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Resilience-oriented Valuation for Energy Storage Amidst Extreme Events

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Chinese Journal of Electrical Engineering 2023年第3期9卷 15-25页

作者： Youzhen Wu Jianxiao Wang Yiyang Song yunyun xie College of Engineering Peking UniversityBeijing 100871China National Engineering Laboratory for Big Data Analysis and Applications Peking UniversityBeijing 100871China School of Electrical and Electronic Engineering North China Electric Power UniversityBeijing 102206China School of Automation Nanjing University of Science and TechnologyNanjing 210094China

In power grids,the frequency is increasing of extreme accidents which have a low probability but high risk such as natural disasters and deliberate *** has sparked discussions on the resilience of power ***-storage systems(ESSs)are critical for enhancing the resilience of power ***,with their mechanism of flexible charging and discharging,adjust energy usage as needed during disasters,thereby mitigating the impact on the grid and enhancing security and ***,in turn,ensures the power system’s stable ***,there is limited systematic research quantifying the economic value of energy storage in resilience ***,a model and methodology were proposed to quantify the value of energy storage systems for enhancing grid resilience during extreme events.A two-stage stochastic optimization mathematical model was *** first stage involves pre-deployment based on day-ahead expectations,and the second stage involves simulating potential failure scenarios through real-time *** the temporal dimension,the energy storage systems with flexible regulation capabilities was used as emergency power sources to reduce occurrences of ***,a novel index was proposed that quantifies the resilience value of energy storage as the economic value of energy storage per unit of capacity,as reflected in the emergency dispatch *** index helps determine the balance between the energy storage investment cost and resilience ***,an IEEE-30 node transmission system was used to verify the feasibility and effectiveness of the proposed *** findings revealed a significant improvement in the resilience value,with a 23.49%increase observed when energy storage systems were implemented compared to the scenario without energy storage *** optimal capacity configurations for the flywheel,lithium-ion batteries,and pumped hydro storage were 10 MW,11 MW,and 12 MW,respectively,highligh

关键词： Energy storage dispatch model power system resilience resilience-oriented valuation two-stage optimization model

Optimized dispatch of wind farms with power control capability for power system restoration

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Journal of Modern Power Systems and Clean Energy 2017年第6期5卷 908-916页

作者： yunyun xie Changsheng LIU Qiuwei WU Kairong LI Qian ZHOU Minghui YIN School of Automation Nanjing University of Science and TechnologyNanjing 210094China Department of Electrical Engineering Centre for Electric Power and EnergyTechnical University of DenmarkKgs.2800LyngbyDenmark Electric Power Research Institute of State Grid Jiangsu Electric Power Company Nanjing 211103China

As the power control technology of wind farms develops,the output power of wind farms can be constant,which makes it possible for wind farms to participate in power system ***,due to the uncertainty of wind energy,the actual output power can’t reach a constant dispatch power in all time intervals,resulting in uncertain power sags which may induce the frequency of the system being restored to go outside the security ***,it is necessary to optimize the dispatch of wind farms participating in power system *** that the probability distribution function(PDF)oftransient power sags is hard to obtain,a robust optimization model is proposed in this paper,which can maximize the output power of wind farms participating in power system *** results demonstrate that the security constraints of the restored system can be kept within security limits when wind farm dispatch is optimized by the proposed method.

关键词： Blackout Dispatch optimization of wind farm Power control of wind farm System restoration Uncertainty of wind energy

Crystalline and amorphous Mn0_(2)cathodes with open framework enable high-performance aqueous zinc-ion batteries

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Frontiers of Materials Science 2021年第2期15卷 202-215页

作者： Chunfu HUANG Cong WU Zilu ZHANG yunyun xie Yang LI Caihong YANG Hai WANG College of Materials Science and Engineering Guilin University of TechnologyGuilin 541004China College of Physics and Technology Guangxi Normal UniversityGuilin 541004China

Currently,δ-Mn0_(2)is one of the popularly studied cathode materials for aqueous zinc-ion batteries(ZIBs)but impeded by the sluggish kinetics of Zn^(2+)and the Mn cathode ***,we report our discovery in the study of crystalline/amorphous Mn0_(2)(disordered Mn0_(2)),prepared by a simple redox reaction in the order/disorder *** disordered Mn0_(2)cathode material,having open framework with more active sites and more stable structure,shows improved electrochemical performance in 2 mol L^(-1)ZnSO_(4)/0.1 mol L^(-1)MnS0_(4)aqueous *** delivers an ultrahigh discharge specific capacity of 636 mA·h·g^(-1)at 0.1 A·g^(-1)and remains a large discharge capacity of 216 mA·h·g^(-1)even at a high current density of 1 A·g^(-1)after 400 *** disordered Mn0_(2)could be a promising cathode material for aqueous *** storage mechanism of the disordered Mn0_(2)electrode is also systematically investigated by structural and morphological examinations of ex situ,ultimately proving that the mechanism is the same as that of the δ-Mn0_(2)*** work may pave the way for the possibility of using the order/disorder engineering to introduce novel properties in electrode materials for high-performance aqueous ZIBs.

