|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | 采用多二元表判据的实用暂态电压稳定裕度指标研究显示文摘远距离跨区直流输电规模持续增长,使得电力系统暂态电压稳定(transient voltage stability,TVS)问题突出,量化评估暂态电压稳定裕度具有重要意义。针对现有实用暂态电压评估指标区分度低的问题,基于二元表描述,提出一种可用多二元表描述的暂态电压稳定裕度指标。首先,介绍现有的实用暂态电压稳定判据及其衍生的暂态电压跌落可接受性(transient voltage dip acceptability,TVDA)指标。其次,介绍表征可接受性的单二元表判据和表征稳定裕度的单二元表判据,并从二元表判据角度分析比较现有暂态电压可接受性判据特性及其缺陷。再次,基于不同跌落程度权重不同的思想,提出基于多二元表的可接受性判据,并给出相关权重系数的计算方法;进而结合暂态电压稳定要求,提出暂态电压稳定裕度指标。最后,基于实际电网数据仿真验证基于多二元表的暂态电压稳定裕度指标具有对负荷水平、故障等运行条件更强的适用性和有效性。 | 薛安成 周健 刘瑞煌 Joe H.Chow 毕天姝 | 2018 | 中国电机工程学报2018，38，14： | 28 |
| 2 | On the mechanism and control for the ultra-low frequency oscillation in NY Power Grid with large-scale hydropower显示文摘The power grid with large proportion of hydropower may engage the ultra-low frequency oscillation (ULFO),which threatening the operation of system.To the NY Power Grid system,whose dimension is over thousands,this paper reveals the cause of ULFO with the phase portrait method,i.e.,lies in the saturation of the different limits of the governor system of the generators,in other words,the occurrence of limit cycle is due to the non-smooth bifurcation.And furthermore,it proposes two methods to suppress ULFO with the philosophy of destroying the condition of non-smooth bifurcation.In detail,first,the phenomenon of ULFO in NY Power Grid,the damping characteristics and the limits in the governor system of the hydropower units are presented.Second,based on the non-smooth bifurcation theory,the mathematical basis of the oscillation in the non-smooth system caused by the saturation of limits is introduced.And then,the non-oscillation and oscillation dynamic of the system corresponding to without/with limits in the governor system are analyzed.Furthermore,it discusses the influence of the saturation of single limit on the characteristics of ULFO with the phase portraits.Moreover,the phase portraits of the ULFO under different faults is analyzed,and it shows that the limiting saturation occurs with a large enough disturbance.Thus,the ULFO is resulting from the negative damping of generation and the saturation of multiple limits under a large enough disturbance.In addition,according to the above mechanism,two strategies to suppress the ULFO,i.e.,the governor parameters tuning and the fault strength relief are designed.The simulation shows the effectiveness of proposed strategies. | Ancheng XUE Jiawei WANG Chao ZHENG Joe H.CHOW Tianshu BI | 2019 | Control Theory and Technology2019，17，3： | 11 |
| 3 | Microalgae as Bioabsorbents for Treating Mixture of Electroplating and Sewage Effluent显示文摘The effectiveness of copper and nickel uptake by microalgae grown in the mixture of electroplating effluent and sewage was studied. The results showed that a high percentage of copper removal (68.1%-88.2%) was achieved by Chlorellapyrenoidosa (strain No.26) reared in the mixture of 90% electroplating effluent and 10% raw sewage during the first 3 days despite the fact that cell growth was inhibited. Similar results were also obtained by using Chlorella HKBC-C3, another species collected from one of the heavy metal polluted sites in Hong Kong, isolated and cultured in the Biology Department. There was no significant difference (P>0.05) in the removal of copper and nickel from the effluent between these 2 algal species. However, it was noted that removal of nickel from the mixture by the two species were comparatively lower (<20%) than the removal of copper (>68%). | S.S.CHAN H.CHOW M.H.WONG | 1991 | Biomedical and Environmental Sciences1991，4，3： | 4 |
| 4 | FACTORS AFFECTING EARLY MORTALITY IN SPONTANEOUS RUPTURE OF HEPATOCELLULAR CARCINOMA显示文摘 | Felicia L.‐S.Tan Yu‐MengTan Alexander Y.‐F.Chung Peng C.Cheow Pierce K.‐H.Chow London L.Ooi | 2006 | ANZ Journal of Surgery2006，，6： | 2 |
