Pub Date : 2013-11-25DOI: 10.1109/NAPS.2013.6666849
Bo Chen, K. Butler-Purry, D. Kundur
The innovations in information and communication technologies (ICT) and digital computer controllers are increasingly integrated into the smart grid. This introduces cyberse-curity vulnerabilities which may cause system stability problems. In this paper, the modification attack on SVC and STATCOM in IEEE 39 bus system is simulated with DSAToolsTM. Then the impact on the system transient stability is studied. The results show that some modification cyber attacks can make the system angle or voltage unstable under the proposed attack scenarios.
{"title":"Impact analysis of transient stability due to cyber attack on FACTS devices","authors":"Bo Chen, K. Butler-Purry, D. Kundur","doi":"10.1109/NAPS.2013.6666849","DOIUrl":"https://doi.org/10.1109/NAPS.2013.6666849","url":null,"abstract":"The innovations in information and communication technologies (ICT) and digital computer controllers are increasingly integrated into the smart grid. This introduces cyberse-curity vulnerabilities which may cause system stability problems. In this paper, the modification attack on SVC and STATCOM in IEEE 39 bus system is simulated with DSAToolsTM. Then the impact on the system transient stability is studied. The results show that some modification cyber attacks can make the system angle or voltage unstable under the proposed attack scenarios.","PeriodicalId":421943,"journal":{"name":"2013 North American Power Symposium (NAPS)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122995451","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 : 2013-11-25DOI: 10.1109/NAPS.2013.6666864
M. Salmani, C. Edrington
Small-signal stability analysis of the Power Electronic-based Distribution Systems (PEDS) plays a prominent role in different stages of the systems analyses such as, preoperational (design), operational, and post-operational. Nowadays, due to increases in integration of renewable energy resources into power systems, in addition to invention of Power Electronic-based Components (PECs) such as: Solid State Transformers (SSTs), machine drives, and inverters, the nature of stability investigation is considerably changed due to the capability of these devices to operate as negative impedances in the systems. Therefore, small-signal stability needs to be addressed as well as large-signal stability in the PEDS. In addition, since the power consumers in the system are currently more sensitive, the priority to have a complete and comprehensive stability study of the system is imperative. Herein, small-signal stability analysis techniques developed based on impedance measurement of the PECs along with their pros and cons are described. A new small-signal stability analysis method based on d-q impedance measurement is developed and the stability of an individual SST connected to the AC source/load is investigated from its AC interface.
{"title":"Small-signal stability assessment of the power electronic-based AC systems using impedance measurnment-based technique","authors":"M. Salmani, C. Edrington","doi":"10.1109/NAPS.2013.6666864","DOIUrl":"https://doi.org/10.1109/NAPS.2013.6666864","url":null,"abstract":"Small-signal stability analysis of the Power Electronic-based Distribution Systems (PEDS) plays a prominent role in different stages of the systems analyses such as, preoperational (design), operational, and post-operational. Nowadays, due to increases in integration of renewable energy resources into power systems, in addition to invention of Power Electronic-based Components (PECs) such as: Solid State Transformers (SSTs), machine drives, and inverters, the nature of stability investigation is considerably changed due to the capability of these devices to operate as negative impedances in the systems. Therefore, small-signal stability needs to be addressed as well as large-signal stability in the PEDS. In addition, since the power consumers in the system are currently more sensitive, the priority to have a complete and comprehensive stability study of the system is imperative. Herein, small-signal stability analysis techniques developed based on impedance measurement of the PECs along with their pros and cons are described. A new small-signal stability analysis method based on d-q impedance measurement is developed and the stability of an individual SST connected to the AC source/load is investigated from its AC interface.","PeriodicalId":421943,"journal":{"name":"2013 North American Power Symposium (NAPS)","volume":"99 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115635188","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 : 2013-11-25DOI: 10.1109/NAPS.2013.6666933
Dongbo Zhao, A. Meliopoulos, Zhenyu Tan, Rui Fan
Reliability analysis of wind farms, especially when considering wake effect, has been a challenge due to the intermittency of wind energy. This paper proposes a probability state sequence method which utilizes the independent probability distribution of each wind turbine to come up with the integration of total output states of the wind farm and the derivation of reliability indices. When wake effect is considered, the method remains unchanged comparing to normal cases but the only modification needed is on the representing states for the sum sequence. By using the probability state sequence method, the reliability analysis can have higher computational efficiency and can be subject to easy change of parameters. A studied case has been shown to demonstrate the use and effectiveness of the method.
