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Two-Stage Planning of Distributed Power Supply and Energy Storage Capacity Considering Hierarchical Partition control of Distribution Network with Source-Load-Storage

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Energy Engineering 2024年第9期121卷 2389-2408页

作者： Junhui Li Yuqing Zhang Can Chen Xiaoxiao Wang Yinchi Shao Xingxu Zhu Cuiping Li Key Laboratory of Modern Power System Simulation and Control&Renewable Energy Technology Ministry of Education(Northeast Electric Power University)Jilin132012China State Grid Jibei Electric Power Co. Ltd.Electric Power Research InstituteBeijing100045China

Aiming at the consumption problems caused by the high proportion of renewable energy being connected to the distribution network,it also aims to improve the power supply reliability of the power system and reduce the operating costs of the power *** paper proposes a two-stage planning method for distributed generation and energy storage systems that considers the hierarchical partitioning of ***,an electrical distance structural index that comprehensively considers active power output and reactive power output is proposed to divide the distributed generation voltage regulation domain and determine the access location and number of distributed power ***,a two-stage planning is carried out based on the zoning *** the phase 1 distribution network-zoning optimization layer,the network loss is minimized so that the node voltage in the area does not exceed the limit,and the distributed generation configuration results are initially determined;in phase 2,the partition-node optimization layer is planned with the goal of economic optimization,and the distance-based improved ant lion algorithm is used to solve the problem to obtain the optimal distributed generation and energy storage ***,the IEEE33 node systemwas used for *** results showed that the voltage quality was significantly improved after optimization,and the overall revenue increased by about 20.6%,verifying the effectiveness of the two-stage planning.

关键词： Zoning control two-stage planning site selection and capacity determination optimized scheduling improved ant lion algorithm

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Online Data-Driven Event-Triggered control for Heterogeneous Nonlinear Platoons Under Communication Constraints

Online Data-Driven Event-Triggered Control for Heterogeneous...

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2023 China Automation Congress, CAC 2023

作者： Guo, Jingzheng Guo, Hongyan Wang, Han Zhao, Xu Shi, Wanqing College of Communication Engineering Jilin University Changchun China College of Communication Engineering Jilin University State Key Laboratory of Automotive Simulation and Control Changchun China

ISBN: (纸本)9798350303759

In this study, we propose an online learning data-driven event-triggered control approach for the synthesis of control in heterogeneous nonlinear platoons under communication constraints. The system is estimated using a Gaussian process(GPs) regression based on a squared exponential(SE) kernel, while the controller design is implemented through feedback linearization. Furthermore, event-triggered conditions are constructed to guarantee system stability. Through simulation comparisons with time-triggered control utilizing fixed sampling, the superiority of the proposed method is demonstrated. © 2023 IEEE.

关键词： Feedback linearization

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Three distinct optical-switching states in phase-change materials containing impurities:From physical origin to material design

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Journal of Materials Science & Technology 2021年第16期75卷 118-125页

作者： Chaobin Bi Kaicheng Xu Chaoquan Hu Ling Zhang Zhongbo Yang Shuaipeng Tao Weitao Zheng State Key Laboratory of Superhard Materials Key Laboratory of Automobile Materials of MOESchool of Materials Science and EngineeringJilin UniversityChangchun 130012China China-Japan Union Hospital of Jilin University Changchun 130033China State Key Laboratory of Supramolecular Structure and Materials College of ChemistryJilin UniversityChangchun 130012China State Key Laboratory of Automotive Simulation and Control.Jilin University Changchun 130025China

Ge2 Sb2 Te5 is the most widely utilized chalcogenide phase-change material for non-volatile photonic applications,which undergoes amorphous-cubic and cubic-hexagonal phase transition under external ***,the cubic-hexagonal optical contrast is negligible,only the amorphous-cubic phase transition of Ge_(2)Sb_(2)Te_(5) is *** limits the optical switching states of traditional active displays and absorbers to *** find that increasing structural disorder difference of cubic-hexagonal can increase optical contrast close to the level of ***,an amorphous-cubichexagonal phase transition with high optical contrast is *** this phase transition,we have developed display and absorber with three distinct switching states,improving the switching performance by 50%.Through the combination of first-principle calculations and experiments,we reveal that the key to increasing structural disorder difference of amorphous,cubic and hexagonal phases is to introduce small interstitial impurities(like N)in Ge2 Sb2 Te5,rather than large substitutional impurities(like Ag)previously *** is explained by the formation energy and lattice *** on the impurity atomic radius,interstitial site radius and formation energy,C and B are also potential suitable *** addition,introducing interstitial impurities into phase-change materials with van der Waals gaps in stable phase such as GeSb_(4) Te_(7),GeSb_(2) Te_(4),Ge_(3)Sb_(2) Te_(6),Sb_(2)Te_(3) will produce high optical contrast amorphous-metastable-stable phase *** research not only reveals the important role of interstitial impurities in increasing the optical contrast between metastable-stable phases,but also proposes varieties of candidate matrices and *** provides new phase-change materials and design methods for non-volatile optical devices with multi-switching states.

