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QI Zhenbiao，BAO Yuying，FAN Shen，PAN Min，HU Pengfei，WU Hongbin
Abstract：In the multi-source measurement system of distribution network，the sampling frequency and timestamp of multi-source measurement equipment are not synchronized，as well as the bad data in the system，whichwill lead to the bias among the measurement data，thus affecting the accuracy of state estimation. To this ...
更多Number of views：1202 Amount of downloads：5031
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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：3769 Amount of downloads：5026
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LEI Aoyu，SU Tingting，MEI Yong，HUANG Fangneng，WANG Yu，WU Wei
Abstract：In the critical period of the implementation of the strategy of "carbon neutrality，carbon peak"，thefrequency characteristics of the new power system show a series of new characteristics，such as the reduction ofnode inertia level and obvious distribution difference，and the maintenance of frequency stability ...
更多Number of views：1937 Amount of downloads：4974
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HU Qingjun，CAO Xinhui，FENG Yu，ZHU Lipeng，ZHAO Wenjing，WEI Yushan
Abstract: The process automation control system L2 of an aluminum zinc plating production line wasexplored. In response to potential production faults on the production line，a process data control module of theprocess automation control system was provided. Through the analysis of process data，the fault location of ...
更多Number of views：1541 Amount of downloads：4972
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YOU Hanwen，CHEN Xi
Abstract：A modeling method based on fractional calculus was proposed to analyze the working mode of halfbridge LLC resonant converters and the influence of the "parameter drift" of the resonant capacitor on the workingmode of the converters. Then，based on the Oustaloup's filtering algorithm，a simulation model of...
更多Number of views：1302 Amount of downloads：4949
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SUN Lunan，ZHOU Yong，LIU Xiaodong，LIU Yawei，WANG Haoyu
Abstract：Combined with the current software features and the requirements for function expansion of thecurrent test equipment engineering project，a set of test data analysis system was designed. The system includes the functions of remote test data monitoring，historical data playback，test data analysis，data predicti...
更多Number of views：1771 Amount of downloads：4919
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LI Zhenbo，DAI Linwang，LI Shaolin，ZHANG Xueguang
Abstract: At present the mainstream of doubly-fed induction generators（DFIG）control mode is the currentsource type vector control mode，which is lack of independent of frequency and voltage support ability，but the voltage source type virtual synchronous machine control method can solve the shortcomings. In order to m...
更多Number of views：3379 Amount of downloads：4918
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SHI Dongsheng，WANG Tao，QIU Shuming，WANG Wenguang，WANG Yubo
Abstract: Application of TAC1 series high performance high power inverter products of Tianjin ElectricResearch Institute on 20-high reversible mill was introduced.The common DC bus multi drive system consists ofactive infeed converter and inverter. Firstly，the device selection of the system and the calculation of tra...
更多Number of views：1926 Amount of downloads：4916
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KONG Fanting，CHEN Jian，DI Meixian，FU Baoxin，WANG Jianquan
Abstract: Electric power system is becoming more and more power electronization with each passing day，additional losses of the power grid caused by the power quality problem is becoming more and more serious witheach passing day. Solving the power quality problem has become the new way to help the power grid to save...
更多Number of views：2602 Amount of downloads：4915
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YANG Xuan，LI Rui，CAO Xiaoqing，LI Lin，GUO Ran
Abstract：During the transition of a microgrid inverter from grid-connected mode to islanded mode and viceversa，pre-synchronization measures are necessary under the virtual synchronous generator （VSG） controlarchitecture to prevent voltage waveform distortion and current surges. A VSG-based parameter-optimized presyn...
更多Number of views：1498 Amount of downloads：4902
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YUAN Minxin，YIN Zhonggang，LUO Peien，ZHANG Yanqing
Abstract: To address the problem of the long detection time of the current detection method during the opencircuit fault diagnosis of inverter insulated gate bipolar transistor（IGBT）of the permanent magnet synchronousmotor（PMSM）drive system，an error current polarity method based on model predictive current control（M...
更多Number of views：2068 Amount of downloads：4898
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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：4299 Amount of downloads：4898
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YANGYifan，YIN Han，LU Zhiye，YU Xueying
Abstract: In order to solve the problems of large volume and short service life of the traditional electrolyticcapacitor frequency converter，the thin film capacitor was used to replace the electrolytic capacitor to constitute theAC-DC-AC frequency converter without electrolytic capacitor. Aiming at the problem of bu...
更多Number of views：1910 Amount of downloads：4831
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YIN Jianqiang，WU Xianming，WU Fengzhi，YANG Peihao
Abstract: The sensorless control of PMSM based on control algorithm is a research hotspot in the field ofmotor control. A PMSM sensorless control system based on low-speed pulse and high-frequency stator flux injectionwas proposed，and the traditional stator flux estimator was improved and the high-frequency signal wa...
更多Number of views：5063 Amount of downloads：4828
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ZHANG Guoqiang，NIU Ben，YANG Hua，WANG Gaolin，XU Dianguo
Abstract: Maximum torque per ampere（MTPA）control is one of the important methods to improve theefficiency of sensorless drive system of permanent magnet synchronous motor（PMSM）. In the sensorless drivesystem，the traditional calculation method deduces the analytical solution of the optimal current vector angleaccordi...
更多Number of views：2030 Amount of downloads：4816
