Pub Date : 2015-06-07DOI: 10.1109/ICDCM.2015.7152009
L. Ott, Yunchao Han, Oliver Stephani, Julian Kaiser, Bernd Wunder, M. Mârz, K. Rykov
Interconnecting power converters within a low voltage DC grid can be a challenging task since these devices are rarely tested under final operating conditions during their development process in conjunction with converters from different manufacturers, different kinds of loads and appropriate grid impedances. In the worst case, stationary oscillations might occur in the grid setup for which the actual reason is hard to determine and solving the problem will require time-consuming trial and error means. Therefore, theoretical knowledge about how power converters react on grid-side disturbances is crucial for a preliminary analysis of the static and dynamic performance of low-voltage DC grids before plugging the devices together. Based on these considerations general guidelines for the dimensioning of control loops and grid-side capacitors of power converters can be derived. The following outlines describe the fundamentals of power converter behavior when exposed to disturbances occurring on the output current, e. g. from load steps. Another focus lies on shaping grid-side impedances of converters to avoid stability issues. Furthermore, a method to measure the impedances of interest is thoroughly described. All obtained results are verified in a brief case study.
{"title":"Modelling and measuring complex impedances of power electronic converters for stability assessment of low-voltage DC-grids","authors":"L. Ott, Yunchao Han, Oliver Stephani, Julian Kaiser, Bernd Wunder, M. Mârz, K. Rykov","doi":"10.1109/ICDCM.2015.7152009","DOIUrl":"https://doi.org/10.1109/ICDCM.2015.7152009","url":null,"abstract":"Interconnecting power converters within a low voltage DC grid can be a challenging task since these devices are rarely tested under final operating conditions during their development process in conjunction with converters from different manufacturers, different kinds of loads and appropriate grid impedances. In the worst case, stationary oscillations might occur in the grid setup for which the actual reason is hard to determine and solving the problem will require time-consuming trial and error means. Therefore, theoretical knowledge about how power converters react on grid-side disturbances is crucial for a preliminary analysis of the static and dynamic performance of low-voltage DC grids before plugging the devices together. Based on these considerations general guidelines for the dimensioning of control loops and grid-side capacitors of power converters can be derived. The following outlines describe the fundamentals of power converter behavior when exposed to disturbances occurring on the output current, e. g. from load steps. Another focus lies on shaping grid-side impedances of converters to avoid stability issues. Furthermore, a method to measure the impedances of interest is thoroughly described. All obtained results are verified in a brief case study.","PeriodicalId":110320,"journal":{"name":"2015 IEEE First International Conference on DC Microgrids (ICDCM)","volume":"301 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114584514","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 : 2015-06-07DOI: 10.1109/ICDCM.2015.7152043
Fengyan Zhang, Chunpeng Sun, Wen Wei, C. Meng, Ming Li, B. Fang
The number and variety of electric vehicles connected to grid continue to grow rapidly, which results in a heavy burden on grid. To solve this problem, the concept of V2G (Vehicle to Grid) that electric vehicles could act as a new power source for grid was proposed. With distributed renewable energy developing fast recent years, charging EVs is a good way to use it. The DC micro-grid program being conducted at the Xiamen University (China) consists of a 150kW peak photovoltaic system. A unique charging station has been proposed designed on the basis of the DC micro-grid, featuring three-way energy flow among the power grid, PV modules and electric vehicles. The paper proposes a charging station based on DC micro-grid which also can provide V2G service. The control strategy of converters is investigated. Finally, simulation based on MATLAB is built to validate the availability and effectiveness of the proposed system and control strategy.
