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MA Junchao，WANG Chenxu，SUN Dan，PENG Yan，ZHANG Zeyu，YANG Ying
Abstract：In response to the potential frequency secondary drop problem of direct-drive wind power systemsin the scenario of continuous frequency drop faults in the power grid，the principle of primary frequency regulationof direct-drive wind power systems was analyzed. A primary frequency regulation control strategy ...
更多Number of views：585 Amount of downloads：728
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DING Chaohui，YAO Fei，JANG Jun,GAO Ang，SHAO Gao
Abstract：The traditional predictive current control for three-phase LCL grid connected inverters has theproblems of large steady-state ripple and unstable switching frequency，which is not conducive to the quality of grid connected current and the design of filters. Therefore，an improved three vector fixed frequency ...
更多Number of views：580 Amount of downloads：779
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LI Zewen，FAN Yuanliang，CHEN Weiming，WANG Shaopeng，LIN Jianli，LI Lingfei
Abstract：In the distribution network of the new power system，due to the access of a large number of newenergy power generation devices，the power supply side output of the distribution network becomes unstable andloses control ability. In order to deal with a series of problems such as the difficulty of photovoltaic ...
更多Number of views：577 Amount of downloads：3252
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REN Juan，SONG Haiming，XIN Chaoshan，WEI Junchen
Abstract：Energy storage is a kind of high-quality flexible resource to deal with the uncertainty of powersystems with high penetration of new energy. It is of great significance to develop an optimized operation strategyfor energy storage that meets the uncertain demands of the system while considering the life loss...
更多Number of views：577 Amount of downloads：563
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YANG Zhaohui，WEI Huadong，HE Liuqing，ZHANG Hao，PENG Guoping，SHI Ben
Abstract：Aiming at the problem of large switching loss of modular multilevel converter（MMC），startingfrom the switching frequency optimization strategy，the existing switching frequency optimization strategy wasimproved，and the accurate analytical formula of sub-module capacitor voltage based on the real-time value of...
更多Number of views：577 Amount of downloads：771
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SUN Mengen，GONG Haiming，ZHAO Jie，SUN Rongrong，LU Huiwen，WANG Hui
Abstract：Accurate topology and line parameter information is the basis of state estimation and securitycontrol of distribution network. Affected by the performance of collection terminals and environmental factors，themeasurement error of metering equipment often deviates from Gaussian distribution. Higher requiremen...
更多Number of views：574 Amount of downloads：736
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ZHANG Xiaolian，WU Qichuan，HAO Sipeng，Qin Shiqiu，HU Qi，ZHANG Jinhua
Abstract：The participation of wind power and energy storage in primary frequency regulation of power gridcan make better use of the advantages of wind power and energy storage for frequency regulation，which hasgradually become a new trend. However，there are some problems in the coordination of wind power system ande...
更多Number of views：571 Amount of downloads：604
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RUAN Bo，YI Bonian，YE Xuecheng，LE Jian，LANG Hongke，REN Yi
Abstract：The electricity power price setting mechanism will be fundamentally reformed with the continuousadvancement of a new round of electricity market-oriented reform. Presently，some provincial and regional powergrid enterprises are facing the problem of large fluctuations in electricity prices，which is not condu...
更多Number of views：569 Amount of downloads：599
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JI Liang，XU Jun，GUAN Ya，CUI Jingxia，HE Jie，PAN Yihang
Abstract：The three-core underground cable in the distribution network works in a harsh environment. Due tothe influence of aging，external force，high temperature and humidity，the insulation of long-term live operation iseasily damaged and causes faults. Aiming at the single-phase grounding fault of cable in distribut...
更多Number of views：563 Amount of downloads：974
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LI Wei，LI Yingqi，HOU Leihao，LI Junpeng，LIU Dejian
Abstract：The main circuit faults of the four-quadrant rectifier and the corresponding influences were analyzedand summarized，focusing on the analysis of the voltage and current parameter equations in the pre-chargingprocess of the intermediate DC link，and the estimation method of the converter input current and the ...
更多Number of views：563 Amount of downloads：685
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LIU Zhipeng，QU Zhe，YU Cong，WU Qian，CHEN Bo，FANG Yaqi
Abstract：Over the years，machine learning has made some breakthroughs in the insulation defects of gasinsulated switchgear（GIS），but the traditional methods have the disadvantages of incomplete information，excessive reliance on artificial feature extraction and low diagnosis rate. In order to solve these problems，adia...
更多Number of views：558 Amount of downloads：599
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ZHU Junwei，HE Feng，CHEN Peixing
Abstract：With the continuous integration of new energy generation and the increasing degree of power linecabling，the problem of voltage exceeding limits in new type power system is becoming increasingly prominent. Adynamic reactive power optimization model for new type power grids was established to address this iss...
更多Number of views：555 Amount of downloads：730
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ZHOU Hanying，LIANG Junyu，YANG Jiaquan，GAO Jing，YUAN Xingyu，JIN Xiaolong
Abstract：New energy power generation has strong volatility and randomness，and its large-scale gridconnection seriously affects the stable operation of power grid frequency. The new generation of power system alsorelies on communication network for data transmission，which will consume a lot of network resources and i...
更多Number of views：554 Amount of downloads：2967
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ZHANG Chunli，LIU Hongwen，FANG Pengxing，CHAI Chenchao，ZHANG Wenqiong
Abstract：Incidents such as the burning of electromagnetic voltage transformers（PT），damage to primaryharmonic suppressors，and fuse tripping occur frequently in low and medium voltage distribution systems due toferroresonance，severely affecting the safe and stable operation of the system. Therefore，through theoretical...
更多Number of views：552 Amount of downloads：1044
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JIANG Yang，CHEN Zhong，WU Yongkang
Abstract：The permanent magnet synchronous generator（PMSG）is prone to current overstep in unbalancedgrid，which affects the reliability of grid-connected system. To solve this problem，low-voltage ride-throgh controlstrategy based on direct power control was proposed. In this strategy，the direct power inner loop was us...
更多Number of views：550 Amount of downloads：533
