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Loss estimated methods in transmission line of northeastern transmission system |
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| รหัสดีโอไอ | |
| Creator | 1. Heuangsixayphone Dalasene 2. Kittipong Tonmit 3. jittipath Triyangkulsri |
| Title | Loss estimated methods in transmission line of northeastern transmission system |
| Publisher | Faculty of Engineering, Khon Kaen Univeristy |
| Publication Year | 2556 |
| Journal Title | KKU Engineering Journal |
| Journal Vol. | 40 |
| Journal No. | 2 |
| Page no. | 155-161 |
| Keyword | Transmission line loss system ,Power flow system ,Transmission line resistance,Dispatching center |
| ISSN | 0125-8573 |
| Abstract | T Normally the electrical power loss in transmission line can be determine in several method but this method proposes a power loss calculation through the current squared and multiplies by resistance (3I2R). The electrical current number is derived from the result of power divide by voltage, In order to get the electrical current number flowing in individual transmission line, the data can be retrieved from the EGAT SCADA of Northeastern power system center. The data which includes voltage, real power and appearance power will be used to estimate the loss of the power system there are totally 127 power circuits and 50 stations. The calculation data calculate use every 30 minutes from January to May 2011. By this way, the actual power loss from individual lines can be properly determined for further loss improvement opportunity. This power loss calculation is evaluated by comparing with another two methods. The simulation test is done by disconnected some transmission lines which are significant impact to the whole system. As the result of testing, the proposed power loss calculation method 3 is equal 85.58 MW, method 2 is equal 85.83 MW and method 1 is equal 90.32 MW. From the comparison method 3 and 2 are nearly but method 1 a little bit change of the time. |
