oemof.core.network.entities package

Module contents

class oemof.core.network.entities.Bus(**kwargs)[source]

Bases: oemof.core.network.Entity

The other type of entity in an energy system graph (besides Components). A Bus acts as a kind of mediator between producers and consumers of a commodity of the same kind. As such it has a type, which signifies what kind of commodity goes through the bus.

Parameters:
  • type (string) – the type of the bus. Can be a meaningful value like e.g. “electricity” but may be anything that can be tested for equality and is distinct for incompatible Buses.
  • price (float) – price per unit of type
  • balanced (boolean) – if true a busbalance is created, otherwise the busbalance is ignored
  • sum_out_limit (float (default: +inf)) – limit of sum of all outflows over the timehorizon
  • TODO (#) –
  • excess (boolean) – if true, an optimization variable is created that takes up the slack of outflows to keep the busbalance (sum inflows = sum outflows + excess)
  • shortage (boolean) – if true, an optimization variable is created that takes the slack of inflows to keep the busbalance (sum inflows + shortage = sum outflows)
  • excess_costs (float) – costs per unit of excess that is needed to balance the bus
  • shortage_costs (float) – costs per unit of shortage that is needed to balance the bus
optimization_options = {}
class oemof.core.network.entities.Component(**kwargs)[source]

Bases: oemof.core.network.Entity

Components are one specific type of entity comprising an energy system graph, the other being Buses. The important thing is, that connections in an energy system graph are only allowed between Buses and Components and not between Entities of equal subtypes. This class exists only to facilitate this distinction and is empty otherwise.

Parameters:
  • in_max (list) – maximum input of component (e.g. in MW)
  • out_max (list) – maximum output of component (e.g. in MW)
  • add_out_limit (float) – limit on additional output “capacity” (e.g. in MW)
  • capex (float) – capital expenditure (e.g. in Euro / MW )
  • lifetime (float) – lifetime of component (e.g. years)
  • wacc (float) – weigted average cost of capital (dimensionless)
  • crf (float) – capital recovery factor: (p*(1+p)^n)/(((1+p)^n)-1)
  • opex_fix (float) – fixed operational expenditure (e.g. expenses for staff)
  • opex_var (float) – variable operational expenditure (e.g. spare parts + fuelcosts)
  • co2_var (float) – variable co2 emissions (e.g. t / MWh)
  • co2_cap (float) – co2 emissions due to installed power (e.g. t/ MW)
optimization_options = {}