{"title":"Probability state sequence method for reliability analysis of wind farms considering wake effect","authors":"Dongbo Zhao, A. Meliopoulos, Zhenyu Tan, Rui Fan","doi":"10.1109/NAPS.2013.6666933","DOIUrl":"https://doi.org/10.1109/NAPS.2013.6666933","url":null,"abstract":"Reliability analysis of wind farms, especially when considering wake effect, has been a challenge due to the intermittency of wind energy. This paper proposes a probability state sequence method which utilizes the independent probability distribution of each wind turbine to come up with the integration of total output states of the wind farm and the derivation of reliability indices. When wake effect is considered, the method remains unchanged comparing to normal cases but the only modification needed is on the representing states for the sum sequence. By using the probability state sequence method, the reliability analysis can have higher computational efficiency and can be subject to easy change of parameters. A studied case has been shown to demonstrate the use and effectiveness of the method.","PeriodicalId":421943,"journal":{"name":"2013 North American Power Symposium (NAPS)","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132196385","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 : 2013-11-25DOI: 10.1109/NAPS.2013.6666844
Yang Feng, D. Tylavsky
This paper presents a novel method for calculating the unstable equilibrium point (UEP) for a two-bus system using holomorphic embedding (HE). The method is guaranteed to find the UEP solution. The focus of this paper is to prove mathematically that if a UEP solution exists, the method is guaranteed to arrive at that and only that solution and if no solution exists, then such is indicated by the oscillations is the series form of the solution. While there is limited interest in the solution to a two-bus problem, this is hopefully a first fruitful step that can eventually be generalized to the multi-bus problem and, possibly, other non-linear equations.
{"title":"A novel method to converge to the unstable equilibrium point for a two-bus system","authors":"Yang Feng, D. Tylavsky","doi":"10.1109/NAPS.2013.6666844","DOIUrl":"https://doi.org/10.1109/NAPS.2013.6666844","url":null,"abstract":"This paper presents a novel method for calculating the unstable equilibrium point (UEP) for a two-bus system using holomorphic embedding (HE). The method is guaranteed to find the UEP solution. The focus of this paper is to prove mathematically that if a UEP solution exists, the method is guaranteed to arrive at that and only that solution and if no solution exists, then such is indicated by the oscillations is the series form of the solution. While there is limited interest in the solution to a two-bus problem, this is hopefully a first fruitful step that can eventually be generalized to the multi-bus problem and, possibly, other non-linear equations.","PeriodicalId":421943,"journal":{"name":"2013 North American Power Symposium (NAPS)","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126770291","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 : 2013-11-25DOI: 10.1109/NAPS.2013.6666912
P. Mandal, A. U. Haque, S. Madhira, Donna I. Al-Hakeem
This paper presents a hybrid intelligent approach to forecast short-term output power of a PV system. The proposed hybrid method is composed of a data filtering technique based on wavelet transform (WT) and generalized regression neural network (GRNN). In order to validate the prediction capability of the proposed WT+GRNN model, test results are compared with other soft computing models (SCMs). This paper uses a PV system data derived from Ashland, Oregon. Simulation results demonstrate the greater ability of GRNN model to handle nonlinear solar PV time-series data, and when it is combined with the WT, the forecasting accuracy is greatly enhanced.