| 5 | Identification of proteins differentially expressed between capillary endothelial cells of hepatocellular carcinoma and normal liver in an orthotopic rat tumor model using 2‐D DIGE显示文摘 | JinghuiJia JingyuWang MingTeh WeiSun JianhuaZhang IreneKee Pierce K.‐H.Chow Rosa Cynthia M.‐Y.Liang Maxey C. M.Chung RuowenGe | 2010 | Proteomics2010，，2： | 1 |
| 6 | Identification of proteins differentially expressed between capillary endothelial cells of hepatocellular carcinoma and normal liver in an orthotopic rat tumor model using 2‐D DIGE显示文摘 | JinghuiJia JingyuWang MingTeh WeiSun JianhuaZhang IreneKee Pierce K.‐H.Chow Rosa Cynthia M.‐Y.Liang Maxey C. M.Chung RuowenGe | 2010 | Proteomics2010，，2： | 1 |
| 7 | Enabling Inverter-based Resource Stability Control in Power Systems with High Renewable Penetration显示文摘This rapid communication provides the author’s viewpoints on the need to develop grid stability functions for inverter-based resources,in particular,controls to enhance system stability.This discussion will be focused on transient stability and frequency regulation.Some future research directions are also presented. | Joe H.Chow | 2023 | CSEE Journal of Power and Energy Systems2023，9，3： | 0 |
| 8 | Control and Stability of Large-scale Power System with Highly Distributed Renewable Energy Generation:Viewpoints from Six Aspects显示文摘Power systems are moving toward a low-carbon or carbon-neutral future where high penetration of renewables is expected.With conventional fossil-fueled synchronous generators in the transmission network being replaced by renewable energy generation which is highly distributed across the entire grid,new challenges are emerging to the control and stability of large-scale power systems.New analysis and control methods are needed for power systems to cope with the ongoing transformation.In the CSEE JPES forum,six leading experts were invited to deliver keynote speeches,and the participating researchers and professionals had extensive exchanges and discussions on the control and stability of power systems.Specifically,potential changes and challenges of power systems with high penetration of renewable energy generation were introduced and explained,and advanced control methods were proposed and analyzed for the transient stability enhancement of power grids. | Qing-Hua Wu Anjan Bose Chanan Singh Joe H.Chow Gang Mu Yuanzhang Sun Zhaoxi Liu Zhigang Li Yang Liu | 2023 | CSEE Journal of Power and Energy Systems2023，9，1： | 0 |
| 9 | Correction of Time-varying PMU Phase Angle Deviation with Unknown Transmission Line Parameters显示文摘Phasor measurement units(PMUs)provide useful data for real-time monitoring of the smart grid.However,there may be time-varying deviation in phase angle differences(PADs)between both ends of the transmission line(TL),which may deteriorate application performance based on PMUs.To address that,this paper proposes two robust methods of correcting time-varying PAD deviation with unknown parameters of TL(ParTL).First,the phenomena of time-varying PAD deviation observed from field PMU data are presented.Two general formulations for PAD estimation are then established.To simplify the formulations,estimation of PADs is converted into the optimal problem with a single ParTL as the variable,yielding a linear estimation of PADs.The latter is used by second-order Taylor series expansion to estimate PADs accurately.To reduce the impact of possible abnormal amplitude data in field data,the IGG(Institute of Geodesy&Geophysics,Chinese Academy of Sciences)weighting function is adopted.Results using both simulated and field data verify the effectiveness and robustness of the proposed methods. | Ancheng Xue He Kong Feiyang Xu Junbo Zhao Naichao Chang Joe H.Chow Haiyan Hong | 2023 | CSEE Journal of Power and Energy Systems2023，9，1： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员