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Optimization Method of Shared Energy Storage Configuration on Source-Grid-Load Side of Power System

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Optimization Method of Shared Energy Storage Configuration o...

2023 International Conference on Power System Technology, PowerCon 2023

作者： Li, Cuiping Liu, Yang Zhang, Tianxun Zhao, Zhiqiang Liu, Haojun Zhu, Xingxu Li, Zhi An, Chenyu Li, Junhui Northeast Electric Power University Key Laboratory of Modern Power System Simulation and Control & Renewable Energy Technology Ministry of Education Jilin132012 China Beijing Technology and Business University Beijing China State Grid Hami Power Supply Company Xinjiang Uygur Autonomous Region Hami Hami839000 China

ISBN: (纸本)9798350300222

With the rise of the application of sharing economy in various fields of power system, As a typical application of shared economy in the field of energy storage, the optimal allocation of shared energy storage on the source-network-load side has been a great topic. The problem dealt with in this paper is the configuration result of the source-grid-load energy storage system under the same control strategy. This paper designs an optimization method for the source-network-load side configuration of generalized shared energy storage in regional power grid: Firstly, according to the extensional usage scenario and demand of energy storage, the alternative set of shared energy storage configuration is constructed. Secondly, based on the profit model of shared energy storage, a power system source-network-load optimization scheduling strategy is proposed. Finally, a numerical example is carried out to prove the feasibility and efficacy of the suggested method. © 2023 IEEE.

关键词： Profitability

Analysis of the Drivers of Premature Death and Life Expectancy Reduction Associated with Global Pm2.5 Pollution

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SSRN 2023年

作者： Wu, Dongdong State Key Joint Laboratory of Environmental Simulation and Pollution Control School of Environment Beijing Normal University Xinjiekouwai Street No. 19 Beijing100875 China

Quantitative assessment of the health risks due to PM2.5 is a global concern. This study systematically assessed the impact of PM2.5 on global and regional premature death and per capita life expectancy reduction (LER) from 1995-2019. The number of premature death due to PM2.5 increased from 3.25 million to 4.56 million during the study period;while the per capita life expectancy reduction increased from 0.91 to 1.03 years before decreasing to 0.95 years. The number of deaths and LER were declining in Europe and North America, while the opposite was observed in Asian and African countries. Population and age structure were pulling factors for premature death, with population contributing more to African countries (90%), while other countries were more susceptible to age structure;PM2.5 concentration was a puller and then a suppressor for both premature death and LER, and the medical level was always a suppressor. All countries should take action and cooperate to reduce the harmful effects of PM2.5 pollution on humans. (Image Presented) © 2023, The Authors. All rights reserved.

关键词： Health risks

Enhanced activation of peroxydisulfate by strontium modified BiFeO3 perovskite for ciprofloxacin degradation

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Journal of Environmental Sciences 2021年第1期33卷 249-259页

作者： Caicai Wang Shengwang Gao Jianchao Zhu Xunfeng Xia Mingxin Wang Yanna Xiong State Key Laboratory of Enuironmental Criteria and Risk Assessment Chinese Research Academy of Environmental SciencesBeijing 100012China State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution Chinese Research Academy of Environmental SciencesBeijing 100012China School of Environmental and Safety Engineering Changzhou UniversityChangzhou 213164China Solid Waste and Chemicals Management Center Ministry of Ecology and EnvironmentBeijing 100029China

A series of Sr-doped BiFeO3 perovskites(Bi1-xSrxFeO3,BSFO)fabricated via sol-gel method was applied as peroxydisulfate(PDS)activator for ciprofloxacin(CIP)*** technologies were used to characterize the morphology and physicochemical features of prepared BSFO samples and the results indicated that Sr was successfully inserted into the perovskites *** catalytic performance of BiFeO3 was significantly boosted by strontium ***,Bi0.9Sr0.1FeO3(0.1 BSFO)exhibited the highest catalytic performance for PDS activation to remove CIP,where 95%of CIP(10 mg/L)could be degraded with the addition of 1 g/L 0.1 BSFO and 1 mmol/L PDS within 60 ***,0.1 BSFO displayed high reusability and stability with lower metal *** acidic condition was preferred to neutral and alkaline conditions in 0.1 BSFO/PDS *** boosted catalytic performance can be interpreted as the lower oxidation state of Fe and the existence of affluent oxygen vacancies generated by Sr doping,that induced the formation of singlet oxygen(^1O_(2))which was confirmed as the dominant reactive species by radical scavenging studies and electron spin resonance(ESR)*** catalytic oxidation mechanism related to major ^1O_(2) and minor free radicals was *** study opens a new avenue to develop effective A-site modified perovskite and expands their application for PDS activation in wastewater remediation.

