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您的检索式：作者名="GAO BenFeng"
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| 1 | Simulation and study on mitigation measures of frequent subsynchronous oscillation with low amplitude at multi-power plants显示文摘Subsynchronous oscillation (SSO) with low amplitude that exceeds cumulative fatigue threshold of the generator shaft frequently could significantly reduce the shaft's service life, which is a new SSO problem that emerges in recent years. According to the real recording oscillograph, the basic reason for frequently over-threshold SSO with low amplitude at multi-power plants was analyzed based on Hulunbuir League system. The sensitivities of the electrical damping to the main electrical parameters in the contributing loop of subsynchronous torsional interaction were calculated. Based on the sensitivities, a simulation method was presented, which was used to excite the same oscillation as the actual case by exerting disturbance on the firing angle. The limitation of wide-band and narrow-band supplementary subsynchronous damping controller (SSDC) for mitigating this kind of SSO was analyzed based on the electromagnetic transient simulation model of Hulunbuir League system. The difference of supplementary excitation damping controller (SEDC) and parallel-form FACTS connected to the generator terminal was compared from the aspects of response time and the ability of damping torque supplying. The analysis indicates that their response time is similar but FACTS has stronger ability of damping torque supplying than SEDC. Time-domain simulation method was used to compare the mitigation effects of SEDC, static var compensator (SVC) and static synchronous compensator (STATCOM). Considering the mitigation effect, the floor space limit of the power plant and so on, STATCOM was considered as the best mitigation measure. A control strategy of cascaded STATCOM for engineering application was presented and the capacity for SSO mitigation as well as output characteristics was analyzed. The analysis indicates that STATCOM using the proposed control strategy has better mitigation effect and output characteristics with smaller capacity. | XIAO XiangNing ZHANG Jian GAO BenFeng WU YunSheng LUO Chao GUO ChunLin YANG Lin | 2013 | Science China(Technological Sciences)2013，56，6： | 13 |
| 2 | Active coherent control of nanoscale light confinement:Modulation of plasmonic modes and position of hotspots for surface-enhanced Raman scattering detection显示文摘Multistep plasmonic nanostructures can induce the deep modulation ofelectromagnetic-field interactions on the nanoscale for positioning hotspots,and this generation of enhanced fields is important in many optical applications.In this article, a new strategy is proposed for fabricating a plasmonic double-stacked nanocone (DSC) nanostructure. In the DSC structure, a tunable plasmonichybrid mode proceeds from the strong coupling of the plasmonic resonance ofa fundamental cavity mode with a localized surface plasmon gap mode. In thenanostructure, the far-field response is deeply modulated and the hottest spotscan be effectively positioned on the top surface of the DSC nanostructure. Acontrollable and cost-effective mask-reconfiguration technique for manufacturingthe multiscale nanostructure is developed, which guarantees the generation ofthe introduced crucial stage on the DSC nanostructure. To evaluate the features ofthe plasmonic resonance, the DSC nanostructure is used as a surface-enhancedRaman scattering (SERS) substrate for detecting 4-mercaptopyridine moleculesunder specific excitation conditions. Its good performance, with an averagemeasured SERS enhancement factor as high as 108, | Zhendong Zhu Qixia Wang Fa Zeng Oubo You Sitian Gao Benfeng Bai Qiaofeng Tan Guofan Jin Qunqing Li Shoushan Fan Wei Li Yushu Shi Xueshen Wang | 2017 | Nano Research2017，10，9： | 0 |
| 3 | Biomimetic leaf structures for ultra-thin electromagnetic wave absorption显示文摘Ultra-thin electromagnetic wave(EMW)absorbers present challenging demands on EMW absorption performance.Drawing inspiration from heather leaf structures,this study introduces an innovative design strategy for EMW absorbing material,proposing biomimetic leaf SnO_(2) structures(bio-SnO_(2))on carbon fabric(CF).By employing leaf-shaped SnS2 as precursors,biomimetic leaf SnO_(2) nanostructures are constructed on CF surface after a simple thermal treatment,resulting in bio-SnO_(2)@CF composite.Experimental results indicate that bio-SnO_(2)@CF exhibits an exceptional minimum reflection loss of-54.8 dB at an incredibly thin thickness of 1.2 mm.Radar cross section(RCS)simulations further validate the outstanding EMW attenuation ability of bio-SnO_(2)@CF,attaining a maximum RCS reduction value of 16.9 dBm^(2) at an incident wave angle ofθ=0°.This novel research showcases the biomimetic structural design strategy and its remarkable function in enhancing the EMW absorbing performance at ultra-thin absorber thickness. | Shikun Hou Ying Wang Feng Gao Fei Jin Benfeng Zhu Qiong Wu Hongliang Ge Zhihai Cao Hua Yang | 2024 | Nano Research2024，17，5： | 0 |
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