Pub Date : 2012-12-31DOI: 10.1109/UPEC.2012.6398630
P. Kolhe, B. Bitzer, S. Chowdhury, S. Chowdhury
Development of Hybrid Power System (HPS) is promoted and researchers are motivated to find new alternatives to increase the share of regenerative energy in the energy market all over the world. This is due to the fact that the world is well aware about fast depleting energy resources on one side and ever increasing demand for energy on the other side. HPS is a energy system with combination of different regenerative energy resources like Solar, Wind, Geo-Thermal, Biomass and several others. In this paper, a physical model of Hybrid Energy System is discussed which consists of combination of Photovoltaic system, Wind energy system and battery storage system. The energy generated by photovoltaic and wind energy system can be stored in Battery storage system. The user can either feed this energy into power supply net or can use it for personal use. This work is part of a cooperation project between South Westphalia University of Applied Sciences, Soest (SWU), Germany and University of Cape Town (UCT), South Africa and is funded by research ministries of both the countries. This paper aims to develop a physical model and make it available for University students and researchers for experimental purpose contributing to the field of power engineering education. Automation, control and Monitoring of Hybrid power system will help to understand the concept thoroughly. Hence, Remote monitoring and Control System with necessary data interfaces is also proposed in this paper. This paper also aims to make the system available for researchers all over the world using the concept of remote lab or TELELAB.
{"title":"Hybrid power system model and TELELAB","authors":"P. Kolhe, B. Bitzer, S. Chowdhury, S. Chowdhury","doi":"10.1109/UPEC.2012.6398630","DOIUrl":"https://doi.org/10.1109/UPEC.2012.6398630","url":null,"abstract":"Development of Hybrid Power System (HPS) is promoted and researchers are motivated to find new alternatives to increase the share of regenerative energy in the energy market all over the world. This is due to the fact that the world is well aware about fast depleting energy resources on one side and ever increasing demand for energy on the other side. HPS is a energy system with combination of different regenerative energy resources like Solar, Wind, Geo-Thermal, Biomass and several others. In this paper, a physical model of Hybrid Energy System is discussed which consists of combination of Photovoltaic system, Wind energy system and battery storage system. The energy generated by photovoltaic and wind energy system can be stored in Battery storage system. The user can either feed this energy into power supply net or can use it for personal use. This work is part of a cooperation project between South Westphalia University of Applied Sciences, Soest (SWU), Germany and University of Cape Town (UCT), South Africa and is funded by research ministries of both the countries. This paper aims to develop a physical model and make it available for University students and researchers for experimental purpose contributing to the field of power engineering education. Automation, control and Monitoring of Hybrid power system will help to understand the concept thoroughly. Hence, Remote monitoring and Control System with necessary data interfaces is also proposed in this paper. This paper also aims to make the system available for researchers all over the world using the concept of remote lab or TELELAB.","PeriodicalId":326950,"journal":{"name":"2012 47th International Universities Power Engineering Conference (UPEC)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115158888","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 : 2012-12-31DOI: 10.1109/UPEC.2012.6398619
J. B. Hamelink, P. Nguyen, W. Kling, P. Ribeiro, R. J. de Groot
The power grid has gradually changed its operation during the recent decades. These developments have encouraged a shift from centralized to decentralized power flow control. A research has been carried out to investigate the possibilities to control power flows using the Smart Power Router (SPR) in distribution networks, where a large share of distributed generation (DG) is present. In this paper, the possible applications of the SPR have been explored in a laboratory test network. In particular, the SPR's control capabilities for both active and reactive power flows were enhanced to improve the system performance. An overview of the control of the SPR is presented. The effect of the power flow management with reconfigurations in the distribution network is considered. Furthermore, the possibilities for decoupled control of the active and the reactive power flow are elaborated.
