US 2022/0045516 A1Published application

Power flow control device and wind farm including a power flow control device

AssigneeWobben Properties GmbH

InventorsRoberto ROSSO, Sönke ENGELKEN, Marco LISERRE

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Abstract

A wind farm for supplying electrical power into a supply grid. The farm includes wind power installations, a farm grid connecting the installations, and a power flow control device. The power flow control device is configured to connect the farm grid and the supply grid such that an electrical power generated by the installations can be supplied into the supply grid. The power flow control device has at least: a DC link configured to conduct at least the electrical power generated by the installations, an electrical energy store connected to the DC link, an inverter connected to the DC link and configured to inject at least the electrical power generated by the installations into the supply grid, and a controller configured to drive the inverter in such a way that the farm, at the supply grid, in the steady state appears to be dynamic like an electromechanical synchronous machine.

Claims12

Dependent claims

A wind farm for supplying electrical power into an electrical power supply grid having a power supply grid voltage and a power supply grid frequency and being associated with a rated power supply grid voltage, and a rated power supply grid frequency, the wind farm comprising:

a plurality of wind power installations;
an electrical wind farm grid coupled to the plurality of wind power installations and having a wind farm voltage and a wind farm frequency and being associated with a rated wind farm voltage and a rated wind farm frequency;
and
a power flow control device configured to couple unit the electrical wind farm grid to the electrical power supply grid such that the electrical power generated by the plurality of wind power installations are supplied to electrical power supply grid, wherein the power flow control device includes:
a DC link configured to transmit the electrical power generated by the plurality of wind power installations;
a battery coupled to the DC link;
an inverter, coupled to the DC link, configured to supply at least the electrical power generated by the plurality of wind power installations into the electrical power supply grid;
and
a controller configured to drive at least the inverter such that the wind farm, at the electrical power supply grid, in steady state dynamically emulates an electromechanical synchronous machine.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/276,053Filed 22 Aug 2019
Priority: DE 10 2018 122 587.314 Sep 2018
Published: 10 Feb 2022
Term ends: Not estimatedThe source records don’t support an estimate.

Classification13 codes

H02J 3/381
Arrangements for feeding a single network from two or more generators or sources in parallel; Arrangements for feeding already energised…
H02J 3/50
Controlling the sharing of generated power between the generators, sources or networks: controlling the sharing of reactive power
H02J 3/0014
Arrangements for handling faults or abnormalities, e.g. emergencies or contingencies: for preventing or reducing power oscillations in networks
H02J 3/16
Arrangements for adjusting voltage in AC networks by changing a characteristic of the network load: by adjustment of reactive power

Family

US 11,646,583 B2Related patent
US 2022/0045516 A1This patent

From the US filing history. Foreign family members aren’t listed.

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