并网电动汽车的数量和种类持续快速增长，给电网带来了沉重的负担。为了解决这一问题，提出了V2G (Vehicle To Grid)概念，即电动汽车作为电网的新电源。随着近年来分布式可再生能源的快速发展，电动汽车充电是一种很好的利用方式。在中国厦门大学进行的直流微电网项目包括一个150kW的峰值光伏系统。在直流微电网的基础上，设计了一种独特的充电站，具有电网、光伏组件和电动汽车之间的三向能量流。本文提出了一种基于直流微电网的充电站，可以同时提供V2G服务。对变流器的控制策略进行了研究。最后，建立了基于MATLAB的仿真，验证了所提出的系统和控制策略的有效性。
{"title":"Control strategy of electric charging station with V2G function based on DC micro-grid","authors":"Fengyan Zhang, Chunpeng Sun, Wen Wei, C. Meng, Ming Li, B. Fang","doi":"10.1109/ICDCM.2015.7152043","DOIUrl":"https://doi.org/10.1109/ICDCM.2015.7152043","url":null,"abstract":"The number and variety of electric vehicles connected to grid continue to grow rapidly, which results in a heavy burden on grid. To solve this problem, the concept of V2G (Vehicle to Grid) that electric vehicles could act as a new power source for grid was proposed. With distributed renewable energy developing fast recent years, charging EVs is a good way to use it. The DC micro-grid program being conducted at the Xiamen University (China) consists of a 150kW peak photovoltaic system. A unique charging station has been proposed designed on the basis of the DC micro-grid, featuring three-way energy flow among the power grid, PV modules and electric vehicles. The paper proposes a charging station based on DC micro-grid which also can provide V2G service. The control strategy of converters is investigated. Finally, simulation based on MATLAB is built to validate the availability and effectiveness of the proposed system and control strategy.","PeriodicalId":110320,"journal":{"name":"2015 IEEE First International Conference on DC Microgrids (ICDCM)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130537575","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 : 2015-06-07DOI: 10.1109/ICDCM.2015.7152002
Anupam Mukherjee, Ranganath Vallakati, Valentin Lachenaud, P. Ranganathan
This paper presents a density based clustering (DBSCAN) technique to visualize and analyze the smart-grid data. The technique will aid in detecting bad-data, various fault types, deviation on frequency, voltage or current values for better situational awareness. Synchrophasors (or a PMU) is a sensor placed on a transmission line that tracks voltage, current, phase and frequency of the line. To improve situational awareness of the smart grid monitoring in real-time, the utility must monitor the phasor data measurement delivered by the sensors. Time-stamped synchronized measurements offer tremendous benefit for pre and post-event analysis. The paper uses data from openPDC framework to aid system operators in carrying various predictive analytics, decisions.
{"title":"Using phasor data for visualization and data mining in smart-grid applications","authors":"Anupam Mukherjee, Ranganath Vallakati, Valentin Lachenaud, P. Ranganathan","doi":"10.1109/ICDCM.2015.7152002","DOIUrl":"https://doi.org/10.1109/ICDCM.2015.7152002","url":null,"abstract":"This paper presents a density based clustering (DBSCAN) technique to visualize and analyze the smart-grid data. The technique will aid in detecting bad-data, various fault types, deviation on frequency, voltage or current values for better situational awareness. Synchrophasors (or a PMU) is a sensor placed on a transmission line that tracks voltage, current, phase and frequency of the line. To improve situational awareness of the smart grid monitoring in real-time, the utility must monitor the phasor data measurement delivered by the sensors. Time-stamped synchronized measurements offer tremendous benefit for pre and post-event analysis. The paper uses data from openPDC framework to aid system operators in carrying various predictive analytics, decisions.","PeriodicalId":110320,"journal":{"name":"2015 IEEE First International Conference on DC Microgrids (ICDCM)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127778130","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 : 2015-06-07DOI: 10.1109/ICDCM.2015.7152050
Aditya R. Gautam, Suresh Singh, D. Fulwani
The paper presents a robust sliding mode controller for a dc/dc, bidirectional converter interfacing storage unit to ensure dc bus voltage regulation in a stand-alone dc microgrid. The dc bus supplies a combination of a constant power load and conventional resistive load. In order to enhance the battery life, a state-of-charge based charging algorithm is also implemented. Depending on the measured dc bus voltage, the controller selects the appropriate operating mode of the converter. The effectiveness of the proposed controller has been validated through simulation results.
