PES T&D 2012Pub Date : 2012-05-07DOI: 10.1109/TDC.2012.6281512
E. Schweitzer, D. Finney, M. Mynam
{"title":"Communications-assisted schemes for distributed generation protection","authors":"E. Schweitzer, D. Finney, M. Mynam","doi":"10.1109/TDC.2012.6281512","DOIUrl":"https://doi.org/10.1109/TDC.2012.6281512","url":null,"abstract":"Integrating generation into the distribution system presents several challenges. Distributed generation (DG) can affect the coordination between reclosers and fuses, compromising fuse-saving schemes and thereby reducing power quality and reliability. Nuisance tripping of distributed generators, either from local protection or from anti-islanding schemes, is also an issue. The use of communications-assisted schemes is well established at the transmission level. However, conventional communications links may not be cost-effective for use at the distribution level. With the advent of spread-spectrum radio, there is an opportunity to improve the performance of DG protection and anti-islanding schemes. Communications links based on wireless technology are much more cost-effective but have characteristics that can differ from conventional channels. This paper illustrates how teleprotection schemes can be designed to suit both the topology of the distribution network and the characteristics of the wireless channel, allowing DG to be integrated without compromising the reliability of the distribution network.","PeriodicalId":19873,"journal":{"name":"PES T&D 2012","volume":"17 1","pages":"1-8"},"PeriodicalIF":0.0,"publicationDate":"2012-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76992236","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}
PES T&D 2012Pub Date : 2012-05-07DOI: 10.1109/TDC.2012.6281534
H. Caswell
{"title":"Analysis of catastrophic events using statistical outlier methods","authors":"H. Caswell","doi":"10.1109/TDC.2012.6281534","DOIUrl":"https://doi.org/10.1109/TDC.2012.6281534","url":null,"abstract":"Use of IEEE Standard 1366-2003 for determining major events has provided substantial consistency when comparing year-on-year performance, however certain events (such as hurricanes or ice storms) that destroy substantial portions of a company's power system may result in extremely large daily SAIDI results which could skew the calculation of the major event threshold over the subsequent five years (according to the standard). This change in threshold could result in certain days in subsequent years not being considered as Major Events. The Catastrophic Event Task Force, convened under the Distribution Reliability Working Group, undertook substantial investigations to explore the impact of these events and the ability for an outlier method to be developed which transferred well across a variety of companies. This paper will explore an outlier identification method used by statisticians, notably the use of box and whiskers plots, to determine its application in segregating outlier data. It will also summarize the approaches considered and the final conclusions arrived at by the Catastrophic Event Task Force.","PeriodicalId":19873,"journal":{"name":"PES T&D 2012","volume":"185 ","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2012-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72556313","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}
PES T&D 2012Pub Date : 2012-05-07DOI: 10.1109/TDC.2012.6281507
Ja Knauss, C. Warren, D. Kearns
{"title":"An innovative approach to smart automation testing at National Grid","authors":"Ja Knauss, C. Warren, D. Kearns","doi":"10.1109/TDC.2012.6281507","DOIUrl":"https://doi.org/10.1109/TDC.2012.6281507","url":null,"abstract":"Upon completion of a successful Distribution Automation (DA) Pilot Project centered in National Grid's upstate New York service territory, it was determined that the reliability improvements delivered by the pilot demonstration justified a much more comprehensive effort to further evaluate additional Smart Grid technologies. The vision was to conduct experiments with a full suite of Smart Grid technologies including: AMI; Home Area Network and energy management systems; Automatic Fault Isolation & System Restoration; advanced feeder monitoring; distribution transformer monitoring; single pole tripping and Pulse Closing technology on distribution line reclosers; advanced capacitor control with independent pole operation; faulted circuit indicators with 2-way communication capability; and distribution fault locating capability. This vision came to be known as National Grid's Smart Grid Pilot proposal. Many challenges exist with such a comprehensive approach from public and personnel safety, to ensuring interoperability between devices and systems of different manufacture. In order to determine which technologies would provide the most benefit to National Grid's customer base, a means was needed to prequalify the various types of products available before large scale deployments were initiated. Looking at the large number of Smart Grid device suppliers, architectures and products available, we realized that the optimum solution would be to build a facility wherein a wide range of Smart Grid technologies could be installed and systematically put through their paces; i.e. actually tested in as near a real-world atmosphere as practical. Thus was born the National Grid “Smart Technology Centre” or STC. Soon thereafter, National Grid's Utility of the Future engineering team designed, engineered, and constructed a truly innovative test fixture that enabled system level testing on complex distribution networks to ensure process safety during field deployment. One of only a few known organizations in the U.S., National Grid has in-house capability to truly test and evaluate an end-to-end Smart distribution system architecture where systems such as automated fault isolation and system restoration can be evaluated. This paper will discuss interoperability testing that National