{"title":"Routing power flows in distribution networks using locally controlled power electronics","authors":"J. B. Hamelink, P. Nguyen, W. Kling, P. Ribeiro, R. J. de Groot","doi":"10.1109/UPEC.2012.6398619","DOIUrl":"https://doi.org/10.1109/UPEC.2012.6398619","url":null,"abstract":"The power grid has gradually changed its operation during the recent decades. These developments have encouraged a shift from centralized to decentralized power flow control. A research has been carried out to investigate the possibilities to control power flows using the Smart Power Router (SPR) in distribution networks, where a large share of distributed generation (DG) is present. In this paper, the possible applications of the SPR have been explored in a laboratory test network. In particular, the SPR's control capabilities for both active and reactive power flows were enhanced to improve the system performance. An overview of the control of the SPR is presented. The effect of the power flow management with reconfigurations in the distribution network is considered. Furthermore, the possibilities for decoupled control of the active and the reactive power flow are elaborated.","PeriodicalId":326950,"journal":{"name":"2012 47th International Universities Power Engineering Conference (UPEC)","volume":"229 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121053719","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 : 2012-12-31DOI: 10.1109/UPEC.2012.6398655
D. Bernardon, V. Garcia, L. L. Pfitscher, M. Sperandio, L. Canha, M. Ramos
Topological reconfiguration is an important tool for the planning and operation of electric power distribution systems. Usually, the utilities can use multiple criteria regarding the observation of regulation policies and public awareness to drive the topological reconfiguration. Several researchers are looking for new optimization methods, as the complexity of this combinatorial issue is high in large systems and the classic optimization methods are failing to address the problem reasonably. Additionally, there is possibility to explore the automation equipment applying the concept of Smart Grid. This paper presents a new methodology and computer program for distribution network automatic reconfiguration. The topology is defined in real time and automatically performed by means of remote-controlled switches. The methodology includes a validation by computer simulations based on a multiple criteria decision making method. The developed tool has been applied in a pilot area of a power utility in Brazil.
{"title":"Smart grid concepts applied to distribution network reconfiguration","authors":"D. Bernardon, V. Garcia, L. L. Pfitscher, M. Sperandio, L. Canha, M. Ramos","doi":"10.1109/UPEC.2012.6398655","DOIUrl":"https://doi.org/10.1109/UPEC.2012.6398655","url":null,"abstract":"Topological reconfiguration is an important tool for the planning and operation of electric power distribution systems. Usually, the utilities can use multiple criteria regarding the observation of regulation policies and public awareness to drive the topological reconfiguration. Several researchers are looking for new optimization methods, as the complexity of this combinatorial issue is high in large systems and the classic optimization methods are failing to address the problem reasonably. Additionally, there is possibility to explore the automation equipment applying the concept of Smart Grid. This paper presents a new methodology and computer program for distribution network automatic reconfiguration. The topology is defined in real time and automatically performed by means of remote-controlled switches. The methodology includes a validation by computer simulations based on a multiple criteria decision making method. The developed tool has been applied in a pilot area of a power utility in Brazil.","PeriodicalId":326950,"journal":{"name":"2012 47th International Universities Power Engineering Conference (UPEC)","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121223952","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 : 2012-12-31DOI: 10.1109/UPEC.2012.6398579
M. Martino, Y. F. Quiñones, P. Raboni, Zhe Chen
This paper presents the dynamic response of a DC - micro-grid (DC-MG) controlled in master-slave mode. The benefits of the micro-grids (MGs) are the low cost in terms of power electronics converters and the high reliability and quality, even in case of loss connection to the transmission system. A DC-MG in fact can survive in standalone mode if properly managed. The considered system is made by a photovoltaic array (PV), a wind turbine (WT), a gas engine (GE) and an energy storage system (ESS). The DC-MG behavior is analyzed in different scenarios to demonstrate the efficacy of the control for all the units, especially in case of variable weather conditions with different DC loads. Thus the voltage level of the system and the power flow are shown, out of a detailed description of the power electronic interfaces featuring the distributed generators (DGs).
