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| 1 | Low-carbon unit commitment with intensive wind power generation and carbon capture power plant显示文摘The paper proposes a stochastic unit commitment(UC)model to realize the low-carbon operation requirement and cope with wind power prediction errors for power systems with intensive wind power and carbon capture power plant(CCPP).A linear re-dispatch strategy is introduced to compensate the wind power deviation from the spot forecast.The robust optimization technique is employed to obtain a reliable commitment plan against all realizations of wind power within the uncertainty set given by probabilistic forecast.The proposed model is validated with IEEE 39-bus system.The advantages of flexible CCPPs are compared to the normal coal-fueled plants and the impacts of robustness controlling are discussed. | Jiaming LI Jinyu WEN Xingning HAN | 2015 | Journal of Modern Power Systems and Clean Energy2015，3，1： | 19 |
| 2 | Transmission Network Expansion Planning Considering Uncertainties in Loads and Renewable Energy Resources显示文摘This paper proposes a novel method for transmission network expansion planning(TNEP)that take into account uncertainties in loads and renewable energy resources.The goal of TNEP is to minimize the expansion cost of candidate lines without any load curtailment.A robust linear optimization algorithm is adopted to minimize the load curtailment with uncertainties considered under feasible expansion costs.Hence,the optimal planning scheme obtained through an iterative process would be to serve loads and provide a sufficient margin for renewable energy integration.In this paper,two uncertainty budget parameters are introduced in the optimization process to limit the considered variation ranges for both the load and the renewable generation.Simulation results obtained from two test systems indicate that the uncertainty budget parameters used to describe uncertainties are essential to arrive at a compromise for the robustness and optimality,and hence,offer a range of preferences to power system planners and decision makers. | Jinyu Wen Xingning Han Jiaming Li Yan Chen Haiqiong Yi Chang Lu | 2015 | CSEE Journal of Power and Energy Systems2015，1，1： | 17 |
| 3 | Grid Forming Converters in Renewable Energy Sources Dominated Power Grid:Control Strategy,Stability,Application,and Challenges显示文摘The renewable energy sources(RESs)dominated power grid is an envisaged infrastructure of the future power system,where the commonly used grid following(GFL)control for grid-tied converters suffers from lacking grid support capability,low stability,etc.Recently,emerging grid forming(GFM)control methods have been proposed to improve the dynamic performance and stability of grid-tied converters.This paper reviews existing GFM control methods for the grid-tied converters and compares them in terms of control structure,grid support capability,fault current limiting,and stability.Considering the impact of fault current limiting strategies,a comprehensive transient stability analysis is provided.In addition,this paper explores the typical applications of GFM converters,such as AC microgrid and offshore wind farm high-voltage direct current(OWF-HVDC)integration systems.Finally,the challenges to the GFM converters in future applications are discussed. | Haobo Zhang Wang Xiang Weixing Lin Jinyu Wen | 2021 | Journal of Modern Power Systems and Clean Energy2021，9，6： | 15 |
| 4 | Minimum Load-curtailment in Transmission Network Planning Considering Integrated Wind Farms显示文摘提出应用鲁棒线性优化理论来研究电网规划中含多个风电场的最小切负荷量计算问题,为含多个风电场的系统安全性研究提供了一条新的思路。根据Seng-Cheol Kang提出的鲁棒线性优化理论,建立电网规划中考虑风电场影响的最小切负荷量模型。该模型以出力上下限和出力期望值来描述风电场的出力,最终转化为一确定性的线性规划问题并进行求解。在计及或不计及发电机调整的情况下,该模型均能够给出最安全的切负荷方案,除此以外还能给出更多介于最可靠与最经济之间的切负荷方案,实现灵活决策;在计及发电机出力可调的情况下,该模型能够给出相应的发电机出力方案;该模型能够初步给出各种切负荷方案下电网规划方案的可靠程度。基于修正的Garver’s 6节点系统和修正的巴西南部46节点系统算例测试结果验证了该方法的有效性。 | CHEN Yan WEN Jinyu CHENG Shijie | 2011 | 中国电机工程学报2011，31，34： | 14 |
| 5 | Optimal Trade-Off Between Regulation and Wind Curtailment in the Economic Dispatch Problem显示文摘Generator regulation and wind power curtailment are two conflicting ways to deal with the inaccurate prediction and volatility of wind power.This study focuses on planning the day-ahead schedule based on optimal trade-off between regulation of generators and wind curtailment.Compared to traditional economic dispatch methods,the proposed schedule is more robust and adaptive to multiple forecast scenarios instead of a single forecast scenario.The works of this paper are as follows:First,an economic dispatch problem based on multiple scenarios is formulated with the objective of minimizing both generator regulation and wind curtailment.Next,a forecast method for wind power scenarios is given.Finally,the proposed model is verified by comparing with other dispatch models that are based on single forecast scenario.The simulation results demonstrate the effectiveness of the proposed method with less wind curtailment,generator regulation,and operational cost.In addition,the penalty factors are set as parameters and the influences on the generators’regulation and wind curtailment are analyzed,providing the reference for system operators with different regulatory purposes. | Jinghua Li Jiakun Fang Jinyu Wen Yi Pan Qiang Ding | 2015 | CSEE Journal of Power and Energy Systems2015，1，4： | 12 |
