Networks
ETMoses explicitly models all three relevant energy networks: the electricity network, the gas network and the heat network. This allows for comparison of different options to distribute and use energy and makes it possible to exchange energy between the network to avoid congestion on one of them. Details on these networks can be found in the specific subsections.
ETMoses determines the number of connections to the electricity, gas and heat network from the topology and the connected technologies. The number of connections is an important parameter in most market models. The sections below describe how the number of connections are determined for each of the networks.
ETMoses determines the number of electricity connections per node from the total number of base load units (i.e. the sum of the number of units Buildings and Households) for that node. If, e.g., a node has 10 units of Buildings and 50 units of Households, the number of electricity connections for that node is 60. In order to use this number of connections in a market model, the node has to be assigned to a stakeholder. The number of electricity connections for that stakeholder is equal to the sum of the number of electricity connections for all nodes belonging to that stakeholder.
If you want to assign different prices for different connections for customer groups and buildings, you have to make different nodes for them and assign different stakeholders.
The number of gas connections for a node in ETMoses follows the number of electricity connections, provided that a gas technology is connected. If a node has 10 electricity connections and at least 1 gas technology, the number of gas connections will be 10. If that same node (10 electricity connections) has no gas technologies installed, the number of gas connections will be 0. In order to use this number of connections in a market model, the node has to be assigned to a stakeholder. The number of gas connections for that stakeholder is equal to the sum of the number of gas connections for all nodes belonging to that stakeholder.
Example: If you have 10 electricity connections on one endpoint and 3 of them have heat pumps and 7 gastechnologies that need to be connected to the gas network for their heat and warm water supply, all ten endpoints are connected to the gas infrastructure in this case. If you want to have all-electric connections you would in this example have to make two end-points: one with gas technologies attached and 7 electricity base-loads (which is used to count the number of connections) and one end-point with 3 base-loads and the (electric) heat pumps.
The number of heat connections for a node is determined as the maximum of the number of units Households space heater district heating and Households water heater district heating in the technology matrix for that node. In order to use this number of heat connections in a market model, the node has to be assigned to a stakeholder. The number of heat connections for that stakeholder is equal to the sum of the number of heat connections for all nodes associated with that stakeholder.
For more details see here.