{"title":"Applying wavelets to predict solar PV output power using generalized regression neural network","authors":"P. Mandal, A. U. Haque, S. Madhira, Donna I. Al-Hakeem","doi":"10.1109/NAPS.2013.6666912","DOIUrl":"https://doi.org/10.1109/NAPS.2013.6666912","url":null,"abstract":"This paper presents a hybrid intelligent approach to forecast short-term output power of a PV system. The proposed hybrid method is composed of a data filtering technique based on wavelet transform (WT) and generalized regression neural network (GRNN). In order to validate the prediction capability of the proposed WT+GRNN model, test results are compared with other soft computing models (SCMs). This paper uses a PV system data derived from Ashland, Oregon. Simulation results demonstrate the greater ability of GRNN model to handle nonlinear solar PV time-series data, and when it is combined with the WT, the forecasting accuracy is greatly enhanced.","PeriodicalId":421943,"journal":{"name":"2013 North American Power Symposium (NAPS)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121881268","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 : 2013-11-25DOI: 10.1109/NAPS.2013.6666861
M. Panwar, B. Lundstrom, J. Langston, S. Suryanarayanan, S. Chakraborty
This paper explores and presents the capabilities of real time hardware-in-the-loop (RT-HIL) digital simulation for electric microgrids. RT-HIL is used by academia and industry for the simulation and testing of power systems at both the component and system levels. A literature survey is presented to identify existing real time simulation systems and some relevant applications. Simulations using RT-HIL involve modeling the interface between the components and systems in greater detail for increased understanding of interface issues. This is aimed at de-risking and hastening the penetration of new technologies such as microgrids.
{"title":"An overview of real time hardware-in-the-loop capabilities in digital simulation for electric microgrids","authors":"M. Panwar, B. Lundstrom, J. Langston, S. Suryanarayanan, S. Chakraborty","doi":"10.1109/NAPS.2013.6666861","DOIUrl":"https://doi.org/10.1109/NAPS.2013.6666861","url":null,"abstract":"This paper explores and presents the capabilities of real time hardware-in-the-loop (RT-HIL) digital simulation for electric microgrids. RT-HIL is used by academia and industry for the simulation and testing of power systems at both the component and system levels. A literature survey is presented to identify existing real time simulation systems and some relevant applications. Simulations using RT-HIL involve modeling the interface between the components and systems in greater detail for increased understanding of interface issues. This is aimed at de-risking and hastening the penetration of new technologies such as microgrids.","PeriodicalId":421943,"journal":{"name":"2013 North American Power Symposium (NAPS)","volume":"115 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115010259","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 : 2013-11-25DOI: 10.1109/NAPS.2013.6666971
M. E. Beehler
{"title":"T&D 2025: Risks or opportunities","authors":"M. E. Beehler","doi":"10.1109/NAPS.2013.6666971","DOIUrl":"https://doi.org/10.1109/NAPS.2013.6666971","url":null,"abstract":"","PeriodicalId":421943,"journal":{"name":"2013 North American Power Symposium (NAPS)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115077789","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 : 2013-11-25DOI: 10.1109/NAPS.2013.6666871
H. Babazadeh, Wenzhong Gao, Ziping Wu, Yan Li
In remote district without power supply from bulk electric grid, wind energy can be utilized to generate a large quantity of power when power plants are installed in an islanded micro-grid. Due to fluctuations in wind speed and resulting variable wind power, a small-scale diesel generator assists the wind power generator in providing a stable, sustained and efficient power generation. In addition, a Battery Energy Storage System (BESS) is capable of regulating its active power output in coordination with other generators to balance dynamic power demand and supply. Since the cost and efficiency is always the first issue for the control and operation of micro-grid in remote areas, energy management becomes the primary criterion in central control unit of micro-grids. The energy management of the wind power generator in micro-grid aims to optimize the system in terms of generation, cost, and load. Due to high uncertainty and volatility of wind speed, the Dynamic Programming Method (DPM) is employed in order to reduce the impact of wind speed uncertainty and fluctuation. For this purpose, a combined short term and long term optimization is studied in this paper. Meanwhile, a micro-grid system is modeled and simulated using MATLAB software.
