07 2010-A-PS-M-1-072.hwp
IEC 6 1 40 0 -21

An Implementation of Real-time Measurement and Assessment System for Power
Quality Characteristics of Grid Connected Wind Turbines
* ** †
(Jong-Joo LeeDong-Joon KimYoung-Hwan Moon)
Abstract - The renewable resource are getting more attentions with increased concerns on the depletion of fossil fuels
and several environmental issues like emission problem. Wind power is a representative option among several renewable
sources and the generation capacity using wind power is being increased.
However, the wind generation is so volatile on its output characteristic, so it is required to assess the grid impact of
wind power generation by measuring the fluctuation effect more precisely. This paper proposes the method for measuring
the generation output according to IEC 61400-21(Measurement and assessment of power quality characteristics of grid
connected wind turbines) to assess the power quality of wind turbine generation.
In addition, it shows an application case to a small-scale wind power generator. In the case study, it suggests a
structure design of the proposed measurement instrument both on hardware and software aspects, which is composed of
a remote monitoring & data analysis program and an FPGA based real-time signal processing device.
Key Words : Wind turbines, Power quality, IEC 61400-21, Real-time, Embedded system
* :
** :
† , : smart grid
E-mail : yhmoon@keri.re.kr
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IEC(International Electrotechnical Commission)

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IEC 61400-21 Edition 2.0

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(analog-digital converter) [7].
Trans. KIEE. Vol. 59, No. 9, SEP, 2010
IEC 61400-21 1561
1
Fig. 1 Assumed elements of measurement system
1 1 IEC 61400-21
( , , ADC )
.
Class 1,0 IEC 60044-1 CT
±0,5 m/s IEC 61400-12-1
(as a guidance) Anemometer
Table 1 Specification of requirements for measurement
,
2kHz, (harmonics)
(higher frequency components)
20kHz .
(wind speed) 1Hz
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4
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Trans. KIEE. Vol. 59, No. 9, SEP, 2010
IEC 61400-21 1563

(simultaneous sampling) 50kHz
.
Fig. 4 Block diagram of FPGA DAQ
,

DAM FIFO . FIFO

. FPGA DMA FIFO

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Table 5 Specification of wind turbine generator
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IEC 61400-25(Wind Turbines - Part 25:
Communications for monitoring and control of wind
power plants)
[9,10].
, ,

.
Trans. KIEE. Vol. 59, No. 9, SEP, 2010
IEC 61400-21 1565

[1] Sanz, M, Llombart, A, Bayod, A.A, Mur, J, “Power
quality measurements and analysis for wind
turbines”, Instrumentation and Measurement
[2] Gutierrez, J.J, Ruiz, J, Leturiondo, L.A, Lazkano, A,
“Flicker Measurement System for Wind Turbine
Certification”, Instrumentation and Measurement,
2008
20 , 5 , pp. 92-98, 2003 5
[4] , , , , "LabVIEW
",
, 29 , 6 , 2009
[5] , , , , "
",
, 58 , 11 , pp. 2185-2191, 2009
[6] , , "
",
, 26 , 9 , pp. 81-87, 2009. 8
[7] IEC 61400-21, “Wind turbines –Part 21: Measurement
and assessment of power quality characteristics of
grid connected wind turbines”, Edition 2.0,
International Electrotechnical Commission, Aug. 2008
[8] PN 324561C-01, CompactRIO and LabVIEW
Development Fundamentals Course Manual, Sep. 2008
Edition, National Instruments, Sep. 2008
[9] , , , “ IEC
61400-25 ”,
, 58 7 , pp.1356-1362, 2009, 7
[10] , , , , "IEC61400-25

", , 59 , 1 ,
pp. 16-18, 2010

(). 2008
().
. 2001~2004
() . 2005~2007
. 2008
smart grid .
Tel : 031-420-6188
FAX : 031-420-6189
E-mail : jongjoo@keri.re.kr
1971 1 7. 1992
. 1994
(). 2004
. ,
PSS
, .
smart grid .
Tel : 031-420-6184,
FAX : 031-420-6189
E-mail : djkim0419@keri.re.kr,
1956 5 13 . 1979
. 1981
(). 1990 Univ. of
Texas(Arlington) (
PSS , , WAMS,
. smart grid
, .
Tel : 031-420-6004
FAX : 031-420-6189
E-mail : yhmoon@keri.re.kr