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Stochastic Linear Programming for Optimal Planning of Battery Storage Systems Under Unbalanced-uncertain Conditions

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Journal of Modern Power Systems and Clean Energy 2020年第5期8卷 971-980页

作者： reza hemmati Hasan Mehrjerdi Department of Electrical Engineering Kermanshah University of TechnologyKermanshahIran Qatar University DohaQatar

Battery energy storage system(BESS)has already been studied to deal with uncertain parameters of the electrical systems such as loads and renewable ***,the BESS have not been properly studied under unbalanced operation of power *** paper aims to study the modelling and operation of BESS under unbalanced-uncertain conditions in the power *** proposed model manages the BESS to optimize energy cost,deal with load uncertainties,and settle the unbalanced loading at the same *** three-phase unbalanced-uncertain loads are modelled and the BESSs are utilized to produce separate charging/discharging pattern on each phase to remove the unbalanced *** IEEE 69-bus grid is considered as case *** load uncertainty is developed by Gaussian probability function and the stochastic programming is adopted to tackle the *** model is formulated as mixed-integer linear programming and solved by GAMS/*** results demonstrate that the model is able to deal with the unbalanced-uncertain conditions at the same *** model also minimizes the operation cost and satisfies all security constraints of power grid.

关键词： Battery energy storage system(BESS) singlephase storage planning unbalanced loading uncertainty

A multi-functional dynamic state estimator for error validation:measurement and parameter errors and sudden load changes

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Frontiers of Information Technology & Electronic Engineering 2016年第11期17卷 1218-1227页

作者： Mehdi AHMADI JIRDEHI reza hemmati Vahid ABBASI Hedayat SABOORI Department of Electrical Engineering Kermanshah University of Technology

We propose a new and efficient algorithm to detect, identify, and correct measurement errors and branch parameter errors of power systems. A dynamic state estimation algorithm is used based on the Kalman filter theory. The proposed algorithm also successfully detects and identifies sudden load changes in power systems. The method uses three normalized vectors to process errors at each sampling time: normalized measurement residual, normalized Lagrange multiplier, and normalized innovation vector. An IEEE 14-bus test system was used to verify and demonstrate the effectiveness of the proposed method. Numerical results are presented and discussed to show the accuracy of the method.

关键词：动态州的评价 Kalman 过滤器测量错误布朗奇参数错误突然的负担变化 TM921

Cobalt supported on CNTs-covered γ-and nano-structured alumina catalysts utilized for wax selective Fischer-Tropsch synthesis

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Journal of Natural Gas Chemistry 2012年第6期21卷 713-721页

作者： Mohammad reza hemmati Mohammad Kazemeini Farhad Khorasheh Jamshid Zarkesh Alimorad Rashidi Sharif University of Technology(SUT) Department of Chemical & Petroleum Engineering Research Institute of Petroleum Industry(RIPI)

Cobalt supported on carbon nanotubes （CNTs）-covered alumina has been recently developed and successfully utilized as a catalyst in Fischer-Tropsch synthesis （FTS）. Problems associated with shaping of Co/CNTs into extrudates or pellets as well as catalyst attrition rendered these materials unfavorable for industrial applications. In this investigation regular γ- and nano-structured （N-S） alumina as well as CNTs-covered regular γ- and N-S-alumina supports were impregnated by cobalt nitrate solution to make new cobalt-based catalysts which were also promoted by Ru. The catalysts were characterized and tested in a micro reactor to evaluate their applicability in FTS. γ-Al2O3 was prepared by calcination of bohemite and N-S-Al2O3 was prepared by sol-gel method using aluminum chloride as starting material. Catalyst evaluations indicated that N-S-Al2O3 was superior to regular γ-Al2O3 and that CNTs-covered alumina supports were favored over non-covered ones in terms of activity and heavy hydrocarbon selectivity. These were justified by porosimetric characteristics of the catalysts and existence of CNTs points of view. CNTs-covered catalysts also showed higher wax selectivity and better resistance to deactivation. Furthermore, TPR analysis indicated that the cobalt aluminate phase, which is responsible for the permanent deactivation of alumina supported Co-based catalysts, did not form on alumina supported Co-based catalysts covered with CNTs due to weaker interactions between cobalt and alumina.

