Substation - Explain the following hierarchical levels in a power grid and the t
ID: 2083879 • Letter: S
Question
Substation - Explain the following hierarchical levels in a power grid and the types of communication each would required: control center level, substation level, bay level, and process level. what are the general communication requirements for each level?
Energy Efficiency - what is the difference between maximizing power transfer and maximizing efficiency? why are these not the same? What is the parallel, or similarity, with communication systems in utilizing maximum power transfer and maximizing efficiency?
Explanation / Answer
PART A) Explanation:
Process level: process level forms the base. it is the interface between power grid HV equipment and control system. Assets used at this level include current, voltage, switches and actuators etc.
Both analog and digital communication used.
Bay level: Functions performed are related to control and protection. The bay control unit performs control in accordance with control commands from station level control equipment and monitoring for the bay.
Both analog and digital communication are used here.
Substation level: It is the brain of the system.It is located as the Station Control Unit (SCU). A Data Communication Unit is present between the bay level and station level.
A Data Communication Unit (DCU) serves as a communication interface between station level and bay level unit.
Communication between the bay level and station level is through Power Line Carrier Communication (PLCC).
control center level: Control center levels include the centers responsible for the control and operation of huge electrical networks. It receives data from substation and other control centers depending on the importance.
Communication between control centers is through inter control center communication( ICCC) protocol.
PART B) Energy Efficiency:
Maximizing power transfer depends on the internal circuitry as well like performance enhancing circuit whereas efficiency is the only function of input to output quantity.