2018 AEIT International Annual Conference最新文献

{"title":"Enhancement of Slovenian Electricity Transmission System Resilience spurred by experience and new approach","authors":"Marko Hrast, K. Bakic, M. Babuder","doi":"10.23919/AEIT.2018.8577359","DOIUrl":"https://doi.org/10.23919/AEIT.2018.8577359","url":null,"abstract":"this paper aims to report primarily on new measures encompassed and introduced with respect to the relevant technical regulations put recently in force and on endeavors in immediate mostly technical modifications of assets imposed by lessons learned during past emergency events, as well. Emphasis was given particularly to enforcing of asset’s mechanical withstand capability based on scrutinized analyses of loads experienced during past emergency events. Increasing withstand of critical structures was selectively made. This paper gives an overview of various essential long-term activities and shows the level of new developments achieved after encountering bitter experiences during last decade. The paper deals also with assessing loading limits of selected essential network components aiming to reduce system vulnerability during emergencies hence increase its resilience. Majority of the experienced emergencies were produced by harsh weather impacts in the wintertime. There were many cases of OHL failures, which triggered in the aftermath scrutinized analyses aiming to determine the mechanical loads, encountered. Suitable refurbishing of OHL critical parts have been done respecting new standards. Aiming to allow for expedite restoring of OHL operating capability in emergencies the introduction of Emergency (modular) towers usage was selected and successfully implemented. Owing to the notorious fact, that OHLs’ and power transformer’s loading limits can be extended, several projects were launched to assess, evaluate and eventually up-grade the limit capacity implementing advanced monitoring equipment. Intensive support to asset management was done, such as maintenance optimization, state-of-the-art approach, condition monitoring of HV equipment, assets life cycle assessment and evaluation, etc. One of all-important steady processes remains to encourage the political decision makers to support the erection of new facilities notably OHL through simplifying and facilitating the spatial planning procedure (OHLs Right of Ways!) as well as mediating the social public-private dialogue. All these endeavors being in favor of upgrading the power system resilience.","PeriodicalId":413577,"journal":{"name":"2018 AEIT International Annual Conference","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131960706","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Assessment of the resilience of the electrical distribution grid: e-distribuzione approach","authors":"E. Amicarelli, L. Ferri, M. de Masi, A. Suich, G. Valtorta","doi":"10.23919/AEIT.2018.8577322","DOIUrl":"https://doi.org/10.23919/AEIT.2018.8577322","url":null,"abstract":"Extreme meteorological events, such as snowstorms, windstorms, floods and heat waves, have a high impact on the operation of electrical distribution and transmission grids, with disruptive effects affecting a huge number of customers. Moreover, the climate change due to global warming implies higher frequency of these critical events, also in unusual areas. This context pushed the Italian Regulatory Authority to solicit distribution and transmission system operators to plan grid resiliency improvements. To this purpose, e-distribuzione developed differentiated methodologies, described in this paper, in order to evaluate the resilience of its electrical grid versus extreme snowstorms, windstorms, tree fall and heat waves.","PeriodicalId":413577,"journal":{"name":"2018 AEIT International Annual Conference","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134356071","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Smart Grid Technology Lab – A Full-Scale Low Voltage Research Facility at TU Dortmund University","authors":"Alfio Spina, K. Rauma, C. Aldejohann, M. Holt, J. Maasmann, P. Berg, U. Häger, F. Rettberg, C. Rehtanz","doi":"10.23919/AEIT.2018.8577378","DOIUrl":"https://doi.org/10.23919/AEIT.2018.8577378","url":null,"abstract":"The paper presents a new smart grid research infrastructure of the Institute of Energy Systems, Energy Efficiency and Energy Economics (ie3) at TU Dortmund University. The research laboratory is focused on the development of future low voltage networks and electric mobility. The laboratory consists of a test network equipped with the most innovative technology required for low voltage network such as on-load tap changer transformer, energy storage systems, a photovoltaic system simulator, electric vehicle charging stations and experimental prototype devices. That facility provides not only a suitable infrastructure for academic and educational purpose but also a relevant facility for practical research together with industrial and manufacture partners. The overall structure and future plans of the laboratory together with few practical exemplary projects are described in this paper.","PeriodicalId":413577,"journal":{"name":"2018 AEIT International Annual Conference","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134540548","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"AEIT 2018 Index","authors":"","doi":"10.23919/aeit.2018.8577314","DOIUrl":"https://doi.org/10.23919/aeit.2018.8577314","url":null,"abstract":"","PeriodicalId":413577,"journal":{"name":"2018 AEIT International Annual Conference","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129425965","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The impact of MVDC links on distribution networks","authors":"Roberto Zuelli, R. Chiumeo, C. Gandolfi, A. Clerici, Salvatore Pugliese, S. Fratti, Maurizio Garocchio","doi":"10.23919/AEIT.2018.8577442","DOIUrl":"https://doi.org/10.23919/AEIT.2018.8577442","url":null,"abstract":"This paper addresses the meshing of distribution networks through MVDC (Medium Voltage Direct Current) links, based on VSCs (Voltage Source Converters), as a viable solution to manage critical network conditions, i.e. overloads or the connection of large loads to the existing distribution system. In this paper the impact of MVDC links on distribution networks was evaluated with OPF (Optimal Power Flow) analyses either for a test distribution network and a real case study provided by Unareti SpA (an Italian Distribution System Operator - DSO). For the real case study, fault studies to check the adequateness of the existing protection systems to the proposed meshed network configuration were performed.","PeriodicalId":413577,"journal":{"name":"2018 AEIT International Annual Conference","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117203976","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Life Cycle Assessment of a 132 kV Gas Insulated Switchgear substation using LCA