What is a Substation - Electronic tamil 360

What is a Substation?
        A substation is a vital component of the electrical power system. It's a facility that transforms the voltage of electricity, switches it between circuits, and controls the flow of power. Think of it as a crucial junction in the electrical highway, regulating the traffic of electricity.

    A substation is a facility within the electrical power grid that serves several key purposes:

1. Voltage Transformation
2. Switching and Control
3. Protection

Voltage Transformation: Substations use transformers to change the voltage level of electricity. This is crucial because electricity is most efficiently transmitted at high voltages (like 115 kV or higher). Still, it must be reduced to lower voltages (like 120/240 V) for safe use in homes and businesses.

Switching and Control: Substations contain switches and circuit breakers that allow for the control and distribution of electricity flow. This helps manage the power supply to different areas and ensures reliable service.

Protection: Substations have protective devices like lightning arresters and surge suppressors to safeguard the equipment and prevent damage from electrical surges.

Key Components of a Substation:

• Transformers: These are the workhorses of a substation, responsible for stepping up or stepping down the voltage.
• Circuit Breakers: These devices interrupt the flow of electricity in case of faults or overload conditions.
• Switches: These allow for the connection or disconnection of different parts of the electrical system.
• Busbars: These are the conductors that carry the high-voltage electricity within the substation.
• Control Panels: These panels monitor and control the operation of the substation equipment.

Types of Substations:

1. Step-Up Substations: These increase the voltage of electricity generated at power plants for efficient transmission over long distances.
2. Step-Down Substations: These decrease the voltage of electricity for distribution to local areas and consumers.
3. Switching Substations: These primarily control the flow of electricity without changing the voltage level.

LoRa range test -Agni Sat

 LoRa range test -Agni Sat

RECEIVER  CIRCUIT :

LORA RECEIVER CODE : 


#include "LoRa.h"
#include "SPI.h"

//esp32 ss-5 rst-14 di0-2
//nodemcu ss-15 rst-16 di0-2

#define ss 15
#define rst 16
#define dio0 2

void setup()
{
Serial.begin(115200);
while (!Serial);
Serial.println("LoRa Receiver");

LoRa.setPins(ss, rst, dio0); //setup LoRa transceiver module

while (!LoRa.begin(433E6)) //433E6 - Asia, 866E6 - Europe, 915E6 - North America
{
Serial.println(".");
delay(500);
}
LoRa.setSyncWord(0xA5);
Serial.println("LoRa Initializing OK!");
}

void loop()
{
int packetSize = LoRa.parsePacket(); // try to parse packet
if (packetSize)

{

Serial.print("Received packet '");

while (LoRa.available()) // read packet
{
String LoRaData = LoRa.readString();
Serial.print(LoRaData);
}
Serial.print("' with RSSI "); // print RSSI of packet
Serial.println(LoRa.packetRssi());
}
}



TRANSMITTER CIRCUIT :

LORA TRANSMITTER CODE :


#include "LoRa.h"
#include "SPI.h"

//esp32 ss-5 rst-14 di0-2
//nodemcu ss-15 rst-16 di0-2
#define ss 5
#define rst 14
#define dio0 2

int counter = 0;

void setup()
{
Serial.begin(115200);
while (!Serial);
Serial.println("LoRa Sender");

LoRa.setPins(ss, rst, dio0); //setup LoRa transceiver module

while (!LoRa.begin(433E6)) //433E6 - Asia, 866E6 - Europe, 915E6 - North America
{
Serial.println(".");
delay(500);
}
LoRa.setSyncWord(0xA5);
Serial.println("LoRa Initializing OK!");
}

void loop()
{
Serial.print("Sending packet: ");
Serial.println(counter);

LoRa.beginPacket(); //Send LoRa packet to receiver
LoRa.print("hello from Agni sat");
LoRa.print(counter);
LoRa.endPacket();

counter++;

delay(1000);
}



Agni satellite

 Agni satellite

it is a mini cube satellite it is in the size of 4x4x4 CM.

circuit diagram

 

Block diagram

code


//header file
#include "TroykaDHT.h"
#include "SPI.h"
#include "SD.h"
#include "SFE_BMP180.h"
#include "Wire.h"
//variable
DHT dht(5, DHT11);
const int chipSelect = 4;
File myFile;
SFE_BMP180 pressure;

