SAInt Objects Overview

The following tables provide an overview of the main objects modelled in SAInt by network type.

1. Electric objects

Table 1. Icons and descriptions of the object types available in the electric network model.
Icon Type Name Description

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ENET

Electric Network

Models the characteristics and interactions of facilities and/or components of an electric network or market. Serves as a container for all objects in the electric network

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ESUB

Electric Sub

Models a subset of nodes, branches, and externals of an electric network. An electric sub is branch-oriented, i.e., only electric branches can be assigned to an electric sub, and every electric branch belongs to only one electric sub

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EZN

Electric Zone

Models a subset of nodes, branches, and externals of an electric network. An electric zone is node-oriented, i.e., only electric nodes can be assigned to an electric zone, and every electric node belongs to only one electric zone

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EGRP

Electric Group

Models a subset of different objects in an electric network. Except for the electric network, subs, and zones, any electric object can be added to an electric group. In contrast to electric subs and zones, electric groups do not follow any specific assignment rules. An object can be part of multiple groups

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ENO

Electric Node

Models a physical or virtual location in the electric network where electric power can be injected or extracted through externals (electric demand, generators, storages, etc.)

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LI

Electric Line

Models the transport of electric power between two locations

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TRF

Electric Transformer

Models a local increase (step-up) or decrease (step-down) of voltage between areas of different voltage levels

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EDEM

Electric Demand

Models the extraction (consumption) of electric power at a node

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ESTR

Electric Storage

Models the storage of electric energy in electric storage systems, such as battery, flywheel, or compressed air

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SHT

Electric Shunt

Models a shunt reactor or capacitor. Shunt reactors are placed locally to control the over-voltages at electric nodes under light load conditions (consume reactive power to reduce the nodal voltage), while shunt capacitors are used to boost the voltage in a stressed system (supply reactive power to increase the nodal voltage)

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EPS

Electric Prosumer

Models the injection and extraction of electricity from an external network or a device or facility that can generate and consume electricity without storage

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PHSTR

Pumped Hydro Storage

Models a storage facility that extracts electricity from the network for pumping water into a reservoir using an electric pump and injects electricity into the network by converting the potential energy stored in the reservoir to electric energy using a hydro generator. A pumped hydro storage is always connected to a hydro power plant

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XGEN

Generic Generator

Models a generator or an external network injecting electric power into the electric network

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HGEN

Hydro Generator

Models the injection of electric power from a hydro generator. The amount of electricity produced depends on the volumetric flow rate (TURB) driving the hydro turbines and a coefficient describing the active power generation per volumetric rate (PCOEFF). A hydro generator is always connected to a hydro power plant

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FGEN

Fuel Generator

Models the injection of electric power by a fuel generator that generates electricity by converting chemical energy stored in a fuel first into mechanical energy and then into electrical energy. A fuel generator requires a fuel object (oil, gas, coal, nuclear, etc.) for operation

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WIND

Wind Generator

Models the injection of electric power from a wind generator. The electric power generation profile for a wind generator can be generated from wind weather resource data and the characteristics of the wind generator (wind turbine power curve, hub height, etc.)

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PV

Solar Generator

Models the injection of electric power from a solar generator. The electric power generation profile for a solar generator can be generated from solar weather resource data and the characteristics of the solar generator (PanelType, Tilt Angle, etc.)

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FUEL

Fuel

Models the consumption and emission of the fuel used by one or more fuel generators

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HYDP

Hydro Plant

Models a hydro power plant consisting of one or more hydro generators. Water flows into the hydro power plant either from inflow (rain, etc.), water turbinated by another hydro power plant, or spillage from a hydro power plant. Hydro power plants have a maximum and minimum reservoir volume; the difference determines the volume that can be turbinated through a hydro generator. The hydro power plant has three outflow types, namely, outflow, turbination, and spilling

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ASVC

Ancillary Service

Models the ability of generators and demands to provide reserve capacity (upward or downward reserve) to the electric network in case of an unexpected contingency

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ASVCX

Ancillary Service External

Models the facilities contributing to an ancillary service

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ECNSTR

Electric Constraint

Models a user-defined linear equality or inequality constraint describing relations between the variables of different electric objects

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EVAR

Electric Variable

Models a variable of an electric object and its corresponding coefficient utilized in a user-defined constraint

2. Gas objects

Table 2. Icons and descriptions of the object types available in the gas network model.
Icon Type Name Description

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GNET

Gas Network

Models the characteristics and interactions of facilities and/or components of a gas network. Serves as a container for all objects in the gas network

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GSUB

Gas Sub

Models a subset of nodes, branches, and gas externals of a gas network. A gas sub is branch-oriented, i.e., only gas branches can be assigned to a gas sub, and every gas branch belongs to only one gas sub

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GZN

Gas Zone

Models a subset of nodes, branches, and externals of a gas network. A gas zone is node-oriented, i.e., only gas nodes can be assigned to a gas zone, and every gas node belongs to only one gas zone

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GGRP

Gas Group

Models a subset of different objects in a gas network. Except for the gas network, subs, and zones, any gas object can be added to a gas group. In contrast to gas subs and zones, gas groups do not follow any specific assignment rules. Thus, a gas object can be part of multiple gas groups

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GNO

Gas Node

Models a physical or virtual location in the gas network where gas can be injected or extracted through externals (gas demand, supply, storage, etc.)