methodology","authors":"A. G. Palumberi, M. Rebolini, P. Bonci, A. Giorgi, F. Grasso","doi":"10.23919/AEIT.2018.8577299","DOIUrl":"https://doi.org/10.23919/AEIT.2018.8577299","url":null,"abstract":"This paper is about the Life Cycle Assessment of a 132 kV hybrid Terna electrical substation realized with SF6 insulated switchgear bays and air insulated bars. References was made to ISO 14040:14044 [1–2]; the substation was studied in its overall form and each functional unit was then divided into assemblies representing the equipment. These last were analyzed based on the materials they are made of, evaluating their use, the weak points and the main characteristic of work, failure and maintenance. Based on the data provided by the companies producing the equipment and construction machinery and the data related to construction and maintenance of the system under evaluation, a total of 21124 processes were examined, with positive and negative contributions to the environment. The impact assessment model divides the emissions into 15 categories representing the 15 impact categories of interest for Terna. Then the phases of the life cycle of the entire substation were evaluated, identifying the most impacting. The examination of the “Global warming” category was examined to obtain the actual value of the kg of CO2 emitted during the substation’s life time. At the end of the evaluations, a constructive solution was provided that allows a lower incidence on the totality of impact categories studied and with interest in the “Global warming” category.","PeriodicalId":413577,"journal":{"name":"2018 AEIT International Annual Conference","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124428910","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Voltage Ripple Minimization in Modular Multilevel Converters using Modified Rotative PWM Scheme","authors":"D. Ronanki, S. Williamson","doi":"10.23919/AEIT.2018.8577275","DOIUrl":"https://doi.org/10.23919/AEIT.2018.8577275","url":null,"abstract":"Carrier-based pulse width modulation (PWM) schemes are usually employed in MMC fed variable speed drive (VSD) applications due to ease of implementation. Though this is the case, the phase-disposition PWM (PD-PWM) technique is a better choice as it is able to generate high-quality waveforms with a greater possibility of optimal switching. This technique suffers as it may provide uneven energy distribution among the submodules (SMs) and also non-uniform switch utilization. The use of carrier rotative PWM techniques as applied to MMC‘s will alleviate the problem of uneven energy distribution among the SMs, but the issue of non-uniform switch utilization still remains. A modified rotative PD-PWM (MRPD-PWM) technique is proposed in this paper, which retains the uniform energy distribution among the SMs while evenly distributing voltage distribution across SM capacitors. Moreover, this technique minimizes SM capacitor voltage ripple which can reduce the capacitance requirement in MMC-fed VSD applications. The performance of the proposed PWM scheme is compared with aforementioned PWM techniques for half-bridge submodule (HB-SM) based three-phase MMC in PLECS platform and verified experimentally under the same converter switching frequency.","PeriodicalId":413577,"journal":{"name":"2018 AEIT International Annual Conference","volume":"24 44","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120937158","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Impedance bonds:Analysis and Development","authors":"E. Fedeli, Giacomo Falaschi, Niccolò Bologna","doi":"10.23919/AEIT.2018.8577342","DOIUrl":"https://doi.org/10.23919/AEIT.2018.8577342","url":null,"abstract":"The presented study has as its objective the analysis of the Impedance Bonds (IB) placed in the isolated double rail track circuits of the automatic coded-current block system and provided measurements of current absorption in realistic environment with railway traffic. The conducted analysis aims to determine the need for technological upgrades of the different types of Impedance Bonds.","PeriodicalId":413577,"journal":{"name":"2018 AEIT International Annual Conference","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122776670","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Solving Uncertain Power Flow Problem by Affine Arithmetic","authors":"G. Coletta, A. Vaccaro, D. Villacci, A. Zollo","doi":"10.23919/AEIT.2018.8577403","DOIUrl":"https://doi.org/10.23919/AEIT.2018.8577403","url":null,"abstract":"Uncertainty management is becoming a very challenging tool in operation scheduling of networks interested by massive distributed generators' penetration. From this point of view, self-validated computing techniques are very useful tools, allowing to intrinsically track data uncertainty effects into power system operation procedures. In this field, the use of Affine Arithmetic has been demonstrated to be one of the most promising research direction, since it prevents the typical error explosion phenomena affecting the standard range arithmetic-based computing frameworks. Starting from these considerations, the aim of this paper is to investigate the Affine Arithmetic-based Power Flow problem, which, by mean of the uncertainty bounds characterization, can provide additional information to the system operators in their decision making processes. The methodology will be tested on the 30-bus IEEE test network and the results will be validated by application of traditional sampling-based techniques.","PeriodicalId":413577,"journal":{"name":"2018 AEIT International Annual Conference","volume":"290 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117305697","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dynamic modeling of the PrInCE Lab experimental microgrid","authors":"Andrea Vian, F. Bignucolo, R. Turri, A. Cagnano, E. De Tuglie","doi":"10.23919/AEIT.2018.8577427","DOIUrl":"https://doi.org/10.23919/AEIT.2018.8577427","url":null,"abstract":"In this paper, the dynamic model of a master-slave controlled microgrid suitable for transient stability assessments has been developed. The dynamic model has been derived for the PrInCE Lab experimental microgrid located at the Polytechnic University of Bari. This microgrid represents a hard test bed for dynamic stability studies since all its devices are interfaced through power converters, giving rise to an inertialess system. Dynamic models of the main microgrid energy sources have been developed within the DIgSILENT Power Factory software environment. Some ad-hoc experiments have been performed in order to fine tune the models' parameters and the microgrid model accuracy has been proven by several validation tests performed under different scenarios of load and generation.","PeriodicalId":413577,"journal":{"name":"2018 AEIT International Annual Conference","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124367608","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}