2009 Power Systems Conference最新文献

{"title":"Copyright page","authors":"","doi":"10.1109/pedg.2015.7223116","DOIUrl":"https://doi.org/10.1109/pedg.2015.7223116","url":null,"abstract":"","PeriodicalId":300437,"journal":{"name":"2009 Power Systems Conference","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123887410","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}

{"title":"Add trip security to arc-flash detection for safety and reliability","authors":"M. Zeller, G. Scheer","doi":"10.1109/ICPS.2009.5463933","DOIUrl":"https://doi.org/10.1109/ICPS.2009.5463933","url":null,"abstract":"Arc-flash detection sensors provide a cost-effective way to reduce arc-flash energy by minimizing detection times. High-speed light detection and tripping can compromise protection security by misoperating during changing light conditions. Trip circuits using arc-flash light detection should be supervised using overcurrent protection with similar fast detection speeds. Combining arc-flash detection and high-speed overcurrent from a protective relay provides fast tripping and security, using both instantaneous overcurrent and light from the arc flash. The combination of relay and arc sensor provides independent fault detection with two separate technologies, thereby eliminating false trips from lighting and providing the fastest detection and tripping possible. Time coordination delays are eliminated when the arc is detected concurrently with an overcurrent. This paper presents the advantages of fast overcurrent detection combined with arc-flash measurement to produce a sensitive, fast, and secure tripping scheme.","PeriodicalId":300437,"journal":{"name":"2009 Power Systems Conference","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129663027","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}

{"title":"Modeling systems with distributed generators in IEC 61850","authors":"A. Apostolov","doi":"10.1109/PSAMP.2009.5262448","DOIUrl":"https://doi.org/10.1109/PSAMP.2009.5262448","url":null,"abstract":"Distributed generators are penetrating the electric power system at the sub-transmission, distribution and low voltage levels. Their integration with protection, automation and control systems based on the IEC 61850 standard requires the use of existing object models, as well as the new ones developed to meet the requirements of the distributed energy resources (DER) domain. Such modeling requires good understanding of the IEC 61850 modeling concepts, as well as the specifics of the different types of DERs. The paper describes the modeling hierarchy of the IEC 61850 standard and the new groups of logical nodes for modeling of systems with distributed generators.","PeriodicalId":300437,"journal":{"name":"2009 Power Systems Conference","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127257645","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}

{"title":"Effects of wide-area control on the protection and operation of distribution networks","authors":"W. Allen","doi":"10.1109/PSAMP.2009.5262330","DOIUrl":"https://doi.org/10.1109/PSAMP.2009.5262330","url":null,"abstract":"This paper examines the use of wide-area automatic control systems in electric power distribution networks. Today only a small percentage of distribution feeders employ wide-area control strategies. However, this number is growing as distribution engineers and managers respond to concerns about system reliability. Distribution networks are growing in complexity in the face of a coming shortage of electrical expertise as the “baby-boom generation” transitions into retirement. In this changing environment, wide-area automatic control holds the promise of increased system reliability. This paper presents wide-area automatic control strategies and discusses the potential impacts on system operations and system protection practices. Topics covered in this paper include: 1. An overview of wide-area automatic control strategies for distribution networks. This overview presents the objectives and basic operating principles of automatic network reconfiguration in recovering from electrical faults, providing load balancing, and assisting with voltage/VAR optimization. 2. The impact on system protection practices. This section discusses how the presence of wide-area control systems affects the protection of the distribution system. 3. The impact on system operation practices. This portion discusses how the operation of the distribution system is affected by the presence of wide-area control systems. Recommendations will be presented that address potential operations and protection challenges introduced by wide-area automatic control systems.","PeriodicalId":300437,"journal":{"name":"2009 Power Systems Conference","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123322810","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}

{"title":"Syncro-phasor based voltage and var management","authors":"A. Johnson","doi":"10.1109/PSAMP.2009.5262519","DOIUrl":"https://doi.org/10.1109/PSAMP.2009.5262519","url":null,"abstract":"The growing complexity of interconnected electric grids is creating operational challenges for electric utilities and the nation's infrastructure as a whole. Events in remote areas can cause major system disturbances as evident with the catastrophic blackouts that occurred in the Northeastern United States and Canada on August 14, 2003 and on the West Coast in August 1996. The increasing threat of these large-scale system disturbances makes using wide-area measurement systems to monitor large grids more urgent than ever before. Phasor Measurement technology is proving to be a promising new tool that enables real-time system monitoring and reduces the probability of major disturbances","PeriodicalId":300437,"journal":{"name":"2009 Power Systems Conference","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130924229","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}

{"title":"A smarter greener power grid","authors":"K. Geisler","doi":"10.1109/PSAMP.2009.5262327","DOIUrl":"https://doi.org/10.1109/PSAMP.2009.5262327","url":null,"abstract":"Ultimately, Advanced Metering Infrastructures, Distribution Automation, Substation Automation, Distribution Management Systems, Outage Management and Mobile Workforce Management Systems, GIS Facilities Modeling and Management, Asset Management Systems, Customer Systems and others must all fit this Smart Grid framework to be effective. They must act together to leverage the potential of a Smart Grid and significant availability of Green Power. The presentation will build upon this theme and provide industry examples to illustrate different aspects/issues in implementing Smart Grid and Green Power solutions.","PeriodicalId":300437,"journal":{"name":"2009 Power Systems Conference","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126208700","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}