{"title":"DC bus voltage regulation in the presence of constant power load using sliding mode controlled dc-dc Bi-directional converter interfaced storage unit","authors":"Aditya R. Gautam, Suresh Singh, D. Fulwani","doi":"10.1109/ICDCM.2015.7152050","DOIUrl":"https://doi.org/10.1109/ICDCM.2015.7152050","url":null,"abstract":"The paper presents a robust sliding mode controller for a dc/dc, bidirectional converter interfacing storage unit to ensure dc bus voltage regulation in a stand-alone dc microgrid. The dc bus supplies a combination of a constant power load and conventional resistive load. In order to enhance the battery life, a state-of-charge based charging algorithm is also implemented. Depending on the measured dc bus voltage, the controller selects the appropriate operating mode of the converter. The effectiveness of the proposed controller has been validated through simulation results.","PeriodicalId":110320,"journal":{"name":"2015 IEEE First International Conference on DC Microgrids (ICDCM)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129035676","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 : 2015-06-07DOI: 10.1109/ICDCM.2015.7152039
W. Setthapun, Suchat Srikaew, Jiratkwin Rakwichian, Nuttiya Tantranont, W. Rakwichian, Rajindra Singh
The Smart Community is a real living model community in the mountainous area that completely uses electricity from PV and distributes with DC microgrid in the range of 260 - 297 VDC. The Smart Community is located at the Chiang Mai World Green City of the Asian Development Institute for Community Economy and Technology (adiCET) in Mae Rim Campus of Chiang Mai Rajabhat University, Thailand. The community is comprised of 6 small houses, an office, a minimart, a coffee shop, a restaurant and an organic farm. All of the devices and appliances in the houses and farm are able to operate on DC microgrid, which include lighting, air conditioner, television, refrigerator, computer, water heater, and water pump. These appliances were modified to be able to use with DC as well as AC systems to increase the flexibility of power usage for the transition toward the DC based community. For the other buildings, both AC and DC grids are integrated in the office, minimart, coffee shop, and restaurant. For example during normal operation of the office, the air condition and lightings used the DC grids, but the copier machine and printers used the AC grid. The adiCET faculties, students, researchers and administrative staff used the Smart Community as the working and living place. Operation of the DC and AC usage as well as the issues occurred from the 4-years development were monitored and recorded.
{"title":"The integration and transition to a DC based community: A case study of the Smart Community in Chiang Mai World Green City","authors":"W. Setthapun, Suchat Srikaew, Jiratkwin Rakwichian, Nuttiya Tantranont, W. Rakwichian, Rajindra Singh","doi":"10.1109/ICDCM.2015.7152039","DOIUrl":"https://doi.org/10.1109/ICDCM.2015.7152039","url":null,"abstract":"The Smart Community is a real living model community in the mountainous area that completely uses electricity from PV and distributes with DC microgrid in the range of 260 - 297 VDC. The Smart Community is located at the Chiang Mai World Green City of the Asian Development Institute for Community Economy and Technology (adiCET) in Mae Rim Campus of Chiang Mai Rajabhat University, Thailand. The community is comprised of 6 small houses, an office, a minimart, a coffee shop, a restaurant and an organic farm. All of the devices and appliances in the houses and farm are able to operate on DC microgrid, which include lighting, air conditioner, television, refrigerator, computer, water heater, and water pump. These appliances were modified to be able to use with DC as well as AC systems to increase the flexibility of power usage for the transition toward the DC based community. For the other buildings, both AC and DC grids are integrated in the office, minimart, coffee shop, and restaurant. For example during normal operation of the office, the air condition and lightings used the DC grids, but the copier machine and printers used the AC grid. The adiCET faculties, students, researchers and administrative staff used the Smart Community as the working and living place. Operation of the DC and AC usage as well as the issues occurred from the 4-years development were monitored and recorded.","PeriodicalId":110320,"journal":{"name":"2015 IEEE First International Conference on DC Microgrids (ICDCM)","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127582915","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 : 2015-06-07DOI: 10.1109/ICDCM.2015.7152033
A. Brissette, J. Carr, Tao Cui, Jing Xu, L. Qi
The parallel growth of intelligent home automation and small-scale DC distribution has presented new opportunities to improve the functionality and performance of residential spaces. A “smart home” of the future will feature advancements in two essential layers of the house infrastructure: the power distribution layer and the information technology (IT) layer. This paper will discuss implementations of these two layers and present technologies that can conveniently and safely unite them, reducing expense and accelerating the adoption of smart home concepts.