{"title":"Optimal energy management of wind power generation system in islanded microgrid system","authors":"H. Babazadeh, Wenzhong Gao, Ziping Wu, Yan Li","doi":"10.1109/NAPS.2013.6666871","DOIUrl":"https://doi.org/10.1109/NAPS.2013.6666871","url":null,"abstract":"In remote district without power supply from bulk electric grid, wind energy can be utilized to generate a large quantity of power when power plants are installed in an islanded micro-grid. Due to fluctuations in wind speed and resulting variable wind power, a small-scale diesel generator assists the wind power generator in providing a stable, sustained and efficient power generation. In addition, a Battery Energy Storage System (BESS) is capable of regulating its active power output in coordination with other generators to balance dynamic power demand and supply. Since the cost and efficiency is always the first issue for the control and operation of micro-grid in remote areas, energy management becomes the primary criterion in central control unit of micro-grids. The energy management of the wind power generator in micro-grid aims to optimize the system in terms of generation, cost, and load. Due to high uncertainty and volatility of wind speed, the Dynamic Programming Method (DPM) is employed in order to reduce the impact of wind speed uncertainty and fluctuation. For this purpose, a combined short term and long term optimization is studied in this paper. Meanwhile, a micro-grid system is modeled and simulated using MATLAB software.","PeriodicalId":421943,"journal":{"name":"2013 North American Power Symposium (NAPS)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122403506","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 : 2013-11-25DOI: 10.1109/NAPS.2013.6666967
R. Belkacemi, A. Babalola, F. Ariyo, A. Feliachi
In this Work, we investigate the use of two-way communication to perform distributed restoration of smart power grid distribution systems. The concept used in this research is based on the distributed and intelligent multi-agent system technology where multiple smart entities are geographically spread and if equipped with communication capability these entities are able to reach goals or solutions that would have been impossible to reach with a single or a local control. The technology is implemented on the West Virginia Super Circuit to validate the theory. The results show that proposed system can restore the power in a timely manner without violating any constraints.
{"title":"Restoration of smart grid distribution system using two-way communication capability","authors":"R. Belkacemi, A. Babalola, F. Ariyo, A. Feliachi","doi":"10.1109/NAPS.2013.6666967","DOIUrl":"https://doi.org/10.1109/NAPS.2013.6666967","url":null,"abstract":"In this Work, we investigate the use of two-way communication to perform distributed restoration of smart power grid distribution systems. The concept used in this research is based on the distributed and intelligent multi-agent system technology where multiple smart entities are geographically spread and if equipped with communication capability these entities are able to reach goals or solutions that would have been impossible to reach with a single or a local control. The technology is implemented on the West Virginia Super Circuit to validate the theory. The results show that proposed system can restore the power in a timely manner without violating any constraints.","PeriodicalId":421943,"journal":{"name":"2013 North American Power Symposium (NAPS)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124147940","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 : 2013-11-25DOI: 10.1109/NAPS.2013.6666855
Hongbo Sun, D. Nikovski, T. Takano, Y. Kojima, T. Ohno
This paper proposes a new method for determining the location of single-phase-to-ground faults of ungrounded distribution systems based on residual voltage distribution. The possible faulted line segment and fault location are determined by comparing the phase angles of faulted phase voltages against a faulted phase reference angle, and the faulted phase voltages are determined as the difference between the fault caused residual voltage of all phases and the shunt caused residual voltage of un-faulted phases. The method determines the fault location solely based on the voltages and currents measured during the fault, and associated series impedance and shunt impedances of line segments. It does not require any measurements or information for the load demands and prefault conditions. Numerical examples are given to demonstrate the effectiveness of the proposed method.
{"title":"Fault location analysis of ungrounded distribution system based on residual voltage distribution","authors":"Hongbo Sun, D. Nikovski, T. Takano, Y. Kojima, T. Ohno","doi":"10.1109/NAPS.2013.6666855","DOIUrl":"https://doi.org/10.1109/NAPS.2013.6666855","url":null,"abstract":"This paper proposes a new method for determining the location of single-phase-to-ground faults of ungrounded distribution systems based on residual voltage distribution. The possible faulted line segment and fault location are determined by comparing the phase angles of faulted phase voltages against a faulted phase reference angle, and the faulted phase voltages are determined as the difference between the fault caused residual voltage of all phases and the shunt caused residual voltage of un-faulted phases. The method determines the fault location solely based on the voltages and currents measured during the fault, and associated series impedance and shunt impedances of line segments. It does not require any measurements or information for the load demands and prefault conditions. Numerical examples are given to demonstrate the effectiveness of the proposed method.","PeriodicalId":421943,"journal":{"name":"2013 North American Power Symposium (NAPS)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126803788","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：