关键词： Phase change materials Impurities Three states Structural disorder Photonic applications

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Insights into effects of algae on decay and distribution of bacterial pathogens in recreational water:Implications for microbial risk management

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Journal of Environmental Sciences 2022年第3期34卷 92-103页

作者： Tingting Fang Zuotao Zhang Hui Wang Matt Rogers Qijia Cui State Key Joint Laboratory on Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China Department of Civil and Environmental Engineering National University of SingaporeEngineering Drive 3117576Singapore

The decay and distribution of bacterial pathogens in water is an important information for the health risk assessment to guide water safety management, and suspended algae might affect bacterial pathogens in water. This study established microcosms to investigate the effects of algae-related factors on the representative indicators and opportunistic pathogen species in water. We found that suspended algae increased the persistence of targeted species by 1-2 orders of magnitude of concentrations compared to microcosms without algae;and the effect of algae on microbial survival was affected by water nutrient levels(i.e., carbon, nitrogen and phosphorus), as the increased microbial persistence were correlated to the increased algae concentrations with more nutrient supplies. Moreover, decay and distribution profiles of representative species were determined. The three opportunistic pathogen species( Pseudomonas aeruginosa, Aeromonas hydrophila and Staphylococcus aureus) showed lower decay rates(0.82–0.98/day, 0.76–0.98/day, 0.63–0.87/day) largely affected by algae-related factors, while the enteric species( Escherichia coli and Enterococcus faecalis) had higher decay rates(0.94–1.31/day, 0.89–1.21/day) with little association with algae, indicating the propensity for attachment to algae is an important parameter in microbial fate. Together results suggest suspended algae played an evident role in the decay and distribution of bacterial pathogens, providing important implications regarding microbial safety in recreational water.

关键词： Suspended algae Bacterial pathogen decay Bacterial pathogen distribution Recreational water Microbial risk assessment

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A Distributed Photovoltaics Ordering Grid-Connected Method for Analyzing Voltage Impact in Radial Distribution Networks

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Energy Engineering 2024年第10期121卷 2937-2959页

作者： Cuiping Li Kunqi Gao Can Chen Junhui Li Xiaoxiao Wang Yinchi Shao Xingxu Zhu Key Laboratory of Modern Power System Simulation and Control&Renewable Energy Technology Ministry of Education(Northeast Electric Power University)Jilin132012China State Grid Jibei Electric Power Co. Ltd.Electric Power Research InstituteBeijing100045China

In recent years,distributed photovoltaics(DPV)has ushered in a good development situation due to the advantages of pollution-free power generation,full utilization of the ground or roof of the installation site,and balancing a large number of loads ***,under the background of a large-scale DPV grid-connected to the county distribution network,an effective analysis method is needed to analyze its impact on the voltage of the distribution network in the early development stage of ***,a DPV orderly grid-connected method based on photovoltaics grid-connected order degree(PGOD)is *** method aims to orderly analyze the change of voltage in the distribution network when large-scale DPV will be ***,based on the voltagemagnitude sensitivity(VMS)index of the photovoltaics permitted grid-connected node and the acceptance of grid-connected node(AoGCN)index of other nodes in the network,thePGODindex is constructed to determine the photovoltaics permitted grid-connected node of the current photovoltaics grid-connected state ***,a photovoltaics orderly grid-connected model with a continuous updating state is constructed to obtain an orderly DPV grid-connected *** simulation results illustrate that the photovoltaics grid-connected order determined by this method based on PGOD can effectively analyze the voltage impact of large-scale photovoltaics grid-connected,and explore the internal factors and characteristics of the impact.