{"title":"Analysis of emerging technology for DC-enabled smart homes","authors":"A. Brissette, J. Carr, Tao Cui, Jing Xu, L. Qi","doi":"10.1109/ICDCM.2015.7152033","DOIUrl":"https://doi.org/10.1109/ICDCM.2015.7152033","url":null,"abstract":"The parallel growth of intelligent home automation and small-scale DC distribution has presented new opportunities to improve the functionality and performance of residential spaces. A “smart home” of the future will feature advancements in two essential layers of the house infrastructure: the power distribution layer and the information technology (IT) layer. This paper will discuss implementations of these two layers and present technologies that can conveniently and safely unite them, reducing expense and accelerating the adoption of smart home concepts.","PeriodicalId":110320,"journal":{"name":"2015 IEEE First International Conference on DC Microgrids (ICDCM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115470120","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 : 2015-06-07DOI: 10.1109/ICDCM.2015.7152027
A. Mattsson, P. Nuutinen, P. Peltoniemi, T. Kaipia, J. Karppanen, V. Vaisanen, J. Partanen, P. Silventoinen
This paper analyses the life-cycle cost of a customer-end inverter that is used in a low voltage DC distribution system. Cost of the losses during the utilization period of the system and the investment cost of the main components is included in the study and the distribution between them is analyzed to determine the dominating cost factors. A sensitivity analysis is carried out to determine how variations in the cost of electricity, the cost of the hardware and the selected switching frequency affect the life-cycle cost.
{"title":"Life-cycle cost analysis for the customer-end inverter used in low voltage dc distribution","authors":"A. Mattsson, P. Nuutinen, P. Peltoniemi, T. Kaipia, J. Karppanen, V. Vaisanen, J. Partanen, P. Silventoinen","doi":"10.1109/ICDCM.2015.7152027","DOIUrl":"https://doi.org/10.1109/ICDCM.2015.7152027","url":null,"abstract":"This paper analyses the life-cycle cost of a customer-end inverter that is used in a low voltage DC distribution system. Cost of the losses during the utilization period of the system and the investment cost of the main components is included in the study and the distribution between them is analyzed to determine the dominating cost factors. A sensitivity analysis is carried out to determine how variations in the cost of electricity, the cost of the hardware and the selected switching frequency affect the life-cycle cost.","PeriodicalId":110320,"journal":{"name":"2015 IEEE First International Conference on DC Microgrids (ICDCM)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126839644","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 : 2015-06-07DOI: 10.1109/ICDCM.2015.7152044
Z. Shen, Zhenyu Miao, A. M. Roshandeh
Short circuit protection remains one of the major technical barriers in DC microgrids. This paper reviews state of the art of DC solid state circuit breakers (SSCBs). A new concept of a self-powered SSCB using normally-on wideband gap (WBG) semiconductor devices as the main static switch is described in this paper. The new SSCB detects short circuit faults by sensing its terminal voltage rise, and draws power from the fault condition itself to turn and hold off the static switch. The new two-terminal SSCB can be directly placed in a circuit branch without requiring any external power supply or extra wiring. Challenges and future trends in protecting low voltage distribution microgrids against short circuit and other faults are discussed.
{"title":"Solid state circuit breakers for DC micrgrids: Current status and future trends","authors":"Z. Shen, Zhenyu Miao, A. M. Roshandeh","doi":"10.1109/ICDCM.2015.7152044","DOIUrl":"https://doi.org/10.1109/ICDCM.2015.7152044","url":null,"abstract":"Short circuit protection remains one of the major technical barriers in DC microgrids. This paper reviews state of the art of DC solid state circuit breakers (SSCBs). A new concept of a self-powered SSCB using normally-on wideband gap (WBG) semiconductor devices as the main static switch is described in this paper. The new SSCB detects short circuit faults by sensing its terminal voltage rise, and draws power from the fault condition itself to turn and hold off the static switch. The new two-terminal SSCB can be directly placed in a circuit branch without requiring any external power supply or extra wiring. Challenges and future trends in protecting low voltage distribution microgrids against short circuit and other faults are discussed.","PeriodicalId":110320,"journal":{"name":"2015 IEEE First International Conference on DC Microgrids (ICDCM)","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126183280","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 : 2015-06-07DOI: 10.1109/ICDCM.2015.7152000
L. Meng, T. Dragicevic, J. Vasquez, J. Guerrero, E. R. Sanseverino
This paper proposes a hierarchical control scheme which applies optimization method into DC microgrids in order to improve the system overall efficiency while considering the State-of-Charge (SoC) balancing at the same time. Primary droop controller, secondary voltage restoration controller and tertiary optimization tool formulate the complete hierarchical control system. Virtual resistances are taken as the decision variables for achieving the objective. Simulation results are presented to verify the proposed approach.