关键词： aqueous zinc-ion battery open framework cathode δ-Mn0_(2)

Amorphous nickel-cobalt bimetal-organic framework nanosheets with crystalline motifs enable efficient oxygen evolution reaction: Ligands hybridization engineering

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Journal of Energy Chemistry 2021年第2期30卷 251-259,I0009页

作者： Yang Li Zhonggui Gao Huiming Bao Binghui Zhang Cong Wu Chunfu Huang Zilu Zhang yunyun xie Hai Wanga College of Materials Science and Engineering.Guilin University of Technology Guilin 541004GuangxiChina College of Civil Engineering and Architecture Guilin University of TechnologyGuilin 541004GuangxiChina College of Physics and Technology Cuangxi Normal UniversityGuilin 541004GuangxiChina Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials Fuzhou University.Fuzhou 350002FujianChina

Development of high-efficiency and low-cost electrocatalyst for oxygen evolution reaction(OER) is very important for use at alkaline water ***-organic frameworks(MOF) provide a rich platform for designing multi-functional materials due to their controllable composition and ultra-high surface ***,we report our findings in the development of amorphous nickel-cobalt bimetal-organic framework nanosheets with crystalline motifs via a simple "ligands hybridization engineering" *** complexes' ligands contain inorganic ligands(H_2 O and NO_3) and organic ones,hexamethylenetetramine(HMT).Further,we investigated a series of mixed-metal with multi-ligands materials as OER catalysts to explore their possible advantages and *** is found that the Ni doping is an effective approach for optimizing the electronic configuration,changing lattice ordering degree,and thus enhancing activities of HMT-based ***,the crystalline-amorphous boundaries of various HMTbased electrocatalyst can be easily controlled by simply changing amounts of Ni-precursor *** a result,the optimized ultrathin(Co,0.3 Ni)-HMT nanosheets can reach a current density of 10 mA cm^(-2)at low overpotential of 330 mV with a small Tafel slope of 66 mV dec^(-1).Our findings show that the electronic structure changes induced by Ni doping,2 D nanosheet structure,and MOF frameworks with multiligands compositions play critical roles in the enhancement of the kinetically sluggish electrocatalytic *** present study emphasizes the importance of ligands and active metals via hybridization for exploring novel efficient electrocatalysts.

关键词： Electrocatalyst Oxygen evolution reaction Metal-organic framework Organic ligands 2D materials

ATP homeostasis and signaling in plants

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Plant Communications 2024年第4期5卷 52-66页

作者： Jiaqi Xiao Yijie Zhou yunyun xie Taotao Li Xinguo Su Junxian He Yueming Jiang Hong Zhu Hongxia Qu Guangdong Provincial Key Laboratory of Applied Botany South China Botanical GardenChinese Academy of SciencesGuangzhou 510650China University of Chinese Academy of Sciences Beijing 100049China Guangdong AIB Polytechnic Guangzhou 510507China School of Life Sciences and State Key Laboratory of Agrobiotechnology The Chinese University of Hong KongShatinNew TerritoriesHong KongChina

ATP is the primary form of energy for plants,and a shortage of cellular ATP is generally acknowledged to pose a threat to plant growth and development,stress resistance,and crop *** overall metabolic processes that contribute to the ATP pool,from production,dissipation,and transport to elimination,have been studied *** evidence has revealed that in addition to its role in energy supply,ATP also acts as a regulatory signaling molecule to activate global metabolic *** of the eATP receptor DORN1 contributed to a better understanding of how plants cope with disruption of ATP homeostasis and of the key points at which ATP signaling pathways intersect in cells or whole *** functions of SnRK1a,the master regulator of the energy management network,in restoring the equi-librium of the ATP pool have been demonstrated,and the vast and complex metabolic network mediated by SnRK1a to adapt tofluctuating environments has been *** paper reviews recent advances in understanding the regulatory control of the cellular ATP pool and discusses possible interactions among key regulators of ATP-pool homeostasis and crosstalk between iATP/eATP signaling *** of ATP deficit and modulation of cellular ATP homeostasis mediated by SnRK1a in plants are discussed at the physiological and molecular ***,we suggest future research directions for modulation of plant cellular ATP homeostasis.

关键词： ATP DORN1 SnRK1a ATP homeostasis and signaling

Research on Load Recovery during Network Reconfiguration Based on Artificial Bee Colony Algorithm 36

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Research on Load Recovery during Network Reconfiguration Bas...