关键词： Perovskite Peroxydisulfate Heterogeneous catalysis Singlet oxygen Ciprofloxacin

Data-driven Transient Stability Assessment Model Considering Network Topology Changes via Mahalanobis Kernel Regression and Ensemble Learning

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Journal of Modern Power Systems and Clean Energy 2020年第6期8卷 1080-1091页

作者： Xianzhuang Liu Xiaohua Zhang Lei Chen Fei Xu Changyou Feng State Grid Corporation of China State Grid Jibei Electric Power Company the State Key Laboratory of Control and Simulation of Power System and Generation Equipment Department of Electrical EngineeringTsinghua University

Transient stability assessment(TSA)is of great importance in power system operation and *** of the usual tasks in TSA is to estimate the critical clearing time(CCT)of a given fault under the given network topology and pre-fault power ***-driven methods try to obtain models describing the mapping between these factors and the CCT from a large number of ***,the influence of network topology on CCT is hard to be analyzed and is often ignored,which makes the models inaccurate and *** this paper,a novel data-driven TSA model combining Mahalanobis kernel regression and ensemble learning is proposed to deal with the *** model is a weighted sum of several *** sub-model only uses the data of one topology to construct a kernel *** weights are determined by both the topological similarity and numerical similarity between the *** similarities are decided by the parameters in Mahalanobis distance,and the parameters are to be *** reduce the model complexity,sub-models within the same topology category share the same *** estimating CCT,the model uses not only the sub-model which the sample topology belongs to,but also other ***,it avoids the problem that there may be too few data under some *** also efficiently utilizes information of data under all the ***,its decision-making process is clear and understandable,and an effective training algorithm is also *** results on both the IEEE 10-machine 39-bus and a real system verify the effectiveness of the proposed model.

关键词： Transient stability assessment critical clearing time network topology change Mahalanobis kernel regression ensemble learning data-driven

Organosulfur Compounds in Ambient Fine Particulate Matter in an Urban Region: Findings of a Nontargeted Approach

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SSRN 2023年

作者： Li, Ailin Shi, Xiaodi Qiu, Xinghua Wei, Gaoyuan Zheng, Yan Chen, Qi Chen, Shiyi Hu, Min Zhu, Tong State Key Joint Laboratory for Environmental Simulation and Pollution Control College of Environmental Sciences and Engineering Center for Environment and Health Peking University Beijing100871 China

Organosulfur compounds (OSCs) are important components of fine particulate matter (PM2.5);however, little information is available on OSCs in urban regions due to their chemical complexity. In this study, we developed a nontargeted approach based on gas chromatography and high-resolution mass spectrometry (GC-HRMS) to screen OSCs in PM2.5 of urban Beijing. Seventy-six OSCs were found through mass difference of sulfur isotopes and characteristic sulfur-containing fragments. Six species were confirmed as aromatic sulfonates by authentic standards. Most OSCs showed higher levels in the heating season, presumably because of the intensive emission especially from coal combustion. While certain species, with 2-sulfobenzoic acid as the representative, were more abundant in the non-heating season. Such species were significantly correlated with ozone and aerosol liquid water content, implying an oxidation-involved aqueous-phase formation in the atmosphere. The predominance of the 2-substitution product over its isomer of 3- or 4-sulfobenzoic acid suggests a more plausible mechanism of ring-opening of naphthalene followed by sulfonation, with atmospheric reactivity indicated by ozone and temperature as the determining factor. This study provided not only a nontargeted approach for OSCs in ambient PM2.5, but also field evidence on their secondary formation proposed in previous simulation studies. © 2023, The Authors. All rights reserved.

