Pub Date : 2015-11-02DOI: 10.1109/SUSTECH.2015.7314340
S. Kahrobaee, S. Asgarpoor
Smart grid incorporates communication and control technologies to provide more efficient and reliable electricity to customers. The infrastructure of such power system will allow the customers to generate and store electricity, and use that in case of an outage or disconnection from the utility. Therefore, the outage of power from the utility side does not necessarily result in loss of electricity. This paper presents a new process for reliability assessment of future power distribution systems affected by the customers' distributed energy resources (DER). The method to calculate the reliability indices, such as SAIFI and SAIDI, based on a Monte Carlo simulation is explained; and results are provided for case studies with residential, commercial, and industrial customers, renewable generation, and battery systems.
{"title":"Reliability assessment for smart grid and future power distribution systems","authors":"S. Kahrobaee, S. Asgarpoor","doi":"10.1109/SUSTECH.2015.7314340","DOIUrl":"https://doi.org/10.1109/SUSTECH.2015.7314340","url":null,"abstract":"Smart grid incorporates communication and control technologies to provide more efficient and reliable electricity to customers. The infrastructure of such power system will allow the customers to generate and store electricity, and use that in case of an outage or disconnection from the utility. Therefore, the outage of power from the utility side does not necessarily result in loss of electricity. This paper presents a new process for reliability assessment of future power distribution systems affected by the customers' distributed energy resources (DER). The method to calculate the reliability indices, such as SAIFI and SAIDI, based on a Monte Carlo simulation is explained; and results are provided for case studies with residential, commercial, and industrial customers, renewable generation, and battery systems.","PeriodicalId":147093,"journal":{"name":"2015 IEEE Conference on Technologies for Sustainability (SusTech)","volume":"29 4 Suppl 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131656801","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 : 2015-11-02DOI: 10.1109/SUSTECH.2015.7314328
Chengzhu Piao, J. Hung
This study describes a detailed analysis and compensation of dead-time effect in direct matrix converter. To prevent a short circuit in the power supply, a switching delay time is needed to insert into pulse width modulation (PWM) signals. Due to the dead time, the waveform of output current emerges distortion and increases total harmonic distortion (THD). Dead time compensation is necessary to optimize current distortion and reduce THD. Through analysis of dead time effect, deviations of voltage vectors caused by dead time effect are dependent on the direction of output currents. The voltage distortion increases harmonic components of output voltage and decreases control performance. Combined with the characteristics of carrier-based modulation method, in order to avoid determining the direction of output currents, a compensation method for dead time effect is suggested. The value of dead time is adjusted on-line by the value of corresponding phase current. The deviation of voltage vectors caused by dead time effect is directly compensated to three phase reference voltages. This dead time compensation method is suitable to matrix converter. Simulation results indicate that the proposed scheme can effectively improve the sinusoidal waveform and phase offset of the output current. The algorithm is simple to understand and easy to digital realization.
{"title":"Analysis and compensation of dead-time effect in direct matrix converter","authors":"Chengzhu Piao, J. Hung","doi":"10.1109/SUSTECH.2015.7314328","DOIUrl":"https://doi.org/10.1109/SUSTECH.2015.7314328","url":null,"abstract":"This study describes a detailed analysis and compensation of dead-time effect in direct matrix converter. To prevent a short circuit in the power supply, a switching delay time is needed to insert into pulse width modulation (PWM) signals. Due to the dead time, the waveform of output current emerges distortion and increases total harmonic distortion (THD). Dead time compensation is necessary to optimize current distortion and reduce THD. Through analysis of dead time effect, deviations of voltage vectors caused by dead time effect are dependent on the direction of output currents. The voltage distortion increases harmonic components of output voltage and decreases control performance. Combined with the characteristics of carrier-based modulation method, in order to avoid determining the direction of output currents, a compensation method for dead time effect is suggested. The value of dead time is adjusted on-line by the value of corresponding phase current. The deviation of voltage vectors caused by dead time effect is directly compensated to three phase reference voltages. This dead time compensation method is suitable to matrix converter. Simulation results indicate that the proposed scheme can effectively improve the sinusoidal waveform and phase offset of the output current. The algorithm is simple to understand and easy to digital realization.","PeriodicalId":147093,"journal":{"name":"2015 IEEE Conference on Technologies for Sustainability (SusTech)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123616123","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 : 2015-11-02DOI: 10.1109/SUSTECH.2015.7314326
Alfonso F. Torres-Rua, Manal Al Arab, Leila Hassan-Esfahani, A. Jensen, M. McKee
Researchers at the Utah Water Research Laboratory at Utah State University have developed a small unmanned aerial system (UAS) called "AggieAir" for use as a precision remote sensing tool. The AggieAirTM UAS platform can be launched and landed almost anywhere. It carries scientific-grade cameras that capture imagery in the visual (red/green/blue), near infrared, and infrared (thermal) spectra. It has been applied in several western states to provide high-resolution imagery in support of research on water, natural resources, and agricultural problems. This paper focuses on uses of AggieAir in the generation of information for use in agricultural operations, especially with respect to precision agriculture. Examples of the use of AggieAir multi-spectral imagery include high-resolution estimation of, evapotranspiration rates, crop tissue nitrogen and chlorophyll, surface and root-zone soil moisture, and crop leaf canopy volume.
