Enabling wind turbine generators to participate in power grid frequency regulation for enhanced stability
type: CreativeWork
description: "This dissertation focuses on wind farm frequency regulation capability to maintain the grid frequency stability. Wind plant power controllers are designed and tested for participation in grid frequency restoration. The small signal stability on sub-optimal operating points is analyzed and a de-loaded operating point is proposed. In the first paper, a new frequency regulation scheme is developed for the wind turbine/generator/converter trio that will provide the capability to participate in restoring frequency in a way similar to the droop response of conventional generators. Output active power adjustment can be realized by both converter and pitch angle control in addition to inertial response of the wind turbine. This helps in maintaining instantaneous power balance as well as in longer term frequency regulation. In the second paper, Inertia controller, pitch angle controller and rotor speed controller are introduced for wind plant output active power adjustment. The control schemes are developed for wind generators to equip them with the capability to participate in restoring gird frequency. With the proposed controllers, the wind plant can operate as a synchronous generator and is able to output larger or smaller amounts of power as required so as to contribute to grid frequency restoration. The controllers are tested on a wind plant operating in a 4-bus test system for verification of the grid frequency performance under various system dynamic conditions. In the third paper, a reduced-3rd order doubly fed induction generator (DFIG) wind turbine dynamic model is described in details. This model along with an active power controller integrated with a power system is investigated for small signal dynamic stability for both sub- and super-synchronous operating conditions. Assuming constant wind speed and blade pitch angle the mechanical power of the machine is modeled as a function of the rotor speed. The system is initialized and linearized around the sub- and su…
abstract: "This dissertation focuses on wind farm frequency regulation capability to maintain the grid frequency stability. Wind plant power controllers are designed and tested for participation in grid frequency restoration. The small signal stability on sub-optimal operating points is analyzed and a de-loaded operating point is proposed. In the first paper, a new frequency regulation scheme is developed for the wind turbine/generator/converter trio that will provide the capability to participate in restoring frequency in a way similar to the droop response of conventional generators. Output active power adjustment can be realized by both converter and pitch angle control in addition to inertial response of the wind turbine. This helps in maintaining instantaneous power balance as well as in longer term frequency regulation. In the second paper, Inertia controller, pitch angle controller and rotor speed controller are introduced for wind plant output active power adjustment. The control schemes are developed for wind generators to equip them with the capability to participate in restoring gird frequency. With the proposed controllers, the wind plant can operate as a synchronous generator and is able to output larger or smaller amounts of power as required so as to contribute to grid frequency restoration. The controllers are tested on a wind plant operating in a 4-bus test system for verification of the grid frequency performance under various system dynamic conditions. In the third paper, a reduced-3rd order doubly fed induction generator (DFIG) wind turbine dynamic model is described in details. This model along with an active power controller integrated with a power system is investigated for small signal dynamic stability for both sub- and super-synchronous operating conditions. Assuming constant wind speed and blade pitch angle the mechanical power of the machine is modeled as a function of the rotor speed. The system is initialized and linearized around the sub- and su…
author: Ma, HongTao
keywords: Electrical and Computer Engineering
date published: 2016-02-10T08:00:00Z
date modified: 2026-07-24T03:19:30Z
provider: Missouri University of Science and Technology
publisher: Networked Digital Library of Theses and Dissertations
type: WebPage
source organization: Missouri University of Science and Technology