Adult-child power relations in Pasa Patee, a Thai textbook at the primary education level
This research is aimed to present technical loss analysis in Vientiane capital. Electricité du Laos (EDL), the state enterprise company that is responsible for transmission and distribution of electricity in Lao People’s Democratic Republic (Lao PDR). The purposes of this research studies are technical line losses and reduce power losses of distribution in Vientiane capital by using CYMDIST program as tool for simulation. The considering techniques for reducing losses are following: load balancing, power factor correction by fixed/switch capacitor banks or optimal capacitors placement and reconfiguration or switching optimization. The existences of distribution system are nine substations and 47 feeders. Technical losses were analyzed of Vientiane capital in 2013; total load demands were 333,460.01 kW and 1,416km of the total length. Firstly, in power flow analysis, 47 feeders in nine substations summarized total losses were 9,460.60kW. The technical losses reduction considered three techniques above can summarize losses reduction as follows: First technique, the total losses of using the load balancing technique decreases 21.64 kW or 189.57 MWH per year. The energy saving cost was 17,060.98 USD, for this case don’t have investment cost because the resulted of analyzed were re-phasing of phase A; B and C. Second technique, the capacitor placements were considered three values like 50 kVAR, 100 kVAR and 200 kVAR. The total losses of using the capacitor placement technique decreases 2,033.10 kW, 2,107.10 kW and 2,017.20 kW and saving cost were 1,603,054 USD, 1,661,238 USD and 1,590,360 USD, respectively. Finally technique, the switching optimization was considered 17 cases. The total losses of using the switching optimization technique decreases 1,861.10 kW and saving cost was 1,467,291 USD.