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Active Power Ramp Rate Control for a Wind Power Plant

IP.com Disclosure Number: IPCOM000237459D
Publication Date: 2014-Jun-18
Document File: 1 page(s) / 41K

Publishing Venue

The IP.com Prior Art Database

Abstract

The active power (P) ramp rate control functionality performed by a Power Plant Controller (PPC) for controlling a Wind Power Plant (WPP) handles the P ramp rate control under the scenarios including both the wind speed reaches nominal wind speed and is below nominal wind speed. Especially this control is effective when the wind speed is below nominal wind speed and it varies significantly to cause the WPP’s P to dramatically increase or decrease. A WPP comprises a plurality of Wind Turbine Generators (WTGs).

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Title: Active Power Ramp Rate Control for a Wind Power Plant

The active power (P) ramp rate control functionality performed by a Power Plant Controller (PPC) for controlling a Wind Power Plant (WPP) handles the P ramp rate control under the scenarios including both the wind speed reaches nominal wind speed and is below nominal wind speed. Especially this control is effective when the wind speed is below nominal wind speed and it varies significantly to cause the WPP's P to dramatically increase or decrease. A WPP comprises a plurality of Wind Turbine Generators (WTGs).

The WPP P measurements either from Point of Measurement (PoM) or from the Wind Turbine Generators (WTGs) are utilized to monitor the WPP P ramping rate. The algorithm to calculate a WPP P ramping rate can use different methods in different window width times, e.g. as listed below. The window width time for such calculations is one of the parameters defined by users.

1. Fixed window width time, averaging all the sampling points as the P value for each window width time.

2. Fixed window width time, using either the first or the last sampling point as the P value for each window width time.

3. Moving window width time, averaging all the sampling points as the P value for each window width time.

4. Moving window width time, using either the first or the last sampling point as the P value for each window width time.

Based on the P variations calculated by the algorithms described above, a control strategy is designed to activate...