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Development of Autonomous Demand Area Power System -Operation and control for regulation of system voltage-

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2 Author(s)
Uemura, S. ; Central Res. Inst. of Electr. Power Ind. ; Kobayashi, H.

In 6.6 kV power distribution system of Japan, the introduction of many distributed power generations (DGs) is expected. Under such circumstances, power flow congestion and voltage fluctuation on distribution lines caused by varied output of the DGs will occur. This will result in a failure to maintain power quality and supply reliability by conventional power system management. In this paper, we have proposed a new power supply system referred to as the Autonomous Demand Area Power System (ADAPS). ADAPS may be in the loop formation, in addition to the conventional tree branch form. We try to establish network technology and operation management technology of ADAPS, and identify its effectiveness. Using real scale experimental equipments, we performed reducing the voltage fluctuation caused by changing load and output of DGs, and regulating the system voltage by collecting system information via Supply and Demand Interfaces and controlling Loop Power Flow Controllers. Therefore, we checked that the operation method (by Operation Control System) of ADAPS was effective in the viewpoint of voltage regulation. Moreover, we studied on suitable voltage regulation method (control voltage rise of DG, SVC control and LPC control) according to interconnection rate of DG by computer simulation about regulating system voltage in residential and commercial area models.

Published in:

SmartGrids for Distribution, 2008. IET-CIRED. CIRED Seminar

Date of Conference:

23-24 June 2008

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