Evaluation of the Operating Status of Voltage Sensitive Equipment Considering the Protective Action Mechanism of Low Voltage Release under the Random Influence of Voltage Sag
Wang Xue1, Tang Zhengcong1,2, Liu Xingjie3
1. Department of Electric Engineering North China Electric Power University Baoding 071000 China; 2. State Grid Yancheng Power Supply Company Yancheng 224000 China; 3. School of Physics and Electronic-Electrical Engineering Ningxia University Yinchuan 750000 China
Abstract：Considering the influence of the randomness of the voltage sag at the system side and the action characteristics of the low voltage release at the load side on the equipment, a method for evaluating the operating status of voltage-sensitive equipment is proposed. Based on the tolerance of low voltage release and sensitive equipment, two operating states of sensitive equipment are defined which are effective operating state and safe shut-off state. Aiming at the uncertainty of equipment tolerance in fuzzy regions, a reliability analysis method based on evidence theory is introduced. Discretization methods are used to characterize the evidence structure of discrete and continuous random variables, and the discrete sub-intervals of the variables are used as evidence bodies to construct their basic probability distribution. The proposed method was applied to the state assessment of sensitive equipment, and compared with the Latin hypercube sampling simulation, the effectiveness of the method was verified. The influences of different characteristic voltage sag distribution and low voltage release action characteristics on the operating state of sensitive equipment were further explored. The research conclusion can provide guidance for low voltage release configuration and sag management.
王雪, 唐正聪, 刘兴杰. 电压暂降随机影响下考虑低压脱扣器保护动作机制的电压敏感设备运行状态评估[J]. 电工技术学报, 2022, 37(15): 3794-3804.
Wang Xue, Tang Zhengcong, Liu Xingjie. Evaluation of the Operating Status of Voltage Sensitive Equipment Considering the Protective Action Mechanism of Low Voltage Release under the Random Influence of Voltage Sag. Transactions of China Electrotechnical Society, 2022, 37(15): 3794-3804.
[1] Khadkikar V, Xu Dianguo, Cecati C.Emerging power quality problems and state-of-the-art solutions[J]. IEEE Transactions on Industrial Electronics, 2017, 64(1): 761-763. [2] Masoum M A S, Fuchs E. Power quality in power systems and electrical machines[M]. 2nd ed. Amsterdam: Academic Press/Elsevier, 2015 [3] Electric Power Research Institute. Ride-through perform-ance of programmable logic controllers[EB/OL].https://www.epri.com/research/products/000000000001017067. [4] Medora N K, Kusko A, Thompson M.Impact of line voltage sag on switch mode power supply operation[C]//2008 3rd IEEE Conference on Industrial Electronics and Applications, Singapore, 2008: 2178-2183. [5] 莫文雄, 吴亚盆, 许中, 等. 典型PLC电压暂降耐受性能实验研究[J]. 华北电力大学学报(自然科学版), 2018, 45(3): 53-59, 66. Mo Wenxiong, Wu Yapen, Xu Zhong, et al.Research on tolerance characteristics of typical PLC to voltage sags[J]. Journal of North China Electric Power University (Natural Science Edition), 2018, 45(3): 53-59, 66. [6] Djokic S Z, Desmet J, Vanalme G, et al.Sensitivity of personal computers to voltage sags and short interruptions[J]. IEEE Transactions on Power Delivery, 2005, 20(1): 375-383. [7] 刘书铭, 吴亚盆, 张博, 等. PC机电压暂降敏感度试验研究[J]. 电测与仪表, 2019, 56(11): 32-36, 48. Liu Shuming, Wu Yapen, Zhang Bo, et al.Experimental research on sensitivity of PC to voltage sags[J]. Electrical Measurement & Instrumentation, 2019, 56(11): 32-36, 48. [8] Ismail N A, Kasim L M, Mokhtar N F, et al.Digital analysis and development of ride-through capability of AC contactor with respect to voltage sag characteristics[C]//2010 The 2nd International Conference on Computer and Automation Engineering (ICCAE), Singapore. 