Derivation of line charge algorithms for Alpine Energy Limited
Degree GrantorUniversity of Canterbury
Degree NameMaster of Engineering
This report documents the work performed during 1997 by the author developing and examining possible line charge algorithms to be applied to the Alpine Energy Limited electrical distribution network. A database is created that enables three existing databases used by Alpine to be connected, allowing correlation of information across the databases. The most important effect of this is the ability to calculate the value of each segment in the network. A software package is created that performs the above action and allows the capital cost recovery from the network (in the form of line charges) to be calculated using a series of over ten thousand possible asset-based and installation-based methods. The software is highly adaptable and allows line charge investigations of a very diverse nature. Performance levels of assets may be calculated, along with identification of which customers in the network are being subsidised, and to what extent. All files used by and created by the software are in an easy to read, text based format. In the case of program output files, Microsoft Excel is the recommended package for analysis. In preparation for a possible move to a GIS based system at Alpine, the software has been designed to allow changes to the input files that would result from a move away from Gentrack without a major re-work to the software package. While the database created allows the asset register to be linked into a GIS environment. Algorithms have been built into the software that automatically check the validity of the database created for this project, enabling relatively straight-forward updating of this database.