2013 66th Annual Conference for Protective Relay Engineers最新文献_第4页

Engineer it first — Before you test it! 首先设计它——在你测试它之前!

2013 66th Annual Conference for Protective Relay Engineers Pub Date : 2013-04-08 DOI: 10.1109/CPRE.2013.6822052

A. Apostolov, B. Vandiver

引用次数: 2

Engineering your substation network for protective relaying, automation and SCADA 为保护继电器、自动化和SCADA设计变电站网络

2013 66th Annual Conference for Protective Relay Engineers Pub Date : 2013-04-08 DOI: 10.1109/CPRE.2013.6822044

J. Bougie

引用次数: 1

100% Stator ground fault detection implementation at Hibbard renewable Energy Center 在Hibbard可再生能源中心实现100%定子接地故障检测

2013 66th Annual Conference for Protective Relay Engineers Pub Date : 2013-04-08 DOI: 10.1109/CPRE.2013.6822060

R. Hedding, Steven E. Schoenherr

{"title":"100% Stator ground fault detection implementation at Hibbard renewable Energy Center","authors":"R. Hedding, Steven E. Schoenherr","doi":"10.1109/CPRE.2013.6822060","DOIUrl":"https://doi.org/10.1109/CPRE.2013.6822060","url":null,"abstract":"An undetected stator ground fault on a large turbine generator can cause millions of dollars in damage and a larger amount of lost operating revenue during the time the generator is out of service being repaired. As Minnesota Power has been upgrading the protection on their generating units the grounding has been being upgraded from low impedance grounding to high impedance grounding. 100% stator ground protection has been being implemented. From a past project of relay upgrades at Minnesota Power's Laskin Energy Center the two generators do not have 100% stator ground fault detection. Due to the design of the generators, the use of third harmonic voltage to detect the stator ground fault is not reliable. When it was time to upgrade Minnesota Power's Hibbard Energy Center Unit 3 and Unit 4 generators, which are similar in design and size as the units at Laskin Energy Center, it was decided that different options needed to be explored to achieve 100% stator ground protection. Minnesota Power services 143,000 retail customers in northeastern Minnesota and wholesale electric service to 16 municipalities and some of the largest industrial customers in the country. MP operates five thermal power plants, and eleven Hydro Stations for a total production of 1500 Megawatts net.","PeriodicalId":221348,"journal":{"name":"2013 66th Annual Conference for Protective Relay Engineers","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114943855","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}

引用次数: 0

Protections to consider with Automatic Bus Transfer Scheme 自动巴士转乘计划要考虑的保护措施

2013 66th Annual Conference for Protective Relay Engineers Pub Date : 2013-04-08 DOI: 10.1109/CPRE.2013.6822023

J. Cramond, A. Carreras, V. Duong

{"title":"Protections to consider with Automatic Bus Transfer Scheme","authors":"J. Cramond, A. Carreras, V. Duong","doi":"10.1109/CPRE.2013.6822023","DOIUrl":"https://doi.org/10.1109/CPRE.2013.6822023","url":null,"abstract":"Automatic Bus Transfer Scheme (ABTS) provides many benefits to electric power system control and automation operations. In a Main-Tie-Main (M-T-M) bus configuration consisting of two independent sources with a normally open tie breaker, the ABTS offers a quick way to automatically restore a bus that is affected by a loss of its own main source. Automatic retransfer can be done by opening the tie breaker and closing the affected main breaker upon the return of the source. With advanced technology in microprocessor relays, especially coupled with GOOSE application, implementing ABTS can achieve operational speed and reliability and reduced investment cost. However there are complicated system protection and coordination issues that could be overlooked; including: ; Circuit breaker trip and close coil conditions : Motor inrush from the affected bus, Transformer and/or main feeder overload from the healthy bus : Sync check for both buses after recovery of the affected main source : Tie breaker switch onto fault : Protection coordination with sub-feeder close-in fault : Breaker failures : Main bus protection without bus differential relay. This technical paper will present a live project that implements the Automatic Bus Transfer Scheme. Discussion focuses on applying relay functions and logic to resolve the above mentioned system protection and coordination issues.","PeriodicalId":221348,"journal":{"name":"2013 66th Annual Conference for Protective Relay Engineers","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132794276","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}

引用次数: 6

Adding shaft angle measurement to generator protection and monitoring 在发电机保护和监测中增加轴角测量

2013 66th Annual Conference for Protective Relay Engineers Pub Date : 2013-04-08 DOI: 10.1109/CPRE.2013.6822062

