Please wait, while we are loading the content...
| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Paulsson, L. Ekehov, B. Halen, S. Larsson, T. Palmqvist, L. Edris, A.-A. Kidd, D. Keri, A.J.F. Mehraban, B. |
| Copyright Year | 1986 |
| Abstract | Voltage sourced converter-based transmission controllers, which use gate turn off switching components, introduce a new type of high voltage stress on insulation systems and materials. Fast switching components like IGBTs may generate or cause high-frequency voltages, which are superimposed upon the power frequency (50/60 Hz) voltage. Insulation within the station may thereby be continuously exposed to a new type of voltage stress, for which it has not been designed or tested. The high-frequency voltages may, under special circumstances, cause insulation damages at magnitude levels, which are well below the dielectric voltage withstand at power frequency. Compact insulation systems with resistive/refractive grading of the electrical field are particularly critical. Several compact type cable terminations rated 24 kV with resistive/refractive stressgrading have failed in the voltage soured converter-based back-to-back installation at Eagle Pass substation in the State of Texas. Through field measurements, laboratory tests, and simulations, the root cause of the failures has been identified. The compact cable terminations have been replaced by another type of termination, which is not sensitive to high-frequency voltages. The voltage sourced converter-based back-to-back installation in Eagle Pass is a joint ABB, EPRI, and AEP field demonstration project, which has been commissioned. |
| Sponsorship | IEEE Power Engineering Society |
| Starting Page | 1410 |
| Ending Page | 1415 |
| Page Count | 6 |
| File Size | 425303 |
| File Format | |
| ISSN | 08858977 |
| Volume Number | 18 |
| Issue Number | 4 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2003-10-01 |
| Publisher Place | U.S.A. |
| Access Restriction | One Nation One Subscription (ONOS) |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Dielectrics and electrical insulation Frequency Switching converters Stress control Voltage control Control systems Insulated gate bipolar transistors Power generation Insulation testing Substations |
| Content Type | Text |
| Resource Type | Article |
| Subject | Energy Engineering and Power Technology Electrical and Electronic Engineering |
National Digital Library of India (NDLI) is a virtual repository of learning resources which is not just a repository with search/browse facilities but provides a host of services for the learner community. It is sponsored and mentored by Ministry of Education, Government of India, through its National Mission on Education through Information and Communication Technology (NMEICT). Filtered and federated searching is employed to facilitate focused searching so that learners can find the right resource with least effort and in minimum time. NDLI provides user group-specific services such as Examination Preparatory for School and College students and job aspirants. Services for Researchers and general learners are also provided. NDLI is designed to hold content of any language and provides interface support for 10 most widely used Indian languages. It is built to provide support for all academic levels including researchers and life-long learners, all disciplines, all popular forms of access devices and differently-abled learners. It is designed to enable people to learn and prepare from best practices from all over the world and to facilitate researchers to perform inter-linked exploration from multiple sources. It is developed, operated and maintained from Indian Institute of Technology Kharagpur.
Learn more about this project from here.
NDLI is a conglomeration of freely available or institutionally contributed or donated or publisher managed contents. Almost all these contents are hosted and accessed from respective sources. The responsibility for authenticity, relevance, completeness, accuracy, reliability and suitability of these contents rests with the respective organization and NDLI has no responsibility or liability for these. Every effort is made to keep the NDLI portal up and running smoothly unless there are some unavoidable technical issues.
Ministry of Education, through its National Mission on Education through Information and Communication Technology (NMEICT), has sponsored and funded the National Digital Library of India (NDLI) project.
| Sl. | Authority | Responsibilities | Communication Details |
|---|---|---|---|
| 1 | Ministry of Education (GoI), Department of Higher Education |
Sanctioning Authority | https://www.education.gov.in/ict-initiatives |
| 2 | Indian Institute of Technology Kharagpur | Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project | https://www.iitkgp.ac.in |
| 3 | National Digital Library of India Office, Indian Institute of Technology Kharagpur | The administrative and infrastructural headquarters of the project | Dr. B. Sutradhar bsutra@ndl.gov.in |
| 4 | Project PI / Joint PI | Principal Investigator and Joint Principal Investigators of the project |
Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon |
| 5 | Website/Portal (Helpdesk) | Queries regarding NDLI and its services | support@ndl.gov.in |
| 6 | Contents and Copyright Issues | Queries related to content curation and copyright issues | content@ndl.gov.in |
| 7 | National Digital Library of India Club (NDLI Club) | Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach | clubsupport@ndl.gov.in |
| 8 | Digital Preservation Centre (DPC) | Assistance with digitizing and archiving copyright-free printed books | dpc@ndl.gov.in |
| 9 | IDR Setup or Support | Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops | idr@ndl.gov.in |
|
Loading...
|