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Greenbyte Documentation

Lost Production (Time-based IEC) & Time-based IEC Availability

This defines how the Time-based Lost production is calculated due to low availability, according to a corresponding Time-Based IEC Availability signal.

The following signals are covered:

Lost Production Signal

Availability Signal

Availability Signal, IEC Name

Lost Production (Time-based IEC B.2.2) - 249

Time-based IEC B.2.2 (Users View) - 241

Time-based Operational Availability

Lost Production (Time-based IEC B.2.3) - 250

Time-based IEC B.2.3 (Users View) - 242

Time-Based Operational Availability Calm

Lost Production (Time-based IEC B.2.4) - 251

Time-based IEC B.2.4 (Users View) - 243

Time-Based Turbine Operational Availability

Lost Production (Time-based IEC B.3.2) - 252

Time-based IEC B.3.2 (Manufacturers View) - 244

Time-Based Technical Availability

Technology

Wind

Remarks

The calculation will use the Cascading Potential Power signal, see also Cascading Potential Power - Wind.

The external documentation has a complementary description of each and one of those signals:

Equation

Lost Production (Time-based IEC)

Lost_Production__Time-based_IEC____Time-based_IEC_Availability_-_Equation_1.png

Where:

ELP,IEC

is the Lost production (Time-based IEC)

AT,IEC

is the Availability (Time-based IEC)

Eactual

is the actual production

Epotential

is the potential production

P

is the Power (5)

Ee

is the Energy Export (4)

Pcp

is the Cascading Potential Power (1457)

T

is the device resolution in hours

Time-based IEC Availability

The calculation has 3 concepts of blocks of time: Available, Unavailable, and Excluded.

The output is a percentage indicating the ratio of available to unavailable time.

Excluded time is not considered. Allocation of available time and unavailable time is based on stop statuses and warnings.

For each time period, the turbine will always be seen as Available if there is no status and cut-outPC < w < cut-inPC

If this is not true, it will still be seen as Available, unless:

  • There is no status or the status is a Warning, and neither w nor P exists, where the period will be seen as Excluded.

  • The status is uncategorized, P < = 0 and this is a Stop status, where the period will be seen as Unavailable.

Where:

P

is the Power

w

is the Wind speed

cut-inPC

is the Power Curve Cut-in

cut-outPC

is the Power Curve Cut-out

The availability is then calculated as the sum of time periods, according to the resolution:

Lost_Production__Time-based_IEC____Time-based_IEC_Availability_-_Equation_2.png

Where:

AT,IEC

is the Availability (Time-based IEC)

Ta

is the amount of time where data is Available

Tu

is the amount of time where data is Unavailable

Inputs

Lost Production (Time-based IEC)

Lost_Production__Time-based_IEC____Time-based_IEC_Availability_-_Inputs_1.png

Time-based IEC Availability

Lost_Production__Time-based_IEC____Time-based_IEC_Availability_-_Inputs_2.png
Usage Example

This section will be updated later.