Generators and Power Electronics for Wind Turbines

Hansen, Alexander

doi:10.1002/0470012684.ch4

Cited by 48 publications

(47 citation statements)

References 83 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The disadvantage of using shunt Capacitor is that the reactive power supplied is proportional to the square of the voltage. Consequently, the reactive power supplied from the capacitors decreases rapidly when the voltage decreases [3]. To overcomes the above disadvantages; STATCOM is best suited for reactive power compensation and harmonic reduction.…”

Section: ©Ijraset (Ugc Approved Journal): All Rights Are Reservedmentioning

confidence: 99%

See 1 more Smart Citation

Intelligent Controller Based STATCOM for Improving Dynamic Stability of a Hybrid Power System

Musunuru¹

2017

IJRASET

View full text Add to dashboard Cite

Renewable energy sources, which are expected to be a promising alternative energy source, can bring new challenges when connected to the power grid. A large amount of wind turbines are connected to the electrical power system in order to mitigate the negative environmental consequence of conventional electricity generation. While connecting the wind turbine to grid it is important to understand the source of disturbance that affects the power quality. FACTS devices are found to be very effective for stability enhancement followed by a disturbance. Static Synchronous Compensator (STATCOM) which is a shunt device of FACTS family is efficient in regulating voltage either by absorbing or by generating reactive power. STATCOM can provide fast and efficient reactive power support to maintain power system voltage stability. This paper proposes a Hybrid control model for STATCOM that controls the voltage during a disturbance. The proposed controller is implemented to the STATCOM under MATLAB/SIMULINK environment. In the simulation test, the hybrid control shows consistent excellence under a severe disturbance like three phase fault. Keywords: STATCOM, power quality, FACTS, power grid, hybrid controller. I.INTRODUCTION Electric power system is a complex system in its structure and operation is facing many challenges day by day. The major problem in power system is its instability. Power system stability is the capability of the system to maintain an operating equilibrium point after being subjected to a disturbance for given initial operating conditions. Traditionally voltage regulation is performed by the excitation system and thereby help in controlling the system voltage. Suitable devices like Automatic Voltage Regulators (AVR) are used for the regulation of generated voltage. AVR's normally maintain the generator voltage magnitude at a specified level. AVR's are extensively used on the dynamic or steady state stability of the power system as low frequencies oscillations persist for a long period and may affect the capability of power transfer. Electrical power demand is rising at a very higher rate because of rapid industrial development. In order to satisfy the demand, power transmission has to be raised along with the existing facilities. Thus it is essential to concentrate on the power flow control. The power system should be flexible to adapt itself to any momentary changes in system conditions. In an AC power system, there must be a balance between the generated power and variations in load demand while keeping the system frequency and voltage levels as constant. If the generation is not sufficient, the voltage and frequency drop and the load decreases to balance the total generation minus losses in transmission. But there are only a few percent margins for such a self-regulation. Hence the system is collapsed. Generator excitation controller normally improves stability for smaller faults but not suitable for larger faults that occur near to generator terminals. Thus, traditional methods have to be rev...

show abstract

Section: ©Ijraset (Ugc Approved Journal): All Rights Are Reservedmentioning

confidence: 99%

“…There has been an extensive growth and quick development in the exploitation of wind energy in recent years. The individual units can be of large capacity up to 2 MW, feeding into the distribution network, particularly with customers connected in close proximity [3]. Today, more than 28000 wind generating turbines are successfully operating all over the world.…”

mentioning

confidence: 99%

Intelligent Controller Based STATCOM for Improving Dynamic Stability of a Hybrid Power System

Musunuru¹

2017

IJRASET

View full text Add to dashboard Cite

show abstract

“…[6][7][8] In domestic island, so does the same class wind-diesel hybrid power systems. But most of the diesel hybrid power generation system independent of power quality and economic have a challenge problem.…”

Section: Introductionmentioning

confidence: 99%

Autonomous Micro-grid Design for Supplying Electricity in Carbon-Free Island

Hwang¹,

Kim²,

Lee³

et al. 2014

Journal of Electrical Engineering and Technology

View full text Add to dashboard Cite

-In island and backcountry areas, electrical power is usually supplied by diesel generators.It is difficult for small scale diesel generators to have an economy of scale owing to the usage of fossil fuels to produce electricity. Also, there is a problem of carbon dioxide emissions that brings some environmental pollution to the entire region of the area. For solving those, this paper proposes a design method of autonomous micro-grid to minimize the fossil fuels of diesel generator, which is composed of diesel generator, wind turbine, battery energy storage system and photovoltaic generation system. The proposed method was verified through computer simulation and micro-grid operation system.

show abstract

“…The disadvantage of using shunt Capacitor is that the reactive power supplied is proportional to the square of the voltage. Consequently, the reactive power supplied from the capacitors decreases rapidly when the voltage decreases [3] .To overcomes the above disadvantages; STATCOM is best suited for reactive power compensation and harmonic reduction. It is based on a controllable voltage source converter (VSC).…”

Section: Introductionmentioning

confidence: 99%

Analysis of Power Quality Improvement in Grid Connected Wind Driven Induction Generator at Various Load Conditions

.¹

2013

IJRET

View full text Add to dashboard Cite

As a promising renewable alternative, the wind power is one of the significant sources of generation. Reactive power compensation and harmonic reduction in a low voltage distribution networks for integration of wind power to the grid are the main issues addressed in this paper. This paper proposes a control scheme based on instaneous Pq theory for compensating the reactive power requirement of a three phase grid connected wind driven induction generator as well as the harmonics produced by the non linear load connected to the PCC using STATCOM. The proposed control scheme is simulated using MATLAB/SIMULINK. The Simulation results are presented in this paper.

show abstract

Generators and Power Electronics for Wind Turbines

Cited by 48 publications

References 83 publications

Intelligent Controller Based STATCOM for Improving Dynamic Stability of a Hybrid Power System

Intelligent Controller Based STATCOM for Improving Dynamic Stability of a Hybrid Power System

Autonomous Micro-grid Design for Supplying Electricity in Carbon-Free Island

Analysis of Power Quality Improvement in Grid Connected Wind Driven Induction Generator at Various Load Conditions

Contact Info

Product

Resources

About