Synchronization of Wind Trubine Generators Against an Infinite Bus Under Gusting Wind Conditions

Hwang, H. H.; Gilbert, L. J.

doi:10.1109/tpas.1978.354515

Cited by 23 publications

(5 citation statements)

References 1 publication

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“…where 𝜌 w is the air density (in kg∕m 3 ), r w is the radius of the blades (in m) and C pw is the power coefficient which is a function of tip speed ratio (𝛾 w ) and blade pitch angle (𝛽 w in degree). C pw and 𝛾 w are stated by ( 33) and (34), respectively…”

Section: Modelling Of Wpgmentioning

confidence: 99%

“…Studies on the stability issues of WPG is going on from long times due to its wide availability, no greenhouse gas releases throughout operation and usages slight land [2]. Also, offshore or onshore WPG is cheaper than conventional power generator (CPG) and it may easily feed electrical power to the mainland system or isolated off‐grid locations [3]. On the other hand, oceans cover around two‐thirds of the earth's surface and, hence, TPG being environmentally friendly, is also seen as one of the possible assets to produce electrical power past few years.…”

Section: Introductionmentioning

confidence: 99%

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Primary frequency regulation support through deloaded offshore renewable power generators with HVDC‐link

Kumar

2021

IET Renewable Power Gen

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Grid operation becomes a challenging task due to the high penetration of uncontrolled offshore renewable power generators into the mainland system through HVDC‐link system. As a result, system frequency may quickly go outside the acceptable range under severe frequency events. This paper proposes a coordinated control strategy for linearized models of deloaded offshore renewable power generators with HVDC‐link to make contributions in the mainland system during depressed frequency conditions to address the frequency regulation issue. Linearized models are used to obtain the power output from deloaded ORPG by adjusting droop value in proportional to frequency deviation and minimizing the frequency deviation of the mainland system. Inertia control scheme based on utilizing the different capacitors of HVDC‐link is proposed to further improve frequency regulation. Adding inertia from HVDC‐link helps to minimize the rate of change of frequency deviation. Finally, to improve both frequency deviation and rate of change of frequency deviation, case studies of offshore renewable power generators linking with HVDC in view of abrupt load deviations have been effectively shown on system model to validate the proficiency of control schemes in MATLAB/SIMULINKR.

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Section: Modelling Of Wpgmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Primary frequency regulation support through deloaded offshore renewable power generators with HVDC‐link

Kumar

2021

IET Renewable Power Gen

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“…(2) P m − P = sMω On solving the above equation, we get which gives Substituting the value of V R in above equation, we get The 1.0 MVA unit is modeled to regulate the speed during its normal operation, and this can be done by changing the pitch angle as a function of speed. The pitch blade control model is defined by a second-order differential equation (Hwang and Gilber 1978).…”

Section: Wind Power System Under Investigationmentioning

confidence: 99%

Optimal and suboptimal controller design for wind power system

Ehtesham¹,

Khatoon²,

Naseeruddin³

2016

Renewables

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Wind power is a cost-effective renewable source and can be smoothly integrated into power grid by incorporating adequate control strategies. The wind turbine prime mover, wind, is uncontrollable which makes it different from conventional generation. Therefore, it becomes very important to carry out investigations on the dynamic behavior of wind power-generating systems. In this paper, the state space model of the system is developed, optimal controllers using full-state feedback control strategy and suboptimal controllers using strip eigenvalue assignment method are designed to study the dynamic behavior of the system. Also, the optimal controllers are designed for various operating conditions using pole placement technique. Following the controller designs, the closed-loop system eigenvalues and dynamic response plots are obtained for various system states considering various operating conditions. The investigations of these reveal that the implementation of optimal controllers offers not only good dynamic performance, but also ensures system dynamic stability.

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“…[18][19][20][21]. Similar study of synchronizing a WT generator under gusting wind conditions had been conducted in [36].…”

Section: B Case 2: the Fluctuating Wind Power Output Casementioning

confidence: 99%

Active Synchronizing Control of a Microgrid

Cho

Jeon

Kim

et al. 2011

IEEE Trans. Power Electron.

216

104

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A microgrid is an aggregation of multiple distributed generators (DGs), such as renewable energy sources, conventional generators, and energy storage systems that provide both electric power and thermal energy. Typically, a microgrid operates in parallel with the main grid. However, there are cases in which a microgrid operates in an islanded mode, or in a disconnected state. Islanded microgrid can change its operational mode to gridconnected operation by reconnection to the grid, which is referred to as synchronization. Generally, a single machine simply synchronizes with the grid using a synchronizer. However, the synchronization of microgrids that operate with multiple DGs and loads cannot be controlled by a traditional synchronizer. It is needed to control multiple generators and energy storage systems in a coordinated way for the microgrid synchronization. This is not a simple problem, considering that a microgrid consists of various power electronics-based DGs as well as alternator-based generators that produce power together. This paper proposes an active synchronizing control scheme that adopts the network-based coordinated control of multiple DGs. From the simulation results using Simulink dynamic models, it is shown that the scheme provides the microgrid with a deterministic and reliable reconnection to the grid. The proposed method is verified by using the test cases with the experimental setup of a practical microgrid pilot plant.Index Terms-Energy storage system, microgrid, microgrid central controller (MCC), network-based control, static transfer switch (STS), synchronization.

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Synchronization of Wind Trubine Generators Against an Infinite Bus Under Gusting Wind Conditions

Cited by 23 publications

References 1 publication

Primary frequency regulation support through deloaded offshore renewable power generators with HVDC‐link

Primary frequency regulation support through deloaded offshore renewable power generators with HVDC‐link

Optimal and suboptimal controller design for wind power system

Active Synchronizing Control of a Microgrid

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