Power Systems Control Prof. Wonhee Kim · 2019-06-05 · FSIG wind turbines have difficulties meeting the requirements of the Grid Codes. DFIG became increasingly common in large

Power Systems Control

Prof. Wonhee Kim

Ch.8. Wind Power System Control

Wind Power System

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Wind Power System - Onshore

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Wind Power System - Offshore

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Turbine

Turbine

Wind Energy Generating System

Turbine

Turbine

Wind Turbine Architectures

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History of Wind Power

• BC 5000, 풍력에너지는나일강을따라배를항해하는데사용

• BC 200, 갈대직물날개를한수직축풍차로곡식제분(페르시아, 중동)

단순풍차로물을급수(중국)

• 11 C, 풍차를개량하여호수와라인강삼각주의배수시적용(독일)

• 19 C 후반, 농장과목초지에물을급수하는데사용(미국개척자)

• 1891년풍력발전기의효시 : 덴마크의 Poul La Cour이개발한풍력발전기

=> 가정용과산업용전기를생산하는데이용

• Grandpa’s Knob : 1940년대제일큰풍력터빈

- 미국 Vermont 주언덕의정상에서작동되기시작

- 1.25 MW 출력 @ 48 km/h

- 2차 세계대전 중 수개월 동안에 지역 전기공급망에

전기를 공급

Type of Wind Turbine

Wind

turbineHorizontal-axis

wind turbine

Vertical-ax

is

win

d tu

rbin

e

American

type

Dutch

type

Propeller

type

Sailwing

type

Savonius

typeHorizontal

flow type

Gyro mill

type

Darrieus

type

Horizontal-axis Type Wind Turbine

Propeller type wind turbine


Dutch type wind turbine


American type wind turbine


Sailwing type wind turbine

Vertical-axis Type Wind Turbine

Screen

Wind Wind Wind

Paddle


Savonius type wind turbine


Horizontal flow type wind turbine


Darrieus type wind turbine


Gyro mill type wind turbine

Horizontal-axis Type Vs Vertical-axis Type

Horizontal Type

Horizontal-axis Type Vs Vertical-axis Type

Vertical Type

Stand-alone/Grid Connected Type

Fixed-speed Wind Turbines

Gear

Max. Power Control

Max. Power Control

Max. Power

Control

Pitch or Stall Control

Variable-speed Wind Turbines

Variable-speed Wind Turbines

Present Situation of Domestic Wind Plant

Amount of electricity used in 2011 = 455 TWh

Capacity of electricity generation facility in 2011 = 81,806MW

Generated electric power amount in 2011 = 503 TWh




Wind plant in Yeongdeok













Present Situation of Worldwide Wind Plant








Wind Generators Compared with Conventional

Power Plant

Wind Generators Compared with Conventional

Power Plant

Grid Code Regulations for the Integration of Wind Generation

Wind Turbine Generator Systems

Evolution of Wind Turbine Generator Systems

FSIG wind turbines were applied to wind turbines as large as 1.5 MW.

There are increasing difficulties in controlling drive train oscillations and limiting mechanical load.

FSIG wind turbines have difficulties meeting the requirements of the Grid Codes.

DFIG became increasingly common in large wind turbines where the benefits of limited variable-speed operation

were required but at the reduced cost of controlling only a fraction of the output power.

Slip rings are required on the generator roto and the air-gap of a wound rotor induction generator must be kept small.

FPC overcomes these problems, but it is expensive

Soft-starter for FSIG Wind Turbines

53

Soft-starter for FSIG Wind Turbines

54

Max. Power Control

Max. Power

Control

Pitch or Stall Control

Generator-side Converter Control and Dynamic Performance

Generator-side Converter Control and Dynamic Performance

Vector Control Strategy

Documents

Power Systems Control Prof. Wonhee Kim · 2019-06-05 · FSIG wind turbines have difficulties meeting the requirements of the Grid Codes. DFIG became increasingly common in large