{"title":"Intelligent control for a DC micro-grid system","authors":"M. Martino, Y. F. Quiñones, P. Raboni, Zhe Chen","doi":"10.1109/UPEC.2012.6398579","DOIUrl":"https://doi.org/10.1109/UPEC.2012.6398579","url":null,"abstract":"This paper presents the dynamic response of a DC - micro-grid (DC-MG) controlled in master-slave mode. The benefits of the micro-grids (MGs) are the low cost in terms of power electronics converters and the high reliability and quality, even in case of loss connection to the transmission system. A DC-MG in fact can survive in standalone mode if properly managed. The considered system is made by a photovoltaic array (PV), a wind turbine (WT), a gas engine (GE) and an energy storage system (ESS). The DC-MG behavior is analyzed in different scenarios to demonstrate the efficacy of the control for all the units, especially in case of variable weather conditions with different DC loads. Thus the voltage level of the system and the power flow are shown, out of a detailed description of the power electronic interfaces featuring the distributed generators (DGs).","PeriodicalId":326950,"journal":{"name":"2012 47th International Universities Power Engineering Conference (UPEC)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127127198","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 : 2012-12-31DOI: 10.1109/UPEC.2012.6398695
P. Coughlan, J. O'sullivan, N. Kamaluddin
High Wind Speed (HWS) Shutdown is the unexpected shutdown of a wind turbine due to potentially harmful levels of wind speeds resulting in the sudden loss of generation. By 2020 over 4000 MW of wind generation is expected to connect to the system of the Republic of Ireland. HWS was identified as a potential challenge to the integration of high level of wind generation. The following analysis was undertaken to develop a better understanding of the effect that HWS Shutdown has on a power system. Data supplied by EirGrid, the Transmission System Operator, for the year 2010 was used to establish HWS shutdown effects and to uncover any trends such as location, models types, time of year etc... The windfarms involved in the study totaled 835 MW (23 Windfarms) of the 1396 MW on the system (Dec 2010). They consist mostly of transmission connected windfarms and also large distribution connected windfarms. A total of 3181 MWh was lost during 2010 due to HWS Shutdown, however only 5 windfarms in the study exceeded more than 20 hours of HWS Shutdown. Certain model types were also more sensitive to Shutdowns that others. More technologically advanced turbines were able to remain generating despite wind speeds of 30 m/s.
{"title":"High Wind Speed Shutdown analysis","authors":"P. Coughlan, J. O'sullivan, N. Kamaluddin","doi":"10.1109/UPEC.2012.6398695","DOIUrl":"https://doi.org/10.1109/UPEC.2012.6398695","url":null,"abstract":"High Wind Speed (HWS) Shutdown is the unexpected shutdown of a wind turbine due to potentially harmful levels of wind speeds resulting in the sudden loss of generation. By 2020 over 4000 MW of wind generation is expected to connect to the system of the Republic of Ireland. HWS was identified as a potential challenge to the integration of high level of wind generation. The following analysis was undertaken to develop a better understanding of the effect that HWS Shutdown has on a power system. Data supplied by EirGrid, the Transmission System Operator, for the year 2010 was used to establish HWS shutdown effects and to uncover any trends such as location, models types, time of year etc... The windfarms involved in the study totaled 835 MW (23 Windfarms) of the 1396 MW on the system (Dec 2010). They consist mostly of transmission connected windfarms and also large distribution connected windfarms. A total of 3181 MWh was lost during 2010 due to HWS Shutdown, however only 5 windfarms in the study exceeded more than 20 hours of HWS Shutdown. Certain model types were also more sensitive to Shutdowns that others. More technologically advanced turbines were able to remain generating despite wind speeds of 30 m/s.","PeriodicalId":326950,"journal":{"name":"2012 47th International Universities Power Engineering Conference (UPEC)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125376619","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 : 2012-12-31DOI: 10.1109/UPEC.2012.6398438
A. Sallama, M. Abbod, P. Turner
This paper describes the design and implementation of advanced Power Stability System Controller (PSSC) using neuro-fuzzy system, the controller is taught from data generated by simulating the system for the optimal control regime. The controller is compared to a multi-band control system which is utilized to stabilize the system for different operating conditions. Simulation results shows that the fuzzy logic controller has produced better control action in stabilizing the system for conditions such as: normal, after disturbance in the electrical national grid as a result of changing of the plant capacity like renewable energy units or in the worst case of fault operating conditions, e.g. phase short circuit to ground. The new controller led to making the settling time and overshoot proved to be lower which means that the system can reach to stability is the shortest time and with minimum disruption. Such behaviour will improve the quality of the provided power to the national grid.
