Pub Date : 2017-07-01DOI: 10.1109/EUROCON.2017.8011251
T. Ivănoaica, M. Ciubancan, M. Barbulescu, A. Nicolin
We report a series of preliminary results on the efficiency of tape-storage solutions that are relevant for large-scale experimental facilities such as the Nuclear Physics pillar of the Extreme Light Infrastructure (ELI-NP). Our investigations are focused on the efficiency of tape data access scenarios, in particular a comparison between the Linear Tape File System and native Linux tools, and the influence of data properties on reading efficiency.
{"title":"Exploring long-term tape-storage solutions","authors":"T. Ivănoaica, M. Ciubancan, M. Barbulescu, A. Nicolin","doi":"10.1109/EUROCON.2017.8011251","DOIUrl":"https://doi.org/10.1109/EUROCON.2017.8011251","url":null,"abstract":"We report a series of preliminary results on the efficiency of tape-storage solutions that are relevant for large-scale experimental facilities such as the Nuclear Physics pillar of the Extreme Light Infrastructure (ELI-NP). Our investigations are focused on the efficiency of tape data access scenarios, in particular a comparison between the Linear Tape File System and native Linux tools, and the influence of data properties on reading efficiency.","PeriodicalId":114100,"journal":{"name":"IEEE EUROCON 2017 -17th International Conference on Smart Technologies","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122773965","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}
Pub Date : 2017-07-01DOI: 10.1109/EUROCON.2017.8011158
Uyoata Uyoata, M. Dlodlo
Device to device(D2D) communication exploits the proximity between mobile devices to allow direct communication. Doing so offers advantages which include less energy consumption, hop gain, reduced load on the base station among others. For instances where the channel between the D2D devices does not allow for efficient direct communication, a suitably selected idle mobile device can act as a relay to forward intended signals. When the relaying mobile is in motion, channel uncertainties may arise and so constitute channel estimation errors at the transmitter and receiver pairs affecting the relay selection process. Recently matching theory has been studied as an approach for allocating resources in wireless communication system. In this paper joint power allocation and relay selection is considered with focus on comparing two matching theory schemes namely the Hungarian assignment(HA) approach and the stable matching(SM)approach. Full duplex communication with multiple D2D user pairs are considered in this work. The relay selection problem is formulated as an optimization problem which is decomposed into power allocation and actual relay selection. We formulate the relay selection problem as a one to one weighted bipartite matching. Both HA and SM approaches outperform random selection by offering reduced total transmit power. Whereas the performance of HA and SM are mostly similar, with respect to channel uncertainty errors the HA algorithm is more robust against errors than SM.
{"title":"Joint power allocation and relay selection for relay assisted D2D communication with channel uncertainties","authors":"Uyoata Uyoata, M. Dlodlo","doi":"10.1109/EUROCON.2017.8011158","DOIUrl":"https://doi.org/10.1109/EUROCON.2017.8011158","url":null,"abstract":"Device to device(D2D) communication exploits the proximity between mobile devices to allow direct communication. Doing so offers advantages which include less energy consumption, hop gain, reduced load on the base station among others. For instances where the channel between the D2D devices does not allow for efficient direct communication, a suitably selected idle mobile device can act as a relay to forward intended signals. When the relaying mobile is in motion, channel uncertainties may arise and so constitute channel estimation errors at the transmitter and receiver pairs affecting the relay selection process. Recently matching theory has been studied as an approach for allocating resources in wireless communication system. In this paper joint power allocation and relay selection is considered with focus on comparing two matching theory schemes namely the Hungarian assignment(HA) approach and the stable matching(SM)approach. Full duplex communication with multiple D2D user pairs are considered in this work. The relay selection problem is formulated as an optimization problem which is decomposed into power allocation and actual relay selection. We formulate the relay selection problem as a one to one weighted bipartite matching. Both HA and SM approaches outperform random selection by offering reduced total transmit power. Whereas the performance of HA and SM are mostly similar, with respect to channel uncertainty errors the HA algorithm is more robust against errors than SM.","PeriodicalId":114100,"journal":{"name":"IEEE EUROCON 2017 -17th International Conference on Smart Technologies","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116466779","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}
Pub Date : 2017-07-01DOI: 10.1109/EUROCON.2017.8011240
Aqsa Aslam, L. Almeida, Frederico Santos
Vehicular Ad-hoc Networks (VANETs) have a significant potential to enable new applications among multiple types of vehicles. In these networks, the Medium Access Control (MAC) plays an important role in providing an efficient communication channel. Currently, existing standards use the PHY and MAC of IEEE 802.11p, which is fully distributed and based on Carrier Sense Multiple Access with collision Avoidance (CSMA/CA), thus still prone to collisions. This has led to recent proposals for TDMA-based overlay protocols to prevent collisions, including one based on Reconfigurable and Adaptive TDMA (RA-TDMA). This protocol sets a TDMA round allocating slots to the nodes engaged in a given collaborative application, only, e.g., a platoon or a multimedia group. Then, other traffic, including from other TDMA rounds of concurrent applications can co-exist in space and time using the native CSMA/CA mechanism of IEEE 802.11p and the synchronization mechanism of RA-TDMA. In this paper, we do a qualitative comparison among TDMA protocols in VANETs showing the advantages of RA-TDMA. Early experimental results validate the capacity of RA-TDMA to support multiple concurrent rounds in a scalable manner.