{"title":"Hierarchical control with virtual resistance optimization for efficiency enhancement and State-of-Charge balancing in DC microgrids","authors":"L. Meng, T. Dragicevic, J. Vasquez, J. Guerrero, E. R. Sanseverino","doi":"10.1109/ICDCM.2015.7152000","DOIUrl":"https://doi.org/10.1109/ICDCM.2015.7152000","url":null,"abstract":"This paper proposes a hierarchical control scheme which applies optimization method into DC microgrids in order to improve the system overall efficiency while considering the State-of-Charge (SoC) balancing at the same time. Primary droop controller, secondary voltage restoration controller and tertiary optimization tool formulate the complete hierarchical control system. Virtual resistances are taken as the decision variables for achieving the objective. Simulation results are presented to verify the proposed approach.","PeriodicalId":110320,"journal":{"name":"2015 IEEE First International Conference on DC Microgrids (ICDCM)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127137537","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 : 2015-06-07DOI: 10.1109/ICDCM.2015.7152013
S. Moayedi, A. Davoudi
A distributed control method is proposed to handle load sharing among dc microgrids. While microgrids manage the internal load sharing, a higher level controller is required to provide load sharing among microgrids within a cluster. Power transfer between microgrids enables maximum utilization of resources and suppresses stress and aging of the components, which improves the reliability and availability, reduces the maintenance costs, and expands the lifespan of the distribution network. The proposed control mechanism uses a cooperative approach to adjust voltage set point for each microgrid and, accordingly, navigate power flow among them. Loading mismatch among neighbor microgrids is used in an updating policy for voltage adjustment. In case of any mismatch, the controller tunes the voltage to mitigate the mismatch and, eventually, equalize the loading percentage of all neighbor microgrids. While the voltage adjustment policy plays among microgrids, at a lower level, each microgrid propagates the voltage set point across all of its sources. Load sharing performance is analytically studied for the proposed controller. Simulation studies are performed on a cluster of four microgrids, where an excellent performance is reported. Contingency studies are also performed to illustrate the resiliency of the proposed method against the loss of communication links, so long as the communication graph has a spanning tree.
{"title":"Cooperative power management in DC microgrid clusters","authors":"S. Moayedi, A. Davoudi","doi":"10.1109/ICDCM.2015.7152013","DOIUrl":"https://doi.org/10.1109/ICDCM.2015.7152013","url":null,"abstract":"A distributed control method is proposed to handle load sharing among dc microgrids. While microgrids manage the internal load sharing, a higher level controller is required to provide load sharing among microgrids within a cluster. Power transfer between microgrids enables maximum utilization of resources and suppresses stress and aging of the components, which improves the reliability and availability, reduces the maintenance costs, and expands the lifespan of the distribution network. The proposed control mechanism uses a cooperative approach to adjust voltage set point for each microgrid and, accordingly, navigate power flow among them. Loading mismatch among neighbor microgrids is used in an updating policy for voltage adjustment. In case of any mismatch, the controller tunes the voltage to mitigate the mismatch and, eventually, equalize the loading percentage of all neighbor microgrids. While the voltage adjustment policy plays among microgrids, at a lower level, each microgrid propagates the voltage set point across all of its sources. Load sharing performance is analytically studied for the proposed controller. Simulation studies are performed on a cluster of four microgrids, where an excellent performance is reported. Contingency studies are also performed to illustrate the resiliency of the proposed method against the loss of communication links, so long as the communication graph has a spanning tree.","PeriodicalId":110320,"journal":{"name":"2015 IEEE First International Conference on DC Microgrids (ICDCM)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121634810","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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