Energy buffer systems to improve power network stability
Power electronics has seen increasing use in industries, to handle issues such as power quality and load management. Collectively, these loads will often present themselves as constant power load. De-stabilizing effects of the constant power loads, should a disturbance occurs, will pose a challenge...
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| Format: | Final Year Project (FYP) |
| Language: | English |
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2009
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| Online Access: | http://hdl.handle.net/10356/16723 |
| _version_ | 1826127124374749184 |
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| author | Tay, Keng Boon. |
| author2 | Choi San Shing |
| author_facet | Choi San Shing Tay, Keng Boon. |
| author_sort | Tay, Keng Boon. |
| collection | NTU |
| description | Power electronics has seen increasing use in industries, to handle issues such as power quality and load management. Collectively, these loads will often present themselves as constant power load. De-stabilizing effects of the constant power loads, should a disturbance occurs, will pose a challenge to power network operators, and has lead to various researches into ways to mitigate the effects. One such research has recommended the method of using Power Buffers, which are front-end convertors connected upstream of the network, to switch these loads between constant power and constant impedance. A stability study of such a method was therefore conducted in this project.
Using PSCAD, a simple two-machine power network was modeled. Connected loads were designed to be switchable between constant power and constant impedance modes. Simulation result shows that by switching the loads, enhanced stability of the power system is achieved. Further simulation shows that the critical clearing time of the power system can be increased significantly as compared to when the buffers are absent. |
| first_indexed | 2024-10-01T07:03:36Z |
| format | Final Year Project (FYP) |
| id | ntu-10356/16723 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:03:36Z |
| publishDate | 2009 |
| record_format | dspace |
| spelling | ntu-10356/167232023-07-07T16:59:18Z Energy buffer systems to improve power network stability Tay, Keng Boon. Choi San Shing School of Electrical and Electronic Engineering DRNTU::Engineering::Electrical and electronic engineering::Electric power::Production, transmission and distribution Power electronics has seen increasing use in industries, to handle issues such as power quality and load management. Collectively, these loads will often present themselves as constant power load. De-stabilizing effects of the constant power loads, should a disturbance occurs, will pose a challenge to power network operators, and has lead to various researches into ways to mitigate the effects. One such research has recommended the method of using Power Buffers, which are front-end convertors connected upstream of the network, to switch these loads between constant power and constant impedance. A stability study of such a method was therefore conducted in this project. Using PSCAD, a simple two-machine power network was modeled. Connected loads were designed to be switchable between constant power and constant impedance modes. Simulation result shows that by switching the loads, enhanced stability of the power system is achieved. Further simulation shows that the critical clearing time of the power system can be increased significantly as compared to when the buffers are absent. Bachelor of Engineering 2009-05-28T02:50:41Z 2009-05-28T02:50:41Z 2009 2009 Final Year Project (FYP) http://hdl.handle.net/10356/16723 en Nanyang Technological University 46 p. application/pdf |
| spellingShingle | DRNTU::Engineering::Electrical and electronic engineering::Electric power::Production, transmission and distribution Tay, Keng Boon. Energy buffer systems to improve power network stability |
| title | Energy buffer systems to improve power network stability |
| title_full | Energy buffer systems to improve power network stability |
| title_fullStr | Energy buffer systems to improve power network stability |
| title_full_unstemmed | Energy buffer systems to improve power network stability |
| title_short | Energy buffer systems to improve power network stability |
| title_sort | energy buffer systems to improve power network stability |
| topic | DRNTU::Engineering::Electrical and electronic engineering::Electric power::Production, transmission and distribution |
| url | http://hdl.handle.net/10356/16723 |
| work_keys_str_mv | AT taykengboon energybuffersystemstoimprovepowernetworkstability |