Gas composition and quality for transmission

The dataset contains the hourly unvalidated gas composition and other gas quality parameters for the Danish Transmission as measured at Energinet’s gas quality measuring station in Egtved.

The values listed are for informational purposes only and are not suited for settlement purposes. Though Energinet consider the numbers to be true, we cannot guarantee the accuracy of the values. Energinet has neither verified nor approved the information.

The information can be auto validated by the user with the validation rules written for each factor in Meta Data.


Hour UTC

Comment

Please note that the format shown in the example applies to data download as JSON, XML or fetched through the API and is in accordance with the ISO 8601 standard. The format is slightly different when it is shown on screen or downloaded manually as CSV or XLSX. This is mainly due to readability and consideration for Excel users.

In preview (in the GUI) all timestamps are shown as (display convention) YYYY-MM-DD hh:mmZ e.g. 2017-07-14 08:00Z. The Z will remind viewers that this is UTC.

In download (CSV and XLSX) the date time are exported as YYYY-MM-DD hh:mm e.g. 2017-07-14 08:00. That is without the \u201cT\u201d and the \u201cZ\u201d and the seconds. Excel will recognize it as date-time. The user must remember the convention about time zones.

In download (JSON and XML) the full format is used YYYY-MM-DDThh:mmZ e.g. 2017-07-14T08:00Z.

Description

A date and time (interval), shown in UTC time zone, where the values are valid. 00:00 o\u2019clock is the first hour of a given day interval 00:00 - 00:59 and 01:00 covers the second hour (interval) of the day and so forth. Please note: The naming is based on the length of the interval of the finest grain of the resolution.

Format
Property constraint
Title

Hour UTC

Validation rules

Always full hours, i.e. minutes are 00

Size

17

Type

datetime

Example

2017-07-14T08:00Z

Unit
Name

HourUTC

Hour DK

Comment

On one normal day there will be 24 intervals.

When daylight saving times shifts there will be either 23 or 25 intervals.

Please note that the format shown in the example applies to data download as JSON, XML or fetched through the API and is in accordance with the ISO 8601 standard. The format is slightly different when it is shown on screen or downloaded manually as CSV or XLSX. This is mainly due to readability and consideration for Excel users.

In preview (in the GUI) all timestamps are shown as (display convention) YYYY-MM-DD hh:mm e.g. 2017-07-14 08:00. Please note that is no time zone indicator, showning that this is local (Danish) time.

In download (CSV and XLSX) the date time are exported as YYYY-MM-DD hh:mm e.g. 2017-07-14 08:00. That is without the \u201cT\u201d and the seconds. Excel will recognize it as date-time. The user must remember that this is local (Danish) time.

In download (JSON and XML) the format used is YYYY-MM-DDThh:mm e.g. 2017-07-14T08:00.

Description

A date and time (interval), shown in Danish time zone, where the values are valid. 00:00 o\u2019clock is the first hour of a given day, interval 00:00 - 00:59, and 01:00 covers the second hour period (interval) of the day and so forth.

Format
Property constraint
Title

Hour DK

Validation rules

Always full hours, i.e. minutes are 00

Size

17

Type

datetime

Example

2017-07-14T08:00

Unit
Name

HourDK

Methane

Comment
Description

Methane content of the natural gas

Format

([0-9]*[,])[0-9][0-9]

Property constraint
Title

Methane

Validation rules

[0;100]

Size

9.2

Type

number

Example

90

Unit

mole - %

Name

Methane

Ethane

Comment
Description

Ethane content of the natural gas

Format

([0-9]*[,])[0-9][0-9]

Property constraint
Title

Ethane

Validation rules

[0;100]

Size

9.2

Type

number

Example

5.00

Unit

mole - %

Name

Ethane

Propane

Comment
Description

Propane content of the natural gas

Format

([0-9]*[,])[0-9][0-9]

Property constraint
Title

Propane

Validation rules

[0;100]

Size

9.2

Type

number

Example

2.00

Unit

mole - %

Name

Propane

I-Butane

Comment
Description

I-butane/isobutane content of the natural gas

Format

([0-9]*[,])[0-9][0-9]

Property constraint
Title

I-Butane

Validation rules

[0;100]

Size

9.2

Type

number

Example

0.39

Unit

mole - %

Name

I-Butane

N-Butane

Comment
Description

N-butane content of the natural gas

Format

([0-9]*[,])[0-9][0-9]

Property constraint
Title

N-Butane

Validation rules

[0;100]

Size

9.2

Type

number

Example

0.05

Unit

mole - %

Name

N-Butane

I-Pentane

Comment
Description

I-pentane/isopentane content of the natural gas

Format

([0-9]*[,])[0-9][0-9]

Property constraint
Title

I-Pentane

Validation rules

[0;100]

Size

9.2

Type

number

Example

0.2

Unit

mole - %

Name

I-Pentane

N-Pentane

Comment
Description

N-pentane content of the natural gas

Format

([0-9]*[,])[0-9][0-9]

Property constraint
Title

N-Pentane

Validation rules

[0;100]

Size

9.2

Type

number

Example

0.11

Unit

mole - %

Name

N-Pentane

Hexane+

Comment
Description

Hexane and higher hydrocarbons content of the natural gas

Format

([0-9]*[,])[0-9][0-9]

Property constraint
Title

Hexane+

Validation rules

[0;100]

Size

9.2

Type

number

Example

0.04

Unit

mole - %

Name

Hexane_plus

Carbon dioxide

Comment
Description

Carbon dioxide content of the natural gas

Format

([0-9]*[,])[0-9][0-9]

