The offline accident of the large-scale wind generator system and its protection & control scheme

2012 ◽  
Author(s):  
Xinzhou Dong ◽  
Shenxing Shi ◽  
Bin Wang ◽  
D. Bak ◽  
Runbin Cao ◽  
...  
Keyword(s):  
Large Scale ◽  
Generator System ◽  
Wind Generator ◽  
Control Scheme

scholarly journals Simulation and Characteristics Analysis of Multiple Wind Generators in Large-Scale Wind Farms Based on Simplified Model

Electronics ◽  
2020 ◽  
Vol 9 (12) ◽  
pp. 1994
Author(s):  
Jing Wang ◽  
Guopeng Zhao
Keyword(s):  
Large Scale ◽  
Wind Farms ◽  
Simulation Models ◽  
Generator System ◽  
Transient Model ◽  
Electromagnetic Transient ◽  
Wind Generator ◽  
Wind Generators ◽  
Simulation Speed ◽  
Output Characteristics

In the view of the high complexity and a large amount of data of the electromagnetic transient model for the single wind generator, it is difficult to realize the multi-unit simulation modeling of large-scale wind farms by power system simulation software. In this paper, the simplified models of single direct drive and doubly-fed wind generator system are proposed, respectively. In order to study the output characteristics of the wind generator system, the components with small inertia constant in the electromagnetic transient model are neglected, and the shafting model, the converter model, and the control loops are simplified and reduced, respectively. Based on the study of the single electromagnetic transient model of wind generators, the simplified simulation models are built by the PSCAD (Power Systems Computer Aided Design) simulation platform, which are carried out under the conditions of constant wind speed, step wind speed, and fault. The output characteristics of the simplified models under different working conditions are compared in detail models. The simulation results show that, within the allowable calculation accuracy range, the dynamic response curves of the single simplified model and the electromagnetic transient model are consistent. The simulation speed can be significantly improved, the time consumption can be reduced, and the simulation speed can be increased more obviously when the number of simulation models increases. Therefore, it can be applied to the simulation research of multi-wind generators in large-scale wind farms.

Dynamic output feedback control for nonlinear large-scale interconnected systems

2020 ◽  
Vol 39 (4) ◽  
pp. 801-821
Author(s):  
Ezzeddine Touti ◽  
Ali Sghaier Tlili ◽  
Muhannad Almutiry
Keyword(s):  
Decentralized Control ◽  
Output Feedback ◽  
Large Scale ◽  
Optimization Problem ◽  
Lyapunov Theory ◽  
Interconnected Systems ◽  
Dynamic Output Feedback ◽  
Content Type ◽  
Dynamic Output ◽  
Control Scheme

Purpose This paper aims to focus on the design of a decentralized observation and control method for a class of large-scale systems characterized by nonlinear interconnected functions that are assumed to be uncertain but quadratically bounded. Design/methodology/approach Sufficient conditions, under which the designed control scheme can achieve the asymptotic stabilization of the augmented system, are developed within the Lyapunov theory in the framework of linear matrix inequalities (LMIs). Findings The derived LMIs are formulated under the form of an optimization problem whose resolution allows the concurrent computation of the decentralized control and observation gains and the maximization of the nonlinearity coverage tolerated by the system without becoming unstable. The reliable performances of the designed control scheme, compared to a distinguished decentralized guaranteed cost control strategy issued from the literature, are demonstrated by numerical simulations on an extensive application of a three-generator infinite bus power system. Originality/value The developed optimization problem subject to LMI constraints is efficiently solved by a one-step procedure to analyze the asymptotic stability and to synthesize all the control and observation parameters. Therefore, such a procedure enables to cope with the conservatism and suboptimal solutions procreated by optimization problems based on iterative algorithms with multi-step procedures usually used in the problem of dynamic output feedback decentralized control of nonlinear interconnected systems.

CALCULATION OF THE PARAMETERS OF THE WIND TURBINE ROTOR TEMPERATURE SENSOR

2021 ◽  
Vol 118 (3) ◽  
pp. 141-149
Author(s):  
Alina Fazylova
Keyword(s):  
Wind Turbine ◽  
Temperature Sensor ◽  
Wind Farms ◽  
Turbine Rotor ◽  
Correct Selection ◽  
Temperature Control System ◽  
Working Pressure ◽  
Generator System ◽  
Wind Generator ◽  
The Brain

Today, all the processes associated with technology, mainly operate in autonomous modes, so devices such as a temperature sensor are a must. Since technical progress is taking place in industry and production by leaps and bounds, all equipment most often used in various kinds of processes and work has an automatic principle of operation [1] However, for productive work, albeit automated units, it is necessary to comply with all the exact indicators at which the device's performance will be the highest. These indicators include values, namely the required, more precisely, the working pressure, speed, and temperature. To prevent rapid wear and overload of automated equipment, the temperature level must be measured. Of course, this is not done with a simple thermometer or thermometer. For these purposes, special devices are used, such as temperature sensors. Wind power is one of the most important renewable energy solutions. As a rule, wind farms are located far from civilization, in remote regions - in hilly areas, on the sea coast [2]. These types of terrain are chosen because wind energy becomes profitable only under conditions that allow obtaining the maximum amount of wind throughout the year. However, the harsher environment calls for more sophisticated wind turbines, usually consisting of towers, blades, hubs and nacelles. To ensure control over all parts of the wind turbine, companies install controllers near the tower. A wind generator controller, like a PLC, is the brain of any wind generator, providing control over the system as a whole, the ability to generate reports and monitoring. The generator must be controlled and programmed; without a controller, it couldn't work correctly. For this reason, the controllers must be connected to a single system for remote monitoring, power generation reporting, parameter monitoring and diagnostic maintenance [3].This article provides an algorithm for calculating a temperature sensor for its correct selection for a wind generator system, which will subsequently be used for a temperature control system in a generator system.

scholarly journals Modeling the Non Linear Behavior of a Magnetic Fault Current Limiter

2015 ◽  
Vol 4 (3) ◽  
pp. 1 ◽  
Author(s):  
P. R. Wilson
Keyword(s):  
Large Scale ◽  
Low Cost ◽  
Behavioral Modeling ◽  
Fault Current ◽  
Fault Current Limiter ◽  
Intrinsic Properties ◽  
Automatic Behavior ◽  
Linear Behavior ◽  
Control Scheme ◽  
Fault Current Limiters

Fault Current Limiters are used in a wide array of applications from small circuit protection at low power levels to large scale high power applications which require superconductors and complex control circuitry. One advantage of  passive fault current limiters (FCL) is the automatic behavior that is dependent on the intrinsic properties of the circuit elements rather than on a complex feedback control scheme making this approach attractive for low cost applications and also where reliability is critical. This paper describes the behavioral modeling of a passive Magnetic FCL and its potential application in practical circuits.

A Predictive Control Scheme for Large-Scale Grid-Connected PV System Using High-Level NPC Inverter

2019 ◽  
Vol 45 (3) ◽  
pp. 1685-1701 ◽  
Author(s):  
Abdelbaset Laib ◽  
Fateh Krim ◽  
Billel Talbi ◽  
Abdeslem Sahli
Keyword(s):  
Predictive Control ◽  
Large Scale ◽  
Pv System ◽  
Control Scheme ◽  
Large Scale Grid ◽  
High Level ◽  
Scale Grid
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