{"title":"Minimum degree reordering based graph partitioning method for distributed fault section estimation system in power networks","authors":"T. Bi, Y. Ni, F. Wu, Qixun Yang","doi":"10.1109/TDC.2001.971236","DOIUrl":"https://doi.org/10.1109/TDC.2001.971236","url":null,"abstract":"In order to make fault section estimation (FSE) in large-scale power networks use a distributed artificial intelligence approach, we an efficient way to partition the large-scale power network into desired number of connected subnetworks has to developed, such that each sub-network should have quasi-balanced working burden in performing FSE. In this paper, an efficient minimum degree reordering based graph partitioning method is suggested for the partitioning task. The method consists of two basic steps: partitioning the power network into connected, quasi-balanced and frontier minimized sub-networks based on minimum degree reordering; and minimizing the number of the frontier nodes of the sub-networks through iterations so as to reduce the interaction of FSE in adjacent sub-networks. The partitioning procedure and characteristic analysis is presented. The method has been implemented with sparse storage technique and tested in the IEEE 14-bus, 30-bus and 118-bus systems respectively. Computer simulation results show that the proposed multiple-way graph partitioning method is suitable for FSE in large-scale power networks and is compared favorably with other graph partitioning methods suggested in references.","PeriodicalId":182269,"journal":{"name":"2001 IEEE/PES Transmission and Distribution Conference and Exposition. Developing New Perspectives (Cat. No.01CH37294)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130677807","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":"Interconnecting single-phase backup generation to the utility distribution system","authors":"R. Dugan, T. Mcdermott, D. Rizy, S. Steffel","doi":"10.1109/TDC.2001.971282","DOIUrl":"https://doi.org/10.1109/TDC.2001.971282","url":null,"abstract":"One potentially large source of underutilized distributed generation (DG) capacity exists in single-phase standby backup gensets on farms served from single-phase feeder laterals. Utilizing the excess capacity would require interconnecting to the utility system. Connecting single-phase gensets to the utility system presents some interesting technical issues that have not been previously investigated. This paper addresses several of the interconnection issues associated with this form of DG including voltage regulation, harmonics, overcurrent protection, and islanding. A significant amount of single-phase DG can be accommodated by the utility distribution system, but there are definite limitations due to the nature and location of the DG. These limitations may be more restrictive than is commonly assumed for three-phase DG installed on stronger parts of the electric distribution system.","PeriodicalId":182269,"journal":{"name":"2001 IEEE/PES Transmission and Distribution Conference and Exposition. Developing New Perspectives (Cat. No.01CH37294)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125500948","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":"The impact of HTS cables on power flow distribution and short-circuit currents within a meshed network","authors":"J. Jipping, A. Mansoldo, C. Wakefield","doi":"10.1109/TDC.2001.971329","DOIUrl":"https://doi.org/10.1109/TDC.2001.971329","url":null,"abstract":"With the demonstration of the first high temperature superconducting cable to be fully installed within a utility's network, in Detroit, there is a realistic expectation of the installation of more superconducting cables in large complex networks in the near future. HTS cables are viable alternatives in areas were space considerations are extremely costly or where overhead lines cannot be built due to public concern and sentiment. This paper presents the results of a power system study conducted on the Detroit Edison transmission system, which compares load flow impacts of HTS cables in a meshed transmission network. In this study, a new 120 kV link was applied to an existing system to solve future load growth expectations. A comparison of alternative technologies was also conducted and evaluated versus the effects of the introduction of a HTS cable. Two methods of alternative reinforcements were created, one focused on using the same circuit paths and space occupancy, the other compared circuits with the same overall capability excluding space constraints, both methodologies were evaluated in terms of system power flow impacts along with impacts in short circuit current levels. Through variations in load, and generation dispatch patterns the reliability impact of the cable was evaluated using N-1, and N-2 (line and generator outage) simulation. Analysis of the resulting voltage profiles and power flow distribution were also used for comparing alternative system impacts.","PeriodicalId":182269,"journal":{"name":"2001 IEEE/PES Transmission and Distribution Conference and Exposition. Developing New Perspectives (Cat. No.01CH37294)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126715385","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":"Opportunities for electricity storage in distributed generation and renewables","authors":"J. McDowall","doi":"10.1109/TDC.2001.971424","DOIUrl":"https://doi.org/10.1109/TDC.2001.971424","url":null,"abstract":"This document discusses opportunities for electrical energy storage in the field of distributed generation, specifically related to microturbines and residential fuel cell generators. Electricity storage can also mitigate some of the problems associated with large-scale deployment of renewables, such as wind-powered generation. A brief discussion of newer battery technologies for these applications is also included.","PeriodicalId":182269,"journal":{"name":"2001 IEEE/PES Transmission and Distribution Conference and Exposition. Developing New Perspectives (Cat. No.01CH37294)","volume":"65 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126369244","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":"Strategic reliability analysis","authors":"G. Bertini","doi":"10.1109/TDC.2001.971356","DOIUrl":"https://doi.org/10.1109/TDC.2001.971356","url":null,"abstract":"Power utilities are faced with over 600000 kilometers of pre-1980 vintage solid-dielectric underground cables. Most of these cables do not meet the reliability standards required of a 21st century economy and would cost $30 billion dollars to replace. A cost effective tool referred to as \"SRA\" (strategic reliability analysis) is described which allows the mining of the utility's own data to definitively answer the critical strategic questions: (1) What are the required capital expenditures and where do those expenditures need to be targeted to drive reliability to an acceptable value? (2) What are the costs associated with reliability enhancement options per unit of reliability? (3) How do these values compare to my peers? SRA demonstrates the trade-offs between cost and reliability and provides a tactical plan to prioritize the circuits where problems are most likely to occur and where the impact of the expenditure is maximized based on a rigorous economic model.","PeriodicalId":182269,"journal":{"name":"2001 IEEE/PES Transmission and Distribution Conference and Exposition. Developing New Perspectives (Cat. No.01CH37294)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122286563","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}
