After diversity maximum demand (ADMD) is an index that industry uses to determine what size to make electricity wires as explained in the literature review.

There were two different ADMD values calculated for each scenario due to time constraints within the project. Ideally, to calculate the diversity of each scenario, random profile shifting would occur for each. This is because not everyone would turn their kettle on at exactly the same time for example, so simultaneous loads are not realistic in energy demand profiles at the substation level. The random profile shifting would have allowed the Tool to apply real diversity by the inclusion of an arithmetic algorithm to randomise the shifting of the load profiles. The Diversity Factor would have been an output of the Tool which would have given a more realistic ADMD value estimation. Due to the time constraints of the project this algorithm was not included in the functionality of the tool.

Since the Tool does not have randomised diversity, published diversity factors which were dependant on the number of homes within a scenario, were applied. However, the published diversity factors that were used within the tool were not convincing as the group were sceptical of the validity of these values and so were not ideal for the purposes of the ADMD results. For this reason and for the purpose of the results, a worst case ADMD was assumed which effectively dismissed diversity. In reality the real ADMD values were considered to be somewhere in-between the diversified and the worst case. As an aside, the Diversity Factors can be changed according to user preference upon download.

Since the Tool does not have randomised diversity, published diversity factors which were dependant on the number of homes within a scenario, were applied. However, the published diversity factors that were used within the tool were not convincing as the group were sceptical of the validity of these values and so were not ideal for the purposes of the ADMD results. For this reason and for the purpose of the results, a worst case ADMD was assumed which effectively dismissed diversity. In reality the real ADMD values were considered to be somewhere in-between the diversified and the worst case. As an aside, the Diversity Factors can be changed according to user preference upon download.

Table 1 below, displays both the diversified and the worst case ADMD. The published ADMD value on a per home basis and relative to the housing model was 9kW (Networks, 2013). In general this meant that all values below the value of 9kW was within the wire capacity and the values above 9kW were out with the wire capacity.

For the purpose of the results and conclusions, the predicted worst case ADMD was assumed as the actual ADMD value was thought to be somewhere between the diversified value that was established from the published diversity factors and the worst case.

The downloadable WRISC Tool will display results which include diversity from the published Diversity Factors.