Electricity network
On the level of a typical local energy solution (LES), the electricity network consists of one or several medium-voltage (MV) networks which support several low-voltage (LV) networks (see Figure 1 below for an example of a network topology).
The high-voltage (HV) net is assumed to lie outside of the testing ground and serves as a source/sink for demand/supply of electricity for the testing ground as a whole.
You can define the exact layout of the electricity network in your LES with a so-called topology. You can use an existing topology or create a new one. The details for this are described in the topologies section of this Wiki.
The most relevant electrical technologies are modelled explicitly in ETMoses. When added to a LES, each of these technologies will get a load profile assigned to it. These load profiles describe the load exerted on the end-point of the electricity network to which the technology is connected for each time step (usually 15 minutes). These profiles are described in detail in a dedicated section (profiles). The electrical technologies that are not modelled explicitly are grouped under base load and described by a base load profile. More on these base load profiles can be found under base loads.
ETMoses adds the loads for all technologies that are connected to a specific end-point at each time step. The total load on the end-point is then compared to the capacity of that end-point. Should the total load exceed the capacity the endpoint (a.k.a. node) will light up red. It is also possible to toggle the capacity switch, which will show the capacity of the node in the load diagram as a red line. Both features are shown in the figure below. More on the load charts can be found in the loads and flows section.
The loads on the higher-up nodes (typically MV and HV nodes) are calculated by adding the loads on all there "child" nodes (children).
Network congestion, i.e. total load on a network component or node exceeding its capacity, can be mitigated by shifting loads in time, by storing electricity or by converting electricity to gas or heat. ETMoses contains a set of pre-defined strategies to do exactly this; these strategies are described in detail in the strategies section of this Wiki.
If these strategies do not suffice to mitigate congestion, the network can be reinforced / components may have to be replaced. You can do this by creating a new LES and changing the capacity (and costs) in your topology (see topologies).
