Create Customer List

Concept

The customer list is a table that maps loads and generators (from here on defined as customers) to a bus in the grid. A customer can only be mapped to one bus, but a bus can host several customers. As such, the relationship of buses to customers is $1:m$.

Loads

Loads in the customer list can be defined either by their rated power or by their yearly energy consumption.

The load distribution is generated based on the maximum measured load at the slack bus.

The loads in the customer list will be scaled according to the following principles:

• their sum plus network losses match the apparent power measured at the transformer (or slack bus)
• the scaling factor is the same for all loads (the relative power/energy between loads is kept)

The optimization problem can thus be defined as:

$\begin{array}{rl}\underset{c}{min}& \sum _{i=1}^N{P}_i+\sum _{j=1}^L{P}_{loss,j}-P_{slack}\\ \text{s.t.}& \text{Power Flow equations}\\ & P_i\ge 0,\mathrm{\forall }i\\ & P_i=c\cdot E_i,\mathrm{\forall }i\end{array}$

where

• $P_i$ is the scaled power of load $i$
• $P_{loss,j}$ is the power loss on the branch $j$ (line and transformer losses)
• $P_{slack}$ is the measured load at the slack bus
• $E_i$ is the yearly energy consumption of load $i$ from the customer list (can be replaced with the rated power depending on the option chosen)
• $c$ is the unknown scaling factor

Generators

Generators in the customer list are defined by their rated power. No scaling is applied to generators.

Example

To test the functionality, this example file can be downloaded. It can be used with the grid MV grid of the .Plan Examples package.