A Consensus-based Decentralized Algorithm for Service Restoration in Active Distribution Networks

第36届中国控制会议

作者： Changsheng Liu yunyun xie Xi Chen Kunlong Song Chenggen Wang Qian Zhou Nanjing University of Science and Technology the Jiangsu Electric Power Research Institute

ISBN: (纸本)9781538629185

Load recovery is an important part of network reconfiguration that aims at reconfiguring a stable skeleton network and recovering electrical supply as quickly as possible following a *** the load recovery strategy may affect a strategic decision for generator start-up and restoration path selection,it is necessary to comprehensively deal with above three aspects simultaneously,including load recovery,generator start-up and restoration path selection,during the network ***,in current research,network reconfiguration and load recovery are considered *** optimal load recovery scheme using minimum time leads to the reduction of the efficiency of network ***,this paper studies on the influence of load recovery under the subsequent network reconfiguration.A strategy that only recovers the load on the optimal restoration path is *** optimization model for load recovery during network reconfiguration is established,where the optimization target is maximizing the weighted capacity of load *** Artificial Bee Colony（ABC） Algorithm is adapted to solve the optimization problem and New England system is used to validate the effectiveness of the proposed method.

关键词： Artificial Bee Colony Algorithm black start load recovery network reconfiguration

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A Consensus-based Decentralized Algorithm for Service Restor...

False Data Injection Attacks against State Estimation in AC-DC Hybrid Power System

第40届中国控制会议

作者： Sheng Cai yunyun xie Yun Zou Hao Wu Li Shen Nanjing University of Science and Technology Power Dispatching and Control Center State Grid Nantong Comany

The ever-growing requirement for resilience suggests to enable self-healing features of smart distribution system using intelligent communication and control method. Traditional service restoration methods apply the centralized algorithms to maximize the load restoration. However, such methods depend solely on a control center and would lead to single points of failure. In this paper, a consensus-based decentralized algorithm is proposed to build the service restoration framework for an outage distribution system. First, a decentralized multi-agent system（DMAS） interaction mechanism is designed. Then, a consensus-based DMAS strategy is presented for determining the critical loads restored. Furthermore, an average consensus algorithm is proposed to discover the global information in microgrids（MGs）, and the Dijkstra’s algorithm is utilized to modify the MG structure. The effectiveness of proposed method is validated by numerical simulations with the modified IEEE 37 bus system. The test results show that the proposed method can realize the service restoration even though the control center is out of work and has an excellent performance on solution time.

关键词： Distribution system service restoration microgrids consensus-based decentralized algorithm

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False Data Injection Attacks against State Estimation in AC-...

考虑孤岛微电网建立过程功率冲击的弹性配电网主动预防调度

第三十九届中国控制会议

作者： Rui Lin Xinteng Yan Feng Li Xuan Zhang Xiaoshu Yuan Zi Sang yunyun xie CSG EHV Power Transmission Company Nanjing University of Science and Technology Dongfang Electric Co.LTD

The extensive application of information and communication technology enhances the observability and controllability of modern power ***,it increases their vulnerabilities to malicious *** data injection attacks(FDIAs) are a class of common cyber-attacks,which compromise the grid meters and mislead the state estimation *** in AC system are widely researched,if an FDIA satisfies certain conditions,the attacker can manipulate these modified measurements to bypass the commonly used residue-based bad data detection(BDD) algorithms,and introduce arbitrary errors into the state ***,with the increasing proportion of High Voltage Direct Current(HVDC) in power system,these studies are not applicable to AC-DC hybrid *** this paper,we propose the possibility of constructing an FDIA in an AC-DC hybrid power ***,this paper analyzes the basic principle of a successful FDIA in an AC ***,the paper proposes an attack strategy in an AC-DC hybrid power system and constructs the attack ***,we demonstrate the attack model on a modified IEEE 30-bus system.

关键词： Cyber security false data injection attacks state estimation AC-DC hybrid power system

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电工技术学报 2023年第23期38卷 6419-6432页

作者：蔡胜谢云云张玉坪郭健陈汹南京理工大学自动化学院南京210094 南瑞集团有限公司(国网电力科学研究院有限公司) 南京210094

配电网发生紧急故障时,通过构建孤岛微电网对重要负荷进行分区供电,可以缩小停电范围,提升配电网弹性。然而,孤岛微电网建立前线路上流通的功率会对微电网产生阶跃型功率冲击,所造成的频率失稳可能会导致微电网无法安全建立。为此,该文... 详细信息

配电网发生紧急故障时,通过构建孤岛微电网对重要负荷进行分区供电,可以缩小停电范围,提升配电网弹性。然而,孤岛微电网建立前线路上流通的功率会对微电网产生阶跃型功率冲击,所造成的频率失稳可能会导致微电网无法安全建立。为此,该文提出一种考虑孤岛微电网建立过程中功率冲击的弹性配电网主动预防调度方法。通过在灾前进行机组组合、网架重构,并限制线路上的流通功率,减少断线故障发生时微电网内的功率冲击,保证灾后孤岛微电网的安全可靠建立。首先,以调度成本和负荷损失量最小为目标,建立考虑功率冲击的配电网灾前-灾后协调调度随机优化模型;然后,对模型进行线性化处理,将其转换为混合整数规划问题进行快速求解;最后,采用IEEE 13节点配电测试系统,对所提预防调度方法的有效性进行验证。

关键词：弹性配电网孤岛微电网预防调度功率冲击频率稳定