{"title":"Using RA-TDMA to support concurrent collaborative applications in VANETs","authors":"Aqsa Aslam, L. Almeida, Frederico Santos","doi":"10.1109/EUROCON.2017.8011240","DOIUrl":"https://doi.org/10.1109/EUROCON.2017.8011240","url":null,"abstract":"Vehicular Ad-hoc Networks (VANETs) have a significant potential to enable new applications among multiple types of vehicles. In these networks, the Medium Access Control (MAC) plays an important role in providing an efficient communication channel. Currently, existing standards use the PHY and MAC of IEEE 802.11p, which is fully distributed and based on Carrier Sense Multiple Access with collision Avoidance (CSMA/CA), thus still prone to collisions. This has led to recent proposals for TDMA-based overlay protocols to prevent collisions, including one based on Reconfigurable and Adaptive TDMA (RA-TDMA). This protocol sets a TDMA round allocating slots to the nodes engaged in a given collaborative application, only, e.g., a platoon or a multimedia group. Then, other traffic, including from other TDMA rounds of concurrent applications can co-exist in space and time using the native CSMA/CA mechanism of IEEE 802.11p and the synchronization mechanism of RA-TDMA. In this paper, we do a qualitative comparison among TDMA protocols in VANETs showing the advantages of RA-TDMA. Early experimental results validate the capacity of RA-TDMA to support multiple concurrent rounds in a scalable manner.","PeriodicalId":114100,"journal":{"name":"IEEE EUROCON 2017 -17th International Conference on Smart Technologies","volume":"74 10","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120965778","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}
Pub Date : 2017-07-01DOI: 10.1109/EUROCON.2017.8011090
I. Rejer, P. Górski
There are a lot of scientific papers reporting a significant increase in classification accuracy after applying independent component analysis (ICA) for cleaning EEG data. Most of them, however, are focused on multidimensional data, recorded from a dense matrix of electrodes. When there are enough EEG channels, the benefits of ICA are straightforward — some of the components returned by ICA algorithm reflect artifacts disturbing the true brain activity and it is enough to detect and remove them to improve the signal quality. The question is what to do when data are recorded only from a few-channel EEG. The paper presents the results of the experiment that was performed in order to test our strategy for applying ICA for a 4-channel EEG data recorded for motor imagery brain computer interface. Five subjects, untrained in motor imagery paradigm took part in the experiment. According to our results the mean classification accuracy increased after applying ICA from 67% to 76% (for 10-second time window) and from 66% to 77% (for reduced 7-second time window).