{"title":"Development of unmanned aerial systems for use in precision agriculture: The AggieAir experience","authors":"Alfonso F. Torres-Rua, Manal Al Arab, Leila Hassan-Esfahani, A. Jensen, M. McKee","doi":"10.1109/SUSTECH.2015.7314326","DOIUrl":"https://doi.org/10.1109/SUSTECH.2015.7314326","url":null,"abstract":"Researchers at the Utah Water Research Laboratory at Utah State University have developed a small unmanned aerial system (UAS) called \"AggieAir\" for use as a precision remote sensing tool. The AggieAirTM UAS platform can be launched and landed almost anywhere. It carries scientific-grade cameras that capture imagery in the visual (red/green/blue), near infrared, and infrared (thermal) spectra. It has been applied in several western states to provide high-resolution imagery in support of research on water, natural resources, and agricultural problems. This paper focuses on uses of AggieAir in the generation of information for use in agricultural operations, especially with respect to precision agriculture. Examples of the use of AggieAir multi-spectral imagery include high-resolution estimation of, evapotranspiration rates, crop tissue nitrogen and chlorophyll, surface and root-zone soil moisture, and crop leaf canopy volume.","PeriodicalId":147093,"journal":{"name":"2015 IEEE Conference on Technologies for Sustainability (SusTech)","volume":"NS22 10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116554111","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 : 2015-11-02DOI: 10.1109/SUSTECH.2015.7314324
R. Kamali-Sarvestani, E. Nielson, Paul Weber
A recent method for printed circuit board technology is studied, which greatly reduces the amount of metallic and chemical waste by using an additive technology, as opposed to traditional processes based on subtractive technology which require the use of large amounts of acids and toxic solvents. We examined the eSurfaceTM process for electroless plating, by fabricating samples from various materials and studying the quality of the deposited patterns. The results show a significant decrease in the use of chemicals, a reduction in the amount of procedures necessary for printed circuit board manufacturing, and an elimination of solvents and etching materials typically used in PCB manufacturing.
{"title":"Sustainability in printed circuit board manufacturing decreasing waste using additive technology","authors":"R. Kamali-Sarvestani, E. Nielson, Paul Weber","doi":"10.1109/SUSTECH.2015.7314324","DOIUrl":"https://doi.org/10.1109/SUSTECH.2015.7314324","url":null,"abstract":"A recent method for printed circuit board technology is studied, which greatly reduces the amount of metallic and chemical waste by using an additive technology, as opposed to traditional processes based on subtractive technology which require the use of large amounts of acids and toxic solvents. We examined the eSurfaceTM process for electroless plating, by fabricating samples from various materials and studying the quality of the deposited patterns. The results show a significant decrease in the use of chemicals, a reduction in the amount of procedures necessary for printed circuit board manufacturing, and an elimination of solvents and etching materials typically used in PCB manufacturing.","PeriodicalId":147093,"journal":{"name":"2015 IEEE Conference on Technologies for Sustainability (SusTech)","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134614135","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 : 2015-11-02DOI: 10.1109/SUSTECH.2015.7314317
Vivek Abhilash Hanumantha Vajjala, W. Jewell
Aggregating houses and then applying a demand response (DR) program yields considerable benefit to both users and utility companies. This aggregation can prove beneficial to the utility because they can obtain an estimate of how much energy consumption can be reduced at a given point in time. The aggregator would coordinate between the company and the consumer to provide the demand reduction. In this research work, a group of simulated houses sharing the same climatic and geographical conditions were aggregated. They were simulated for a DR using a direct load control (DLC) program, whereby only the heating ventilation and air conditioning (HVAC) system was turned off for one ten-minute period in each of these houses, and the DR program was run for a two-hour period during peak load. Also, energy reductions resulting from the energy efficiency of the houses were simulated and then supplemented with a DR to see how they affect power consumption and how beneficial this would be to the utility. Increasing the thermal integrity levels on the houses decreased the DR potential, but a considerable drop in energy consumption itself was observed, which could prove beneficial in the long term. A co-related pattern was observed among different populations of houses, each of which had a different floor area but the same-size HVAC size and the same thermal integrity levels.
