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PROJECT DESCRIPTION

The project is designed to develop a system that detects synchronization failure of any external supply source to power grid on sensing the abnormalities in the frequency or voltage.

There are several power generating units connected to the grid, such as hydel, thermal, solar, etc., to supply power to the load. For any deviation of the voltage or frequency from the acceptable limits of the grid, it becomes mandatory that the same feeder should automatically get disconnected from the grid, which by effect is termed as islanding.

This prevents  large scale brown out or black out of grid system. It is preferable to have a system that can warn the grid in advance so that alternate arrangements are kept on standby to avoid complete grid failure.  

This system is based on a microcontroller of the 8051 family. The microcontroller monitors under/over voltage being derived from a set of comparators. As regards the frequency ,since the mains supply it cannot be changed, the project uses a variable frequency generator (555-timer) for changing frequency, while a standard variac is used to vary the input voltage to test proper functioning of both these parameters of the project.

A lamp load (indicating a predictable blackout, brownout) is driven by the microcontroller in case of voltage/frequency going out of acceptable range.

Furthermore, this project can be enhanced by using a power-electronic device to isolate the grid from the erring supply source by sensing cycle-by-cycle deviation for more sophisticated means of detection.

 

PROJECT HIGHLIGHTS
Easy to use, Self-explanatory kit.
All-inclusive solution kit.
Extensive audio-visuals available.
Branding-free material.
Pre-programmed Microcontroller.
Voltage/Frequency Change Detection.
Call/mail for Tech Support from 10 am - 7 pm.
Can be Customized for Arduino, Raspberry Pi, PIC
BLOCK DIAGRAM
Grid Synchronization Fail Detection on Sensing Frequency or Voltage Beyond Range
Hardware Requirements
  • 8051 series Microcontroller
  • LCD
  • Op-Amps
  • 555 timer
  • Crystal
  • Resistors
  • Capacitors
  • Diodes
  • Transformer
  • Voltage Regulator
  • Relay
  • Transistors
  • Slide Switch
  • Lamp
Software Requirements
  • Keil compiler
  • Language: Embedded C or Assembly.
Q & A
Q:  Which microcontrollers are used in this project?
A:  Three 40 pin 8051 microcontrollers are used in this project.
Q:  What is power grid synchronization failure?
A:  Power grid synchronization is failure at the power station in maintaining the grid voltage and frequency parameters.
Q:  Can this system be directly connected to any grid?
A:  No, it is only a concept demonstrating how the control system works in power grid
Q:  What is the formula for calculating smoothing capacitor value?
A:  There is some approximated formula .Peak to peak ripple voltage = Load current in amps / (2*line frequency in hertz *capacitance in farads). But as rule of thumb for 1 A current 1000uF is best. Thus it is load dependent.
READ WHAT OTHERS HAVE SAID
Average Rating
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Showing 3 of 3 reviews
priyanshu varshney, Delhi on 18th November, 2015, 11:23 AM

I come to know about Edgefx through Internet
My Requirement of project is available for both projects, so decided to buy project from Edgefx
Purchased Directly through online.
I was satisfied

harish, visakhapatnam on 14th November, 2015, 06:41 PM

I came to know about Edgefx while I was searching for my Academic project in Google. I have used the words like Electrical & Electronics based projects in Google to find Edgefx.
I found the project so decided to buy that project from Edgefx. I like the project report provided along with the kit.
I placed order online
No changes required and keep doing the same work

Abhijit Dutta, Jorhat on 24th July, 2015, 11:21 AM

I had known about EDGEFX through my friend.I have seen the out video on YouTube, I liked it and I purchased.The kit was delivered on time without any delay.I directly placed order through online.I am satisfied with my project.

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