DsPIC Based Electrical Station Variable Reader/Conroller with True Graph

This project “Electrical Station Variable Reader/Conroller with True

Graph” designed using the PIC Microcontroller aids in the measurement of

Various Power station Parameters and provides a serial interface to the PC.

The SCADA (Supervisory Control And Data Acquisition

System) is achieved by transferring the parameters to a remote terminal and

getting the feed back from the remote computer and abide by the same.

This Project also supports Automatic Prediction and Self Protection.

For eg if a Transformer gets Over Heated, then automatically the Loads will

get Tripped Off.

The transfer rate of this microcontroller is 9600 Baud rate. This

enables us to view and track the online changes encountered in the

Particular parameter or of all the parameters. One of the main advantage of

this project is it allows us to view all the parameter readings simultaneously

on the screen. The Graph drawn on the screen keeps on tracking the

changes on the parameter. It also supports Background Processing of the

Parameters. The parameters are classified into Analog and Logic

Parameters

Analog Parameters:

1. Incoming Voltage

2. Bus Voltage

3. 3 - Feeder Current

4. Max Bus Current

5. Incoming Current

6. Power

7. Active Power

8. Power Factor

9. Frequency

Logic Parameter:

1. Over Heat Protection

2. Flame Identification

3. Trespassing Identification

Software:

Software Compatibility with ‘C’ and Visual Basic.

BLOCK DIAGRAM

dsPICMicrocontroller

Board

SignalConditioning

BoardAnalogInputs

RS232Interface

SerialPort

CPU

AI BoardFlame, Temp

Relay Drivers

Relays for Control Outputs

Remote Computer

SCADA

Dual Power Supply

Power Supply