{"title":"Applicability of true voltage unbalance approximation formula for unbalance monitoring in LV networks with single-phase distributed generation","authors":"O. Gagrica, T. Uhl, P. Nguyen, J. Cobben","doi":"10.5220/0005783202860292","DOIUrl":"https://doi.org/10.5220/0005783202860292","url":null,"abstract":"In the hierarchy of power transmission and distribution systems, the three-phase LV distribution networks are most susceptible to voltage unbalance (VU). The main causes are large presence of randomly distributed single-phase loads and, following the latest trends, the increasing presence of single-phase distributed generators. Most widely accepted VU calculation is based on percentile ratio of negative and positive sequence voltage (voltage unbalance factor, VUF). Obtaining sequence voltages is a complex domain calculation and requires simultaneous sampling of three-phase voltages and angles. This is why the existing VU monitoring and mitigation solutions are dominantly three-phase. Without an additional three-phase aggregation device, there is an inherent gap in VU monitoring for single-phase loads and generators. In this paper, the data concentrators for a growing PV micro-inverter niche are identified as an infrastructure that could be exploited to somewhat close this gap. Due to potential technical limitations of PV data concentrators, a non-complex VUF approximation formula is tested as a “light” calculation alternative, by comparing it against conventional VUF. The comparison results are obtained from Monte Carlo load flow simulation for an unbalanced LV network.","PeriodicalId":448232,"journal":{"name":"2016 5th International Conference on Smart Cities and Green ICT Systems (SMARTGREENS)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126065959","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}
Raquel Pérez-delHoyo, Clara García-Mayor, H. Mora, V. Gilart-Iglesias, María Dolores Andújar-Montoya
{"title":"Making smart and accessible cities: An urban model based on the design of intelligent environments","authors":"Raquel Pérez-delHoyo, Clara García-Mayor, H. Mora, V. Gilart-Iglesias, María Dolores Andújar-Montoya","doi":"10.5220/0005798100630070","DOIUrl":"https://doi.org/10.5220/0005798100630070","url":null,"abstract":"Improving citizens' quality of life is one of the main goals of Smart Cities development. Accessibility of urban public spaces absolutely determines the living conditions for people. Technology provides new opportunities of autonomy for an increasing group of inhabitants with specific disabilities. This work proposes an urban model for improving accessibility based on the design of intelligent environments, with the automation of processes and functions in urban spaces, as a safe and effective way to promote inclusion and participation of all citizens. Finally, the most appropriate technologies to implement the model are discussed.","PeriodicalId":448232,"journal":{"name":"2016 5th International Conference on Smart Cities and Green ICT Systems (SMARTGREENS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129161242","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":"JouleSense: A simulation based platform for proactive feedback on building occupants' energy use","authors":"G. Lilis, Shubham Bansal, M. Kayal","doi":"10.5220/0005778602790285","DOIUrl":"https://doi.org/10.5220/0005778602790285","url":null,"abstract":"A significant amount of energy in the buildings can be saved by inducing efficient occupant behavior. The occupant's awareness tools that have been shown to be effective in achieving energy efficiency gains depend on various computational and estimation algorithms. This paper proposes an energy feedback scheme that relies on a model based, building thermal simulation in order to identify the areas for efficiency improvement. By leveraging the specific mathematical formulation of those models and a dedicated open-source solver, improved computational speed, reduced cost and enhanced interoperability is obtained. This combined with the integration into a building management system (BMS), permits real-time sensing and feedback. Unlike similar studies, this work's outcome allows the creation of the energy awareness tools that rely solely on validated thermal model simulation, thus increasing their accuracy and potential in the future smart buildings.","PeriodicalId":448232,"journal":{"name":"2016 5th International Conference on Smart Cities and Green ICT Systems (SMARTGREENS)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122171536","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":"Determination of parameters of adaptive law for the control of an off-grid power system","authors":"K. Suslov, S. Solodusha, D. Gerasimov","doi":"10.5220/0005759401290135","DOIUrl":"https://doi.org/10.5220/0005759401290135","url":null,"abstract":"The paper presents the results of a study of an off-grid electric power system that contains typical generation and load devices. The aim of the study is to develop an algorithm for selecting the optimal parameters of adaptive control law of the energy characteristics in the off-grid power system at the connection point of a varied load. To this end a simulation experiment was carried out and its results