关键词： Radial distribution network distributed photovoltaics photovoltaics grid-connected order degree electrical distance photovoltaics action area

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Transport, transformation, and ecological impacts of brominated flame retardants in soils: A comprehensive review

Environmental Chemistry and Ecotoxicology

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Environmental Chemistry and Ecotoxicology 2025年 7卷 1142-1157页

作者： Jia Zhang Dan Li Ying Yuan Kunlong Hui Wenbing Tan State Key Laboratory of Environmental Criteria and Risk Assessment State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution Chinese Research Academy of Environmental Sciences Beijing 100012 China

Brominated flame retardants (BFRs) have become significant contaminants of emerging concern (CECs), resulting in detrimental effects on soil health, human health, and ecosystem sustainability. Their environmental impacts have spurred extensive research into environmental chemistry and ecotoxicology. Despite the widespread detection of both BFRs and Novel Brominated Flame Retardants (NBFRs) in soils, there are few assessments of the environmental behavior and fate of the BFRs. Therefore, this review comprehensively identifies the sources, distribution, transport, transformation, ecotoxicological effects, and remediation strategies of BFRs in soils. Principal findings indicate that adsorption-desorption, mostly influenced by soil organic matter, controls the mobility and transformation of BFRs. Photolysis dominates surface soils, while aerobic and anaerobic biodegradation predominate in subsurface layers. The main factors influencing the bioavailability of BFRs are shed light on in this review. These factors such as the physicochemical properties of BFRs, soil characteristics, and combined pollution are specifically discussed. Moreover, the development, physiological, and biochemical responses of soil organisms to exposure to the BFRs are summarized. Single strategies for addressing BFRs have certain limitations. Urgent actions are needed to focus on environmental behavior and remediation strategies under the “One Health” framework to enrich research gap areas of BFRs, NBFRs, and transformation products.

关键词： Brominated flame retardants Soil Transport Transformation Bioavailability Toxicity

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Scrap Iron Filings assisted nitrate and phosphate removal in low C/N waters using mixed microbial culture

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Frontiers of Environmental Science & Engineering 2021年第4期15卷 215-228页

作者： Sanjena Narayanasamydamodaran Jian’e Zuo Haiteng Ren Nawnit Kumar State Key Joint Laboratory of Environmental Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing100084China State Key Laboratory of Hydroscience and Hydraulic Engineering Tsinghua UniversityBeijing100084China

This study focuses on identifying the factors under which mixed microbial seeds assist bio-chemical denitrification when Scrap Iron Filings(SIF)are used as electron donors and adsorbents in low C/N ratio *** studies were conducted in abiotic and biotic reactors containing fresh and aged SIF under different dissolved oxygen concentrations with NO_(3)^(-)−N and/or PO_(4)^(3−)influent(s)and their nitrate/phosphate removal and by-product formations were *** reactors were seeded with a homogenized mixed microbial inoculum procured from natural sludges which were enriched over 6 months under denitrifying conditions in the presence of *** indicated that when influent containing 40 mg/L of NO_(3)^(-)−N was treated with 5 g SIF,79.9%nitrate reduction was observed in 8 days abiotically and 100%removal was accomplished in 20 days when the reactor was *** abiotic and seeded reactors removed more than 92%PO_(4)^(3−)under high DO conditions in 12 *** and biochemical removal of NO_(3)^(-)−N and abiotic removal of PO_(4)^(3−)were higher under independent NO_(3)^(-)−N/PO_(4)^(3−)loading,while 99%PO_(4)^(3−)was removed biochemically under combined NO_(3)^(-)−N and PO_(4)^(3−)*** study furthers the understandings of nitrate and phosphate removal in Zero Valent Iron(ZVI)assisted mixed microbial systems to encourage the application of SIF-supported bio-chemical processes in the simultaneous removals of these pollutants.