关键词： Naphthalene

Periodate-based advanced oxidation processes: A review focusing on the overlooked role of high-valent iron and manganese species

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Chemosphere 2023年第1期337卷 139442页

作者： Yang, Bowen Ma, Qiang Hao, Jiming Huang, Jin Wang, Qingyuan Wang, Dunqiu Zhang, Jun School of Architecture and Civil Engineering Chengdu University Chengdu610106 China Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology Guilin University of Technology Guilin541004 China State Key Joint Laboratory of Environment Simulation and Pollution Control School of Environment Tsinghua University Beijing100084 China

Periodate-based advanced oxidation processes (AOPs) have received mounting attention in scientific research in the past two decades due to their fair oxidizing capability for satisfactory decontamination performance. Unlike iodyl (IO3•) and hydroxyl (•OH) radicals are widely recognized as the predominant species generated from periodate activation, the role of high-valent metal as a dominant reactive oxidant has been proposed recently. Although several excellent reviews concerning periodate-based AOPs have been reported, there are still prevalent knowledge roadblocks to high-valent metals' formation and reaction mechanisms. Therefore, this work aims to provide a comprehensive overview of high-valent metals, especially concerning the identification methods (e.g., direct and indirect strategies), formation mechanisms (e.g., formation pathways and interpretation based on density functional theory calculation), reaction mechanisms (e.g., nucleophilic attack, electron transfer, oxygen-atom transfer, electrophilic addition, and hydride and hydrogen-atom transfer), and reactivity performance (e.g., chemical properties, influencing factors, and practical applications). Furthermore, points for critical thinking and further prospects for high-valent metal-mediated oxidation processes are suggested, emphasizing the need for parallel efforts to enhance the stability and reproducibility of high-valent metal-mediated oxidation processes in real world applications. © 2023 Elsevier Ltd

关键词： Atoms

Identification of key Anthropogenic Voc Sources controlling O3 and Soa Formation in Fuzhou, China, by Combining Multi-Site Observation and Emission Inventory

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SSRN 2023年

作者： Shi, Yuqi Simayi, Maimaiti Ren, Jie Zeng, Limin Yu, Xuena Xi, Ziyan Xie, Shaodong College of Environmental Sciences and Engineering State Key Joint Laboratory of Environmental Simulation and Pollution Control Peking University Beijing100871 China Peking University China

To evaluate the volatile organic compounds (VOCs) pollution characteristics and identify their key sources in Fuzhou, China, which is one of the central cities in the economic zone on the west side of the Taiwan Straits, ambient air collection and measurement were conducted at nine sampling sites covering the urban district of Fuzhou and its surrounding area from December 2018 to October 2019. Meanwhile, a county-level anthropogenic VOC emission inventory was established by the "bottom-up" method for 2019. Then, the comparison and combination of the results of ambient observation and emission inventory were made in speciated emissions, spatial variations, source structures, and secondary pollutants formation contributions. The annual average mixing ratios of VOCs in Fuzhou were 41.17 ppbv, which is mainly dominated by OVOCs (45.6%) and alkanes (24.10%). The ambient VOCs in Fuzhou have distinct spatiotemporal characteristics, with a higher concentration in the northwest and southeast of the urban district and the highest concentration in April. The spatial distribution of VOCs estimated by the emission inventory was in correspondence with ambient observation. The source structures resulting from the positive matrix factorization (PMF) model were also comparable with that of emission inventory. Both methods showed that the VOCs emitted from mobile vehicles contributed the most to ozone (O3) formation in Fuzhou, whereas the industry had the most prominent impact on secondary organic aerosol (SOA) formation. Based on the verified emission inventory,passenger cars, synthetic fibers manufacturing, furniture coating, and paint & related manufacturing were key VOC sources that should be preferentially controlled to effectively improve air quality in Fuzhou. Moreover, it is necessary to update local source profiles of aromatics and halocarbons by field measurements for more targeted VOC emission management. © 2023, The Authors. All rights reserved.