{"title":"Demand response potential in aggregated residential houses using GridLAB-D","authors":"Vivek Abhilash Hanumantha Vajjala, W. Jewell","doi":"10.1109/SUSTECH.2015.7314317","DOIUrl":"https://doi.org/10.1109/SUSTECH.2015.7314317","url":null,"abstract":"Aggregating houses and then applying a demand response (DR) program yields considerable benefit to both users and utility companies. This aggregation can prove beneficial to the utility because they can obtain an estimate of how much energy consumption can be reduced at a given point in time. The aggregator would coordinate between the company and the consumer to provide the demand reduction. In this research work, a group of simulated houses sharing the same climatic and geographical conditions were aggregated. They were simulated for a DR using a direct load control (DLC) program, whereby only the heating ventilation and air conditioning (HVAC) system was turned off for one ten-minute period in each of these houses, and the DR program was run for a two-hour period during peak load. Also, energy reductions resulting from the energy efficiency of the houses were simulated and then supplemented with a DR to see how they affect power consumption and how beneficial this would be to the utility. Increasing the thermal integrity levels on the houses decreased the DR potential, but a considerable drop in energy consumption itself was observed, which could prove beneficial in the long term. A co-related pattern was observed among different populations of houses, each of which had a different floor area but the same-size HVAC size and the same thermal integrity levels.","PeriodicalId":147093,"journal":{"name":"2015 IEEE Conference on Technologies for Sustainability (SusTech)","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133746717","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 : 2015-11-02DOI: 10.1109/SUSTECH.2015.7314343
Pranathi Bhattacharji, T. Brekken
This paper presents a simple reduced order model of the western grid interconnect (WECC) that includes interconnect inertia, load frequency response, and generation primary frequency response. The model is validated against detailed power flow and transient response studies and recreates the WECC frequency response to a large generator outage to within 0.01 Hz RMSE, with the same frequency nadir and settling frequency. To properly capture the generation primary response, three classes of generation are used: slow, medium, and fast. The slow group responds with a time constant of 27 seconds, the medium group with a time constant of 19 seconds, and the fast group with a time constant of 0.5 seconds. The model is used to investigate the usage of domestic water heaters to assist in primary frequency response and reduce the impact of sudden load or generation changes. It is shown that even a very small-scale implementation of demand response via domestic hot water heaters (about 1 %) can improve the frequency nadir by 10 %, from 59.666 Hz to 59.697 Hz. The settling frequency is improved from 59.768 Hz to 59.789 Hz.
{"title":"Reduced order WECC modeling for frequency response and energy storage integration","authors":"Pranathi Bhattacharji, T. Brekken","doi":"10.1109/SUSTECH.2015.7314343","DOIUrl":"https://doi.org/10.1109/SUSTECH.2015.7314343","url":null,"abstract":"This paper presents a simple reduced order model of the western grid interconnect (WECC) that includes interconnect inertia, load frequency response, and generation primary frequency response. The model is validated against detailed power flow and transient response studies and recreates the WECC frequency response to a large generator outage to within 0.01 Hz RMSE, with the same frequency nadir and settling frequency. To properly capture the generation primary response, three classes of generation are used: slow, medium, and fast. The slow group responds with a time constant of 27 seconds, the medium group with a time constant of 19 seconds, and the fast group with a time constant of 0.5 seconds. The model is used to investigate the usage of domestic water heaters to assist in primary frequency response and reduce the impact of sudden load or generation changes. It is shown that even a very small-scale implementation of demand response via domestic hot water heaters (about 1 %) can improve the frequency nadir by 10 %, from 59.666 Hz to 59.697 Hz. The settling frequency is improved from 59.768 Hz to 59.789 Hz.","PeriodicalId":147093,"journal":{"name":"2015 IEEE Conference on Technologies for Sustainability (SusTech)","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114313168","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 : 2015-11-02DOI: 10.1109/SUSTECH.2015.7314318
C. Bianchi, Stephen Lucich, Amanda D. Smith
Energy used for buildings is a large share of the energy consumed in the United States. Distributed power generation is a possible way to reduce energy consumption and emissions. Building energy consumption in urban environments is highly dependent on weather conditions surrounding the building, but most building energy simulations use weather data (TMY3) that is not site-specific. In this paper we investigated the influence of weather boundary conditions on energy simulations for 4 commercial building types by, comparing the electric and heating loads and rooftop photovoltaic power production for 3 locations in the same urban area. The results demonstrate that each of these commercial building types are similarly affected by site-specific weather conditions. In particular, they show that electrical loads are not very affected by this change, while the solar power production is overestimated by TMY3 data in comparison with customized weather data.
