-
WANG Xiaoyang,ZHAO Jinbin,ZHU Yuxin
Abstract: With more and more renewable energy devices and loads connected to the traditional power grid bypower electronic equipment,the negative resistance characteristics of power electronic equipment lead to the weakinertia characteristics of high power electronic power systems. Therefore,the stability of the mul...
更多
Number of views:2384 Amount of downloads:1440
-
SHAYuheng,MEI Xin,LAN Jiao,HAN Fangxu,ZHAO Xuechen
Abstract: In view of the problems that the lack of unified data source,unified information standard,unifiedsupport platform for common services caused by multi system parallel in each stage of power grid enterprise projectmanagement,and resource and information "isolated island" caused by "chimney" system architectu...
更多
Number of views:2358 Amount of downloads:1117
-
LI Qinzhao,ZHAO Xuemin
Abstract: When the microgrid is operating in island mode,the cascaded H-bridge(CHB)converter as aninterface device may need to be configured with a non-sinusoidal reference wave of pulse width modulation(PWM)when implementing auxiliary functions such as negative sequence compensation. In order to avoid overmodulatio...
更多
Number of views:2352 Amount of downloads:1100
-
LUO Lan,WANG Yuhong,SONG Ruihua,BI Jingtian,CHEN Shiyu,WAN Liangbin
Abstract: In the multi terminal flexible direct current(DC)transmission system,the flexible direct inner andouter loop control can not provide inertial support for the receiving end passive network. Traditional virtualsynchronous generator(TVSG)control can provide inertia support for passive network,but it can only ...
更多
Number of views:2351 Amount of downloads:1028
-
YANG Shihua,CAO Jun,CHEN Liang,CUI Bo,YU Long
Abstract: In order to solve the problems of large calibration error and model reconstruction failure in theoperation of traditional coaling instrument,an improved calibration algorithm based on direct linear transformation model and an improved 3D reconstruction algorithm based on time-of-flight method were proposed...
更多
Number of views:2348 Amount of downloads:987
-
SUN Chuanjie,TIAN Kai,YANG Jingran,CHU Zilin,MA Jie
Abstract: A high-power high-frequency power supply was designed for test requirements of some specialelectrical equipment. In the power supply,cascaded H-bridge was adopted to form five-level topology structure,the integrated modulation method was adopted,including bipolar PWM modulation,carrier phase-shifted SPWMmo...
更多
Number of views:2344 Amount of downloads:1051
-
LÜ Wei,WANG Han,ZHANG Jianwen,CHEN Gen,CAI Xu
Abstract: Compared with onshore wind power,the natural conditions at sea are bad and the traffic isinconvenient to maintain the wind power system,so wind power system needs to be highly reliable. The systemreliability can be effectively improved by using fault-tolerant control. A fault-tolerant control strategy by i...
更多
Number of views:2337 Amount of downloads:986
-
CHEN Guangzhu,YANG Yuxin,ZHANG Yanan,LÜ Peihe,WANG Jianquan
Abstract: The new version of the national standard GB/T 15576—2020《Low-voltage reactive powercompensation assemblies》was released on November 19,2020,and has been implemented on June 1,2021,replacing the old standard. Through comparative analysis of the content of the new and old standards and key tests,the test met...
更多
Number of views:2336 Amount of downloads:1183
-
CHENG Zhiyuan,WU Longfei,LI Zheng,SUI Licheng,WU Xiaoting
Abstract: Current transformer(CT)inductive energy extraction is the most effective power supply method foronline monitoring equipment of power transmission cables. However,the low current of the transmission cable willcause the CT to fail to obtain energy,which will lead to the occurrence of equipment energy supply ...
更多
Number of views:2317 Amount of downloads:1093
-
LI Chasen,WANG Daihua,ZHANG Qiang,TANG Hong
Abstract: The crankshaft is an important component that determines the life of an internal combustion engine.It bears compound alternating stress for a long time,so it is easy to produce fatigue failure. Aiming at the shortageof crankshaft dynamic stress testing methods,a stress testing system with long endurance an...
更多
Number of views:2269 Amount of downloads:951
-
ZHANG Dewang,CHEN Zhigeng,ZHANG Zhichao,ZHOU Yu
Abstract: Traditional point prediction is difficult to analyze the randomness and uncertainty of wind powerinadequately. Aiming at the shortcomings of point prediction,an interval prediction model based on improvedwhale optimization algorithm and fast learning network(IWOA-FLN)was proposed. Firstly,the convergencesp...
更多
Number of views:2261 Amount of downloads:979
-
WU Weikun,GONG Shiying,ZHENG Yaohua,SHAN Chao,DONG Chuanyou
Abstract: In order to intelligently identify crosslinked polyethylene(XLPE)cable faults in high noiseenvironment,a method of XLPE cable fault identification based on deep residual shrinkage network was proposed.In this method,the soft threshold was embedded into the deep structure of the network as a nonlineartransf...
更多
Number of views:2201 Amount of downloads:930
-
WANG Shijun,HAO Quan,LI Wenlong
Abstract: In view of the problems of unstable operation waveforms,high output current stress andinstantaneous fluctuation difference of load in the current sharing control of two-way DC-DC converter in flexiblesubstation,a method of independent current sharing control of two-way DC-DC converter in flexible substatio...
更多
Number of views:2167 Amount of downloads:989
-
CHEN Jinyang,LEI Yong,CAO Xiaoyan,HE Xin,ZHU Xiaobo
Abstract: The operation of 5G communication base stations in remote areas requires a lot of power. The basestation power supply system composed of wind and solar new energy can well solve the problem of difficult accessto the power grid in remote areas. The selection of the component capacity of the new energy base ...
更多
Number of views:2152 Amount of downloads:927
-
LIU Siyan
Abstract: In order to realize the speed estimation and speed regulation of the permanent magnet synchronousmotor(PMSM)controller,a new type of fractional-order model reference adaptive speed observer was designed.Compared with integer-order observers,this strategy enhanced the adjustable degrees of freedom of the co...
更多
Number of views:2124 Amount of downloads:1063