关键词： Fischer-Tropsch synthesis nano-structured alumina gamma alumina carbon nanotubes catalyst deactivation

Stochastic Transmission Expansion Planning Incorporating Reliability Solved Using SFLA Meta-heuristic Optimization Technique

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CSEE Journal of Power and Energy Systems 2016年第2期2卷 79-86页

作者： Saedeh Alaee Rahmat-Allah Hooshmand reza hemmati Department of Electrical Engineering University of IsfahanIsfahanIran Department of Electrical Engineering Kermanshah University of TechnologyKermanshahIran

This paper addresses stochastic transmission expansion planning(TEP)under uncertain load conditions when reliability is taken into *** main objective of the proposed TEP is to minimize the total planning cost by denoting the place,number,and type of new transmission lines subject to safe operation *** this paper,the objective function consists of two terms,namely,investment cost(IC)of new lines and reliability *** reliability cost is incorporated as the loss of load cost(LOLC).Network uncertainties in the form of loads are molded as Gaussian probability distribution function(PDF).Monte-Carlo simulation is applied to tackle the *** proposed stochastic TEP is expressed as constrained optimization planning and solved using shuffled frog leaping algorithm(SFLA)SFLA is compared to other optimization techniques such as particle swarm optimization(PSO)and genetic algorithms(GA).Finally,stochastic planning(planning including uncertainty)and deterministic planning(planning excluding uncertainty)are compared to demonstrate impacts of uncertainty on the *** results in different cases and scenarios verify the effectiveness and viability of the proposed stochastic TEP,including uncertainty and reliability.

关键词： Reliability shuffled frog leaping algorithm stochastic planning transmission expansion planning uncertainty

Semi-automated carotid lumen segmentation in computed tomography angiography images

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The Journal of Biomedical Research 2017年第6期31卷 548-558页

作者： Hamid reza hemmati Mahdi Alizadeh Alireza Kamali-Asl Shapour Shirani Radiation Medicine Engineering Department Shahid Beheshti UniversityTehran ***Iran Department of Neurosurgery Thomas Jefferson University HospitalPhiladelphiaPAl9107USA Department of Radiology Thomas Jefferson University HospitalPhiladelphiaPA 19107USA Department of Imaging Tehran University of Medical ScienceTehran ***Iran

Carotid artery stenosis causes narrowing of carotid lumens and may lead to brain infarction. The purpose of this study was to develop a semi-automated method of segmenting vessel walls, surrounding tissues, and more importantly, the carotid artery lumen by contrast computed tomography angiography（CTA） images and to define the severity of stenosis and present a three-dimensional model of the carotid for visual inspection. In vivo contrast CTA images of 14 patients（7 normal subjects and 7 patients undergoing endarterectomy） were analyzed using a multi-step segmentation algorithm. This method uses graph cut followed by watershed and Hessian based shortest path method in order to extract lumen boundary correctly without being corrupted in the presence of surrounding *** measurements of the proposed method were compared with those of manual delineation by independent board-certified radiologists. The results were quantitatively evaluated using spatial overlap surface distance indices. A slightly strong match was shown in terms of dice similarity coefficient（DSC） = 0.87±0.08; mean surface distance（Dmsd）= 0.32±0.32; root mean squared surface distance（Drmssd） = 0.49±0.54 and maximum surface distance（Dmax）=2.14±2.08 between manual and automated segmentation of common, internal and external carotid arteries, carotid bifurcation and stenotic artery, respectively. Quantitative measurements showed that the proposed method has high potential to segment the carotid lumen and is robust to the changes of the lumen diameter and the shape of the stenosis area at the bifurcation site. The proposed method for CTA images provides a fast and reliable tool to quantify the severity of carotid artery stenosis.

