Title :
Congestion management in Japan
Author_Institution :
Kansai Electr. Power Co. Inc., Hyogo
Abstract :
There are 10 regional Vertical Integrated Utilities in Japan, and these operate the individual regional systems. The tile-lines between adjacent utilities are used supplementary. On the other hand, Japan has stepped into next stage in its liberalization, and since April 2005 the customers who consume about 60% of total sales can choose their suppliers. There are two noteworthy elements in Japanese liberalization: a neutral organization and a wholesale power exchange. The neutral organization is unique, neither a regulator nor a system operator. The players in Japan\´s liberalization scheme discussed and published rules for tie-line use. There are two principles for tie-line use in Japan, upon which congestion management is based: "first come, first served," and "use it or lose it." The grid users do not need to pay for tie-line capacity allocation, but they need to pay a charge for the certain change of their plans posted to prevent intentional overestimates of capacity needs
Keywords :
power markets; power system management; Japan; Japanese liberalization; Vertical Integrated Utilities; congestion management; first come, first served; individual regional systems; intentional capacity overestimation; neutral organization; tie-line capacity allocation; use it or lose it; wholesale power exchange; Capacity planning; Energy management; Frequency; Marketing and sales; Power markets; Power system interconnection; Power system management; Power system planning; Power transmission lines; Thermal stability;
Conference_Titel :
CIGRE/IEEE PES, 2005. International Symposium
Conference_Location :
New Orleans, LA
Print_ISBN :
0-7803-9191-8
DOI :
10.1109/CIGRE.2005.1532721