were used to numerically model the off-grid power system. The authors apply a known method of modelling the complex multi-parametric systems represented by the Volterra integro-power series. Standard approaches to the measurement of dynamic performance were applied to identify a transient response of the system.","PeriodicalId":448232,"journal":{"name":"2016 5th International Conference on Smart Cities and Green ICT Systems (SMARTGREENS)","volume":"97 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115064152","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":"Privacy-preserving and IoT-capable crowd analysis and detection of flow disturbances for enhancing public safety","authors":"H. Ziegler","doi":"10.5220/0005761300550062","DOIUrl":"https://doi.org/10.5220/0005761300550062","url":null,"abstract":"This paper describes a solution for monitoring and detection of crowds and analysis of density structures and movement characteristics, to enhance safety of citizens and security of critical infrastructures. The system leverages the Internet of Things concept and heterogenous, energy efficient, networked sensors, with support for wireless communication. Privacy protection, instant deployability and auto configuration are hereby underlying core objectives. The solution, which will be described, comprises two novel distributed crowd analysis algorithms, allowing on the one hand the localisation of critical areas within large crowds and on the other hand the recognition of counter streams, which can cause severe impacts on the crowd flow and movement velocity and which can transform crowding scenarios into threatening situations.","PeriodicalId":448232,"journal":{"name":"2016 5th International Conference on Smart Cities and Green ICT Systems (SMARTGREENS)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132044054","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}
B. Zaunbrecher, M. Stieneker, R. D. Doncker, M. Ziefle
{"title":"Does transmission technology influence acceptance of overhead power lines? An empirical study","authors":"B. Zaunbrecher, M. Stieneker, R. D. Doncker, M. Ziefle","doi":"10.5220/0005802801890200","DOIUrl":"https://doi.org/10.5220/0005802801890200","url":null,"abstract":"For the transmission of electricity across long distances, high voltage direct current (DC) transmission is discussed in Germany as an alternative to the currently used alternating current (AC) as it is more efficient for these distances. Changes in energy infrastructure are known to raise public awareness. However, little is known whether differences in transmission technology are relevant for the public and if so, to what extent. Two consecutive empirical studies were run in which acceptance towards transmission lines operated with DC in contrast to AC was explored. AC and DC power lines were not evaluated differently, yielding overall quite neutral ratings (Study 1) which might be due to a low information level in the public. A closer look (Study 2) showed that giving information on technical and design parameters of the transmission lines used for either AC or DC technology also did not change attitudes substantially. It is therefore concluded that transmission technology alone did not influence acceptance of power lines for the investigated sample. In addition, a need for more information on DC for high voltage transmission was identified. Further research is required on the influence of different power line layout of AC and DC on acceptance.","PeriodicalId":448232,"journal":{"name":"2016 5th International Conference on Smart Cities and Green ICT Systems (SMARTGREENS)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125238128","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":"Enhancing user comfort models for demand response solutions for domestic water heating systems","authors":"A. Belov, A. Vasenev, P. Havinga, N. Meratnia","doi":"10.5220/0005809702010212","DOIUrl":"https://doi.org/10.5220/0005809702010212","url":null,"abstract":"Demand Side Management (DSM) solutions for domestic Water Heaters (WHs) can assist consumers benefit financially by optimizing their energy usage. However, users' dissatisfaction caused by negative impact of DSM on their comfort may force them to reject the provided solutions. To facilitate DSM adoption in practice, there is a need to account for user comfort and to provide users with control strategies to balance energy consumption and their comfort. Comfort models used for WHs typically account for only variability of the temperature of running water. This paper extends such typical user comfort modeling approaches by considering the tap water flow as a possible variable during water activities. The model to relate tap flow and users' comfort is the first contribution of this paper. The second contribution of this paper is the flow rate control mechanism aligned with the user comfort model by means of the multi-objective optimization. Simulations for different water activities demonstrate that the control mechanism coupled with the suggested user interface can inform the user about multiple trade-offs between electric consumption and user flow discomfort, and thus can inform about possibilities to rationally save energy for water heating. A