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Çѱ¹¼öÀÚ¿øÇÐȸ / v.42, no.8, 2009³â, pp.643-657
Hedging RuleÀ» ÀÌ¿ëÇÑ ´ï ¿¬°è ¿î¿µ ÃÖÀûÈ­: ÇѰ­¼ö°è »ç·Ê¿¬±¸
( Optimization of Multi-reservoir Operation with a Hedging Rule: Case Study of the Han River Basin )
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È«¼ö±â¿¡ ÁýÁߵǴ À¯Ãâ·®À» °¥¼ö±â¿¡ ÀûÀýÈ÷ Ȱ¿ëÇϱâ À§ÇÑ ´ëÇ¥ÀûÀÎ ±¸Á¶¹°ÀÌ ´ïÀÌ´Ù. Á¦ÇÑµÈ ¿ë¼ö°ø±Þ·®À» ÀûÀýÈ÷ ºÐ¹èÇØ ¿ë¼ö¼ö¿ä·®À» ¸¸Á·½ÃŰ¸é¼­ ¹Ì·¡ °¥¼ö±â½Ã ¿ë¼ö°ø±ÞÀ» ´ëºñÇÏ¿© ´ï Àú·ù·®À» Á¶ÀýÇÏ´Â °ÍÀÌ ´ï ¿î¿µÀÇ Áß¿äÇÑ ¸ñÀû Áß ÇϳªÀÌ´Ù. º» ¿¬±¸¿¡¼­´Â °¥¼ö ½Ã ´ï Àú·ù·®¿¡ µû¶ó ´ï °èȹ¹æ·ù·®À» ÀÏÁ¤ºñÀ² ÁÙ¿©ÁÖ´Â Hedging RuleÀ» 5´Ü°è·Î Àû¿ëÇÏ¿© ´ïÀÇ »ó½Ã¸¸¼öÀ§ Àú·ù·®¿¡ ´ëÇÑ ½ÇÁ¦ Àú·ù·®ÀÇ ÆíÂ÷, ¼ö¿ä¿¡ ´ëÇÑ ¿ë¼ö°ø±Þ ºÎÁ··®, ±×¸®°í ÇÏõÀ¯Áö¿ë¼ö ºÎÁ··®À» ¸ñÀûÇÔ¼ö·Î ÇÏ¿© È¥ÇÕÁ¤¼ö ¼±Çü°èȹ¹ý(MILP, Mixed Integer Linear Programming)À¸·Î Àú¼öÁö ¿¬°è¿î¿µ¸ðÇüÀ» ±¸¼ºÇÏ¿´´Ù. ÇѰ­¼ö°èÀÇ ´Ù¸ñÀû´ïÀÎ ÃæÁÖ, Ⱦ¼º, ¼Ò¾ç°­ ´ï°ú ¿ë¼öÀü¿ë´ïÀÎ ±¤µ¿ ´ï, ±×¸®°í ¹ßÀü¿ë ´ïÀÌÁö¸¸ ºñ±³Àû Å« Àú·ù¿ë·®À» °¡Áø ȭõ ´ïÀ» ¿¬°è ¿î¿µ ´ë»óÀ¸·Î ÇÏ¿©, ¼öÀÚ¿øÀå±âÁ¾ÇÕ°èȹ¿¡ »ç¿ëµÈ 2003³â À¯Ãâ·® ¹× ¼ö¿ä·® ÀÚ·á¿Í ´ï ¿î¿µ ½Ç¹«Æí¶÷ÀÇ ´ï °èȹ¹æ·ù·® ÀڷḦ 10ÀÏ ´ÜÀ§·Î ÀÔ·ÂÇÏ¿© GAMS/CPLEX¸¦ ÀÌ¿ëÇØ ÃÖÀûÈ­ÇÏ¿´´Ù. ±× °á°ú »ý°ø¿ë¼ö ¼ö¿ä·® 99.99%, ³ó¾÷¿ë¼ö ¼ö¿ä·® 99.91%, ±×¸®°í ÇÏõÀ¯Áö¿ë¼ö ¼ö¿ä·® 100.00%¸¦ ÃæÁ·½ÃŰ¸é¼­µµ, ½ÇÁ¦ 2003³â ¿î¿µÀÚ·á¿¡ ºñ±³ÇÏ¿© ´ï Àú·ùÈ¿À²ÀÌ 10.04% °³¼±µÈ °á°ú¸¦ µµÃâÇÏ¿´´Ù.
The major reason to construct large dams is to store surplus water during rainy seasons and utilize it for water supply in dry seasons. Reservoir storage has to meet a pre-defined target to satisfy water demands and cope with a dry season when the availability of water resources are limited temporally as well as spatially. In this study, a Hedging rule that reduces total reservoir outflow as drought starts is applied to alleviate severe water shortages. Five stages for reducing outflow based on the current reservoir storage are proposed as the Hedging rule. The objective function is to minimize the total discrepancies between the target and actual reservoir storage, water supply and demand, and required minimum river discharge and actual river flow. Mixed Integer Linear Programming (MILP) is used to develop a multi-reservoir operation system with the Hedging rule. The developed system is applied for the Han River basin that includes four multi-purpose dams and one water supplying reservoir. One of the fours dams is primarily for power generation. Ten-day-based runoff from subbasins and water demand in 2003 and water supply plan to water users from the reservoirs are used from "Long Term Comprehensive Plan for Water Resources in Korea" and "Practical Handbook of Dam Operation in Korea", respectively. The model was optimized by GAMS/CPLEX which is LP/MIP solver using a branch-and-cut algorithm. As results, 99.99% of municipal demand, 99.91% of agricultural demand and 100.00% of minimum river discharge were satisfied and, at the same time, dam storage compared to the storage efficiency increased 10.04% which is a real operation data in 2003.
 
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´ï ¿¬°è ¿î¿µ;°¥¼ö±â ¿ë¼ö°ø±Þ;Hedging Rule;Multi-reservoir Operation;GAMS/CPLEX;MILP;Dry-Season Water Supply;
 
Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.42, no.8, 2009³â, pp.643-657
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200925836515253)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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