{"title":"Influence of weather boundary conditions on building energy modeling","authors":"C. Bianchi, Stephen Lucich, Amanda D. Smith","doi":"10.1109/SUSTECH.2015.7314318","DOIUrl":"https://doi.org/10.1109/SUSTECH.2015.7314318","url":null,"abstract":"Energy used for buildings is a large share of the energy consumed in the United States. Distributed power generation is a possible way to reduce energy consumption and emissions. Building energy consumption in urban environments is highly dependent on weather conditions surrounding the building, but most building energy simulations use weather data (TMY3) that is not site-specific. In this paper we investigated the influence of weather boundary conditions on energy simulations for 4 commercial building types by, comparing the electric and heating loads and rooftop photovoltaic power production for 3 locations in the same urban area. The results demonstrate that each of these commercial building types are similarly affected by site-specific weather conditions. In particular, they show that electrical loads are not very affected by this change, while the solar power production is overestimated by TMY3 data in comparison with customized weather data.","PeriodicalId":147093,"journal":{"name":"2015 IEEE Conference on Technologies for Sustainability (SusTech)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123326799","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 : 2015-11-02DOI: 10.1109/SUSTECH.2015.7314322
D. A. Horn
This paper reviews newly proposed product standards for Computer Servers in the Electronic Product Environmental Assessment Tool (EPEAT®) program. A brief overview of the program in place for other information technology products is presented and followed with a status and details on the standard writing for the new product group - Computer Servers. Two standards organizations are each writing their own unique standard for Computer Servers, the Institute of Electrical and Electronic Engineers (IEEE) and the National Sanitation Foundation (NSF). The proposed criteria and status of each draft standard, as available at the time of writing, will be presented and reviewed.
{"title":"New EPEAT® standards for computer servers: A review of new green procurement criteria for servers","authors":"D. A. Horn","doi":"10.1109/SUSTECH.2015.7314322","DOIUrl":"https://doi.org/10.1109/SUSTECH.2015.7314322","url":null,"abstract":"This paper reviews newly proposed product standards for Computer Servers in the Electronic Product Environmental Assessment Tool (EPEAT®) program. A brief overview of the program in place for other information technology products is presented and followed with a status and details on the standard writing for the new product group - Computer Servers. Two standards organizations are each writing their own unique standard for Computer Servers, the Institute of Electrical and Electronic Engineers (IEEE) and the National Sanitation Foundation (NSF). The proposed criteria and status of each draft standard, as available at the time of writing, will be presented and reviewed.","PeriodicalId":147093,"journal":{"name":"2015 IEEE Conference on Technologies for Sustainability (SusTech)","volume":"55 6","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131922531","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 : 2015-10-28DOI: 10.1109/SUSTECH.2015.7314334
Travis Simpkins, D. Cutler, Brian H. Hirsch, D. Olis, Kate Anderson
There are thousands of isolated, diesel-powered microgrids that deliver energy to remote communities around the world at very high energy costs. The Remote Communities Renewable Energy program aims to help these communities reduce their fuel consumption and lower their energy costs through the use of high penetration renewable energy. As part of this program, the REopt modeling platform for energy system integration and optimization was used to analyze cost-optimal pathways toward achieving a combined 75% reduction in diesel fuel and fuel oil consumption in a select Alaskan village. In addition to the existing diesel generator and fuel oil heating technologies, the model was able to select from among wind, battery storage, and dispatchable electric heaters to meet the electrical and thermal loads. The model results indicate that while 75% fuel reduction appears to be technically feasible it may not be economically viable at this time. When the fuel reduction target was relaxed, the results indicate that by installing high-penetration renewable energy, the community could lower their energy costs by 21% while still reducing their fuel consumption by 54%.
