°æÁ¦¼º ºÐ¼®Àº »ç¾÷ÀÇ ÀÌÀͰú Àüü ºñ¿ëÀ» »êÃâ / ºñ±³ ÇÔÀ¸·Î½á ÇöÀç ÁøÇà ÇÒ »ç¾÷ÀÇ Å¸´ç¼ºÀ» ºÐ¼® Çϴµ¥ ¸ñÀûÀÌ ÀÖ´Ù.
Process of the Analysis
- Least Cost Analysis (ÃÖÀú ºñ¿ë ºÐ¼®)¸¦ ÅëÇØ »ç¾÷¹æÇâ ¹× ¹æ¹ý ¼³Á¤
- °¢Á¾ ºñ¿ë ¹× ¿¹»ó ¼öÀÍÀ» °è»ê
- °è»êµÈ ³»¿ëÀ» ÅëÇÏ¿© Economic Analysis(°æÁ¦¼º ºÐ¼®) ½Ç½Ã
- °è»êµÈ ³»¿ëÀ» ÅëÇÏ¿© Financial Analysis(À繫ºÐ¼®) ½Ç½Ã
- ºñ¿ëÀÇ Áõ°¡ ¶Ç´Â °¡°ÝÀÇ º¯È¿¡ ´ëÀÀÇϱâ À§ÇØ Sensitivity Analysis¸¦ ½Ç½ÃÇÏ¿©
»ç¾÷ÀÇ ½ÇÇà °¡´É¼ºÀ» ÃÖÁ¾ÀûÀ¸·Î È®ÀÎÇÑ´Ù
Introduction

Consideration of Alternatives for Executing Projects
(»ç¾÷ ½ÇÇàÀ» À§ÇÑ »ç¾÷ ¹æ¹ý °±¸)
Consider the Supply Options (Àü·Â °ø±Þ ¼±ÅÃÀÇ °±¸)
įº¸µð¾ÆÀÇ Àü·Â ¸¶½ºÅÍ Ç÷£ÀÇ °æ¿ì 2°¡Áö OptionÀÌ °í·Á µÇ¾ú´Ù
1. Construction of Medium-Speed Diesel Plant(¹ßÀü¼ÒÀÇ °Ç¸³)
2. Import Electricity from Other Nation and Construct Transmission Line
(Ÿ ±¹°¡¿¡¼ÀÇ Àü·Â ¼öÀÔ°ú ¼ÛÀü¼± °Ç¼³)
Make a Decision of Discount Rate for Calculating the Net Present Value(¼ø ÇöÀç°¡Ä¡)
°¢ Option¿¡ ´ëÇÑ ºñ¿ëÀ» »êÁ¤Çϰí NPV¸¦ ±¸ÇÑ´Ù
°¢°¢ÀÇ °æ¿ì¿¡ ´ëÇÑ NPV ¸¦ ºñ±³ÇÏ°í ºñ±³ °á°ú¸¦ Åä´ë·Î Supply OptionÀ» ¼±ÅÃÇÑ´Ù.
Discount Rate and Calculation of Each Total Cost (Discount Rate ¹× ÃÑ ºñ¿ëÀÇ »êÃâ)
Discount Rate = 12%
°ø°øÁ¤Ã¥ÀÇ °æ¿ì Discount RateÀº Á¤ºÎÀÇ Á¤Ã¥À̳ª ÀÔ¹ý¾ÈÀÇ ÀǰÅÇÏ¿© °áÁ¤µÇ¾î Áø´Ù
Total Cost of Medium-Speed Diesel Plant (¹ßÀü¼Ò °Ç¸³À¸·Î ÀÎÇÑ ÃÑ ºñ¿ë »êÃâ)
= Investment for Generator + Investment for Distribution + Operating Expenses
¢Ñ Operating Expenses = O&M of Distribution + Fuel Cost + Fixed O&M + Variable O&M
Âü°í : O&M = Operation and Maintenance Cost
Total Cost of 115kv Transmission Line (¼ÛÀü¼± °Ç¼³·Î ÀÎÇÑ ÃÑ ºñ¿ë »êÃâ)
= Investment for Transmission + Investment for Distribution + Energy Import + O&M
¢Ñ O&M = O&M of Transmission + O&M of Distribution
Calculation of Net Present Value (NPV) and Comparison
(¼ø ÇöÀç°¡Ä¡ÀÇ »êÃâ ¹× ºñ±³ºÐ¼®)
Deriving of NPV with 12% of Discount Rate
??? ¡Ø values = Total Cost in Project Year
¡Ø i = years
¡Ø rate = discount rate (12%)
2°¡Áö ¼±ÅÃÀû ¿É¼ÇÀÇ NPV°¡ »êÃâÀÌ µÇ¸é 2°¡Áö ¿É¼Ç¿¡ ´ëÇÑ ºñ±³ºÐ¼® ½Ç½Ã
2°¡Áö ¿É¼Ç Áß NPV°¡ ³·Àº ¿É¼ÇÀÌ »ç¾÷¹æ¹ýÀ¸·Î äÅÃÀÌ µÈ´Ù.
