GE DR60, Technical Manual

Page: 72 / 124

DR60
72 DR60-TM-EN- 2A
TVE = √
(𝑋
𝑟
(𝑛) − 𝑋
𝑟
)
2
+ (𝑋
𝑖
(𝑛) − 𝑋
𝑖
)2
𝑋
𝑟
2
+ 𝑋
𝑖
2
Represents the magnitude of the error vector, obtained by subtracting the measured
synchrophasor of the theoretical value. It is represented as a fraction of the magnitude
of the theoretical value.
In the equation above,
𝑋
𝑟
(𝑛) and 𝑋
𝑖
(𝑛) are the measured values, while 𝑋
𝑟
and 𝑋
𝑖
are
the theoretical values of the input signal at the instant of measurement.
All 1A and 5A analog inputs/boards have the proper accuracy necessary for the PMU
solution to be rated as level 1 compliant according to IEEE C37.118 under the condition
below.
Influence quantity Range TVE max
Signal frequency ± 5 Hz of Fnom 1 %
Signal magnitude
10 % … 120 %
rated
1 %
Phase angle ± 180° 1 %
Harmonic distortion 10 % ¹ 1 %
Out-of-band interfering signal ³
|𝑓
𝑖
− 𝑓
𝑁
| >
𝐹
𝑠
2
10 % ² 1 %
¹ Any harmonic up to 50
𝑡ℎ
order
² Of input signal magnitude
³
𝑓
𝑖
frequency of interfering signal,
𝑓
𝑁
nominal frequency and
𝐹
𝑠
synchrophasors
broadcast frequency
1.3 Communication Ports, Transmission Rates
The PMU streams have their source port configurable from the port 4712 to 4732.
Always configure different streams at different ports. Only 1 stream can work at once
per port.
The DR60 allows the following transmission rates: 60 frames/second at 60 Hz and 50
frames/second at 50Hz.
1.4 Configuration
To quickly configure the DR60 to transmit PMU, follow the steps below: