Project
| # | Title | Team Members | TA | Documents | Sponsor |
|---|---|---|---|---|---|
| 30 | Power Outlet Quality and Submeter System |
Nicole Viz Roshan Mahesh Soham Manjrekar |
Surya Vasanth | design_document1.pdf design_document2.pdf final_paper1.pdf presentation1.pdf proposal1.pdf proposal2.pdf video1.mov video2.mov |
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| # Power Outlet Quality and Submeter System Project Team Members: - Nicole Viz (nviz2) - Soham Manjrekar (sohammm2) - Roshan Mahesh (roshanm2) # Problem In the rapidly evolving field of power electronics and energy technologies, maintaining consistent and high-quality power distribution and energy usage is critical for residential and commercial buildings. Using submeters can help create energy savings, lower operating costs, increase building efficiency and reliability, and improve occupant comfort. Devices today have several drawbacks, however. They can be cost-inefficient, complex to operate and to read, and they may lack real-time insights. Additionally, they may not employ sufficient power quality monitoring. These shortcomings can lead to difficulty in meeting recent sustainability efforts, and as such, an innovative solution is needed. # Solution For our project, we’d like to design and construct an improved device that monitors power quality and acts as a submeter to its loads – a device that is cost-effective, has high-fidelity data acquisition, and operates with an intuitive user interface LCD screen. Our project will solve the problems listed above by combining a power quality monitor along with a submeter in a cost-effective manner that stores real-time data and loads the data to a database that can be accessed through a website. More detailed specifications are presented below. We’ve divided our project into the following subsystems: Microcontroller/Software, Sensors and ICs, and Power. Note: We’ve looked into the work of a group who did a similar project last year and discussed some of the issues they faced; portions of this work will hopefully build on that and improve upon them. # Solution Components - Microcontroller/Software 1. ESP-32 or similar - Offers DSP - WiFi and Bluetooth Connectivity - Allows for expansion GPIO to add additional storage - Low power draw 2. SD Card Module - To save data in the event of power loss 3. Google Cloud hosting MySQL database or similar - Any online cheap database management system - Sensors and ICs 1. Voltage Sensing via Voltage Divider 2. Current Transformer (PA1005.070QNL by Pulse Electronics), measures current as well 3. ADE9153A - Single Phase Energy Metering IC 4. ADE9430 - Power Quality Metering IC - Power 1. 5V Li ion Battery (or can investigate other battery options if there are safety concerns with Li ion) 2. 3.3V Linear Regulator (to power PCB with IC’s and microcontroller) # Criterion for Success Our criterion for success is divided up into the following 5 categories: software, operation, power quality measurement, submeter measurement, and miscellaneous. These are our criteria for success: - Software 1. Online database that holds data such as timestamp, voltage, current, power, time of harmonic disturbances/power outages/voltage changes larger than 5% - Upload data to database every 15 minutes using WiFi/bluetooth 2. Displays waveforms of power outlet current and voltage 3. Displays whether or not there’s a power quality issue (for harmonic disturbances/power outages/voltage changes larger than 5%), the type of issue, followed by a notification - Operation 1. Self powering our device for at least 24 hours - Power Quality Measurement 1. Record harmonic disturbances 20 ms before and after 2. Record voltage changes larger than 5%, or power failures 3. Send this data to database when failures/disturbances occur - Submeter Measurement 1. Measure voltage, current, power of electrical load 2. Have an LCD Screen displaying instantaneous voltage, current, power - Miscellaneous / Stretch Goals 1. Keep construction costs as low as reasonably possible 2. Make device lean and visually tidy |
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