Method for controlling coordination voltage of regional power grid and provincial power grid
Title：
Method for controlling coordination voltage of regional power grid and provincial power grid
Application Number：
 200710065588
Application Date：
 2007/04/17
Announcement Date：
 2007/09/19
Pub. Date：
Publication Number：
 101039031
Announcement Number：
Grant Date：
Granted Pub. Date：
ApplicationType：
 Invention
State/Country：
 11[China|beijing]
IPC：
 H02J 3/00H02J 3/04H02J 3/16G05B 13/00G05B 13/04
Applicant(s)：
 Tsinghua University
Inventor(s)：
 Sun Hongbin, Guo Qinglai, Zhang Boming, Wu Wenchuan, Wang Bin
Key Words：
 coordination voltage, regional power grid, provincial power grid, control method
Abstract：
 The invention relates to a coordinated secondary voltage control method of large district grid and provincial grid which belongs to electrical power system automatic voltage control technical field. The method employs characteristic values such as hinge node voltage at dividing place between the large district grid and the provincial grid and tie line reactive power and so on as a coordinated variable of wattless control of the large district grid and the provincial grid, and real-timely calculates an optimal set value of the coordinated variable in the large district grid which is sent down to the provincial grid via wide area communication. In the coordinated control of the provincial grid, the method can not only realize the control object of original grid, but can also realtimely track the optimal set value of the coordinated variable given by the large district grid. By employing the provided method, the independent AVC systems of the large district dispatching center and the provincial dispatching center can be coordinated thereby realizing optimal reactive voltage distribution in global region of the whole large district grid, so that grid loss can be effectively reduced, and voltage safety level of grid can also be improve.
Claim：
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PCT：
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2008-4-17
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