M. Baran, W. F. Newell, D. Hart, Jinsan Kim, G. Lampley, J. Stoupis
{"title":"Power quality monitoring at the supply side","authors":"M. Baran, W. F. Newell, D. Hart, Jinsan Kim, G. Lampley, J. Stoupis","doi":"10.1109/TDC.2001.971247","DOIUrl":"https://doi.org/10.1109/TDC.2001.971247","url":null,"abstract":"/sup T/his paper summarizes a power quality (PQ) monitoring investigation conducted at the utility distribution substation level. The main goal was to determine the real-time PQ monitoring issues from the user's perspective: what type of data needs to be captured; and how it should be presented to the user. These issues have been investigated from a supply (utility) point of view, rather than the demand (customer) side view. The investigation involved installing three relays with PQ monitoring capability (ABB DPU2000R) to monitor the voltage quality at three distribution substations of Carolina Power and Light - A Progress Energy Company in North Carolina, USA. The PQ field data captured by these devices is then analyzed and presented to the user (CP&L PQ engineers) to see if the data provides the appropriate information to the user. The paper summarizes the typical voltage quality events monitored and also their presentation to the user. The paper shows that the PQ devices used facilitate the PQ monitoring effectively, in that they provide the user the PQ data in a form that minimizes the data manipulation. In particular, the paper illustrates how the user can use the PQ data directly to construct the voltage sag and outage profiles for a distribution substation.","PeriodicalId":182269,"journal":{"name":"2001 IEEE/PES Transmission and Distribution Conference and Exposition. Developing New Perspectives (Cat. No.01CH37294)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115862353","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}
S. Yin, Chan-nan Lu, E. Liu, Yu-Chang Huang, Chinug-Yi Huang
{"title":"Assessment of interruption cost to high tech industry in Taiwan","authors":"S. Yin, Chan-nan Lu, E. Liu, Yu-Chang Huang, Chinug-Yi Huang","doi":"10.1109/TDC.2001.971246","DOIUrl":"https://doi.org/10.1109/TDC.2001.971246","url":null,"abstract":"A major issue in utility system resource planning is to provide justification of new reliability levels. Electric service interruption cost is a key indicator of customer expectation and therefore reliability worth. Various surveys have been conducted for assessing interruption costs to different types of customers. To justify the investment on providing premium power for high tech industry, a survey aimed to have a closer look of loss to high tech industrial customers due to electric service interruptions has been conducted. Six high tech categories including semiconductor, computer peripheral, telecommunication, optoelectronics, precision machinery and biotechnology industries were surveyed. An attempt was also conducted to obtain preliminary information of the high tech industry power quality requirements. This paper summarizes some of the important findings from the survey.","PeriodicalId":182269,"journal":{"name":"2001 IEEE/PES Transmission and Distribution Conference and Exposition. Developing New Perspectives (Cat. No.01CH37294)","volume":"83 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121748123","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":"Predictive distribution reliability analysis considering post fault restoration and coordination failure","authors":"W. Carr","doi":"10.1109/TDC.2001.971384","DOIUrl":"https://doi.org/10.1109/TDC.2001.971384","url":null,"abstract":"Calculation of predicted distribution reliability indexes can be implemented using a distribution analysis model and the algorithms defined by Distribution System Reliability Handbook, EPRI Project 1356-1 Final Report. The calculation of predicted reliability indexes is fairly straightforward until post fault restoration and coordination failure are included. This paper presents the methods used to implement predictive reliability with consideration for post fault restoration and coordination failure into a distribution analysis software model.","PeriodicalId":182269,"journal":{"name":"2001 IEEE/PES Transmission and Distribution Conference and Exposition. Developing New Perspectives (Cat. No.01CH37294)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124978075","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":"Performance of utility power connectors in a saline environment","authors":"B. Johnson, M. Braunovic","doi":"10.1109/TDC.2001.971337","DOIUrl":"https://doi.org/10.1109/TDC.2001.971337","url":null,"abstract":"Corrosion is recognized as one of the most significant reliability concerns. The main objective of the program was to conduct a controlled field study aimed at examining the long-term effects of a worst case operating environment on the performance of power connector systems. It was established that connector life was determined largely by connector design and that loss of mechanical contact load at conductor-connector interfaces, due to corrosion and corrosion product buildup, was a major factor controlling connector life. The results showed that the fired-wedge connectors had the most reliable performance whereas the compression and bolted connectors performed less well under the field exposure conditions.","PeriodicalId":182269,"journal":{"name":"2001 IEEE/PES Transmission and Distribution Conference and Exposition. Developing New Perspectives (Cat. No.01CH37294)","volume":"175 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132562533","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":"Lightning-caused distribution outages","authors":"W. Chisholm, S. Cress, J. Polak","doi":"10.1109/TDC.2001.971391","DOIUrl":"https://doi.org/10.1109/TDC.2001.971391","url":null,"abstract":"Two rural distribution systems in Ontario, Canada were instrumented to study the relations between lightning events and power system disturbances. Strong time-of-day and time-of-year trends were found in the momentary operation history and component damage rates over four years of study. Implications for the entire Hydro-One Network design philosophy have been drawn from recent advances in the computation of induced overvoltages above lossy earth for overhead lines, inside lossy earth for cables and into two-layer soil for ground electrodes.","PeriodicalId":182269,"journal":{"name":"2001 IEEE/PES Transmission and Distribution Conference and Exposition. Developing New Perspectives (Cat. No.01CH37294)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133328377","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}