Title :
Calculation of muti-power supplies short circuit based on distribution grid’s structure characteristics
Author :
Lantian, Weng ; Kaipei, Liu ; Xiaoli, Liu ; Po, Hu ; Yumin, Wang
Author_Institution :
Sch. of Electr. Eng., Wuhan Univ., Wuhan
Abstract :
Aiming at the structure characteristics of middling and lower voltage distribution network, this article advances a new algorithm for its short circuit calculation. Algorithm translates complex grid with several loops to some dendriform subnets with substitution theorem, and acquires voltage matrix equation by Theveninpsilas equivalent on power paths, calculates the current of broken node sequentially. The algorithm overcomes the troubles that take place in node matrix algorithm such as great spending for resistance, low agility of system reconstruct, and extents the localization to loop in direct analyzing algorithm. Last examples prove its availability, good efficiency and precision.
Keywords :
distributed power generation; matrix algebra; power grids; Thevenin equivalent; distribution grid structure characteristics; lower voltage distribution network; mutipower supplies short circuit; node matrix algorithm; resistance; short circuit calculation; substitution theorem; voltage matrix equation; Algorithm design and analysis; Circuit faults; Circuit topology; Councils; Equations; Impedance; Network topology; Power supplies; Sparse matrices; Voltage; complication analysis; level equivalent; loop; radial structure; short-circuit calculation; substitution theorem;
Conference_Titel :
Electrical Machines and Systems, 2008. ICEMS 2008. International Conference on
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-3826-6
Electronic_ISBN :
978-7-5062-9221-4
