Authors :
Elukpo, Agnes Obila; Iloh, John Paul Izuchukwu
Volume/Issue :
Volume 7 - 2022, Issue 3 - March
Google Scholar :
http://bitly.ws/gu88
Scribd :
https://bit.ly/3DaEVeB
DOI :
https://doi.org/10.5281/zenodo.6385753
Abstract :
The essence of Energy Management (EM) is
mainly to optimize the cost of providing energy to end
users without compromising the quality of supply, safety
of end users and overall system reliability. In most
private and public establishments, a huge chunk of total
operating cost is dependent on energy cost. There is need
therefore, for an efficient energy management system to
ensure that an organization’s energy bill is maintained
optimal level at all times. This paper presents a Smart
Energy Management System for Microgrid Applications
(SEMSMA) using three offices in the Department of
Electrical/Electronic Engineering, Chukwuemeka
Odumegwu Ojukwu University as a case study. The
system is designed to distribute power from a 2000W
inverter among the offices and also perform real-time
simultaneous monitoring of the energy consumption in
each of the offices. Each of the three channels/offices is
equipped with power measurement function for
monitoring the energy consumption for each office. The
system is designed to restrict each channel/office to a
predefined maximum power allocation (threshold) based
on the end user’s request. Loads in the offices are
connected to the main power distribution box (DB)
through the SEMSMA circuitry. A power calculation
algorithm is designed to use the current and voltage
samples for continuously determining the amount of
power consumed by each office. The calculated power is
continuously compared with the predefined threshold and
once the threshold is exceeded, the system automatically
switches off the affected load/office. A liquid crystal
display (LCD) is provided for displaying the status (ON
or OFF), instantaneous power in watts (W) and total
energy consumption in kilowatt hour (kWh). A ZigBee
transceiver module is used for bidirectional
communication between the SEMSMA circuitry and a
remote computer via a Graphical User Interface (GUI)
which provides an ultra low power (ULP) solution for
remote operation and monitoring of the system. The
system embedded software was developed in Proteus 8.10
simulation environment and implemented with the
associated hardware circuitry to produce the physical
prototype. The load profiles for the three offices were
used to conduct an experiment for evaluating the
performance of the system. The results showed that the
system functioned with accuracy level of approximately
99.96%. Thus, the system is proven to have the capability
to monitor and capture accurate energy consumption
data for the offices both numerically and graphically via
the LCD and remote GUI respectively.
Keywords :
Smart Energy Management, microgrids, Adiuno Uno, current sensor, NRF24L01 and ZigBee
The essence of Energy Management (EM) is
mainly to optimize the cost of providing energy to end
users without compromising the quality of supply, safety
of end users and overall system reliability. In most
private and public establishments, a huge chunk of total
operating cost is dependent on energy cost. There is need
therefore, for an efficient energy management system to
ensure that an organization’s energy bill is maintained
optimal level at all times. This paper presents a Smart
Energy Management System for Microgrid Applications
(SEMSMA) using three offices in the Department of
Electrical/Electronic Engineering, Chukwuemeka
Odumegwu Ojukwu University as a case study. The
system is designed to distribute power from a 2000W
inverter among the offices and also perform real-time
simultaneous monitoring of the energy consumption in
each of the offices. Each of the three channels/offices is
equipped with power measurement function for
monitoring the energy consumption for each office. The
system is designed to restrict each channel/office to a
predefined maximum power allocation (threshold) based
on the end user’s request. Loads in the offices are
connected to the main power distribution box (DB)
through the SEMSMA circuitry. A power calculation
algorithm is designed to use the current and voltage
samples for continuously determining the amount of
power consumed by each office. The calculated power is
continuously compared with the predefined threshold and
once the threshold is exceeded, the system automatically
switches off the affected load/office. A liquid crystal
display (LCD) is provided for displaying the status (ON
or OFF), instantaneous power in watts (W) and total
energy consumption in kilowatt hour (kWh). A ZigBee
transceiver module is used for bidirectional
communication between the SEMSMA circuitry and a
remote computer via a Graphical User Interface (GUI)
which provides an ultra low power (ULP) solution for
remote operation and monitoring of the system. The
system embedded software was developed in Proteus 8.10
simulation environment and implemented with the
associated hardware circuitry to produce the physical
prototype. The load profiles for the three offices were
used to conduct an experiment for evaluating the
performance of the system. The results showed that the
system functioned with accuracy level of approximately
99.96%. Thus, the system is proven to have the capability
to monitor and capture accurate energy consumption
data for the offices both numerically and graphically via
the LCD and remote GUI respectively.
Keywords :
Smart Energy Management, microgrids, Adiuno Uno, current sensor, NRF24L01 and ZigBee