{"title":"Comparison between high impedance and low impedance bus differential protection","authors":"J. Holbach","doi":"10.1109/PSAMP.2009.5262334","DOIUrl":"https://doi.org/10.1109/PSAMP.2009.5262334","url":null,"abstract":"High impedance bus differential relays are used on most of the busses in North America. The popularity can be explained by the good performance of this scheme in relation to CT saturation and the low cost, if used on a simple bus system. However with the introduction of numerical relays and their low CT burden as well as their ability of measuring several feeder currents, a low impedance bus differential principal could be applied on simple busses also. In addition, the availability of fiber optic communication inside of the substation allows the use of decentralized bus system in which the CT output values becomes transmitted via communication to a centralized unit versus having CT wires running to the control house. Low impedance bus differential protection systems have many positive attributes. Common advantages of all low impedance bus protection schemes are the ability to be able to use CT's of different ratios on respective branch inputs and the fact that the same CT used for the bus protection can be shared with the feeder protection relay. The question needs to be discussed what selection criteria needs to get evaluated for the selection of the appropriate principal. The paper will give an overview on both principles and explain the difference in building and evaluating of the differential current. The effect of CT saturation during external and internal faults will be discussed in details for both schemes as well as the CT requirements. Some advanced numerical techniques employed in low impedance bus differential relays to recognize CT saturation on heavy through-faults and avoid false tripping are presented. Common guidelines for setting both principles will be reviewed and explained in detail and some examples will be shown. The influence of the complexity of the bus system on the selection will be discussed. Benefits and disadvantages of both systems will be compared. The comparison will also include the difference during the installation, commissioning, operation and maintenance phase of the different systems. The evaluation will be done technically as well as economically.","PeriodicalId":300437,"journal":{"name":"2009 Power Systems Conference","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125141019","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}

{"title":"Distribution automation helps revitalize community","authors":"E. Gorrell, J. Niemira, E. Nelson","doi":"10.1109/PSAMP.2009.5262331","DOIUrl":"https://doi.org/10.1109/PSAMP.2009.5262331","url":null,"abstract":"Over the past ten years, the City of Danville has seen the region's core industries, such as tobacco and textiles, close down or move overseas. Understanding the need to develop new jobs in the region, the City of Danville and many other communities sought to draw high-tech and manufacturing companies to the area with a large available work force and pro-business politics. Recognizing the importance of power system reliability to industry, the City of Danville created a new technology district, called Cyber Park, which boasts a cutting-edge electrical distribution system. This paper examines the implementation of this distribution system and the advantages it provides to customers. The distribution system eliminates customer outages using high-speed switchgear and advanced relaying in a completely automated system. Power is supplied to Cyber Park in a closed-loop configuration from a local substation. Substation-relayed circuit breakers and underground switchgear utilize communications-assisted, high-speed tripping to detect and isolate faults, allowing the power to reroute around the loop and provide a highly reliable power supply to customers. This paper presents high-speed communications techniques over fiber-optic networks, which allow total clearing times of six cycles or less. Conclusions include the economic benefits of distribution automation projects for utilities and end users.","PeriodicalId":300437,"journal":{"name":"2009 Power Systems Conference","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132837179","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}

{"title":"Analysis of capacitive voltage transformer transients with wind farm integration","authors":"V. P. Mahadanaarachchi, R. Ramakumar","doi":"10.1109/PSAMP.2009.5262333","DOIUrl":"https://doi.org/10.1109/PSAMP.2009.5262333","url":null,"abstract":"Wind energy has gained much attention with the development of conversion technologies, concerns on fossil fuel use and associated environmental impacts. As a result, an increasing number of large wind farms are coming into the power system at high voltage (HV) grid level. Voltage transformers (VT) are used for obtaining secondary voltages suitable for metering and protection devices in a wind farm at collector feeders, medium voltage bus and HV side of the main step-up transformer(s). Capacitive Voltage Transformers (CVT) are preferred at HV level over the conventional electromagnetic VTs. In large wind farms, CVTs are installed on the HV side of the step-up transformer. However, during line faults, due to the collapse of primary voltage, CVT will dissipate its stored energy in stack capacitors and tuning reactor, which will introduce a transient component to the voltage inputs to protection and control equipments. This will have a significant impact on the distance and directional protective element performance in multi function numerical intelligent electronic devices. This paper considers a CVT placed at the HV side of a step-up transformer in a large wind farm. CVT and the wind farm employing Doubly Fed Induction Generators (DFIG) are modeled in Matlab/Simulink. Faults and voltage dips are created in the power system and within the wind farm, and CVT secondary voltage profiles are simulated and analyzed.","PeriodicalId":300437,"journal":{"name":"2009 Power Systems Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130158128","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}

{"title":"Dispersed generation impact on distribution network expansion planning","authors":"M. El-Sayed, Ahmed A. Arram","doi":"10.1109/PSAMP.2009.5262329","DOIUrl":"https://doi.org/10.1109/PSAMP.2009.5262329","url":null,"abstract":"The distribution system is the most extensive part of an electric system and represents the main causes for customer energy interruption. Therefore, the optimal expansion planning of such subsystem including the attractive option of integrating the dispersed generation (DG) can lead to significant economic gains in its installation cost and furthermore minimizing the unserved energy. This paper proposes an integrated model for determining the optimal DG capacity investment and operating cost to serve peak demand as well as the payment reduction toward compensating system losses along the planning period. Thereby, the studied expansion alternatives vary from sizing and sitting of DG generating units or expanding of existing substation and adding new distribution feeders to purchase power from the grid to meet the load demand growth. In the proposed optimization model LINGO software packages is adopted to provide accurate planning decisions. For non-linear constraints both successive linear programming (SLP) and generalized reduced gradient (GRG) algorithms are implemented. Integer models are solved using the branch-and-bound techniques. The different studied alternatives are assessed using present worth analysis to estimate the feasibility of introducing DG in solving the distribution network expansion planning.","PeriodicalId":300437,"journal":{"name":"2009 Power Systems Conference","volume":"16 9","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120920345","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}