<Reference> Guideline for the Harmonics of Distribution Network (Japan)
- page 25 -
Official Report of the Ministry of Economics and Industries in Japan:
"Guideline for Harmonics Deterrence Countermeasures on Demand-Side that receives High-
Voltage or Special High-Voltage" (September 30, 1994)
* The following shows the limit values which measurement instruments can detect.
-1.
5% at 6.6kV system, 3% at special high-voltage system
-2.
Upper limit values of harmonics outflow current (mA) per 1kW Contracted Power
Order
Voltage [kV]
6.6
22
33
66
77
110
154
220
275
500
5th 7th 11th 13th 17th 19th 23rd
Higher
than
23rd
3.5
1.8
1.2
0.59
0.50
0.35
0.25
0.17
0.14
0.07
2.5
1.3
0.86
0.42
0.36
0.25
0.18
0.12
0.10
0.05
1.6
0.82
0.55
0.27
0.23
0.16
0.11
0.08
0.06
0.03
1.3
0.69
0.46
0.23
0.19
0.13
0.09
0.06
0.05
0.02
1.0
0.53
0.35
0.17
0.15
0.10
0.07
0.05
0.04
0.02
0.9
0.47
0.32
0.16
0.13
0.09
0.06
0.04
0.03
0.02
0.76
0.39
0.26
0.13
0.11
0.07
0.05
0.03
0.03
0.01
0.70
0.36
0.24
0.12
0.10
0.07
0.05
0.03
0.02
0.01
<Reference> Concept of inflow and outflow of harmonics
Fundamental
wave
Load
Harmonics
Distribution
Measuring
instrument
Measuring
through VT(PT) or
CT for high and
extra-high voltage
networks
Outflow
Inflow
Inflow
Outflow
Condition
The harmonics flow from
distribution to load
The harmonics flow from
load to distribution
Cause
Distribution side
(The harmonics generated by distribution is
bigger than the harmonics generated by load.)
Load side
(The harmonics generated by load is bigger
than the harmonics generated by distribution.)
Harmonics Voltage (Total Harmonic Voltage Distortion)
Harmonics Current
Load
Distribution
Measuring
instrument
Measuring
through VT(PT)
or CT for high
and extra-high
voltage networks
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