Economic Analysis
¢Ñ ÀûÀýÇÑ °æÁ¦Áö¼ö¸¦ ÀÌ¿ëÇÏ¿© ºñ¿ë°ú ÀÌÀÍÀ» ºñ±³ÇÔÀ¸·Î½á ÅõÀÚ¸¦ °áÁ¤ÇÏ´Â ºÐ¼® ¹æ¹ý
°ü·Ãºñ¿ëÀÇ °áÁ¤ ¹× »êÃâ
»ç¾÷ÀÇ °èȹ ¹× ¿î¿µ Á¤¸³
»ç¾÷ÀÌÀÍÀÇ ¼ö·®È
°æÁ¦ºÐ¼®À» À§ÇÑ Å¸´çÇÑ °¡Á¤ ¼³¸³
EIRR, NPV, Benefit / Cost Ratio˂ Ȑ̉
Base, Lower, Upper 3°¡Áö À¯ÇüÀÇ ½Ã³ª¸®¿À¸¦ ÅëÇÑ °æÁ¦ºÐ¼®
3°¡Áö ½Ã³ª¸®¿À´Â ¼ö¿ä¿¹Ãø °á°ú¿¡ ÀÇÇØ ¼º¸³µÈ´Ù
°á°úȹµæ
°áÁ¤À» À§ÇÑ ºñ±³ºÐ¼® ½Ç½Ã
Economic Costs
: includes Investment Costs, O&M Costs of the Transmission System, O&M Costs of Distribution Line, and Energy Import Costs
Investment Cost
= Costs of Transmission Line, Distribution Line, and Low Voltage Line + Substation Construction
+ Civil Work + Engineering + Administration
¡Ø Excludes Taxes and Duties
Operation and Maintenance (O&M) Costs of the Transmission System
= Costs of day to day Operation of the Line = estimated at 2.5% of the Investment Costs from last project
Operation and Maintenance (O&M) Costs of Distribution Line
= estimated at 2.5% of the distribution line investment costs from last project
Cost of Energy Import
= The last project assumed 6.5 US cents / kWh, Energy is imported from Vietnam, and the purchased
price is
based on EdC average import price from Vietnam in year 2004
Economic Benefits
: »ç¾÷À¸·Î ¹ß»ýµÇ´Â ¼ö·®ÈµÈ °æÁ¦ÀÌÀÍÀº Àü·Â ÆÇ¸Å·®À¸·ÎºÎÅÍ ±âÀÎÇÑ´Ù
Àü·Â ÆÇ¸ÅÀÌÀÍÀ» ÃßÁ¤ Çϱâ À§ÇØ 3°¡Áö °¢±â ´Ù¸¥ Àü·Â ¿ä±ÝÀ» Àû¿ë
- 9 US cents / kWh
- 14 US cents / kWh
- 17 US cents / kWh
The Project Benefits = Total Energy Sales = Total Consumption ¥ª Tariff Rate
- »ç¾÷ÀÇ ÀÌÀÍ = ÃÑ Àü·Â ÆÇ¸Å·® = ÃÑ Àü·Â ¼ö¿ä ¥ªÀü·Â¿ä±Ý