Grid embarked upon to prepare for its proposed Smart Grid Pilot demonstration and will detail the lengths that were taken in creating a test site where medium voltage Smart Grid technologies could be fully evaluated to ensure that the various applications would play well with each other prior to actually being deployed in the field. Furthermore, this paper will focus on providing an overview of the system level testing and technical evaluation of distribution protection and control equipment with automated fault isolation and system restoration capabilities. It will also detail a number of lessons learned from this effort and discuss future plans for smart technology evaluation as a bas","PeriodicalId":19873,"journal":{"name":"PES T&D 2012","volume":"7 1","pages":"1-8"},"PeriodicalIF":0.0,"publicationDate":"2012-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72705769","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}
PES T&D 2012Pub Date : 2012-05-07DOI: 10.1109/TDC.2012.6281551
W. McDermid, J. Lambert
{"title":"Construction of a high voltage test facility","authors":"W. McDermid, J. Lambert","doi":"10.1109/TDC.2012.6281551","DOIUrl":"https://doi.org/10.1109/TDC.2012.6281551","url":null,"abstract":"Manitoba Hydro has constructed a facility for dielectric testing of equipment rated up to 500 kVac and 500 kVdc. A test system for induced, no-load and full load tests on large power transformers is being added.","PeriodicalId":19873,"journal":{"name":"PES T&D 2012","volume":"321 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2012-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75095056","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}
PES T&D 2012Pub Date : 2012-05-07DOI: 10.1109/TDC.2012.6281713
M. Ahmed, W. L. Soo
{"title":"Development of novel distribution automation system (DAS) on customer side distribution system","authors":"M. Ahmed, W. L. Soo","doi":"10.1109/TDC.2012.6281713","DOIUrl":"https://doi.org/10.1109/TDC.2012.6281713","url":null,"abstract":"This research work has been done in designing and developing a Novel Distribution Automation System (DAS) in an open loop customer side distribution system. The research has utilized an automation techniques in both hardware and software environment using a communication network and embedded controllers along with power meters which has utilized the possible best solution for the fault operation and control tasks remotely. All hardware and software components have been developed and integrated together. Data exchange mechanism has been developed between the host computer and the embedded controllers that function in two way data exchanges between the two. The remote hardware controllers such as remoter terminal units (RTUs) are enabled to the communication modules to operate the substation remotely. The metering equipment is used as real time data restoration tool and gathers the customer's consumption energy information. Thus a multipurpose power meter is used as hand of the electrical utility at the customer side. IsaGraf provides communication - GSM (Global system for Mobile Communications) function blocks such as SMS (Short Message Service) operating functions “SMS_send”, “SMS_test”, “SMS_gets” and developed SMS usage functions. These are functions are created for GSM based messaging system to communicate with the person in charge to operate the system at anytime and anywhere remotely. Fabrication testing has been done on real distribution system and the results are shown in this paper.","PeriodicalId":19873,"journal":{"name":"PES T&D 2012","volume":"58 1","pages":"1-7"},"PeriodicalIF":0.0,"publicationDate":"2012-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75308917","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}
PES T&D 2012Pub Date : 2012-05-07DOI: 10.1109/TDC.2012.6281566
Joseph M. LoPorto
{"title":"Application of self-healing technologies on power distribution systems: PHI's automatic sectionalizing & restoration systems","authors":"Joseph M. LoPorto","doi":"10.1109/TDC.2012.6281566","DOIUrl":"https://doi.org/10.1109/TDC.2012.6281566","url":null,"abstract":"With a boost by DOE SGIG grants1, Pepco Holdings, Inc (PHI) is embarking on an ambition plan to expand its Automatic Sectionalizing and Restoration Systems (ASR). More than 130 feeders will be made ASR capable by the end of 2013. PHI's ASR system is made up of substation automation equipment, inclusive of an ASR control program, automatic feeder sectionalizing devices and an end-to-end communication system. These technologies will allow “self-healing” by automatically isolating faulted feeder segments, and restoring service to customers on the same feeder not impacted by the fault by closing feeder ties with adjacent feeders. Based on results of a pilot ASR installation on four feeders, it is estimated that these systems can improve the feeder's reliability performance indices by more than 50%. We will discuss PHI's Smart Grid Vision, the applied technologies, lessons learned from the pilot project, and demonstrate the operation of an ASR system.","PeriodicalId":19873,"journal":{"name":"PES T&D 2012","volume":"20 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2012-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91302056","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}
PES T&D 2012Pub Date : 2012-05-07DOI: 10.1109/TDC.2012.6281703
P. Jintagosonwit