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GPI

Gas Pipeline

Models the transport of gas between two distant locations

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GCS

Gas Compressor

Models the increase of inlet pressure to a higher outlet pressure to ensure continuous transport and delivery of gas to customers at the contracted nominations and delivery pressures

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GCV

Gas Control Valve

Models the reduction of inlet pressure to lower outlet pressure or the control of gas flow to a downstream network

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GVA

Gas Valve

Models a valve station, which is used to route the gas stream and shut down sections of the network for maintenance or in case of a disruption.

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GRE

Gas Resistor

Models passive devices that cause a local pressure drop, such as meters inlet piping, scrubbers, coolers, heaters, etc

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GSUP

Gas Supply

Models the injection of gas at a node

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GDEM

Gas Demand

Models the consumption of gas at a node

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GSTR

Gas Storage

Models the withdrawal and injection of gas from/into the storage inventory of an (underground) gas storage facility

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LNG

LNG terminal

Models the arrival of LNG-vessels and the discharge, storage, regasification, and injection of liquefied natural gas in an LNG regasification terminal

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GQUAL

Gas Quality

Models the thermo dynamic properties (gross/net calorific value, relative density, etc.) and the mixtures of different gas molecules (gas components) flowing through the network

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GCMP

Gas Component

Models the thermo dynamic properties (gross/net calorific value, relative density, etc.) of a gas molecule included in the gas mixture

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GCUS

Gas Component Usage

Models the molar percentage of mixture of a gas component included in a gas quality

3. Hubs objects

Table 3. Icons and descriptions of the object types available in the hub system.
Icon Type Name Description

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HUBS

Hub System

Models the operation of facilities coupling different energy network types. Serves as a container for all hub objects

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GFG

Gas-Fired Generator

Models the coupling between a Fuel Generator (FGEN) and a Gas Demand (GDEM)

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P2G

Power-To-Gas Facility

Models the coupling between an Electric Demand (EDEM) and a Gas Supply (GSUP). A prime example of a Power-To-Gas Facility is an electrolyzer plant, in which electric power is used to convert water into oxygen and hydrogen. The latter is then injected into the gas network

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EDGCS

Electric-Driven Gas Compressor

Models the coupling between an Electric Demand (EDEM) and a Gas Compressor (GCS). In an Electric-Driven Gas Compressor, electric power is converted into the mechanical power needed to increase the gas pressure

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EDGSTR

Electric-Driven Gas Storage

Models the coupling between an Electric Demand (EDEM) and a Gas Storage (GSTR). It models the electricity consumption needed to operate the gas storage

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EDLNG

Electric-Driven LNG Terminal

Models the coupling between an Electric Demand (EDEM) and an LNG Terminal (LNG). It models the electric power consumption needed to operate the LNG terminal

4. Thermal objects

Table 4. Icons and descriptions of the object types available in the thermal network model.
Icon Type Name Description

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TNET

Thermal Network

Models the characteristics and interactions of facilities and/or components of a thermal network. Serves as a container for all objects in the thermal network

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TSUB

Thermal Sub

Models a subset of nodes, branches, and thermal externals of an thermal network. A thermal sub is branch-oriented, i.e., only thermal branches can be assigned to a thermal sub, and every thermal branch belongs to only one thermal sub

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TZN

Thermal Zone

Models a subset of nodes, branches, and externals of a thermal network. A thermal zone is node-oriented, i.e., only thermal nodes can be assigned to a thermal zone, and every thermal node belongs to only one thermal zone

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TGRP

Thermal Group

Models a subset of different objects in a thermal network. Except for the thermal network, subs, and zones, any thermal object can be added to a thermal group. In contrast to thermal subs and zones, thermal groups do not follow any specific assignment rules. Thus, a thermal object can be part of multiple thermal groups

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TNO

Thermal Node

Models a physical or virtual location in the thermal network where heat (or cold) can be injected or extracted through externals

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TPI

Thermal Pipe

Models the transport of heat (or cold) between two distant locations

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HSUP

Heat Supply

Models the injection of heat at a node

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HDEM

Heat Demand

Models the consumption of heat at a node