#define ALTITUDE 138

void setup() {
// put your setup code here, to run once:
Serial.begin(9600);
dht.begin();

while (!Serial) {
; // wait for serial port to connect. Needed for native USB port only
}
Serial.print("Initializing SD card...");
if (!SD.begin(4)) {
Serial.println("initialization failed!");
while (1);
}
Serial.println("initialization done.");


// open the file. note that only one file can be open at a time,
// so you have to close this one before opening another.

if (pressure.begin())

Serial.println("BMP180 init success");
else

{

Serial.println("BMP180 init fail\n\n");

Serial.println("Check connection");

while (1);

}

}

void loop() {

// put your main code here, to run repeatedly:
dht.read();
char status;

double T, P, p0, a;
myFile = SD.open("data.txt", FILE_WRITE);


// if the file opened okay, write to it:

if (myFile) {

Serial.print("Writing to test.txt...");

Serial.print("Temperature = ");

myFile.println(dht.getTemperatureC());

Serial.println(" C \t");

Serial.print("Temperature = ");

myFile.println(dht.getTemperatureK());

Serial.println(" K \t");
Serial.print("Humidity = ");

myFile.println(dht.getHumidity());

Serial.println(" %");

myFile.print("absolute pressure: ");

myFile.print(P, 2);

myFile.print(" hpa = ");

myFile.print(P * 100, 2);

myFile.print(" pa = ");

myFile.print(P * 0.000986923, 2);

myFile.print(" atm = ");

myFile.print(P * 0.750063755, 2);

myFile.print(" mmHg = ");

myFile.print(P * 0.750061683, 2);

myFile.print(" torr = ");

myFile.print(P * 0.014503774, 2);

myFile.println(" psi");

p0 = pressure.sealevel(P, ALTITUDE); // we're at 943.7 meters

myFile.print("relative (sea-level) pressure: ");
myFile.print(p0, 2);

myFile.println(" hpa ");;

a = pressure.altitude(P, p0);

myFile.print("your altitude: ");

myFile.print(a, 0);

myFile.println(" meters ");

delay(2000);

// close the file:

myFile.close();

Serial.println("done.");

} else {

// if the file didn't open, print an error:
Serial.println("error opening test.txt");
}
}




pulse oximeter(Max30100)

 pulse oximeter with arduino (Max30100) 

libraries file 

Max30100

the library file for max 30100 link was here click the download button to download the library file

oled

the library file for oled display link was here click the download button to download the library file

pin connection

• GND  to GND of arduino 
• VIN to 3.3v of arduino
• SCL to A5 of arduino 
• SDA to A4 of arduino

Circuit diagram

#include "Wire.h"
#include "MAX30100_PulseOximeter.h"

#define REPORTING_PERIOD_MS 1000
PulseOximeter pox;
uint32_t tsLastReport = 0;

void onBeatDetected()
{
Serial.println("Beat!");
}
void setup()
{
Serial.begin(115200);
Serial.print("Initializing pulse oximeter..");

if (!pox.begin()) {
Serial.println("FAILED");
for(;;);
}
else {
Serial.println("SUCCESS");
}
pox.setIRLedCurrent(MAX30100_LED_CURR_7_6MA);
pox.setOnBeatDetectedCallback(onBeatDetected);
}

void loop()
{
pox.update();
if (millis() - tsLastReport > REPORTING_PERIOD_MS) {
Serial.print("Heart rate:");
Serial.print(pox.getHeartRate());
Serial.print("bpm / SpO2:");
Serial.print(pox.getSpO2());
Serial.println("%");
tsLastReport = millis();
}
}

pin connection

Max30100

• GND TO GND of arduino
• VIN to 3.3V of arduino
• SCL to A5 of arduino
• SDA to A4 of arduino

OLED:

• GND to GND of arduino
• VCC to 5V of arduino
• SDA to SDA of arduino
• SCL to SCL of arduino

Circuit diagram with display

Coding

#include "Wire.h"
#include "MAX30100_PulseOximeter.h"
#include "Adafruit_GFX.h"
#include "OakOLED.h"
#define Sec 1000
OakOLED oled;