»ç¾÷À¸·Î ÆÄ»ýµÇ´Â ¼ö·®È ÇÒ ¼ö ¾ø´Â ÀÌÀÍ
- °æÁ¦ÀÇ È°¼ºÈ
- ÀÏÀÚ¸® âÃâ
- ÀÓ±ÝÀÇ Àλó
- Àü·Â ¼ö¿äÀÚ¿¡°Ô ¾ÈÁ¤ÀûÀ̰í ÀûÀýÇÑ °¡°ÝÃ¥Á¤°ú Àü·Â °ø±ÞÀº ±¹°¡ÀÇ °æÁ¦¹ßÀü°ú ºó°ïÀÇ °¨¼Ò¸¦ ÆÄ»ý
Three Economic Analysis Criteria (Indicators)
: Economic Internal Rate of Return, Net Present Value, and Benefit-Cost Ratio
Economic Internal Rate of Return (EIRR) = °æÁ¦Àû ³»ºÎ ¼öÀÍ·ü
- It is the rate of discount at which the cost and benefit streams over the life of project equalized
(¸ðµç?Çö±Ý À¯ÀÔ ¹× ÃâÀÔÀÇ?Çö°¡ÀÇ?ÇÕÀ»?0À¸·Î?¸¸µå´Â?ÇÒÀÎÀ², ÀÏ·ÃÀÇ Çö±Ý È帧¿¡ ´ëÇÑ ³»ºÎ ¼öÀÍ·üÀ» ¹Ýȯ)
- »ç¾÷ÀÇ ½ÇÇàÀ» À§Çؼ´Â EIRRÀÇ °ªÀÌ Discount Rateº¸´Ù Ä¿¾ß ÇÔ
Net Present Value (NPV) = ¼ø ÇöÀç°¡Ä¡
- »ç¾÷À¸·Î ÀÎÇØ ÆÄ»ýµÈ ÅõÀÚÀÇ ÇöÀç°¡Ä¡
- ÀÏ·ÃÀÇ Á¤±âÀû Çö±Ý È帧°ú ÀÎÇÏÀ²À» ±âÁØÀ¸·Î ÅõÀÚ¿¡ ´ëÇÑ ¼ø ÇöÀç °¡Ä¡¸¦ ¹Ýȯ
- »ç¾÷ÀÇ ½ÇÇàÀ» À§Çؼ´Â NPVÀÇ °ªÀÌ 0º¸´Ù Å« °ªÀ» °¡Á®¾ß ÇÔ
Benefit-Cost Ratio (B/C Ratio) = ºñ¿ë´ëºñ ÀÌÀÍ ºñÀ²
- »ç¾÷ÀÌÀͰú »ç¾÷À¸·Î ÀÎÇÑ ºñ¿ëÀÇ ºñÀ²
- »ç¾÷ÀÇ ½ÇÇàÀ» À§Çؼ´Â B/C RatioÀÇ °ªÀÌ 1º¸´Ù Å« °ªÀ» °¡Á®¾ß ÇÔ
Sensitive Analysis
: Test the viability of the project if costs and tariff rate are increased
(»ç¾÷ÀÇ ºñ¿ëÀ̳ª Àü·Â ¼öÀÔ °ü¼¼°¡ »ó½ÂÇßÀ» ¶§ »ç¾÷ÀÇ ½ÇÇà °¡´É¼ºÀ» ºÐ¼® ÇÏ´Â °Í)
°¢Á¾ ºñ¿ëÀÌ »ó½Â ÇßÀ»¶§ÀÇ EIRRÀ» »êÃâ ÇÔÀ¸·Î½á »ç¾÷ ÁøÇà °¡´É¼ºÀ» ´Ù½Ã ºÐ¼® ÇÔ
- »ç¾÷ÀÇ ¼³ºñ ÅõÀÚ ºñ¿ëÀÌ 20% »ó½Â ÇßÀ»°æ¿ì
- Àü·Â ¼öÀÔÀÇ °ü¼¼°¡ 20% »ó½Â ÇßÀ»°æ¿ì
- ¼³ºñ ÅõÀÚ ºñ¿ë°ú Àü·Â ¼öÀÔ °ü¼¼°¡ µ¿½Ã¿¡ 20% »ó½Â ÇßÀ»°æ¿ì
¡Ø °¢ °æ¿ìÀÇ EIRRÀ» °¢ ½Ã³ª¸®¿À º°·Î »êÃâ Çϰí Discount Rate 12%¿Í ºñ±³ ºÐ¼® ÇÏ¿©
»ç¾÷ÀÇ
½ÇÇà ¿©ºÎ¸¦ ÆÇ´ÜÇÏ°Ô µÈ´Ù
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