Abstract:
Abstract
The 220 KV and 110 KV high voltage transmission system in the Southwest of Melkong Delta is operated by 4-PTC4 Power Transmission Company and brings the power from the Southern Electricity Transmission System, Phu Lam Station to twelve provinces and one centrally governed city. Up to now 148 km of 500 KV lines and 2181.45 km of 220 KV lines, 1779 km of 110 KV lines, 18 transformer stations of 220 KV, 93 transformer stations of 110 KV, 6 thermal power plants enure supplying of safe electricity for regional grid loads, transferring a large amount of power between districts and providing most of the load to the Southwestern provinces of Melkong Delta and providing electricity to Cambodia. As a result, the electric grid is becoming more and more complex and operating grids are at risk of near-insecure thresholds. Actual operation shows that when changes are made to the repair or in the event of a failure, instability occurs at some critical loads (especially out of range, large voltage fluctuations). Even some lines are overloaded in this place but are unloaded elsewhere, which makes the operating system not secure, causes local or system wide disruption, interrups supplying elctricity. On this basis, it is necessary to study and consider the operational safety of the power system, specifically for the Southwestern provinces of Melkong Delta and that is the purpose of this paper.
Keywords: Software POWER WORLD SIMULATOR (PWS), Transformer station, line, Power plan, Electricity Transmission Company, Thermal power plant.