{"title":"Neuro-fuzzy system for power generation quality improvements","authors":"A. Sallama, M. Abbod, P. Turner","doi":"10.1109/UPEC.2012.6398438","DOIUrl":"https://doi.org/10.1109/UPEC.2012.6398438","url":null,"abstract":"This paper describes the design and implementation of advanced Power Stability System Controller (PSSC) using neuro-fuzzy system, the controller is taught from data generated by simulating the system for the optimal control regime. The controller is compared to a multi-band control system which is utilized to stabilize the system for different operating conditions. Simulation results shows that the fuzzy logic controller has produced better control action in stabilizing the system for conditions such as: normal, after disturbance in the electrical national grid as a result of changing of the plant capacity like renewable energy units or in the worst case of fault operating conditions, e.g. phase short circuit to ground. The new controller led to making the settling time and overshoot proved to be lower which means that the system can reach to stability is the shortest time and with minimum disruption. Such behaviour will improve the quality of the provided power to the national grid.","PeriodicalId":326950,"journal":{"name":"2012 47th International Universities Power Engineering Conference (UPEC)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114956141","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 : 2012-12-31DOI: 10.1109/UPEC.2012.6398584
Linwei Chen, S. Qi, Haiyu Li
The expected increase in connection of distributed generation (DG) may cause voltage rise problems on the existing distribution network. To address this issue, an adaptive voltage controller using On Load Tap Changer (OLTC) and Automatic Voltage Control (AVC) relay was proposed in previous research. In order to reduce costs of implementing large numbers of measurements, Distribution State Estimator (DSE) was used to determine the voltage reference setting for the AVC relay. This paper presents several improvements of the closed-loop testing system based on previous work. A graphical user interface (GUI) is developed to implement the adaptive voltage controller and to display the network voltages dynamically. In order to regulate busbar voltages remotely, control signals between GUI and the network are transmitted using ethernet communication technology. The case studies demonstrate that the proposed adaptive voltage control scheme is able to increase the output capacity of DG without violating voltage limits.
分布式发电连接的预期增加可能会导致现有配电网出现电压上升问题。为了解决这一问题，在以往的研究中提出了一种采用有载分接开关(OLTC)和自动电压控制(AVC)继电器的自适应电压控制器。为了降低实现大量测量的成本，采用分布状态估计器(distributed State Estimator, DSE)来确定AVC继电器的基准电压整定。本文在前人工作的基础上，对闭环测试系统进行了改进。开发了一个图形用户界面(GUI)来实现自适应电压控制器和动态显示电网电压。为了远程调节母线电压，GUI与网络之间的控制信号采用以太网通信技术传输。实例研究表明，所提出的自适应电压控制方案能够在不违反电压限制的情况下提高DG的输出容量。
{"title":"Improved adaptive voltage controller for active distribution network operation with distributed generation","authors":"Linwei Chen, S. Qi, Haiyu Li","doi":"10.1109/UPEC.2012.6398584","DOIUrl":"https://doi.org/10.1109/UPEC.2012.6398584","url":null,"abstract":"The expected increase in connection of distributed generation (DG) may cause voltage rise problems on the existing distribution network. To address this issue, an adaptive voltage controller using On Load Tap Changer (OLTC) and Automatic Voltage Control (AVC) relay was proposed in previous research. In order to reduce costs of implementing large numbers of measurements, Distribution State Estimator (DSE) was used to determine the voltage reference setting for the AVC relay. This paper presents several improvements of the closed-loop testing system based on previous work. A graphical user interface (GUI) is developed to implement the adaptive voltage controller and to display the network voltages dynamically. In order to regulate busbar voltages remotely, control signals between GUI and the network are transmitted using ethernet communication technology. The case studies demonstrate that the proposed adaptive voltage control scheme is able to increase the output capacity of DG without violating voltage limits.","PeriodicalId":326950,"journal":{"name":"2012 47th International Universities Power Engineering Conference (UPEC)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115460036","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 : 2012-12-31DOI: 10.1109/UPEC.2012.6398561
Wei Hu, Shimeng Dong, Q. Lu, Fei Xu, Lianjie Lv
