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| 1 | A novel low voltage ride through strategy for cascaded power electronic transformer显示文摘In view of the operating characteristics for voltage sags of AC side of the power electronic transformer(PET),a low-voltage ride through(LVRT)strategy adapted to bidirectional power exchange of PET is proposed for the purposes of maintaining the system stability,assisting the system voltage recovery and protecting PET safety.During the asymmetric voltage sag,the negative sequence current of PET is eliminated to ensure the symmetry of the injected current.According to the degree of positive sequence voltage sag,the reactive current injection is provided to assist in voltage recovery.According to the PET active power condition before the voltage sag,the level and direction of which are maintained as far as possible without exceeding the limit,for which the disturbance to the AC and DC grids is reduced.Finally,the effectiveness of the proposed LVRT strategy is verified by simulation model. | Jiexiang Han Xiangping Kong Peng Li Zhe Zhang Xianggen Yin | 2019 | Protection and Control of Modern Power Systems2019，4，1： | 3 |
| 2 | Expression, purifica- tion, and functional characterization of recombinant human inter- leukin - 7 显示文摘 | Yong Luo Xiangping Kong Aimin Xu | 2009 | Protein Expr Purif2009，63，1： | 1 |
| 3 | Faultcurrent study of wind turbine driven DFIG with crowbarprotection显示文摘 | KONG Xiangping ZHANG Zhe YIN Xianggen | 2014 | Elektrotehniski Vvestnik2014，81，12： | 1 |
| 4 | Study of fault current characteristics of DFIG consideringdynamic response of RSC显示文摘 | KONG Xiangping ZHANG Zhe YIN Xianggen | 2014 | IEEE Transactions onEnergy Conversion2014，26，2： | 1 |
| 5 | Study of fault current characteristics of the DFIG considering dynamic response of the RSC显示文摘 | Kong Xiangping Zhang Zhe Yin Xianggen | 2014 | IEEE Transactions on Energy Conversion2014，29，2： | 1 |
| 6 | Breaking the diffrac- tion-limited resolution barrier in fiber-optical two-photon fluorescence endoscopy by azimuthally polarized beam 显示文摘 | Gu Min Hang Kong Li Xiangping | 2014 | Scientific reports2014，4，： | 1 |
| 7 | Directional Gaussian Filter-based LBP Descriptor For Textural Image Classification显示文摘 | Xiangping Sun Jin Wang Ronghua Chen Lingxue Kong Mary F.H. She | 2011 | Procedia Engineering2011，，： | 1 |
| 8 | Subsynchronous resonance and its mitigation for power system with unified power flow controller显示文摘Control strategy of unified power flow controller(UPFC)utilizing dq decoupling control is deduced in this paper,which can closely follow the control orders of the active and reactive power.The subsynchronous resonance(SSR)characteristics of a series compensated system equipped with UPFC are studied,and the results reveal that SSR characteristics of the system may vary significantly with UPFC in service or not.Consequently,supplementary subsynchronous damping controller(SSDC)for UPFC is proposed and investigated,and the effectiveness of the proposed SSDC is verified by damping torque analysis and time domain simulations. | Xinyao ZHU Meng JIN Xiangping KONG Jingbo ZHAO Jiankun LIU Qian ZHOU | 2018 | Journal of Modern Power Systems and Clean Energy2018，6，1： | 1 |
| 9 | Equivalent model of multi-type distributed generators under faults with fast-iterative calculation method based on improved PSO algorithm显示文摘There are various types of distributed generators (DGs) with different grid integration strategies. The transient characteristics of the fault currents provided by the DGs are different to those of conventional synchronous generators. In this paper, a distribution network with multi-type DGs is investigated, including consideration of DG low-voltage ride through (LVRT). The fault current characteristics of two typical DGs, i.e. an inverter-interfaced distributed generator (IIDG) and a doubly-fed induction generator (DFIG), are analyzed, considering the specific operation modes. Based on analysis of the fault characteristics, an equivalent model of the multi-type DGs under symmetrical/asymmetrical fault conditions is established. A fast-iterative fault calculation method for enhancing the calculation efficiency while avoiding local convergence is then proposed using an improved particle swarm optimization (PSO) algorithm. A simulation system of the distribution network with multi-type DGs is established in PSCAD/EMTDC. The simulation results validate the high accuracy and calculation efficiency of the proposed calculation method of the fault components. This can assist in the settings of the protection threshold. | Puyu Wang Jinyuan Song Fangyu Liang Fang Shi Xiangping Kong Guangen Xie Xiao-Ping Zhang Xinxin Gu | 2021 | Protection and Control of Modern Power Systems2021，6，1： | 0 |
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