Protection in transmission system : a case study of the Northern Vietnam transmission system | |
| Author | Nguyen Ngoc Khanh |
| Call Number | AIT Thesis no.ET-04-12 |
| Subject(s) | Electric power transmission--Vietnam Electric power systems--Protection--Vietnam |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Environment Resources and Development |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. ET-04-12 |
| Abstract | Electricity is one of the fundamental resources of the modem industrial society. Electric power is available to the user instantly, at the correct voltage and frequency and exactly in the amount that is needed. This remarkable perfo1mance is achieved through careful planning, design, installation and operation of a very complex network. The power system is subject to constant disturbances created by random load changes, by faults created by natural causes and some times as a result of equipment or operator failure. The power system maintains its state because of two basic factors: the large size of the power system and cotTect and quick action taken by the protective equipment. System protection involves relatively primitive devices with limited capability to complex systems that involve extensive hardware. The modem protective systems are more selective in their detection and operation. An essential part of the design of a power supply network is the calculation of the currents when faults of various types occur. They are very useful for design and planning tasks. The magnitude of the fault currents gives the current settings for the protection to be used and the ratings of the circuit breakers. The study will be limited to 220kV transmission system in the North of Vietnam. Fault calculation is implemented for overcutTent and distance protection in: single line-to-ground fault; line-to-line fault; there phase balance fault; double line-to-ground fault. Software PowerWorld Simulator will be used for simulation and faults analysis. The study also designs a standard protection schematic, which should be used for practical implementation for 220KV transmission system of Vietnam in the future. |
| Year | 2004 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. ET-04-12 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Energy Technology (ET) |
| Chairperson(s) | Weerakorn Ongsakul; Mithulananthan, Nadarajah; |
| Examination Committee(s) | Surapong Chirarattananon; Shrestha, Ram Manohar |
| Scholarship Donor(s) | Electricity of Viet Nam; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 2004 |