With the rapid development of the Inner Mongolia power grid, especially wind power capacity continuing to increase, its randomness and volatility put forward higher requirements on the grid to run scheduling. faced of the multi-level, multi-scale, multi-object complex grid, it is the problem to be solved - how to make full use of adjustable system resources and means of automation equipment, optimizing the operating status of the grid to achieve the coordination of the active and reactive optimization and distribution to ensure the safety of the grid, stability, economic operation. In view of the existing operating and scheduling technologies of Inner Mongolia power grid and drawing on the idea of hybrid control system, this article proposes a control strategy of machine net coordination and optimization based on layered event-driven control. This strategy takes into account indicators as economy, safety and quality of the system. It establishes a layered event driven control model to realize layered management and regulation of the whole system. It can automatically judge and select the optimal (or quasi optimal or appropriate) control mode, thus ensuring the sound dynamic quality of the entire power system while improving its stability and reactive power flow to reduce the network loss. Based on the control theory system, we conducted simulation analysis of Inner Mongolia power grid. The result reveals that the control strategy can not only keep contact line exchange power and central node voltage within permitted range, but also improve the economy and safety of the system. The simulation analysis proves that our control strategy can guarantee the safe, sound and economic operation of the system. It can elevate the automatic control level of Inner Mongolia power grid and guide fine adjustment of active and reactive power.
{"title":"Coordinated optimizing control strategy between power generators and power grid in Inner Mongolia","authors":"Wei Hu, Shimeng Dong, Q. Lu, Fei Xu, Lianjie Lv","doi":"10.1109/UPEC.2012.6398561","DOIUrl":"https://doi.org/10.1109/UPEC.2012.6398561","url":null,"abstract":"With the rapid development of the Inner Mongolia power grid, especially wind power capacity continuing to increase, its randomness and volatility put forward higher requirements on the grid to run scheduling. faced of the multi-level, multi-scale, multi-object complex grid, it is the problem to be solved - how to make full use of adjustable system resources and means of automation equipment, optimizing the operating status of the grid to achieve the coordination of the active and reactive optimization and distribution to ensure the safety of the grid, stability, economic operation. In view of the existing operating and scheduling technologies of Inner Mongolia power grid and drawing on the idea of hybrid control system, this article proposes a control strategy of machine net coordination and optimization based on layered event-driven control. This strategy takes into account indicators as economy, safety and quality of the system. It establishes a layered event driven control model to realize layered management and regulation of the whole system. It can automatically judge and select the optimal (or quasi optimal or appropriate) control mode, thus ensuring the sound dynamic quality of the entire power system while improving its stability and reactive power flow to reduce the network loss. Based on the control theory system, we conducted simulation analysis of Inner Mongolia power grid. The result reveals that the control strategy can not only keep contact line exchange power and central node voltage within permitted range, but also improve the economy and safety of the system. The simulation analysis proves that our control strategy can guarantee the safe, sound and economic operation of the system. It can elevate the automatic control level of Inner Mongolia power grid and guide fine adjustment of active and reactive power.","PeriodicalId":326950,"journal":{"name":"2012 47th International Universities Power Engineering Conference (UPEC)","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116072907","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 : 2012-12-31DOI: 10.1109/UPEC.2012.6398648
Xiaohua Huang, Hongjie Zhang, M. Qiu, Qian Di, Jiahui Zhu, M. Redfern, W. Yuan
HTS Cable termination as an important component of HTS Cable is to connect the HTS Cable and Outer terminal. The main components of HTS cable termination are current lead, electrical insulator, cryostat and Liquid Nitrogen. To development and test of HTS cable termination, the electrical field analysis, cryostat design and high voltage test technologies are needed. It is developed and tested of a cold dielectric HTS cable termination applying in distribution network. This paper reports two types of 35kV/2kA level HTS cable terminations, that is, bushing type termination and insulator type termination. The insulation design, two type termination structure and test results are shown.