| 6 | Minimum energy storage for power system with high wind power penetration using p-efficient point theory显示文摘Minimum energy storage(ES)and spinning reserve(SR)for day-ahead power system scheduling with high wind power penetration is significant for system operations.A chance-constrained energy storage optimization model based on unit commitment and considering the stochastic nature of both the wind power and load demand is proposed.To solve this proposed chance-constrained model,it is first converted into a deterministic-constrained model using p-efficient point theory.A single stochastic net load variable is developed to represent the stochastic characteristics of both the wind power and load demand for convenient use with the p-efficient point theory.A probability distribution function for netload forecast error is obtained via the Kernel estimation method.The proposed model is applied to a wind-thermal-storage combined power system.A set of extreme scenarios is chosen to validate the effectiveness of the proposed model and method.The results indicate that the scheduled energy storage can effectively compensate for the net load forecast error,and the increasing wind power penetration does not necessarily require a linear increase in energy storage. | LI JingHua WEN JinYu CHENG ShiJie WEI Hua | 2014 | Science China(Information Sciences)2014，57，12： | 9 |
| 7 | Research on hybrid multi-terminal high-voltage DC technology for offshore wind farm integration显示文摘Multi-terminal high-voltage DC(MTDC)technology is a promising way to transmit large amounts of offshore wind power to the main grids.This paper proposes a hybrid MTDC scheme to integrate several offshore wind farms into the onshore power grids at different locations.A hybrid four-terminal HVDC system comprising two onshore line commutated converters(LCCs)and two voltage source converters(VSCs)connecting an offshore wind farm is constructed in PSCAD/EMTDC.A coordination control scheme based on the VSCs’AC voltage control and the LCCs’DC voltage droop control is designed to ensure smooth system operation and proper power sharing between onshore AC grids.The operational characteristics of the system are analyzed.In addition,a black start-up method without any auxiliary power supply for the VSCs is proposed.The transmission scheme is tested through simulations under various conditions,including start-up,wind speed variation,and the disconnection of one VSC or of one LCC. | Peng ZHAN Chenghao LI Jinyu WEN Yu HUA Meiqi YAO Naihu LI | 2013 | Journal of Modern Power Systems and Clean Energy2013，1，1： | 9 |
| 8 | Probabilistic small signal stability analysis of power system with wind power and photovoltaic power based on probability collocation method显示文摘Recently, with increasing improvements in the penetration of wind power and photovoltaic power in the world, probabilistic small signal stability analysis(PSSSA) of a power system consisting of multiple types of renewable energy has become a key problem. To address this problem, this study proposes a probabilistic collocation method(PCM)-based PSSSA for a power system consisting of wind farms and photovoltaic farms. Compared with the conventional Monte Carlo method, the proposed method meets the accuracy and precision requirements and greatly reduces the computation; therefore, it is suitable for the PSSSA of this power system. Case studies are conducted based on a 4-machine 2-area and New England systems, respectively. The simulation results show that, by reducing synchronous generator output to improve the penetration of renewable energy, the probabilistic small signal stability(PSSS) of the system is enhanced. Conversely, by removing part of the synchronous generators to improve the penetration of renewable energy, the PSSS of the system may be either enhanced or deteriorated. | Cai Yan Linli Zhou Wei Yao Jinyu Wen Shijie Cheng | 2019 | Global Energy Interconnection2019，2，1： | 9 |
