公开(公告)号：US11444459B2

公开(公告)日：2022-09-13

申请号：US16618689

申请日：2018-05-15

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Manoj Gupta ,  Ravi Kumar ,  Janakiraman Sivasankaran ,  Mario Dante Jardiel ,  Anoop Vijay Tiwari ,  Kouroush Nayebi

IPC: H02J3/18 ,  H02J3/00 ,  G05B15/02 ,  H02J13/00

Abstract: There is provided a method of operating a renewable power plant that is connected to a wider power network by a bus. The method comprises: identifying a predetermined voltage condition of the renewable power plant or of the bus; controlling the renewable power plant to maintain zero reactive power exchange at the bus for a first period; calculating an average voltage level of the bus that was achieved during the first period; and controlling the renewable power plant to maintain the voltage output at a set voltage level for a second period, the set voltage level being substantially equal to the calculated average voltage level. The method ensures that voltage oscillations due to a push-pull phenomenon between a power plant controller and the power network do not upset the stability of the grid.

公开(公告)号：US10778010B2

公开(公告)日：2020-09-15

申请号：US16341490

申请日：2017-09-27

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Nolan Dadang Caliao ,  Manoj Gupta ,  Mario Dante Jardiel ,  Janakiraman Sivasankaran

IPC: H02J3/18 ,  F03D9/25 ,  F03D7/04 ,  H02J3/38

Abstract: A method for controlling a renewable energy power plant comprising a plurality of wind turbine generators, the method comprising: measuring a voltage level associated with a point of interconnection between a power transmission network and the power plant; calculating a reactive power exchange limit based upon the measured voltage level; and controlling the power plant so that the calculated reactive power exchange limit is not exceeded.