220.127.116.11 Packet Tracer – Explore the Smart Grid (Instructor Version)
- Explore a Smart Grid
- Analyze the Usage of Cloud Computing in the Smart Grid
Background / Scenario
In this activity, you will explore the smart city, smart grid. The smart grid monitors the power being delivered from different sources and switches to the most efficient power source available.
The smart grid takes advantage of a smart switch to decide which power source to use.
- Packet Tracer 7.1 or newer.
Part 1: Explore the Smart Grid
Step 1: Understanding the devices that comprise the smart grid
Different types of devices are necessary for smart grid operation. Network devices are required to allow communication within the smart grid. Solar cells, wind turbines, and a coal plant are responsible for generating energy. Meters and sensors are used to capture data and facilitate energy source monitoring.
a. Review the Smart Grid. How many routers do you see in the smart grid? What are their names?
Note: Packet Tracer labels connections between network devices but it can be turned off for the sake of readability. To turn labelling on, go to Options > Preferences > Interfaces tab > and checkmark Always Show Port Labels in Logical Workspace.
b. What is the function of routers?
c. A wireless access point is being used in the smart grid. What is its name? What is its function?
d. Is there a way to tell which power source is actively producing energy?
e. What device is responsible for switching between the different power sources?
f. How does the Smart Power Grid Switch decide which power source to use?
g. What is the IP address of the Power IoT Server?
h. The Laptop is used by technicians to monitor the amount of power? Use the Web Browser to remotely connect to the Power IoT Server. You will need to know the username and password in order to login to the Server. You can discover the username and password by examining other devices in the Smart Grid.
What is the username and password and with which device did you discover it?
Step 2: Exploring the Smart Power Grid Switch Program
a. Click the Smart Power Grid Switch.
b. Navigate to the Programming tab. If the Programming tab is not visible, click the Advanced button at the bottom of the window to display the advanced tabs.
The power grid’s location observes sunlight from 6h to 18h (6am to 6pm). Due to proximity to the ocean, the wind usually blows from 3h to 22h (3am to 10pm). The program ensures that solar power is the most preferable power source. If no solar power is available (no sunlight), the program switches over to wind power, if available. If no wind is blowing, the program falls back to coal-based power.
d. What is the section of the program that makes this preference (solar > wind > coal) clear?
Part 2: Reflection
The key aspect of the IoT is the intelligence added to things. Programs allow devices to be more aware and make decisions based on events of triggers. Many programming languages are available and can be used for this matter.
Before programs can be executed by things, the proper hardware platform must be established, essentially turning the thing into a computer. Usually this is done by adding a CPU, memory and some kind of I/O capability.
Lastly, the newly created smart thing must have network communication capabilities to become part of the IoT.
Part 3: Challenge Task (Optional)
a. Use Packet Tracer 7.1 to turn a window into an IoT device. The window must be monitor the rain level in the area and, upon rain detection, shut itself. Below are a few tips:
- Use a regular PT 7.1 window.
- Assign states open/shut a digital port in the Window. Make open = 1 and shut = 0.
- Using the window’s programming tab, edit the code to detect and act upon rain (you may need to click the Advanced button to display the Programming tab).
- The window should remember its last state (shut or open). When the rain is gone, the window should return to its recorded state.
- Have fun.