{"title":"Independent component analysis in a motor imagery brain computer interface","authors":"I. Rejer, P. Górski","doi":"10.1109/EUROCON.2017.8011090","DOIUrl":"https://doi.org/10.1109/EUROCON.2017.8011090","url":null,"abstract":"There are a lot of scientific papers reporting a significant increase in classification accuracy after applying independent component analysis (ICA) for cleaning EEG data. Most of them, however, are focused on multidimensional data, recorded from a dense matrix of electrodes. When there are enough EEG channels, the benefits of ICA are straightforward — some of the components returned by ICA algorithm reflect artifacts disturbing the true brain activity and it is enough to detect and remove them to improve the signal quality. The question is what to do when data are recorded only from a few-channel EEG. The paper presents the results of the experiment that was performed in order to test our strategy for applying ICA for a 4-channel EEG data recorded for motor imagery brain computer interface. Five subjects, untrained in motor imagery paradigm took part in the experiment. According to our results the mean classification accuracy increased after applying ICA from 67% to 76% (for 10-second time window) and from 66% to 77% (for reduced 7-second time window).","PeriodicalId":114100,"journal":{"name":"IEEE EUROCON 2017 -17th International Conference on Smart Technologies","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131015810","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}
Pub Date : 2017-07-01DOI: 10.1109/EUROCON.2017.8011109
C. Pleşa, C. Răducan, M. Neag, B. Dimitriu
This paper presents a novel circuit implementation for overcurrent protection of low-dropout voltage regulators, that is able to limit the maximum current the regulator can source into the load to a value set by the user and to keep the current limit value fairly independent of process variation and output voltage, as well as maintaining its temperature drift over the wide temperature range of −50°C to +185°C to below 15%. This is achieved by using an open loop Widlar bandgap structure supplied by an additional current branch, placed in parallel with the power transistor. Design equations are presented in the paper along with electro-thermal simulations that identify the hot spots of the power transistor, thus optimizing the placement of the sense transistor and improving the current sensing accuracy. The proposed circuit is implemented in a standard bipolar junction transistor process. Measurement results — including thermal test scenarios are in good correlation with simulations, thus validating the design.
{"title":"Novel current limit circuitry for LDOs","authors":"C. Pleşa, C. Răducan, M. Neag, B. Dimitriu","doi":"10.1109/EUROCON.2017.8011109","DOIUrl":"https://doi.org/10.1109/EUROCON.2017.8011109","url":null,"abstract":"This paper presents a novel circuit implementation for overcurrent protection of low-dropout voltage regulators, that is able to limit the maximum current the regulator can source into the load to a value set by the user and to keep the current limit value fairly independent of process variation and output voltage, as well as maintaining its temperature drift over the wide temperature range of −50°C to +185°C to below 15%. This is achieved by using an open loop Widlar bandgap structure supplied by an additional current branch, placed in parallel with the power transistor. Design equations are presented in the paper along with electro-thermal simulations that identify the hot spots of the power transistor, thus optimizing the placement of the sense transistor and improving the current sensing accuracy. The proposed circuit is implemented in a standard bipolar junction transistor process. Measurement results — including thermal test scenarios are in good correlation with simulations, thus validating the design.","PeriodicalId":114100,"journal":{"name":"IEEE EUROCON 2017 -17th International Conference on Smart Technologies","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129837841","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}
Pub Date : 2017-07-01DOI: 10.1109/EUROCON.2017.8011068
Brandon Birmingham, R. Farrugia, Mark Vella
File carving tools carry out file recovery whenever the file-system meta-data is not available, which makes them a valuable addition to the cyber crime investigator's toolkit. Existing file carvers either cannot handle fragmented files or require a probabilistic model derived using a number of training images. This training data may not always be feasible to aggregate or its sheer size could undermine practicality. Similar to existing techniques, our method exploits both the JPEG syntax and semantic-based analysis steps in order to distinguish the correct fragments required for recovering images. The thumbnail affinity-based semantic analysis constitutes the novel aspect of this approach. Comparative evaluation using three widely used benchmark test sets show that our carver compares with the state-of-the-art commercial tool that requires an a-priori model while beating a number of popular forensic tools. This outcome demonstrates the successful replacement of the probabilistic model with thumbnail affinity, rendering this technique the right complement for existing carvers in situations where thumbnail information is readily available.