{"title":"Implementation techniques of the IED and network monitoring system in IEC61850 SA","authors":"P. Jintagosonwit","doi":"10.1109/TDC.2012.6281703","DOIUrl":"https://doi.org/10.1109/TDC.2012.6281703","url":null,"abstract":"Substation automation using IEC61850 (IEC61850 SA) now is widely implemented by many power utilities around the world. Currently, communication architecture of IEC61850 SA is based on Ethernet and TCP/IP technology. Thus, the SA network consists of computers, Ethernet switches and many various IEDs such as protection relays and bay controls units (BCUs). The performance of most SA functions relies on rapid information transferring among IEDs such as tripping commands or blocking commands. Consequently, if any critical function cannot perform on certain time, then an undesired result may occur such as a bigger outage than it should be. Thus, the IED and network monitoring system (INMS) is proposed to monitor the communication health of IEDs including network devices and report alarms and information to maintenance crews for maintaining suspected devices before any critical function will perform. This paper presents in-house implementation techniques that to improve the existing SA by integrating a satisfactory IED and network monitoring function in order to enhance condition-based maintenance of IEC61850 devices.","PeriodicalId":19873,"journal":{"name":"PES T&D 2012","volume":"2 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2012-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90143083","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}
PES T&D 2012Pub Date : 2012-05-07DOI: 10.1109/TDC.2012.6281608
A. Mammoli, C. B. Jones, H. Barsun, D. Dreisigmeyer, G. Goddard, O. Lavrova
{"title":"Distributed control strategies for high-penetration commercial-building-scale thermal storage","authors":"A. Mammoli, C. B. Jones, H. Barsun, D. Dreisigmeyer, G. Goddard, O. Lavrova","doi":"10.1109/TDC.2012.6281608","DOIUrl":"https://doi.org/10.1109/TDC.2012.6281608","url":null,"abstract":"For the commercial building sector, the fraction of peak electric load due to cooling sometimes approaches 50%. Meeting this load can create severe problems for electric utilities. Building-scale thermal storage can turn this problem into a resource, allowing both a reduction of the peak demand on the electricity infrastructure, and the ability to absorb intermittent power production from renewable energy resources such as wind and solar PV. In this study, the effects of two types of distributed control of thermal storage resources are considered with respect to their effectiveness in load leveling and renewables uptake. It is found that both real-time pricing and stochastic control strategies can reduce peak loads substantially, and can react to the availability of renewable energy at the transmission level.","PeriodicalId":19873,"journal":{"name":"PES T&D 2012","volume":"46 1","pages":"1-7"},"PeriodicalIF":0.0,"publicationDate":"2012-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83732596","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}
PES T&D 2012Pub Date : 2012-05-07DOI: 10.1109/TDC.2012.6281579
G. K. Filho, F. Filho, R. Berti, A. A. Komessu, M. Masuda, M. Jardini, J. Jardini
{"title":"A computational system for dynamic capacity analysis of distribution circuits - Finite volume method (FVM)","authors":"G. K. Filho, F. Filho, R. Berti, A. A. Komessu, M. Masuda, M. Jardini, J. Jardini","doi":"10.1109/TDC.2012.6281579","DOIUrl":"https://doi.org/10.1109/TDC.2012.6281579","url":null,"abstract":"Currently the capacity of the circuit is calculated taking into account assumptions that turn out to underutilize the actual capacity of distribution networks with underground cables out, that due to the unavailability of information “on line” of each individual circuit and temperature at the time, length, arrangement in conduits, etc.. The loading of a cable or conductor is commonly called ampacity. Due to economic constraints and limitations because of lack of space, many dealers in the world are striving to increase the carrying capacity of cables in service and the new designed.","PeriodicalId":19873,"journal":{"name":"PES T&D 2012","volume":"30 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2012-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83792563","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}
PES T&D 2012Pub Date : 2012-05-07DOI: 10.1109/TDC.2012.6281454
R. Grabovickic, C. Labuschagne, N. Fischer, O. Glynn
{"title":"Protection of transformer-ended feeders using multifunction relays","authors":"R. Grabovickic, C. Labuschagne, N. Fischer, O. Glynn","doi":"10.1109/TDC.2012.6281454","DOIUrl":"https://doi.org/10.1109/TDC.2012.6281454","url":null,"abstract":"Modern digital multifunction relays provide protection, control, monitoring, metering, and communications functions at a fraction of the cost of old electromechanical relays. Because of their versatility, reliability, and lower cost, digital relays are becoming increasingly attractive to distribution power utilities in applications to solve specific protection and control problems. One such application is the protection of transformer-ended feeders (TEFs), which are very popular in some utilities. In this paper, we describe an application of digital multifunction relays for the protection of a feeder that ends with a distribution transformer. In this application, we attempt to provide as many protection functions as possible with the fewest relays. The application we describe is similar to that used at ENERGEX (a distribution power utility in Brisbane, Australia), in which two directional overcurrent relays protect both a feeder and a transformer. The relay located at the low-voltage (LV) side also provides restricted earth fault (REF) transformer protection and breaker failure protection as well as backup overcurrent, ground, and sensitive earth fault protection for a distribution network. In the application we describe, the LV relay also combines with existing feeder relays to provide LV busbar protection. We also present the results of simulations performed on a Real Time Digital Simulator (RTDS®), particularly regarding the selection of appropriate settings during transformer inrush conditions.","PeriodicalId":19873,"journal":{"name":"PES T&D 2012","volume":"35 1","pages":"1-10"},"PeriodicalIF":0.0,"publicationDate":"2012-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83799761","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}