G. Zweigle, D. Finney, R. Moxley

{"title":"Adding shaft angle measurement to generator protection and monitoring","authors":"G. Zweigle, D. Finney, R. Moxley","doi":"10.1109/CPRE.2013.6822062","DOIUrl":"https://doi.org/10.1109/CPRE.2013.6822062","url":null,"abstract":"Traditional protective relays for generators have used electrical quantities (current and voltage) to measure the condition of the machine. It has long been recognized that information about the machine can also be used in protection. New technology makes it possible to combine mechanical and electrical inputs. This paper examines the use of rotor shaft angle measurement in a generator combined with the electrical angle of the output voltage. This provides for the direct measurement of system conditions that could only be estimated or approximated with earlier technologies. Some of the protection, control, and situational awareness applications now possible include the following: Subsynchronous resonance detection and mitigation : Out-of-step detection : Machine parameter estimation and validation : Transient stability control. One significant improvement over previous applications that provided these functions is that no physical connection or significant modification of the shaft is necessary. As power grids operate closer to critical stability limits, the ability to measure and control precise shaft angle will provide the high reliability necessary for electric power.","PeriodicalId":221348,"journal":{"name":"2013 66th Annual Conference for Protective Relay Engineers","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130821029","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}

引用次数: 16

End-to-end testing transmission line protection schemes and double-ended fault locators 端到端测试传输线保护方案和双端故障定位器

2013 66th Annual Conference for Protective Relay Engineers Pub Date : 2013-04-08 DOI: 10.1109/CPRE.2013.6822051

S. Turner

引用次数: 2

Trust in a digital world — Examples of why we still test 数字世界中的信任——为什么我们仍在测试的例子

2013 66th Annual Conference for Protective Relay Engineers Pub Date : 2013-04-08 DOI: 10.1109/CPRE.2013.6822049

A. Apostolov, B. Vandiver

引用次数: 0

Using symmetrical components for internal external fault discrimination in differential protection schemes 差动保护方案中采用对称分量进行内外故障判别

2013 66th Annual Conference for Protective Relay Engineers Pub Date : 2013-04-08 DOI: 10.1109/CPRE.2013.6822028

Imran A. Rizvi, Gerry Reeser

{"title":"Using symmetrical components for internal external fault discrimination in differential protection schemes","authors":"Imran A. Rizvi, Gerry Reeser","doi":"10.1109/CPRE.2013.6822028","DOIUrl":"https://doi.org/10.1109/CPRE.2013.6822028","url":null,"abstract":"Classical differential protection schemes are subject to ghost differential currents due to CT saturation and magnetization currents. Several methods are used to counter the impact of these un-wanted differential currents. This paper will focus on using the symmetrical component techniques to stabilize differential protection schemes without sacrificing the speed and sensitivity of the protection. Negative sequence quantities are inherently present in any power system disturbances. Even in the case of a three phase symmetrical fault, negative sequence currents are present during the first few cycles of the fault as a result of the dc component. By accurately measuring the magnitudes and relative phase angles of the negative sequence currents leaving and entering into the differential zone can provide a very reliable indication of whether the fault is inside or outside of the protection zone. In addition, it can supplement the traditional restrained differential protection to achieve high levels of speed with very high sensitivity for high impedance faults. In transformer protection, turn to turn faults at the neutral points are typically difficult to detect. By using negative sequence quantities, these faults can be detected reliably.","PeriodicalId":221348,"journal":{"name":"2013 66th Annual Conference for Protective Relay Engineers","volume":"629 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116179824","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}

引用次数: 7

Protecting distribution substation assets — Modern protection schemes with microprocessor-based relays 配电变电站资产保护。基于微处理器的继电器的现代保护方案

2013 66th Annual Conference for Protective Relay Engineers Pub Date : 2013-04-08 DOI: 10.1109/CPRE.2013.6822033

L. Ayers, M. Lanier, L. Wright

{"title":"Protecting distribution substation assets — Modern protection schemes with microprocessor-based relays","authors":"L. Ayers, M. Lanier, L. Wright","doi":"10.1109/CPRE.2013.6822033","DOIUrl":"https://doi.org/10.1109/CPRE.2013.6822033","url":null,"abstract":"Distribution substations at electric cooperatives and municipal utilities have historically involved simple protection schemes consisting of feeder circuit overcurrent, reclosing, and transformer protection, either with high-side fuses or differential and overcurrent protection. These protective devices have served to protect the transmission operator as much or more than the distribution substation. Modern microprocessor-based relays allow for much better protection schemes to protect the distribution substation assets. This paper analyzes several schemes that have recently been implemented at Mid-Carolina Electric Cooperative in South Carolina. Benefits include: Faster tripping timesall zones in the substation are protected with differential relays. - Reduced arc-flash hazards for personnel. - Reduced equipment damage during faults; Backup protection schemes for each piece of equipment in the substation. - Backup feeder protection via transformer differential relays. - Detection of failed feeder relay and failed feeder breaker trip coil. - Backup bus differential via transformer differential low-side overcurrent. - Redundant transformer differential relays, one of which also includes the bus in the differential zone; Superior fault analysis through satellite clock time synchronization to all substation relays; Communications to each relay via an Ethernet network that provides both SCADA communications and engineering access for event retrieval.","PeriodicalId":221348,"journal":{"name":"2013 66th Annual Conference for Protective Relay Engineers","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122030949","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}

引用次数: 5

Standards based engineering of protection schemes and systems 基于保护方案和系统的标准工程

2013 66th Annual Conference for Protective Relay Engineers Pub Date : 2013-04-01 DOI: 10.1109/CPRE.2013.6822045

A. Apostolov, B. Vandiver

引用次数: 0