关键词： computed tomography angiography carotid atherosclerosis centerline extraction segmentation

Introducing a Novel Approach for Oil-Oil Correlation based on Asphaltene Structure: X-ray Diffraction

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Acta Geologica Sinica(English Edition) 2021年第6期95卷 2100-2119页

作者： Zahra SADEGHTABAGHI Ahmad reza RABBANI Abdolhossein hemmati-SARAPARDEH Department of Petroleum Engineering Amirkabir University of TechnologyTehranIran Department of Petroleum Engineering Shahid Bahonar University of KermanKermanIran Institute of Research and Development Duy Tan UniversityDa Nang 550000Vietnam Faculty of Environmental and Chemical Engineering Duy Tan UniversityDa Nang 550000Vietnam

Asphaltenes have always been an attractive subject for ***,the application of this fraction of the geochemical field has only been studied in a limited *** other words,despite many studies on asphaltene structure,the application of asphaltene structures in organic geochemistry has not so far been ***-oil correlation is a wellknown concept in geochemical studies and plays a vital role in basin modeling and the reconstruction of the burial history of basin sediments,as well as accurate characterization of the relevant petroleum *** study aims to propose the Xray diffraction(XRD)technique as a novel method for oil-oil correlation and investigate its reliability and accuracy for different crude *** this end,13 crude oil samples from the Iranian sector of the Persian Gulf region,which had previously been correlated by traditional geochemical tools such as biomarker ratios and isotope values,in four distinct genetic groups,were selected and their asphaltene fractions analyzed by two prevalent methods of XRD and Fouriertransform infrared spectroscopy(FTIR).For oil-oil correlation assessment,various cross-plots,as well as principal component analysis(PCA),were conducted,based on the structural parameters of the studied *** results indicate that asphaltene structural parameters can also be used for oil-oil correlation purposes,their results being completely in accord with the previous *** average values of distance between saturated portions(d_(r))and the distance between two aromatic layers(d_(m))of asphaltene molecules belonging to the studied oil samples are 4.69Aand 3.54A,***,the average diameter of the aromatic sheets(L_(a)),the height of the clusters(L_(c)),the number of carbons per aromatic unit(C_(au)),the number of aromatic rings per layer(R_(a)),the number of sheets in the cluster(M_(e))and aromaticity(f_(a))values of these asphaltene samples are 10.09A,34.04A,17.42A,3.78A,10.6

关键词： oil-oil correlation petroleum characterization X-ray diffraction Fourier-transform infrared spectroscopy decision tree classification

Effects of herbal extracts and compounds and pharmacological agents on pulmonary fibrosis in animal models:a review

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Journal of Integrative Medicine 2017年第6期15卷 433-441页

作者： hoda mojiri-forushani ali asghar hemmati mohammad amin dehghani ali reza malayeri hossein hassan pour abadan school of medical sciences Abadan ***Iran department of pharmacology the school of pharmacy and medicinal plant research centerahvaz jundishapur university of medical sciencesAhvaz ***Iran department of toxicology school of pharmacyahvaz jundishapur university of medical sciencesAhvaz ***Iran

Pulmonary fibrosis, a chronic inflammatory disease that occurs mainly in older adults, is a serious health threat with few effective treatment options. The etiological aspects of pulmonary fibrosis remain unknown, though some factors such as cigarette smoking, viral infections, surfactant protein polymorphisms, and chronic or high doses use of certain drugs are considered to be risk factors for the progression of pulmonary fibrosis. No standard treatments have been introduced in clinic yet. Although glucocorticoids and antioxidant drugs have been administered, the severe and broad-spectrum adverse effects of glucocorticoids limit their use. Efforts to identify novel therapeutic agents with improved safety profiles are therefore ongoing. In this review, the authors have described the effects of herbal extracts and compounds and certain pharmacological agents on pulmonary fibrosis in animal models. These effects indicate that herbs are a promising source of compounds that can play pivotal roles in the treatment of lung fibrosis.