2010: 177-181. [9] Kanokbannakorn W, Saengsuwan T, Sirisukprasert S.The modeling of AC magnetic contactor for immunity studies and voltage sag assessment[C]//The 8th Electrical Engineering/ Electronics, Computer, Telecommunications and Information Technology (ECTI) Association of Thailand-Conference, Khon Kaen, Thailand, 2011: 621-624. [10] 徐永海, 兰巧倩, 洪旺松. 交流接触器对电压暂降敏感度的试验研究[J]. 电工技术学报, 2015, 30(21): 136-146. Xu Yonghai, Lan Qiaoqian, Hong Wangsong.Experimental research on AC contactor sensitivity during voltage sags[J]. Transactions of China Electrotechnical Society, 2015, 30(21): 136-146. [11] 陶顺, 唐松浩, 陈聪, 等. 变频调速器电压暂降耐受特性试验及量化方法研究Ⅰ: 机理分析与试验方法[J]. 电工技术学报, 2019, 34(6): 1273-1281. Tao Shun, Tang Songhao, Chen Cong, et al.Experimental research on adjustable speed drivers tolerance to voltage sags and quantitative method part Ⅰ: mechanism analysis and test method[J]. Transactions of China Electrotechnical Society, 2019, 34(6): 1273-1281. [12] Djokic S Z, Stockman K, Milanovic J V, et al.Sensitivity of AC adjustable speed drives to voltage sags and short interruptions[J]. IEEE Transactions on Power Delivery, 2005, 20(1): 494-505. [13] 孔祥雨, 徐永海, 陶顺. 基于一种电压暂降新型描述的敏感设备免疫能力评估[J]. 电工技术学报, 2015, 30(3): 165-171. Kong Xiangyu, Xu Yonghai, Tao Shun.Sensitive equipment immunity assessment based on a new voltage sag description[J]. Transactions of China Electrotechnical Society, 2015, 30(3): 165-171. [14] 叶曦, 刘开培, 李志伟. 不确定条件下计及线路保护动作特性的电压暂降频次评估[J]. 电力自动化设备, 2018, 38(3): 169-176. Ye Xi, Liu Kaipei, Li Zhiwei.Voltage sag frequency assessment considering action characteristics of line protection in uncertain conditions[J]. Electric Power Automation Equipment, 2018, 38(3): 169-176. [15] Luo Longfu, Chen Wang, Tian Ye, et al.Compensation strategy for multiple series centralized voltage sag in medium voltage distribution network[C]// 2019 IEEE PES Asia-Pacific Power and Energy Engineering Conference, Macao, China, 2019: 1-6. [16] Hamoud F, Doumbia M L, Chériti A.Voltage sag and swell mitigation using D-STATCOM in renewable energy based distributed generation systems[C]//2017 Twelfth International Conference on Ecological Vehicles and Renewable Energies (EVER), Monte Carlo, Monaco, 2017: 1-6. [17] 唐松浩, 陶顺, 刘颖英, 等. 变频调速器电压暂降耐受特性试验及量化方法研究Ⅱ: 试验及量化方法[J]. 电工技术学报, 2019, 34(10): 2207-2215. Tang Songhao, Tao Shun, Liu Yingying, et al.Experimental research on adjustable speed drivers tolerance to voltage sags and quantitative method part Ⅱ: experiment and quantification method[J]. Transactions of China Electrotechnical Society, 2019, 34(10): 2207-2215. [18] 贾清泉, 艾丽, 董海艳, 等. 考虑不确定性的电压暂降不兼容度和影响度评价指标及方法[J]. 电工技术学报, 2017, 32(1): 48-57. Jia Qingquan, Ai Li, Dong Haiyan, et al.Uncertainty description and assessment of incompatibility & influence index for voltage sags[J]. Transactions of China Electrotechnical Society, 2017, 32(1): 48-57. [19] 刘勃江, 李华强, 肖先勇, 等. 敏感设备电压暂降故障水平的风险评估[J]. 电力系统及其自动化学报, 2016, 28(3): 87-92. Liu Bojiang, Li Huaqiang, Xiao Xianyong, et al.Risk assessment for failure level of sensitive equipment caused by voltage sag[J]. Proceedings of the CSU-EPSA, 2016, 28(3): 87-92. [20] 杨家莉, 徐永海. 基于组合赋权与TOPSIS模型的节点电压暂降严重程度综合评估方法[J]. 电力系统保护与控制, 2017, 45(18): 88-95. Yang Jiali, Xu Yonghai.Comprehensive evaluation method of node voltage sag severity based on TOPSIS model and combination weights[J]. Power System Protection and Control, 2017, 45(18): 88-95. [21] Wang Ying, Li Shunyi, Xiao Xianyong.Estimation method of voltage sag frequency considering transformer energization[J]. IEEE Transactions on Power Delivery, 2021, 36(6): 3404-3413. [22] Luo Jinqing, Shi Libao, Ni Yixin.Uncertain power flow analysis based on evidence theory and affine arithmetic[J]. IEEE Transactions on Power Systems, 2018, 33(1): 1113-1115.
2022, Vol. 37 
