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ENERCON
Proposal for IEC 61400-25
LN Wind Power Plant Control and Monitoring System
Werner Bohlen Frank Fischer
• Control of Wind Power Plants
• Introduction of LN WCMS
• Modification of LN WTUR
Energy for the World
AG-Präsentation

ENERCON
Control of Wind Power Plants
Energy for the World
AG-Präsentation

ENERCON
Control of Wind Power Plants
• WPP Active Power Management (installed rated power of the WTGS of a
WPP extends grid capacity)
• WPP Active Power Management (control of active power initiated by the
utility due to grid status, e.g. e.on Erzeugungsmanagement)
• WPP Reactive Power Management (control of reactive power initiated by
the utility due to grid status, e.g. e.on extended grid connection rules)
• WPP Reactive Power Management (voltage control)
• WPP Controlling Power Range Management
Energy for the World
AG-Präsentation

WCMS Feature:
ENERCON
Control of Wind Power Plants
• Controller using setpoint values (from utility) and actual values (from
measurement unit).
Energy for the World
AG-Präsentation

WCMS Feature:
ENERCON
Control of Wind Power Plants
• Process Data Interface (to the utility) collecting data from the WTGs of the
WPP (resp. from subordinate WPPs) to generate values for available active
and reactive power of the WPP for controlling power range management.
Energy for the World
AG-Präsentation

WCMS Feature:
ENERCON
Control of Wind Power Plants
• Process Data Interface (to the utility) for active power gradients.
Energy for the World
AG-Präsentation

Measured Values / Processed Values
Available active power of WPP at PCC
ENERCON
Introduction of LN WCMS
Available reactive power generating of WPP at PCC
Available reactive power absorbing of WPP at PCC
Available power factor generating of WPP at PCC
Available power factor absorbing of WPP at PCC
Controls
Start command to the WPP
Stop command to the WPP
Settings
Demand value of active power generation of WPP at PCC
Demand value of reactive power generation of WPP at PCC
Demand value of power factor at PCC
Maximum allowable active power gradient after start of WPP
Minimum allowable active power gradient after change of demand value of active power generation of
WPP
Energy for the World
AG-Präsentation

ENERCON
Modification of LN WTUR
• Generating values for available active and reactive power of the WTGS
(controlling power range management of the WPP).
• Two data sets containing setpoint data for P, Q, cos j
(1) Default values for WTGS operation when the communication is
interrupted resp. the WTGS is part of the WPP, but not subjected to WPP
control
(2) Demand values for WTGS operation when the WTGS is subjected to
WPP control
Energy for the World
AG-Präsentation

ENERCON
Modification of LN WTUR
Measured Values / Processed Values
TotPwrAt
TotPwrRt
Available active power of WTGS* NEW
Available reactive power generating of WTGS* NEW
Available reactive power absorbing of WTGS* NEW
Available power factor generating of WTGS* NEW
Available power factor absorbing of WTGS* NEW
* computed value depending on wind conditions etc.
Energy for the World
AG-Präsentation

Controls
...
WCMS activated NEW
Settings
ENERCON
Modification of LN WTUR
DmdPwrAt Demand value of active power generation of WTGS – Default value
DmdPwrRt Demand value of reactive power generation of WTGS – Default value
DmdPF Demand value of power factor of WTGS – Default value
MaxGdPwrAt Maximum allowable active power gradient after start of WTGS – Default value
Minimum allowable active power gradient after change of maximum value of active power generation of
WTGS – Default value NEW
Demand value of active power generation of WTGS – WCMS value NEW
Demand value of reactive power generation of WTGS – WCMS value NEW
Demand value of power factor of WTGS – WCMS value NEW
Maximum allowable active power gradient after start of WTGS – WCMS value NEW
Minimum allowable active power gradient after change of maximum value of active power generation of
WTGS – WCMS value NEW
Energy for the World
AG-Präsentation