roseau.load_flow.types¶

Common types and enumerations.

Classes¶

`LineType`	The type of a line.
`Material`	The type of the material of the conductor.
`Insulator`	The type of the insulator for a wire.
`TransformerInsulation`	The insulation technology of power transformers.
`TransformerCooling`	IEC designations and descriptions of the cooling classes used in power transformers.

Module Contents¶

class LineType¶

Bases: roseau.load_flow.utils.helpers.CaseInsensitiveStrEnum

The type of a line.

Initialize self. See help(type(self)) for accurate signature.

OVERHEAD¶: An overhead line that can be vertically or horizontally configured – Fr = Aérien.

UNDERGROUND¶: An underground or a submarine cable – Fr = Souterrain/Sous-Marin.

TWISTED¶: A twisted line commonly known as Aerial Cable or Aerial Bundled Conductor (ABC) – Fr = Torsadé.

class Material¶

Bases: roseau.load_flow.utils.helpers.CaseInsensitiveStrEnum

The type of the material of the conductor.

Initialize self. See help(type(self)) for accurate signature.

CU¶: Copper – Fr = Cuivre.

AAC¶: All Aluminum Conductor (AAC) – Fr = Aluminium (AL).

AAAC¶: All Aluminum Alloy Conductor (AAAC) – Fr = Almélec (AM, AMC).

ACSR¶: Aluminum Conductor Steel Reinforced (ACSR) – Fr = Alu-Acier (AA).

AACSR¶: Aluminum Alloy Conductor Steel Reinforced (AACSR) – Fr = Almélec-Acier (LA).

class Insulator¶

Bases: roseau.load_flow.utils.helpers.CaseInsensitiveStrEnum

The type of the insulator for a wire.

Initialize self. See help(type(self)) for accurate signature.

NONE¶: No insulation.

HDPE¶: High-Density PolyEthylene (HDPE) insulation.

MDPE¶: Medium-Density PolyEthylene (MDPE) insulation.

LDPE¶: Low-Density PolyEthylene (LDPE) insulation.

XLPE¶: Cross-linked polyethylene (XLPE) insulation.

EPR¶: Ethylene-Propylene Rubber (EPR) insulation.

PVC¶: PolyVinyl Chloride (PVC) insulation.

IP¶: Impregnated Paper (IP) insulation.

class TransformerInsulation¶

Bases: roseau.load_flow.utils.helpers.CaseInsensitiveStrEnum

The insulation technology of power transformers.

Initialize self. See help(type(self)) for accurate signature.

DRY_TYPE = 'dry-type'¶: Dry-type transformer.

LIQUID_IMMERSED = 'liquid-immersed'¶: Liquid-immersed transformer.

GAS_FILLED = 'gas-filled'¶: Gas-filled transformer.

class TransformerCooling¶

Bases: roseau.load_flow.utils.helpers.CaseInsensitiveStrEnum

IEC designations and descriptions of the cooling classes used in power transformers.

Cooling class designations for liquid-immersed power transformers (IEC 60076-2):

		Letter	Description
Internal	First Letter (Cooling medium)	O	Liquid with flash point ≤ 300°C
		K	Liquid with flash point > 300°C
		L	Liquid with no measurable flash point
		G	Insulating gas (IEC 60076-15)
	Second Letter (Cooling mechanism)	N	Natural convection through cooling equipment and windings
		F	Forced circulation through cooling equipment, natural convection in windings
		D	Forced circulation through cooling equipment, directed from the cooling equipment into at least the main windings
External	Third letter (Cooling medium)	A	Air
	Third letter (Cooling medium)	W	Water
	Fourth Letter (Cooling mechanism)	N	Natural convection
	Fourth Letter (Cooling mechanism)	F	Forced circulation (fans, air blowers, water pumps)

Cooling class designations for gas-filled power transformers (IEC 60076-15):

Same as liquid-immersed transformers, but with the first letter always G (Insulating gas).
Cooling class designations for dry-type power transformers (IEC 60076-11):

Letter

Description

First Letter (Cooling medium)

A

Air

Second Letter (Cooling mechanism)

N

Natural convection

F

Forced circulation

	Letter	Description
First Letter (Cooling medium)	A	Air
Second Letter (Cooling mechanism)	N	Natural convection
F	Forced circulation

Initialize self. See help(type(self)) for accurate signature.

