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Harmonic information about DFT analysis
(ii)
When the analysis has been completed, the function can display the information about high
order harmonic components on the IED. The user can read it on the LCD screen (Figure 4.3-2).
Harmonics Level
10:48
1/4
Current
>
Voltage (V)
>
Voltage (Vs)
>
Reset All Value
+
Screen scrolled down
Figure 4.3-2 DFT information screen for current and voltage high order harmonics
Note: The menu of DFT analysis can be found at Power Quality of Statistic sub-menu.
Jump to 'Main menu – Monitoring – Statistics' sub-menus. For the menu
operation, see
DFT information transferred via the communication network
(iii)
The harmonic information, which is the same one displayed on the LDC, will be transferred in
the 61850 communication network using monitoring signals listed in section 4.3.10.
Current
10:48
Ord.
Ia /Ib /Ic
1st 0.99 /0.99 /0.99kA
2nd 0.99 /0.99 /0.99kA
Detailed
3rd 0.99 /0.99 /0.99kA
information
4th 0.99 /0.99 /0.99kA
5th 0.99 /0.99 /0.99kA
6st 0.99 /0.99 /0.99kA
7nd 0.99 /0.99 /0.99kA
8rd 0.99 /0.99 /0.99kA
9th 0.99 /0.99 /0.99kA
10th0.99 /0.99 /0.99kA
11th0.99 /0.99 /0.99kA
12th0.99 /0.99 /0.99kA
13th0.99 /0.99 /0.99kA
14th0.99 /0.99 /0.99kA
15th0.99 /0.99 /0.99kA
THD
TDD
Chapter User interface
- 555 -
Voltage (V)
1/17
10:48
Ord.
1st 999 /999 /999 kV
2nd 999 /999 /999 kV
3rd 999 /999 /999 kV
4th 999 /999 /999 kV
5th 999 /999 /999 kV
6st 999 /999 /999 kV
7nd 999 /999 /999 kV
8rd 999 /999 /999 kV
9th 999 /999 /999 kV
10th 999 /999 /999 kV
11th 999 /999 /999 kV
12th 999 /999 /999 kV
13th 999 /999 /999 kV
14th 999 /999 /999 kV
15th 999 /999 /999 kV
1 /
2 /
3%
THD
1 /
2 /
3%
.
6F2T0207 (0.01)
1/16
Va /Vb /Vc
1 /
2 /
3%
GRE200 (5,6)
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