Please wait, while we are loading the content...
| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Nicolae, P.-M. Mandache, L. Nicolae, I.-D. Sirbu, I.-G. |
| Copyright Year | 2009 |
| Description | Author affiliation: University of Craiova, Faculty of Electrotechnics, Decebal Blv., no. 107 Craiova, Romania (Nicolae, P.-M.; Mandache, L.; Nicolae, I.-D.; Sirbu, I.-G.) |
| Abstract | One presents the main disturbances sources from the distribution substations used for urban electric transportation systems: transformers from substations; three-phase supplying line; converters from substations; contact line and path rails. Using a quality analyzer, numerical recordings are obtained representing the waveforms of voltages and currents in a substation for the transformation medium to low voltage. The recorded data are transferred to a PC and processed, based on an original decomposition algorithm that implements the Fast Fourier Transform (FFT). The study case refers to a global consumption of a substation with an approximate active power of 590 kW and reactive power 65 kVAr. Harmonic decompositions of the recorded voltages and currents are made. One computes a series of quantities characteristic to the analyzed distorting regime (RMS values, total harmonic distortion for the phase voltages and phase currents, a.o.). The waveforms are afterward recomposed revealing that the computation error introduced by the decomposition algorithm is very small. The phases (re)active powers and total powers are determined. Interpretations of the determined values are provided. The analysis reveals the necessity to create a dedicated data acquisition system for each transformation substation in order to provide a complete monitoring system. Also should be useful the development of some real time recording and processing systems to realize a compensation efficient both from the distorting regime point of view and respectively from the compensation along the fundamental harmonic. |
| Starting Page | 1 |
| Ending Page | 10 |
| File Size | 307509 |
| Page Count | 10 |
| File Format | |
| ISBN | 9781424444328 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2009-09-08 |
| Publisher Place | Spain |
| Access Restriction | Subscribed |
| Subject Keyword | Substations Power transmission Harmonic analysis Distribution of electrical energy Power Quality Phase distortion Low voltage Total harmonic distortion Reactive power Control method for electrical systems Fast Fourier transforms Contacts Power management Transformers Rail transportation |
| 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...
|