4. Abstract
Medium sized energy consumers that use a few MW of power such as a small sized community,
an industrial complex, a housing complex etc. Have very large expenses on electricity and the
availability of electricity is dependent on variables such as weather, seasons of the year, larger
consumption which can cause disconnections in power supply and power outages which
interfere the daily routine and harms the population`s quality of life especially in the hot summer
and cold winter periods. These main objectives, lowering the monthly payments and expenses
and also suppling independent and continuous electricity put consumers in a position in which
the need a unified solution to these objectives. One of the leading solutions available is the
Microgrid, a medium sized system which contains private distributed energy sources (DG), a
variety of energy storage solutions and interconnectivity with the public electrical company.
It is also possible to integrate renewable energy DG`s which could lower air pollution and
Greenhouse gases. This project will present the planning of such a Microgrid in Kibbutz Yakum
which has an industrial complex, high-tech facilities and a housing complex. It will also present
the different components from which a Microgrid is constructed it will present new technologies
which can be integrated into the Microgrid like a high efficiency power storage made by the
Alevo corp. which is an American company, a real-time consumption monitoring system, a
pricing system which will display the real-time cost of energy being consumed and will let the
user decide if he wishes to purchase electricity from the electrical company or to consume the
power from his DG`s and energy storages.The information will be displayed on a central
computer and it will also give the user the ability to remotely execute the necessary actions such
as, remotely shutting down unused pre-defined sections to reduce the power consumptions to
eventually lower costs.In order to display all of the different equipment and technologies we will
perform a comprehensive review and explain in detail the pros and cons, the reasons why we
chose certain equipment when we keep in mind the main three aspects Cost, efficiency, and
safety. This report is the basis to our project which will combine the theoretical material we study
and its application in the field.
The system planning will include the following:
a. System Algorithm planning.
b. Low voltage order – Entrance and exit chambers for secondary boards.
c. Select the cross section area of the power cables.
d. Planning the location of main power distribution board and the protection equipment.
e. Planning the circuit protection equipment by basing on the selectivity principle.
f. Reference to the short circuit currents including resistance to thermal and dynamic loads,
voltage Falls.
g. Planning the secondary board locations and selecting the protection equipment.
h. Planning the grounding system.
i. Designing the SCADA monitoring and control system