Property constraint
Title

Carbon dioxide

Validation rules

[0;100]

Size

9.2

Type

number

Example

1.0

Unit

mole - %

Name

CarbonDioxide

Nitrogen

Comment
Description

Nitrogen content of the natural gas

Format

([0-9]*[,])[0-9][0-9]

Property constraint
Title

Nitrogen

Validation rules

[0;100]

Size

9.2

Type

number

Example

0.3

Unit

mole - %

Name

Nitrogen

Oxygen

Comment
Description

Oxygen content of the natural gas

Format

([0-9]*[,])[0-9][0-9]

Property constraint
Title

Oxygen

Validation rules

[0;100]

Size

9.2

Type

number

Example

0.1

Unit

mole - %

Name

Oxygen

Gross Calorific Value

Comment
Description

A term describing the amount of heat developed by combustion of one cubic metre of gas at constant pressure when the gas and air for the combustion have a temperature of 25\u00b0C, the combustion products being brought to that temperature and the water formed by the combustion being present in liquid state. The reference conditions for normal cubic metres are 0\u00b0C and 1 atm.

Format

([0-9]*[,])[0-9][0-9][0-9][0-9]

Property constraint
Title

Gross Calorific Value

Validation rules

[35:55]

Size

9.4

Type

number

Example

43.8149

Unit

MJ/Nm\u00b3

Name

GrossCalorificValue-MJ_per_Nm3

Net Calorific Value

Comment
Description

A term describing the amount of heat generated, when the tem-perature of the combustion air and the natural gas prior to com-bustion is 25\u00b0C, when the combustion products (flue gas) are cooled to 25\u00b0C, and when the water produced during combustion is present in the form of steam. The reference conditions for normal cubic metres are 0\u00b0C and 1 atm.

Format

([0-9]*[,])[0-9][0-9][0-9]

Property constraint
Title

Net Calorific Value

Validation rules

[30;50]

Size

9.4

Type

number

Example

39.6757

Unit

MJ/Nm\u00b3

Name

NetCalorificValue-MJ_per_Nm3

Wobbe Index

Comment
Description

The Wobbe index offers information about the heating effect a burner is exposed to during combustion of a fuel. The greater the Wobbe index, the greater the heating effect and thereby the greater the load on the burner. The load on a burner is thus directly proportional to the Wobbe index. Different gases with the same Wobbe index will impose the same load on the burner.

Format

([0-9]*[,])[0-9][0-9][0-9][0-9]

Property constraint
Title

Wobbe Index

Validation rules

[45;60]

Size

9.4

Type

number

Example

54.8543

Unit

MJ/Nm\u00b3

Name

WobbeIndex-MJ_per_Nm3

Normal Density

Description

Normal density is the mass of a normal cubic meter of gas. The reference conditions for normal cubic metres are 0\u00b0C and 1 atm.

Format

([0-9]*[,])[0-9][0-9][0-9][0-9]

Property constraint
Title

Normal Density

Validation rules

[0.5;1]

Size

9.4

Type

number

Example

0.8241

Unit

kg/Nm\u00b3

Name

NormalDensity

Relative Density

Comment
Description

The relative density aka the specific gravity is the density of natural gas divided by the density of air at the same pressure and temperature, and is an expression of the amount of heavier hydrocarbons that are in the natural gas.

Format

([0-9]*[,])[0-9][0-9]

Property constraint
Title

Relative Density

Validation rules

[0.5;1]

Size

9.2

Type

number

Example

0.63

Unit

kg/Nm\u00b3

Name

RelativeDensity

Methane Number

Comment

Per definition pure methane has a methane number of 100 and pure hydrogen a methane number of 0. A content of higher hydrocarbons than methane reduces the methane number while the CO2 content increases the methane number.

Currently not available

Description

A methane number characterises the gas’s knock tendency as a fuel for gas engines. It can be compared to the octane number for petrol.

Format

([0-9]*[,])[0-9]

Property constraint
Title

Methane Number

Validation rules

[50;120]

Size

3.1

Type

number

Example

71

Unit

Number

Name

MethaneNumber

Water dew point

Comment
Description

Water content of gas described as dew point at the absoluite pressure of 70 bar.

Format

([0-9]*[,])[0-9][0-9]

Property constraint
Title

Water dew point

Validation rules
Size

9.2

Type

number

Example

-8

Unit

\u00b0C

Name

WaterDewPoint

Hydrocarbon dew point

Comment
Description

The temperature for precipitation of liquid hydro carbons measured at the pressure with the highest hydrocarbon dew point.

Format

([0-9]*[,])[0-9][0-9]

Property constraint
Title

Hydrocarbon dew point

Validation rules
Size

9.2

Type

number

Example

-8

Unit

\u00b0C

Name

HydrocarbonDewPoint

Hydrogen sulphide

Comment

The Hydrogen Sulphide is measured as mg Sulphur/Nm3

Description

Hydrogen Sulphide content of the natural gas

Format

([0-9]*[,])[0-9][0-9]

Property constraint
Title

Hydrogen sulphide

Validation rules

[0;30]

Size

9.2

Type

number

Example

3.0

Unit

mg/Nm\u00b3

Name

HydrogenSulphide

Total sulphur

Comment

Given as mg Sulphur /Nm3

Description

Total Sulphur content of the un-odorized natural gas.

Format

([0-9]*[,])[0-9][0-9]

Property constraint
Title

Total sulphur

Validation rules

[0;50]

Size

9.2

Type

number

Example

5.0

Unit

mg/Nm\u00b3

Name

TotalSulphur