{"title":"Cost-optimal pathways to 75% fuel reduction in remote Alaskan villages","authors":"Travis Simpkins, D. Cutler, Brian H. Hirsch, D. Olis, Kate Anderson","doi":"10.1109/SUSTECH.2015.7314334","DOIUrl":"https://doi.org/10.1109/SUSTECH.2015.7314334","url":null,"abstract":"There are thousands of isolated, diesel-powered microgrids that deliver energy to remote communities around the world at very high energy costs. The Remote Communities Renewable Energy program aims to help these communities reduce their fuel consumption and lower their energy costs through the use of high penetration renewable energy. As part of this program, the REopt modeling platform for energy system integration and optimization was used to analyze cost-optimal pathways toward achieving a combined 75% reduction in diesel fuel and fuel oil consumption in a select Alaskan village. In addition to the existing diesel generator and fuel oil heating technologies, the model was able to select from among wind, battery storage, and dispatchable electric heaters to meet the electrical and thermal loads. The model results indicate that while 75% fuel reduction appears to be technically feasible it may not be economically viable at this time. When the fuel reduction target was relaxed, the results indicate that by installing high-penetration renewable energy, the community could lower their energy costs by 21% while still reducing their fuel consumption by 54%.","PeriodicalId":147093,"journal":{"name":"2015 IEEE Conference on Technologies for Sustainability (SusTech)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133977518","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 : 2015-07-31DOI: 10.1109/SUSTECH.2015.7314327
B. Bhattarai, B. Bak‐Jensen, J. Pillai, J. Gentle, Kurt S. Myers
Overvoltages in low voltage distribution grids with high solar photovoltaic (PV) integration are usually alleviated by implementing various active/reactive power control techniques. As those methods create revenue loss or inverter cost increase to PV owners, a coordinated control of load demand and the PVs, considering electric vehicles (EVs) as potential demand response resource, is proposed in this study to alleviate the overvoltages. A two-stage control is designed to comprehend the proposed coordinated control such that a centralized stage periodically determines optimum operating set-points for PVs/EVs and a decentralized stage adaptively control the PVs/EVs in real-time. To demonstrate effectiveness of the proposed approach, simulations are performed in a typical 0.4 kV/400 kVA Danish distribution network containing 45 detached residential consumers. The presented method demonstrates better technical performance by effectively mitigating the overvoltages and improved economic performance by efficiently utilizing the PV power. For the given configuration and market structure, the presented method demonstrated 19.23% increment on PV power revenue and 25.73% decrement on EV charging cost.
{"title":"Overvoltage mitigation using coordinated control of demand response and grid-tied photovoltaics","authors":"B. Bhattarai, B. Bak‐Jensen, J. Pillai, J. Gentle, Kurt S. Myers","doi":"10.1109/SUSTECH.2015.7314327","DOIUrl":"https://doi.org/10.1109/SUSTECH.2015.7314327","url":null,"abstract":"Overvoltages in low voltage distribution grids with high solar photovoltaic (PV) integration are usually alleviated by implementing various active/reactive power control techniques. As those methods create revenue loss or inverter cost increase to PV owners, a coordinated control of load demand and the PVs, considering electric vehicles (EVs) as potential demand response resource, is proposed in this study to alleviate the overvoltages. A two-stage control is designed to comprehend the proposed coordinated control such that a centralized stage periodically determines optimum operating set-points for PVs/EVs and a decentralized stage adaptively control the PVs/EVs in real-time. To demonstrate effectiveness of the proposed approach, simulations are performed in a typical 0.4 kV/400 kVA Danish distribution network containing 45 detached residential consumers. The presented method demonstrates better technical performance by effectively mitigating the overvoltages and improved economic performance by efficiently utilizing the PV power. For the given configuration and market structure, the presented method demonstrated 19.23% increment on PV power revenue and 25.73% decrement on EV charging cost.","PeriodicalId":147093,"journal":{"name":"2015 IEEE Conference on Technologies for Sustainability (SusTech)","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121668935","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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