PulseOximeter pox;

uint32_t tsLastReport = 0;

const unsigned char bitmap [] PROGMEM= {
0x00, 0x00, 0x00, 0x00, 0x01, 0x80, 0x18, 0x00, 0x0f, 0xe0, 0x7f, 0x00, 0x3f, 0xf9, 0xff, 0xc0, 0x7f, 0xf9, 0xff, 0xc0, 0x7f, 0xff, 0xff, 0xe0, 0x7f, 0xff, 0xff, 0xe0, 0xff, 0xff, 0xff, 0xf0, 0xff, 0xf7, 0xff, 0xf0, 0xff, 0xe7, 0xff, 0xf0, 0xff, 0xe7, 0xff, 0xf0, 0x7f, 0xdb, 0xff, 0xe0, 0x7f, 0x9b, 0xff, 0xe0, 0x00, 0x3b, 0xc0, 0x00, 0x3f, 0xf9, 0x9f, 0xc0, 0x3f, 0xfd, 0xbf, 0xc0, 0x1f, 0xfd, 0xbf, 0x80, 0x0f, 0xfd, 0x7f, 0x00, 0x07, 0xfe, 0x7e, 0x00, 0x03, 0xfe, 0xfc, 0x00, 0x01, 0xff, 0xf8, 0x00, 0x00, 0xff, 0xf0, 0x00, 0x00, 0x7f, 0xe0, 0x00, 0x00, 0x3f, 0xc0, 0x00, 0x00, 0x0f, 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
void onBeat()
{
Serial.println("Beat!");
oled.drawBitmap( 60, 20, bitmap, 28, 28, 1);
oled.display();
}

void setup()
{
Serial.begin(9600);
oled.begin();
oled.clearDisplay();
oled.setTextSize(1);
oled.setTextColor(1);
oled.setCursor(0, 0);

oled.println("Initializing pulse oximeter..");
oled.display();
Serial.print("Initializing pulse oximeter..");

if (!pox.begin()) {
Serial.println("FAILED");
oled.clearDisplay();
oled.setTextSize(1);
oled.setTextColor(1);
oled.setCursor(0, 0);
oled.println("FAILED");
oled.display();
for(;;);
}
else {
oled.clearDisplay();
oled.setTextSize(1);
oled.setTextColor(1);
oled.setCursor(0, 0);
oled.println("SUCCESS");
oled.display();
Serial.println("SUCCESS");
}
pox.setOnBeatDetectedCallback(onBeat);
}

void loop()
{
pox.update();

if (millis() - tsLastReport > Sec) {
Serial.print("Heart BPM:");
Serial.print(pox.getHeartRate());
Serial.print("-----");
Serial.print("Oxygen Percent:");
Serial.print(pox.getSpO2());
Serial.println("\n");
oled.clearDisplay();
oled.setTextSize(1);
oled.setTextColor(1);
oled.setCursor(0,16);
oled.println(pox.getHeartRate());

oled.setTextSize(1);
oled.setTextColor(1);
oled.setCursor(0, 0);
oled.println("Heart BPM");

oled.setTextSize(1);
oled.setTextColor(1);
oled.setCursor(0, 30);
oled.println("Spo2");

oled.setTextSize(1);
oled.setTextColor(1);
oled.setCursor(0,45);
oled.println(pox.getSpO2());
oled.display();
tsLastReport = millis();
}
}

arduino port enable

How to enable com port for Arduino board -step by step

right click on the "THIS PC" or "MY COMPUTER", then click Mange

it open a new window,  In that select Device Manager and find the port of the board, 

(connect the Arduino board and disconnect it, you can find the board)  

Then double click the port 

Then select the driver and click Update driver

then click "Browse my computer for driver software" 

then browser the Arduino driver folder

after browse the folder then click next

it start installing wait for a few minutes

now click install and wait  

now the drive will be installed. now close it 

now it shows the port of the board .

Youtube tutorial

installation of arduino ide

How to install Arduino IDE in window-10

1.Open the Arduino official website (Arduino site)

2.Then scroll down and Download the latest Arduino IDE or Arduino IDE (Beta)

3.Then extract the zip file 

4.Then create a shortcut file and send t to desktop 

youtube tutorial