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GUO Jiajun，XU Zhi，ZHAI Baoyu，CHEN Yutian，CHEN Junru
Abstract：Aiming at the low voltage ride through（LVRT）problem of the combined grid-connected systemwith new energy-energy storage under the control of the grid-forming converter，an additional voltage limitercontrol scheme based on the traditional LVRT was proposed. Firstly，the shortcomings of the traditional LVRTstra...
更多Number of views：1813 Amount of downloads：4793
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ZOU Yingdong，WANG Fengjun，ZHOU Yu
Abstract：This research focused on the separation and calculation of electromagnetic losses in semi-directdrived permanent magnet wind generators（SDDPMWG）. Firstly，analytical method for calculating core loss ofmotor considering harmonic current was derived based on the Bertotti method. The eddy current loss of perman...
更多Number of views：1810 Amount of downloads：5595
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PENGTao
Abstract: The local leakage signal of high-voltage insulation equipment is weak and its characteristics are notobvious，which can only explain whether there is discharge. There is a phenomenon of missing judgment andmisjudgment in the actual positioning process，which is difficult to accurately locate the high-voltage...
更多Number of views：1809 Amount of downloads：3379
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PENG Yanlai，FAN Yong，YANG Xiaofeng，YANG Hongyu，WANG Zhixin
Abstract: Aiming at the problems that the amount of data in wind farm SCADA data is huge and it is difficultto classify the fast fault of wind turbine generator，a dynamic threshold AdaBoost algorithm（DTAdaBoost）wasproposed. Based on AdaBoost algorithm，the dynamic threshold was introduced to screen the sample set dat...
更多Number of views：1809 Amount of downloads：3763
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PEI Zhiqiang
Abstract：Aiming at the traditional mine hoist rocker arm bearing fault diagnosis technology which usuallyonly utilizes a certain specific geometric structure of the vibration dataset and fails to obtain the optimal similaritygraph structure，an intelligent diagnosis method for bearing faults based on adaptive graph e...
更多Number of views：1807 Amount of downloads：8135
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CHEN Kun，SUN Kaiyuan，LIN Lin，WANG Meng，ZHENG Jiehui，LI Zhigang
Abstract: With the massive access of renewable energy sources and pluralistic load，it is bi-directionalbeneficial to update the distribution network topology. It can not only promote the consumption of renewableenergy and the satisfaction of new load demands，but also improve the rationality of urban distribution net...
更多Number of views：1807 Amount of downloads：4507
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ZHANG Di，HUANG Lu，CUI Jing，SONG Zhiwei
Abstract: The AC voltage sensors are used to measure the grid voltage，which brings high hardware cost，difficult installation and low reliability. In order to realize that grid voltage sensors are not necessary，virtual fluxwas introducted to model prediction power control algorithm for cascaded H-bridge rectifier. Th...
更多Number of views：1803 Amount of downloads：5069
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ZHU Ye，CHEN Yuanrui，CHEN Yang，WANG Zhenlin
Abstract：The safe and efficient operation of lithium batteries depends on accurate state of charge（SOC）estimation. However，the traditional battery model and SOC estimation have poor robustness and reliability undernoise interference. Aiming at the problem of SOC cooperative estimation under noise interference，firstl...
更多Number of views：1797 Amount of downloads：4480
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LIU Fang，XU Yunyu，HE Guoqing，LI Guanghui，LIU Shiquan，LIU Wei
Abstract: With the increasing permeability of distributed generation，the grid becomes weaker and weaker. Itis very important to help the system achieve low voltage ride through（LVRT）when the grid voltage drops underweak grid. Aiming at a series of problems such as over-current，voltage collapse and system oscillation...
更多Number of views：1796 Amount of downloads：4668
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LIU Juan，LEI Hui，LÜ Jin，WANG Yang，Xu Deshu
Abstract：The state of charge（SOC）of batteries is one of the most important parameters in lithium-ionbattery management technology，and high-precision SOC estimation is beneficial for the grid connection andcontrol of energy storage stations. Battery charge and discharge data are not only time-series in nature，but als...
更多Number of views：1791 Amount of downloads：4273
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GUO Jiahao，YANG Xiong，FANG Xin，GUAN Jiamin
Abstract: The secondary voltage signal output by electronic capacitive voltage transformer in the primary andsecondary fusion equipment is very weak，which is easy to be interfered by high-order harmonics，resulting inunstable signal transmission. In order to solve these problems，a high-order and high-precision filter...
更多Number of views：1788 Amount of downloads：4423
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QU Chenming，GUO Kunli，BAI Yang，LI Hang，ZHU Tinghua，MA Peng
Abstract：Considering the influence of grid voltage background harmonics in weak current networks，reverseharmonic peaks appear in the grid-connected current under weighted average current control（WACC），making itimpossible for the system to achieve zero pole cancellation and thus affecting the stability of the grid-co...
更多Number of views：1785 Amount of downloads：5604
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DENG Jiahao，LIN Lingxue，ZHU Lin，WU Zilong
Abstract：Up to now，the distribution network planning project optimization method rarely considered theimpact of the speed of load growth on the power supply efficiency of the project and the year when the project isselected，and rarely considered the urgency，technical benefit and economic benefit of the project at th...
更多Number of views：1785 Amount of downloads：3853
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LIU Zhijian，ZI Chao，LI Pengcheng，GUO Cheng，LIU Jie，HUANG Wei
Abstract: Aiming at ultra-low frequency oscillation in power system caused by hydraulic turbine governingsystem，an additional damping control strategy for governing side was developed. Firstly，according to the damping torque method，the negative damping generated by the hydraulic turbine governing system was regarded...
更多Number of views：1784 Amount of downloads：3343
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LI Mingke，ZHONG Jinxing，XUE Yan，XIONG Xiaosheng，LIU Junwei，DENG Lina
Abstract: In order to effectively manage the grid short-circuit current overrun problem，optimization decisionmaking evaluation method of short-circuit current limitation scheme based on hybrid decision model considering asymmetric closeness was designed. Considering the relevant influence of the short-circuit curren...
更多Number of views：1784 Amount of downloads：4015