关键词： Scrap iron filing Nitrate removal Phosphate removal Mixed culture denitrification Zero valent iron

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Selective capture of Tl2O from flue gas with formation of p-n junction on V_(2)O_(5)-WO_(3)/TiO_(2)catalyst under working conditions

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Green Energy & Environment 2023年第1期8卷 4-9页

作者： Jianjun Chen Rongqiang Yin Gongda Chen Junyu Lang Xiaoping Chen Xuefeng Chu Junhua Li State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijingChina School of Physical Science and Technology Shanghai Tech UniversityShanghaiChina Key Laboratory of Architectural Cold Climate Energy Management Ministry of EducationJilin Jianzhu UniversityChangchunChina Guangdong Energy Group Science and Technology Research Institute Co. Ltd.GuangdongChina

Thallium(Tl)compounds,highly toxic to biology,are usually released into flue gas during fossil/minerals combustion,and further distributed in water and *** this work,we fundamentally investigated the capture of gaseous Tl_(2)O by industrial V2O5-WO3/TiO_(2)catalyst under working condition in Tl-containing flue *** and theoretical results indicated that the Tl_(2)O has significant electron-feeding capacity and easily donate electron to unoccupied orbitals of TiO_(2),leading to dismutation of Ti 2p and inartificial formation of p-n junction on TiO_(2)surface,which prompted Tl_(2)O selectively interacted with TiO_(2)in flue ***,we proposed and verified an effective way to capture gaseous Tl_(2)O,which offered almost the best choice to eliminate Tl emission from flue gas and expanded the function of the TiO_(2)-based *** formation of p-n junction on commercial V2O5-WO3/TiO_(2)catalyst under working condition was revealed for the first time,which can be a valuable reference for both heterocatalysis and electro/photocatalysis.

关键词： Tl Catalyst SCR Capture p-n junction

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Speed and Accuracy Tradeoff for LiDAR Data Based Road Boundary Detection

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IEEE/CAA Journal of Automatica Sinica 2021年第6期8卷 1210-1220页

作者： Guojun Wang Jian Wu Rui He Bin Tian State Key Laboratory of Automotive Simulation and Control Jilin UniversityChangchun 130022China State Key Laboratory of Management and Control for Complex Systems Institute of AutomationChinese Academy of SciencesBeijing 100190 the Qingdao Academy of Intelligent Industries ShandongChina

Road boundary detection is essential for autonomous vehicle localization and decision-making,especially under GPS signal loss and lane *** road boundary detection in structural environments,obstacle occlusions and large road curvature are two significant ***,an effective and fast solution for these problems has remained *** solve these problems,a speed and accuracy tradeoff method for LiDAR-based road boundary detection in structured environments is *** proposed method consists of three main stages:1)a multi-feature based method is applied to extract feature points;2)a road-segmentation-line-based method is proposed for classifying left and right feature points;3)an iterative Gaussian Process Regression(GPR)is employed for filtering out false points and extracting boundary *** demonstrate the effectiveness of the proposed method,KITTI datasets is used for comprehensive experiments,and the performance of our approach is tested under different road *** experiments show the roadsegmentation-line-based method can classify left,and right feature points on structured curved roads,and the proposed iterative Gaussian Process Regression can extract road boundary points on varied road shapes and traffic ***,the proposed road boundary detection method can achieve real-time performance with an average of 70.5 ms per frame.

关键词： 3D-LiDAR autonomous vehicle object detection point cloud road boundary

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Charging management and pricing strategy of electric vehicle charging station based on mean field game theory

Charging management and pricing strategy of electric vehicle...

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作者： Lin, Runzi Chu, Hongqing Gao, Jinwu Chen, Hong State Key Laboratory of Automotive Simulation and Control Department of Control Science Jilin University Campus NanLing Changchun China School of Automotive Studies Tongji University Shanghai China College of Electronics and Information Engineering Tongji University Shanghai China

As an intermediary between the power grid and the electric vehicles (EVs) in the charging station, the charging pile promotes the exchange of electric energy between the power grid and EV group and also brings benefits to the charging station. It is difficult to accurately analyze the detailed energy trading behavior of a large number of charging piles with the power grid and EV group. Based on the theoretical framework of mean field game (MFG), this paper considers the battery degradation and charging efficiency taking into account the charging demand of EVs, the charging control problem of energy storage charging piles is proposed to achieve the goal of minimizing the cost of the charging station. In addition to modeling the interaction between the charging station and power grid and EVs as a finite-time dynamic game problem, optimal decentralized energy scheduling control strategies are formulated for charging piles, and by introducing the mean field term, the optimal pricing strategy for power trading between the charging station and EVs is obtained under the mean field equilibrium condition. An iterative algorithm is proposed to solve the charging control problem, and the rationality of the problem and the effectiveness of the algorithm are verified by numerical simulation. © 2023 Chinese Automatic control Society and John Wiley & Sons Australia, Ltd.

关键词： Piles

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