关键词： Volatile organic compounds

Simulating Micropollutant Abatement During Cobalt Mediated Peroxymonosulfate Process by Probe-Based Kinetic Models

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SSRN 2022年

作者： Gao, Lingwei Guo, Yang Huang, Jun Wang, Bin Deng, Shubo Yu, Gang Wang, Yujue School of Environment Beijing Key Laboratory for Emerging Organic Contaminants Control State Key Joint Laboratory of Environmental Simulation and Pollution Control Tsinghua University Beijing100084 China

Prediction of micropollutant abatement during advanced oxidation processes by modelling can provide valuable information to optimize the process for efficient water treatment. In this study, a probe-based kinetic model was developed to simulate micropollutant abatement during water treatment by a cobalt-mediated peroxymonosulfate (Co/PMS) process. Eight micropollutants (atrazine, primidone, sulfisoxazole, sulfamethoxypyridazine, gemfibrozil, chloramphenicol, p -chlorobenzoic acid, and perfluorooctanoic acid) were spiked in various water matrices (synthetic water and real surface water), which were then treated by the Co/PMS process. By following the decay of PMS, atrazine, and primidone (as sulfate and hydroxyl radical ( [[EQUATION]] and • OH) probes) [[EQUATION]] during the process, the exposures of PMS, [[EQUATION]] and • OH were calculated using the model. Then, based on the determined exposures, the abatement efficiencies of the other micropollutants could be reasonably predicted with the model. The results indicate that by using a couple of probes to measure the [[EQUATION]] and • OH exposures, the model can be used for the generalized prediction of the abatement of various micropollutants during water treatment by the Co/PMS process. In addition, modelling results show that for a given water matrix, the ratios of [[EQUATION]] and • OH concentrations to PMS concentrations (R SP and R HP ) are almost constant during the Co/PMS process. This finding allows the transient concentrations of [[EQUATION]] and • OH to be quantified based on the constant R SP and R HP ratios and the PMS concentrations observed during the process. The results of this study suggest that the probe-based kinetic models can provide a useful tool to characterize the persulfate-based process and to predict the abatement efficiencies of various micropollutants during water treatment. © 2022, The Authors. All rights reserved.

关键词： Kinetic parameters

Inactivation of Antibiotic Resistant Bacteria and Degradation of Plasmid-Encoded Antibiotic Resistance Genes in Groundwater by Conventional Ozonation and Electro-Peroxone Process

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SSRN 2022年

作者： Zheng, Quan Zhang, Yinqiao Zhang, Qianxin Wang, Yujue Yu, Gang School of Environment Beijing Key Laboratory for Emerging Organic Contaminants Control State Key Joint Laboratory of Environmental Simulation and Pollution Control Tsinghua University Beijing100084 China

The electro-peroxone (EP) process is an emerging advanced oxidation process that combines ozonation with electrochemical hydrogen peroxide (H 2 O 2 ) production to drive the peroxone (O 3 /H 2 O 2 ) process for water treatment. Prior studies have shown that the EP process can considerably enhance ozone-resistant pollutant abatement and mitigate bromate formation during water treatment compared to conventional ozonation. This study further compared the inactivation of antibiotic resistant bacteria (ARB) and the degradation of plasmid-encoded antibiotic resistance genes (ARGs) during groundwater treatment by conventional ozonation and the EP process. Due to the enhanced transformation of ozone (O 3 ) to hydroxyl radicals (•OH) by electro-generated H 2 O 2 , higher •OH exposures, but lower O 3 exposures were obtained during the EP process than conventional ozonation. The inverse change of O 3 and •OH exposures decreases the efficiency of ARB inactivation and ARG degradation moderately during the EP process compared to conventional ozonation. These results suggest that regarding ARB inactivation and ARG degradation, the decrease of O 3 exposures cannot be fully compensated by the increase of •OH exposures during the EP process. However, due to the increase of •OH exposure, plasmid DNA was more thoroughly cleaved to shorter fragments during the EP process than conventional ozonation, which may decrease the risks of natural transformation of ARGs in the treated water. The results of this study highlight that the influence of the EP process on ARB and ARGs inactivation needs to be taken into account when implementing this process to enhance micropollutant abatement in water treatment. © 2022, The Authors. All rights reserved.

关键词： Ozone