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WANG Chun，WU Pengtao，GUO Bin，LÜ Jing，HUANG Hongwei，MAO Wenzhao
Abstract: In order to improve the efficiency of power grid equipment maintenance，an evaluation index ofequipment maintenance value based on Markov model was proposed，and an optimization decision method of power grid maintenance based on maintenance value evaluation was constructed. The value evaluation index of powe...
更多Number of views：3498 Amount of downloads：6190
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LU Shengzhi，CAO Junjie，ZHOU Feng，JIN Cheng，CHEN Zhenghua
Abstract: With the global energy and environmental problems becoming increasingly prominent，the regionalintegrated energy system（RIES）with multi-energy complementary characteristics is an effective solution. In orderto realize the comprehensive and reasonable evaluation of energy efficiency of the RIES，a detailed ev...
更多Number of views：3537 Amount of downloads：6140
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ZHUANG Gewei，GU Zhen ，FENG Xiuqing ，DUANYan
Abstract: Automatic verification system of smart meter may be abnormal in the long-term operation process，but the regular manual detection method can not timely learn the risk information，shortening the period of manual inspection will reduce the work efficiency of automatic verification. In most cases，the sample da...
更多Number of views：3474 Amount of downloads：5431
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LU Wu，ZHENG Renjie，ZHAO Wenbin，TANG Jiayuan
Abstract: Efficient and accurate short-term load forecasting is essential to the safe and stable operation of thepower system. A combined prediction model based on empirical mode decomposition（EMD）and gated recurrentunit（GRU）was proposed. First，the date factors ，meteorological factors and historical load factor were...
更多Number of views：3713 Amount of downloads：6171
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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：5363 Amount of downloads：9792
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ZHANG Fangyuan，JING Yun，WANG Dan
Abstract: A vector control method based on the modified super-twisting observer and non-singular terminalsliding mode was proposed for stand-alone doubly-fed wind power generation systems under unbalanced loads. The fundamental frequency and double frequency components of the rotor current were observed by the modif...
更多Number of views：9552 Amount of downloads：19658
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ZHANG Cheng，HAN Cun，REN Wei，ZHAO Jinlei，ZHANG Xiao，ZHANG Xudong
Abstract: Based on the AC-DC-AC variable frequency speed control system of synchronous motor，theparameters of PI regulator were optimized by chaos particle swarm optimization algorithm. A pseudo-randomsequence generation method was constructed using a chaotic map dynamic integer tent map，and an objective function of...
更多Number of views：4366 Amount of downloads：7459
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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：4174 Amount of downloads：6050
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LIU Wenqi，DING Wenfang
Abstract: In order to overcome the shortcomings of the classic Boost converter，such as low boost ratio，largeinput current ripple，and high voltage stress of power devices，a new type of zero input current ripple high gain nonisolated DC/DC converter was proposed. The combination of isolation type Sepic converter，coupl...
更多Number of views：4056 Amount of downloads：6437
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WEN Chuanxin，ZHU Jinda，WU Di，YUN Yang，CHENG Yuan，DU Bochao
Abstract: Silicon carbide（SiC）MOSFET has great advantages in improving efficiency and power density ofinverter for new energy vehicles，due to its advantages as high frequency，low loss and high junction temperature. For the SiC MOSFET module，it is very important to study the short-circuit protection with high current...
更多Number of views：4032 Amount of downloads：8076
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HUANG Haihong，HUANG Yuwei，LIU Xin
Abstract: Aiming at the requirements of portable DC insulation detection devices，a dynamic differencealgorithm based on single-arm was proposed，and a portable DC insulation detection and verification integratedmachine was designed based on this algorithm. The principle of the single-arm insulation monitoring system ...
更多Number of views：4442 Amount of downloads：8516
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GUO Jinzhi，PAN Zijun，YUAN Shaojun，SUN Rongfu，DING Ran， XU Haixiang，WANG Jingran，WANG Longyang
Abstract: The maximum power point tracking（MPPT）technology of the photovoltaic power generationsystem is the great significance to ensure the output efficiency of the photovoltaic power generation system and thestability of the system. An MPPT control algorithm was proposed based on an improved conductance increment...
更多Number of views：3813 Amount of downloads：6270
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CAI Wenbin，CHENG Xiaolei，NAN Jianan，LÜ Haixia，LI Ye，LI Jingyu
Abstract: With the proposed goal of achieving double carbon in China，a higher proportion of new energy willbe connected to the grid in the future. An analysis method was proposed for assessing the adequacy of flexibilityresources of power system with a high proportion new energy. The adequacy index of proposed flexi...
更多Number of views：3762 Amount of downloads：6748
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WANG Haozhu，XIE Qin，DENG Fangming，YANG Yang
Abstract: The growing demand for new energy electric vehicles（EVs）has further boosted the demand forelectric car charging. However，the gap between operating companies results in that the information of charging piles cannot be fully and effectively presented to the demanding public.Aiming at the above problems，a new...
更多Number of views：3720 Amount of downloads：6928
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ZHANG Yi，CHANG Pengfei
Abstract: With the increasing penetration of large-scale wind and PV power within the power system，theywill inevitably participate in the load frequency contro（l LFC）. Since the power output of wind and PV is unstable，which would affect the power balance of grid，thus cause unstable frequency. A LFC method based on d...
更多Number of views：3690 Amount of downloads：6189