set of suggestions on how to organize the user interface is the third contribution of the paper.","PeriodicalId":448232,"journal":{"name":"2016 5th International Conference on Smart Cities and Green ICT Systems (SMARTGREENS)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117010094","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":"“How fear of crime affects needs for privacy & safety”: Acceptance of surveillance technologies in smart cities","authors":"J. Heek, K. Arning, M. Ziefle","doi":"10.5220/0005761900320043","DOIUrl":"https://doi.org/10.5220/0005761900320043","url":null,"abstract":"These days, surveillance technologies are a key component of smart and networked cities preventing or detecting crime and giving the residents a sense of safety. On the one hand, safety perceptions can be supported by adequate surveillance technologies (e.g., cameras), however on the other hand, the systematic use of surveillance technologies undermines individual privacy needs. In this empirical study, we explore users' perceptions on safety and privacy in the context of surveillance systems in urban environments. Using an online survey, 119 users were requested to indicate their acceptance regarding different types of surveillance technologies, differentiating perceived benefits and barriers as well as safety and privacy needs. Also, we investigate acceptance differences towards surveillance technologies at various locations (private and public). In this paper, we especially explore the impact of individual perceived crime threat on the acceptance of surveillance technologies and on the needs for privacy and safety.","PeriodicalId":448232,"journal":{"name":"2016 5th International Conference on Smart Cities and Green ICT Systems (SMARTGREENS)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122741982","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}
Lorenzo Bottaccioli, E. Patti, M. Grosso, G. Rasconà, A. Marotta, S. Rinaudo, A. Acquaviva, E. Macii
{"title":"Distributed software infrastructure for evaluating the integration of photovoltaic systems in urban districts","authors":"Lorenzo Bottaccioli, E. Patti, M. Grosso, G. Rasconà, A. Marotta, S. Rinaudo, A. Acquaviva, E. Macii","doi":"10.5220/0005879403570362","DOIUrl":"https://doi.org/10.5220/0005879403570362","url":null,"abstract":"Nowadays, the adoption of renewable energy sources distributed across the city is crucial for planning and developing the future Smart City. An accurate simulation and modelling of energy sources, such as Photovoltaic Panels (PV), is necessary to evaluate both economical and environmental benefits. With the growth of renewable sources in the city simulations of energy production became crucial for the DSO for evaluating retrofits or for network balancing events. In this paper, we present a software infrastructure for simulating the solar radiation and estimating the energy production of a district. The infrastructure simulates the PV production and evaluates the integration of such systems considering real electricity consumption data. In its core, the proposed solution models the behaviours of PV systems taking into account the digital surface of rooftops and sub-hourly meteorological data (e.g. solar radiation and temperature) to compute real-sky conditions. Then, such information is used to feed a model of the hardware components of PV systems to gain more accurate estimations of energy production in the district in real-sky conditions.","PeriodicalId":448232,"journal":{"name":"2016 5th International Conference on Smart Cities and Green ICT Systems (SMARTGREENS)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126795888","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":"Tailoring DDS to smart grids for improved communication and control","authors":"Alaa S. Alaerjan, Dae-Kyoo Kim","doi":"10.5220/0005891204330438","DOIUrl":"https://doi.org/10.5220/0005891204330438","url":null,"abstract":"Adopting new technologies in smart grid (SG) enables the improvement of reliable communication. A key factor for SG efficiency is reliable data exchange between different components and domains in the system. SG must allow remote and quick reaction for different events. This is not a trivial task especially with large scale power grids, which requires SG to have a reliable communication protocol. Data Distribution Service (DDS) is introduced as a data-centric middleware standard based on publish-subscribe protocol to address communication needs for distributed applications. DDS supports reliable data exchange between different components using various features such as quality-of-service (QoS). In this paper, we describe how DDS can be tailored to support SG to improve the communication of devices in SG. We first give an overview of DDS and discuss the benefits of applying it to the communication system in SG. We then describe communication requirements and constraints in SG. and discuss how DDS can be tailored to SG with respect to the requirements and constraints.","PeriodicalId":448232,"journal":{"name":"2016 5th International Conference on Smart Cities and Green ICT Systems (SMARTGREENS)","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131416459","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}