Vestas Wind Systems A/s

Henrik Møller

Kouroush Nayebi

Jorge Martinez Garcia

Martin Ansbjerg Kjær

Mu Wei

Ciprian Biris

Kent Tange

Mads Rajczyk Skjelmose

Janakiraman Sivasankaran

Kasper Zinck

Rubin Panni

Rasmus Lærke

Hans Kristian Bjørn

Dan Wu

Athanasios Rokofyllos

Chun Meng Heng

Rui Wu

Joachim Steinkohl

Nils Pelzer

Ulf Clausen

Arne Baron

Martin Møller SØRENSEN

Mehrdad Babazadeh

Saed Ehsani

Aspects of the present invention relate to a method for controlling active power output of a renewable energy power plant comprising one or more renewable energy generators. Aspects of the invention may be used to control the active power output of a wind energy power plant and to determine accurate estimates of the available active power when the frequency level of the connected power network is outside of the frequency deadband.

Methods and systems for enhanced active power control during frequency deviation

A power plant controller for a renewable energy power plant comprising a plurality of renewable energy generators is configured to: receive a signal indicative of a voltage level of the power network to which the power plant is connected; receive a plurality of signals from the plurality of renewable energy generators, each signal being indicative of a voltage level of a respective renewable energy generator; and determine, for each of the plurality of renewable energy generators, a respective reactive power set point based on: the indicated voltage level of the power network; the indicated voltage level of that renewable energy generator; and a reference voltage level based on the indicated voltage levels of the plurality of renewable energy generators; and dispatch each determined reactive power set point to a respective local controller associated with the respective renewable energy generator for controlling that renewable energy generator.

Methods and systems for improving control of a renewable energy power plant

The invention relates to a method for controlling a power plant for providing frequency support to a power grid. The power plant comprises an electrical storage unit and a power generating system comprising one or more power generating units including at least one wind turbine generator. The method comprises setting a frequency control period, wherein the electrical storage unit is scheduled to charge or discharge according to a first power set-point and at the start of the frequency control period, charging or discharging the electrical storage unit according to the power set-point. In case of a frequency deviation, a power change of the power from the electrical storage unit is determined based on the frequency deviation. Frequency support is provided by controlling the electrical storage unit to charge or discharge according to a second power set-point determined from the power change.

Frequency support from a power plant with an electrical storage unit

The invention relates to a method for controlling a power plant during an event which requires a change of the power produced by the power plant, wherein the power plant comprises a plurality of power generating units including at least one wind turbine generator, the method comprises determining the power reference dependent on an available power, changing the power reference to a modified power reference by a power variation in response to detecting a first event, memorizing a power level relating to the actual power production at a time occurrence of the first event, setting a maximum power limit to the memorized power level, limiting the modified power reference to the maximum power limit, and controlling the power produced by the wind turbines in accordance with the limited modified power reference.

Controlling a power plant comprising wind turbines during grid frequency deviation

The invention relates to a method for providing power ramp rate control of a hybrid power plant with a plurality of energy assets including wind turbine generators and possibly solar power units, and an energy storage unit. Each energy asset has a ramp rate capability defined as the highest possible ramp rate at a given time, and the method includes receiving from each energy asset the corresponding ramp rate capability, and taking into account the ramp rate capabilities from the energy assets when calculating the power setpoint to each energy asset, so as to improve the power ramp rate control of the hybrid power plant.

Method for improved power ramping in a hybrid power plant

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Egå, Denmark

Henrik Møller