Please wait, while we are loading the content...
| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Lee, W.Y. Park, K.Y. Chong, J.K. Lee, B.Y. Kim, H.J. |
| Copyright Year | 2002 |
| Description | Author affiliation: Korea Electrotechnol. Res. Inst., Changwon, South Korea (Lee, W.Y.; Park, K.Y.; Chong, J.K.; Lee, B.Y.) |
| Abstract | This paper describes a method which determines the operating instants of the circuit breaker for controlled switching of shunt reactors independent of the network configuration, in order to reduce overvoltages and inrush currents. Some other previous papers offered the favorable instants for both isolated and directly earthed neutral case, but not for the earthed neutral through a reactor. The proposed method in this paper is based on two facts. First, the instant of a maximum voltage between contacts of the circuit breaker(CB) is the optimum point for closing to minimize the inrush current. And secondly, both the minimum arcing time of the CB and the current interruption instant of each poles should be considered as the reference for the opening instant. The performance of the proposed method was verified by the results of simulation studies using the electromagnetic transients program(EMTP). The behaviors of CB treated in the simulation involve the rate of decay of dielectric strength between contacts and the scatter of the operating time. Especially, the results of EMTP show that the closing and opening instants of the second one among the three poles shift continuously with the ratio of the impedance of a shunt reactor to that of the neutral reactor in the range of 30 phase angle, respectively. And also the maximum scatter of the CB closing time to ensure the inrush current of less than a certain level can be provided. |
| Starting Page | 1760 |
| Ending Page | 1765 |
| File Size | 378715 |
| Page Count | 6 |
| File Format | |
| ISBN | 0780375254 |
| DOI | 10.1109/TDC.2002.1177721 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2002-10-06 |
| Publisher Place | Japan |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Circuit breakers EMTP Electromagnetic scattering Voltage Dielectric breakdown Impedance Shunt (electrical) Inductors Surges Switching circuits |
| Content Type | Text |
| Resource Type | Article |
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...
|