Title page for ETD etd-08142006-110056
|Type of Document
||Ellis, Mikle Val
||The ladder load-flow method extended to distribution networks
|Broadwater, Robert P.
|De La Ree Lopez, Jaime
|Fabrycky, Wolter J.
|Herdman, Terry L.
- Electric networks Computer simulation.
|Date of Defense
The rigorous load-flow analysis of Distribution Networks requires the
modeling of mutual coupling, multiphase possibilities and unbalanced
loading. The Ladder Load-Flow Method meets these requirements, but is
limited to radial systems. The Switch Compensation Method presented here,
extends the Ladder Load-Flow Method to solve Distribution Networks.
A network analysis program has been developed using the Electric
Power Research Distribution Engineering Workstation (DEWorkstation).
The program uses the pointers provided by the DEWorkstation to represent
the connectivity of the system. The use of these pointers increases the speed
of execution while naturally handling the sparsity of the system. The user is
also provided with "on line" attribute and topological data maintenance.
The extension technique is based on Thevenin's Theorem. This
approach allows the accurate determination of the equivalent impedance for
networks which contain series and shunt elements. The equivalent
impedance can be changed during the iterative solution process. This allows
the algorithm to simulate the operation of control devices which significantly
alter the impedance of the network. A transformer model for the forward
and reverse trace of the Ladder Method is also presented.
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