, pp. 37-40, (2015)
  • [2] Weldemariam L.E., Gartner H.J., Cuk V., Et al., The performance of sensitive equipment to voltage dips from field measurements, Proceedings of the 201512th IEEE Africon International Conference-Green Innovation for African Renaissance, pp. 1-5, (2015)
  • [3] Shao W., Wang L., Wang J., Et al., Voltage sag immunity of coal feeder inverter in power plants, Electric Power Construction, 36, 3, pp. 88-93, (2015)
  • [4] Wu K., Lu C., Chen K., Et al., Research and development of testing system for low voltage frequency converter and its voltage support device, Zhejiang Electric Power, 35, 2, pp. 1-6, (2016)
  • [5] Li J., Wang L., Chen W., Research on voltage sag protection based on DC power supply technology, Journal of Power Supply, 13, 5, pp. 105-111, (2015)
  • [6] Bollen Math H.J., Understanding Power Quality Problems: Voltage Sags and Interruptions, (1999)
  • [7] Djokic S.Z., Stockman K., Milanovi J.V., Et al., Sensitivity of AC adjustable speed drives to voltage sags and short interruptions, IEEE Transactions on Power Delivery, 20, 1, pp. 494-505, (2005)
  • [8] Weldemariam L.E., Gartner H.J., Cuk V., Et al., Experimental investigation on the sensitivity of an industrial process to voltage dips, Proceedings of 2015 IEEE Eindhoven Power Tech, pp. 1-6, (2015)
  • [9] Working Group C4.110. Voltage dip immunity of equipment and installations, (2010)
  • [10] IEEE Std 1346-1998 IEEE recommended practice for evaluating electric power system compatibility with electronic process equipment, (1998)
12