{"title":"Development and test of 35kV/2kA high temperature superconducting cable termination","authors":"Xiaohua Huang, Hongjie Zhang, M. Qiu, Qian Di, Jiahui Zhu, M. Redfern, W. Yuan","doi":"10.1109/UPEC.2012.6398648","DOIUrl":"https://doi.org/10.1109/UPEC.2012.6398648","url":null,"abstract":"HTS Cable termination as an important component of HTS Cable is to connect the HTS Cable and Outer terminal. The main components of HTS cable termination are current lead, electrical insulator, cryostat and Liquid Nitrogen. To development and test of HTS cable termination, the electrical field analysis, cryostat design and high voltage test technologies are needed. It is developed and tested of a cold dielectric HTS cable termination applying in distribution network. This paper reports two types of 35kV/2kA level HTS cable terminations, that is, bushing type termination and insulator type termination. The insulation design, two type termination structure and test results are shown.","PeriodicalId":326950,"journal":{"name":"2012 47th International Universities Power Engineering Conference (UPEC)","volume":"105 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122950394","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 : 2012-12-31DOI: 10.1109/UPEC.2012.6398544
Hongbo Shao, J. Bialek
In recent decades, blackouts spread around the world due to an increasing penetration of Distribution Generation (DG) and commercial benefits with maximizing utilization of transmission and distribution networks. Normally, blackouts are imminent when usual methods in the widely-used three-defence-line scheme fail, such as preventive control, emergency control and corrective control. An adaptive and controlled islanding scheme has already been proposed to be undertaken as a last-resort action to prevent imminent wide-area blackouts. In this paper, we present this controlled adaptive islanding scheme and investigate one crucial question “when to island”, which decides if the controlled islanding scheme could be successful. Finally, in order to create cascading failure scenarios in complicated power systems during dynamic simulation, which is the main nature of blackout, modeling of protection system for networks and generators are proposed to develop.
{"title":"When to island in the controlled islanding scheme to prevent imminent wide-area blackouts","authors":"Hongbo Shao, J. Bialek","doi":"10.1109/UPEC.2012.6398544","DOIUrl":"https://doi.org/10.1109/UPEC.2012.6398544","url":null,"abstract":"In recent decades, blackouts spread around the world due to an increasing penetration of Distribution Generation (DG) and commercial benefits with maximizing utilization of transmission and distribution networks. Normally, blackouts are imminent when usual methods in the widely-used three-defence-line scheme fail, such as preventive control, emergency control and corrective control. An adaptive and controlled islanding scheme has already been proposed to be undertaken as a last-resort action to prevent imminent wide-area blackouts. In this paper, we present this controlled adaptive islanding scheme and investigate one crucial question “when to island”, which decides if the controlled islanding scheme could be successful. Finally, in order to create cascading failure scenarios in complicated power systems during dynamic simulation, which is the main nature of blackout, modeling of protection system for networks and generators are proposed to develop.","PeriodicalId":326950,"journal":{"name":"2012 47th International Universities Power Engineering Conference (UPEC)","volume":"83 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124629119","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：