ONAN = 'ONAN'¶

Oil Natural/Air Natural.

Oil-air (self-cooled).

ONAF = 'ONAF'¶: Oil Natural/Air Forced, Forced-air.

ONAN_ONAF_ONAF = 'ONAN/ONAF/ONAF'¶

Oil Natural Air Natural/Oil Natural Air Forced/Oil Natural Air Forced.

Oil-air (self-cooled), followed by two stages of forced-air cooling (fans).

ONAN_ONAF_OFAF = 'ONAN/ONAF/OFAF'¶

Oil Natural Air Natural/Oil Natural Air Forced/Oil Forced Air Forced.

Oil-air (self-cooled), followed by one stage of forced-air cooling (fans), followed by 1 stage of forced oil (oil pumps).

ONAN_ODAF = 'ONAF/ODAF'¶

Oil Natural Air Natural/Oil Direct Air Forced.

Oil-air (self-cooled), followed by one stage of directed oil flow pumps (with fans).

ONAF_ODAF_ODAF = 'ONAF/ODAF/ODAF'¶

Oil Natural Air Forced/Oil Direct Air Forced/Oil Direct Air Forced.

Oil-air (self-cooled), followed by two stages of directed oil flow pumps (with fans).

OFAF = 'OFAF'¶

Oil Forced Air Forced.

Forced oil/air (with fans) rating only – no self-cooled rating.

OFWF = 'OFWF'¶

Oil Forced Water Forced.

Forced oil/water cooled rating only (oil/water heat exchanger with oil and water pumps) – no self-cooled rating.

ODAF = 'ODAF'¶

Oil Direct Air Forced

Forced oil/air cooled rating only with directed oil flow pumps and fans – no self-cooled rating.

ODWF = 'ODWF'¶

Oil Direct Water Forced

Forced oil/water cooled rating only (oil/water heat exchanger with directed oil flow pumps and water pumps) – no self-cooled rating.

KNAN = 'KNAN'¶: Less flammable liquid-immersed self-cooled.

KNAF = 'KNAF'¶: Less flammable liquid-immersed forced-air-cooled.

KFAF = 'KFAF'¶: Less flammable liquid-immersed forced-liquid-cooled (non-directed flow) with forced-air cooler.

KDAF = 'KDAF'¶: Less flammable liquid-immersed forced-liquid-cooled (directed flow) with forced-air cooler.

KNWF = 'KNWF'¶: Less flammable liquid-immersed self cooled with forced-water cooler.

KFWF = 'KFWF'¶: Less flammable liquid-immersed forced-liquid-cooled (non-directed flow) with forced-water cooler.

KDWF = 'KDWF'¶: Less flammable liquid-immersed forced-liquid-cooled (directed flow) with forced-water cooler.

LNAN = 'LNAN'¶: Liquid with no measurable flash point self-cooled.

LNAF = 'LNAF'¶: Liquid with no measurable flash point forced-air-cooled.

GNAN = 'GNAN'¶: Gas Natural/Air Natural.

GNAF = 'GNAF'¶: Gas Natural/Air Forced.

GFAF = 'GFAF'¶: Gas Forced/Air Forced.

GDAF = 'GDAF'¶: Gas Direct/Air Forced.

GNWF = 'GNWF'¶: Gas Natural/Water Forced.

GFWF = 'GFWF'¶: Gas Forced/Water Forced.

AN = 'AN'¶: Air Natural.

AF = 'AF'¶: Air Forced.

AN_AF = 'AN/AF'¶: Air Natural/Air Forced.

property type: TransformerInsulation¶: The type of the transformer based on the cooling class.