{"title":"Using thumbnail affinity for fragmentation point detection of JPEG files","authors":"Brandon Birmingham, R. Farrugia, Mark Vella","doi":"10.1109/EUROCON.2017.8011068","DOIUrl":"https://doi.org/10.1109/EUROCON.2017.8011068","url":null,"abstract":"File carving tools carry out file recovery whenever the file-system meta-data is not available, which makes them a valuable addition to the cyber crime investigator's toolkit. Existing file carvers either cannot handle fragmented files or require a probabilistic model derived using a number of training images. This training data may not always be feasible to aggregate or its sheer size could undermine practicality. Similar to existing techniques, our method exploits both the JPEG syntax and semantic-based analysis steps in order to distinguish the correct fragments required for recovering images. The thumbnail affinity-based semantic analysis constitutes the novel aspect of this approach. Comparative evaluation using three widely used benchmark test sets show that our carver compares with the state-of-the-art commercial tool that requires an a-priori model while beating a number of popular forensic tools. This outcome demonstrates the successful replacement of the probabilistic model with thumbnail affinity, rendering this technique the right complement for existing carvers in situations where thumbnail information is readily available.","PeriodicalId":114100,"journal":{"name":"IEEE EUROCON 2017 -17th International Conference on Smart Technologies","volume":"276 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134190145","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}
Pub Date : 2017-07-01DOI: 10.1109/EUROCON.2017.8011241
M. Multani, Arif Ur Rahman, M. Asfand-e-yar
Dynamic Bandwidth Allocation (DBA) is a fundamental task in Ethernet Passive Optical Networks (EPONs). An EPON must use an efficient DBA to achieve good network performance. A variety of DBA algorithms have been proposed towards this end. Most of these algorithms use average packet delay as an important metric for measuring the performance of the algorithm. In this paper, algorithms for Time Division Multiplexed (TDM) EPON and Hybrid TDM/WDM (wavelength division multiplexed) EPON are briefly reviewed. A Partially Online DBA (ParOnD) for Hybrid TDM/WDM EPON is proposed to improve bandwidth utilization in Hybrid EPONs. After evaluation of ParOnD against a comparable algorithm for Dynamic Wavelength and Bandwidth Allocation (DWBA-2), it is analyzed that ParOnD reduces both packet delay and the average queue depth of an Optical Network Unit (ONU) over low to medium loads. Thus, ParOnD improves bandwidth utilization considerably. In the paper, analysis of the algorithm, its shortcomings and possible future improvements are discussed.
{"title":"Partially online dynamic bandwidth allocation algorithm for hybrid TDM/WDM EPON","authors":"M. Multani, Arif Ur Rahman, M. Asfand-e-yar","doi":"10.1109/EUROCON.2017.8011241","DOIUrl":"https://doi.org/10.1109/EUROCON.2017.8011241","url":null,"abstract":"Dynamic Bandwidth Allocation (DBA) is a fundamental task in Ethernet Passive Optical Networks (EPONs). An EPON must use an efficient DBA to achieve good network performance. A variety of DBA algorithms have been proposed towards this end. Most of these algorithms use average packet delay as an important metric for measuring the performance of the algorithm. In this paper, algorithms for Time Division Multiplexed (TDM) EPON and Hybrid TDM/WDM (wavelength division multiplexed) EPON are briefly reviewed. A Partially Online DBA (ParOnD) for Hybrid TDM/WDM EPON is proposed to improve bandwidth utilization in Hybrid EPONs. After evaluation of ParOnD against a comparable algorithm for Dynamic Wavelength and Bandwidth Allocation (DWBA-2), it is analyzed that ParOnD reduces both packet delay and the average queue depth of an Optical Network Unit (ONU) over low to medium loads. Thus, ParOnD improves bandwidth utilization considerably. In the paper, analysis of the algorithm, its shortcomings and possible future improvements are discussed.","PeriodicalId":114100,"journal":{"name":"IEEE EUROCON 2017 -17th International Conference on Smart Technologies","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133838164","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}
Pub Date : 2017-07-01DOI: 10.1109/EUROCON.2017.8011217
U. Rudež, R. Mihalic
In this paper some important issues are brought up with respect to the use of wide-area monitoring system for under-frequency load shedding protection. In order to understand them, some basic knowledge about the power-system frequency behavior is first given. The forecast of trends in future under-frequency protection development is provided from the authors' point of view, which appears be in the form of predictive concept as a sub-category of adaptive under-frequency load shedding schemes. Additionally, the idea of distributing the shedding-decision from centralized system is explored, which is currently under thorough investigation. This briefly presented local predictive under-frequency load shedding concept is in full conformity with the conservative philosophy that the wide-area approach to the power-system protection should be installed as a smart supplement to a local one in order to compensate the risk of a communication network failure, which is a core element of wide-area monitoring, protection and control system.