| 9 | Research on fast solid state DC breaker based on a natural current zero-crossing point显示文摘The DC fault characteristics of voltage source converter based high voltage direct current(VSC-HVDC)systems are analyzed in this paper.The phenomenon whereby the capacitor on DC side discharges quickly during a DC fault contributes to a large short-circuit fault current.Neither traditional DC breakers nor DC switches can cut off the fault current under this condition.A fast solid state DC breaker design method is proposed in this paper.This method is based on the fault current characteristics of the inverter in multi-terminal HVDC systems(MTDC),where a fault current appears at the natural zerocrossing point near the inverter.At this point,by coordinating the AC breakers near the rectifier,the DC breaker could reliably cut off the DC fault current and protect the system.A detailed model for this fast solid state DC breaker and its operation sequence are studied,based on this design method.Simulations modeling a five-terminal meshed DC grid and a fast DC breaker were carried out with PSCAD/EMTDC using this design method.The results from the simulations confirmed the validity of the design method. | Wang XIANG Yu HUA Jinyu WEN Meiqi YAO Naihu LI | 2014 | Journal of Modern Power Systems and Clean Energy2014，2，1： | 9 |
| 10 | Transient stability risk assessment of power systems incorporating wind farms显示文摘Large-scale wind farm integration has brought several aspects of challenges to the transient stability of power systems.This paper focuses on the research of the transient stability of power systems incorporating with wind farms by utilizing risk assessment methods.The detailed model of double fed induction generator has been established.Wind penetration variation and multiple stochastic factors of power systems have been considered.The process of transient stability risk assessment based on the Monte Carlo method has been described and a comprehensive risk indicator has been proposed.An investigation has been conducted into an improved 10-generator 39-bus system with a wind farm incorporated to verify the validity and feasibility of the risk assessment method proposed. | Lu MIAO Jiakun FANG Jinyu WEN Weihua LUO | 2013 | Journal of Modern Power Systems and Clean Energy2013，1，2： | 7 |
| 11 | Glucose-regulated protein 75 suppresses apoptosis induced by glucose deprivation in PC12 cells through inhibition of Bax conformational change显示文摘调整葡萄糖的蛋白质(Grp75 ) 75 是属于热吃惊蛋白质的重要分子的女伴 70 家庭并且在线粒体主要住。Grp75 能保护房间免受葡萄糖剥夺(GD ) 的伤害损害。然而,它由执行这功能的分子的机制是未知的。这里,我们报导 Grp75 能推迟细胞色素 c 的版本,还原剂 apoptosis 由 GD 导致,并且我们也发现 Grp75 能减少 Bax/Bcl-2 基因表示比率并且在这个过程期间禁止 Bax 的 conformational 变化。在结论,这些调查结果建议 Grp75 overexpression 能禁止 GD 导致的 apoptosis。Grp75 禁止了 Bax conformational 变化推迟细胞色素 c 的版本,因此提供保护给对 GD 毒性首先被用作一个神经原模型的 PC12 房间。 | Ling Yang Xiaoyu Liu Jinyu Hao Yunlong Yang Mingxia Zhao Ji Zuo Wen Liu | 2008 | Acta Biochimica et Biophysica Sinica2008，40，4： | 6 |
| 12 | An investigation of the persistence property of wind power time series显示文摘Mining the inherent persistence property of the time series of wind power is crucial for forecasting and controlling wind power.Few common methods exist that can fully depict and quantify the persistence property.Based on the definition of the active power output state of a wind farm,this paper describes the statistical persistence property of the duration time and state transition.Based on the results of our analysis of significant amounts of wind power field measurements,it is found that the duration time of wind power conforms to an inverse Gaussian distribution.Additionally,the state transition matrix of wind power is discovered to yield a ridge property,the gradient of which is related to the time scale of interest.A systemaic methodology is proposed accordingly,allowing the statistical characteristics of the wind power series to be represented appropriately. | SUN HaiShun LI JiaMing LI JingHua Wu Tong WEN JinYu XIE HaiLian YUE ChengYan | 2014 | Science China(Technological Sciences)2014，57，8： | 5 |
| 13 | Corrosion resistance and anti-soiling performance of micro-arc oxidation/graphene oxide/stearic acid superhydrophobic composite coating on magnesium alloys显示文摘Magnesium(Mg)alloys,the lightest metal construction material used in industry,play a vital role in future development.However,the poor corrosion resistance of Mg alloys in corrosion environments largely limits their potential wide applications.Therefore,a micro-arc oxidation/graphene oxide/stearic acid(MAO/GO/SA)superhydrophobic composite coating with superior corrosion resistance was fabricated on a Mg alloy AZ91D through micro-arc oxidation(MAO)technology,electrodeposition technique,and self-assembly technology.The composition and microstructure of the coating were characterized by scanning electron microscopy,X-ray diffraction,energy dispersive spectroscopy,and Raman spectroscopy.The effective protection of the MAO/GO/SA composite coating applied to a substrate was evaluated using potentiodynamic polarization,electrochemical impedance spectroscopy tests,and salt spray tests.The results showed that the MAO/GO/SA composite coating with a petal spherical structure had the best superhydrophobicity,and it attained a contact angle of 159.53°±2°.The MAO/GO/SA composite coating exhibited high resistance to corrosion,according to electrochemical and salt spray tests. | Dong Wang Chen Ma Jinyu Liu Weidong Li Wei Shang Ning Peng Yuqing Wen | 2023 | International Journal of Minerals,Metallurgy and Materials2023，30，6： | 3 |
