Page 99 - Decision Making Applications in Modern Power Systems

66 Decision Making Applications in Modern Power Systems

Microwave
communication

Wireless
communication Cellular
technologies communication

Synchrophasor
communication Satellite
technologies communication

Fiber optic
communication
Wired
communication
technologies
Power line
communication

FIGURE 3.3 Various synchrophasor communication technologies.

from several PMUs are required. In a practical power system network the
electrical buses are scattered over a span of several hundred kilometers and
to communicate their phasor measurements to the PDC in real time is the
responsibility of the SPCS. The SPCS should be reliable, have low latency,
and have sufficient bandwidth to support the PMU data rates. The key syn-
chrophasor communication technologies are categorized into two groups:
wired technologies and wireless technologies [8]. The wired communication
technology offers high reliability, huge bandwidth, and protection against
interference. On the other hand, the wireless technology enjoys superiority in
the matter of rapid deployment, low installation and maintenance costs,
access to remote geographic locations, etc. The various synchrophasor com-
munication technologies are depicted in Fig. 3.3.
The power line communication uses the existing power transmission lines
to transfer the synchrophasor data [9]. This technology is cost-effective as no
additional infrastructure is needed to set up the communication between the
devices. However, the noisy environment of the transmission cables
increases the bit error rate, thereby limiting its application for intersubstation
communication. While the wireless technologies, such as microwave com-
munication and cellular communication, are less reliable due to the signal