关键词： pulmonary fibrosis herbal medicine pharmacological agents bleomycin paraquat

Sono-Guided Endostripping: An Appropriate Alternative for Endovascular Varice Procedures

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Surgical Science 2014年第12期5卷 526-532页

作者： Hossein hemmati Mohammad reza Asgary Mohammad Sadegh Esmaeli Delshad Davoud Mohammadi Sina Montazeri Cyrus Emir Alavi Vascular Surgery and Dialysis Research Center Guilan University of Medical Sciences Rasht Iran

Objective: This article is aimed at introducing Sono-Guided Endostripping Technique of the Great Saphenous vein and comparing it with radiofrequency ablation in 104 patients. Methods: 52 patients underwent Sono-Guided Endostripping and 52 patients had radiofrequency ablation with Celon Olympus device. They were followed for 3 months with physical examination and Doppler Sonography for possible complications and recanalization. Results: Recanalization rate was 11.5% in RFAs while it was 0.0% in the Endostripping group. There were no significant differences for other complications (hematoma, DVT, paresthesia) but pain, which had 1.21 and 3.15 VAS scores for RFA and Endostripping groups, respectively. Recanalization rate was more in RFA comparing with the Endostripping group (11.5% vs. 0.0%,?P?< 0.013). RFA was more expensive. Conclusion: Sono-Guided Endostripping is a safe and cost-effective method (due to no need for using RFA probe);however, the patient must be admitted to the hospital and take appropriate anesthesia. Cosmetic result of the technique is fairly comparable with RFA scars in the thigh and leg.

关键词： Catheter Ablation Saphenous Vein Surgical Procedures Varicose Veins-Surgery

Ultrasound Guided Port-A-Cath Implantation

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Surgical Science 2014年第4期5卷 159-163页

作者： Hossein hemmati Mohammad Sadegh Esmaeli Delshad Mohammad reza Barzegar Ali Babaei Jandaghi Behruz Najafi Mohammad reza Asgary Acieh Es-Haghi Departement of Radiology Poursina Hospital Guilan University of Medical Sciences Rasht Iran Division of Oncology Department of Internal Medicine Razi Hospital Guilan University of Medical Sciences Rasht Iran Division of Vascular Surgery Department of Surgery Razi Hospital Guilan University of Medical SciencesRasht Iran

Purpose: The use of port catheters is well accepted in the management of patients with malignancy. In this study, we compare the technical success and the complication rates of ultrasound guided Port-A-Cath implantation with doing this procedure by using the anatomical landmark method. Methods: In a retrospective study, from 2006 to 2009, medical files of 104 patients who had undergone Port-A-Cath implantation were reviewed. The indication for port catheter implantation was malignancy in all cases. Among our patients, Port-A-Cath implantation was done in 63 patients by using landmark method and in 41 patients by guidance of ultrasound. All patients had been observed for complications including pain, port infection, and port thrombus, thrombus of central veins, skin necrosis, and success in using of Port-A-Cath for at least one month following the procedure, in the vascular clinic. Results: in landmark method group, 2 catheters were non-functional just after placement (3.2%) while all Port-A-Caths in ultrasound-guided group were functional. Ten patients (15.9%) in land mark group and 1 patient (2.4%) in ultrasound-guided group were complicated. The difference between complication rate in anatomic landmarks method and ultrasound-guided method was statistically significant (p There was no significant difference in two groups in duration of port placement (p < 0.345), age (p < 0.444), site of port placement (p < 0.244) or type of malignancy (p < 0.18). Conclusion: Considering high rate of success and low complications in placement of Port-A-Cath with ultrasound guidance, this method is superior to the land mark method in patients with malignancy.

关键词： Ultrasound Guided Port-A-Cath Implantation