{"title":"Trends in WAMS-based under-frequency load shedding protection","authors":"U. Rudež, R. Mihalic","doi":"10.1109/EUROCON.2017.8011217","DOIUrl":"https://doi.org/10.1109/EUROCON.2017.8011217","url":null,"abstract":"In this paper some important issues are brought up with respect to the use of wide-area monitoring system for under-frequency load shedding protection. In order to understand them, some basic knowledge about the power-system frequency behavior is first given. The forecast of trends in future under-frequency protection development is provided from the authors' point of view, which appears be in the form of predictive concept as a sub-category of adaptive under-frequency load shedding schemes. Additionally, the idea of distributing the shedding-decision from centralized system is explored, which is currently under thorough investigation. This briefly presented local predictive under-frequency load shedding concept is in full conformity with the conservative philosophy that the wide-area approach to the power-system protection should be installed as a smart supplement to a local one in order to compensate the risk of a communication network failure, which is a core element of wide-area monitoring, protection and control system.","PeriodicalId":114100,"journal":{"name":"IEEE EUROCON 2017 -17th International Conference on Smart Technologies","volume":"16 6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134291617","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}
Pub Date : 2017-07-01DOI: 10.1109/EUROCON.2017.8011137
A. Lagunov, N. Podorojnyak
Providing workers with telecommunication services in the Arctic is a very important task. To supply devices with power petrol and diesel generators are traditionally used. Delivery of fuel to the Arctic is difficult, unprofitable and threatening the environment. The authors suggest use alternative energy sources for autonomous satellite communications platform power supply. The work deals with the complex of alternative energy research. In general, the system was tested for efficiency in terms of transportation and in a field. Technical characteristics of the container correspond to the list of requirements. For areas with low winds it is possible to apply the system using 12 V as a controller threshold value. In order to prevent an emergency providing back-up power source is needed.
{"title":"The research of the complex of alternative energy to power the satellite container","authors":"A. Lagunov, N. Podorojnyak","doi":"10.1109/EUROCON.2017.8011137","DOIUrl":"https://doi.org/10.1109/EUROCON.2017.8011137","url":null,"abstract":"Providing workers with telecommunication services in the Arctic is a very important task. To supply devices with power petrol and diesel generators are traditionally used. Delivery of fuel to the Arctic is difficult, unprofitable and threatening the environment. The authors suggest use alternative energy sources for autonomous satellite communications platform power supply. The work deals with the complex of alternative energy research. In general, the system was tested for efficiency in terms of transportation and in a field. Technical characteristics of the container correspond to the list of requirements. For areas with low winds it is possible to apply the system using 12 V as a controller threshold value. In order to prevent an emergency providing back-up power source is needed.","PeriodicalId":114100,"journal":{"name":"IEEE EUROCON 2017 -17th International Conference on Smart Technologies","volume":"93 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124648809","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}
Pub Date : 2017-07-01DOI: 10.1109/EUROCON.2017.8011148
J. Angelov, R. Taleski, Jovica Vuletic, M. Todorovski, P. Krstevski, A. Mateska
One of the biggest threats for the security of power grids are congestion of cross-border lines and congestion in the network itself as result of parallel flows. Nowadays, occurrence of congestion is a result of limited network transfer capacities as a direct consequence of increased power transactions. One of the reasons for cross-border congestions are the unreal cross-border capacities calculations. This is a result of assumptions and simplifications made in the methodologies for total transfer capacity calculation. In this paper, we propose an iterative optimization algorithm based on modified DC network model that takes into consideration reactive power flows and all the constraints that comes forward. The proposed methodology is based on reduced Power Transfer Distribution Factor (PTDF) Power Transfer Distribution Factor) matrix. This approach successfully solves two DC Optimal Power Flow (OPF) problems: cost minimization and total transfer capacity calculation. For testing purposes IEEE test network RTS 96 is used.
{"title":"Application of reduced PTDF matrix in iterative modified DC network model for cross-border capacity calculation with consideration of reactive power flow constraints","authors":"J. Angelov, R. Taleski, Jovica Vuletic, M. Todorovski, P. Krstevski, A. Mateska","doi":"10.1109/EUROCON.2017.8011148","DOIUrl":"https://doi.org/10.1109/EUROCON.2017.8011148","url":null,"abstract":"One of the biggest threats for the security of power grids are congestion of cross-border lines and congestion in the network itself as result of parallel flows. Nowadays, occurrence of congestion is a result of limited network transfer capacities as a direct consequence of increased power transactions. One of the reasons for cross-border congestions are the unreal cross-border capacities calculations. This is a result of assumptions and simplifications made in the methodologies for total transfer capacity calculation. In this paper, we propose an iterative optimization algorithm based on modified DC network model that takes into consideration reactive power flows and all the constraints that comes forward. The proposed methodology is based on reduced Power Transfer Distribution Factor (PTDF) Power Transfer Distribution Factor) matrix. This approach successfully solves two DC Optimal Power Flow (OPF) problems: cost minimization and total transfer capacity calculation. For testing purposes IEEE test network RTS 96 is used.","PeriodicalId":114100,"journal":{"name":"IEEE EUROCON 2017 -17th International Conference on Smart Technologies","volume":"102 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124713878","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}
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