| 14 | Bifurcation analysis for an SMIB power system with series capacitor compensation associated with sub-synchronous resonance显示文摘In this paper,an introduction to the bifurcation theory and its applicability to the study of sub-synchronous resonance (SSR) phenomenon in power system are presented. The continuation and bifurcation analysis software AUTO97 is adopted to investigate SSR for a single-machine-infinite-bus power system with series capacitor compensation. The investigation results show that SSR is the result of unstable limit cycle after bifurcation. When the system exhibits SSR, some complex periodical orbit bifurcations, such as torus bifurcation and periodical fold bifurcation, may happen with the variation of limit cycle. Furthermore, the initial operation condition may greatly influence the ultimate state of the system. The time-domain simulation is carried out to verify the effectiveness of the results obtained from the bifurcation analysis. | DUAN XianZhong WEN JinYu CHENG ShiJie | 2009 | Science China(Technological Sciences)2009，52，2： | 3 |
| 15 | The design and fault ride through control of un-interrupted DC-DC Autotransformer显示文摘This paper proposed a novel type of DC-DC converter, termed as un-interrupted DC Autotransformer(un-interrupted DC AUTO), which has the capability to ride through DC fault on either side of the converter without blocking any devices. Besides that, the adequately designed converter retains the advantages of DC AUTO technology, namely reduced investment cost and transmission loss. To begin with, the topology and basic attributes of the un-interrupted DC AUTO are illustrated. Then the design goals and the corresponding design procedures are analyzed. Furthermore, an effective control system is proposed to enable the converter steady operation during both normal and faulted conditions. Finally, a 1000 MW ±320 kV/±640 kV test system is built on PSCAD/EMTDC platform to verify the technical feasibility of the proposed converter and the effectiveness of the control strategy. | LI MengBo XIANG Wang ZUO WenPing YAO LiangZhong LIN WeiXing WEN JinYu | 2018 | Science China(Technological Sciences)2018，61，12： | 2 |
| 16 | Probabilistic load flow method based on Nataf transformation and Latin hypercube sampling显示文摘 | CHEN Yan WEN Jinyu CHENG Shijie | 2013 | IEEE Trans on Sustainable Energy2013，4，2： | 1 |
| 17 | An investigation on the active-power variations of wind farms 显示文摘 | LIN Weixing WEN Jinyu CHENG Shijie | 2012 | IEEE Transac- tions on Industry Applications2012，48，3： | 1 |
| 18 | Multiport DC-DC autotransformer for interconnecting multiple high voltage DC sys- tems at low cost 显示文摘 | LIN Weixing WEN Jinyu CHENG Shijie | 2015 | IEEE Transactions on Power Electronics2015，30，12： | 1 |
| 19 | Coordinated control strategy of wind turbine generator and energy storage equipment for frequency support显示文摘 | Miao Lu Wen Jinyu Xie Hailian | 2015 | IEEE Transactions on Industry Applications2015，51，4： | 1 |
| 20 | Power-to-Hydrogen by Electrolysis in Carbon Neutrality: Technology Overview and Future Development显示文摘Power-to-hydrogen by electrolysis(PtHE)is a promising technology in the carbon-neutral evolution of energy.PtHE not only contributes to renewable energy integration but also accelerates decarbonization in industrial sectors through green hydrogen production.This paper presents a comprehensive review of PtHE technology.First,technical solutions in PtHE technology are introduced to clarify pros and cons of one another.Besides,the multiphysics coupling and the multi-energy flow are investigated to reveal the insight mechanism during operation of compactly assembled industrial PtHE plants.Then,the development trends of core components in PtHE plants,including electrocatalysts,electrode plates and operation strategy,are reviewed,respectively.Research thrusts needed for PtHE in carbon-neutral transition are also summarized.Finally,three configurations of the PtHE plant in energy system integration are introduced,which can achieve renewable energy integration and efficient energy utilization.Index Terms-Carbon neutrality,power-to-hydrogen nby electrolysis(PtHE),multiphysics coupling,multidisciplinary. | Zhiyao Zhong Jiakun Fang Kewei Hu Danji Huang Xiaomeng Ai Xiaobo Yang Jinyu Wen Yuan Pan Shijie Cheng | 2023 | CSEE Journal of Power and Energy Systems2023，9，4： | 1 |
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