The purpose of this project is to acquire the remote electrical parameters like voltage, current and frequency and send these real time values over gsm network using gsm modem/phone along with temperature at power station. This project is also designed to protect the electrical circuitry by op
Substation Monitoring and Control Using Microcontroller & GSM
The purpose of this project is to acquire the remote electrical parameters like voltage, current and frequency and send these real time values over gsm network using gsm modem/phone along with temperature at power station. This project is also designed to protect the electrical circuitry by operating an spdt relay. This relay gets activated whenever the electrical parameters exceed the predefined values. The relay can be used to switch off the main electrical supply. User can send commands in the form of sms messages to read the remote electrical parameters. This system also can automatically send the real time electrical parameters periodically (based on time settings) in the form of sms. This system can be designed to send sms alerts whenever the relay trips or whenever the voltage or current exceeds the predefined limits. This project makes use of a microcontroller. The controller can efficiently communicate with the different sensors being used. The controller is provided with some internal memory to hold the code. This memory is used to dump some set of assembly instructions into the controller. And the functioning of the controller is dependent on these assembly instructions. The controller is programmed using embedded c language.
To improve quality of power
Remote sensing
To Maintain Continuity of supply
Real time monitoring.
HARDWARE IMPLEMENTATION:
Whole Circuit consiting of parts: microcontroller circuit, current mesurementcicuit, Voltage measurement cicuit& GSM. Transformers are used for step down the volage from 230V to 12V as microcontroller cicuit works on 12V. The Transformer of which condtion monitoring is desired also supplied by 230V.First A 230-12Vtrasnformer step down the volatge for microcontroller circuit. And this input power is converted into DC from AC by means of Bridge Rectifier as micontroller works on DC. Then there are 2 ICs placed, which are IC7805 and IC7812 which are placed to supply 5V to LCD and 12V to ATmega8 Microcontroller. Now the same supply of 230V is also given to trasnformer to be moniter. From this transformer we have made a Grid system. By this Grid system we have taken connections for Voltage measurement cicuitAnd Current measurement circuit. In voltage measurement cicuit we first stepdown the volatge from 230 to 12V and given to bridge rectifier to convert it into DC. Now this singal is running to the microcontroller. We have provided Volatge regulator in series with circuit so that we can demonstrate the condition in which voltage varies. Similarly One conection is also taken to the circuit for Current. Here we have Current Sensor IC WCS2202 which stands for both as C.T and also rectifier. This signal from current sensor is given to microcontroller. Now Microcontroller will check the parameters received. If these parameters are not in specified limit, say for this case, Volatge is not in between 100V to 210V or currnet is over 800mA then microcontroller will send a singnal to GSM kit. But GSM works on RS 232 and microcontroller on TTL logic. So we have used MAX232 as translator from TTL to RS232 and vice versa. Now This GSM kit will send a SMS to respective person as Alert with Volatge and Current Values. From which respective actions will be taken by respective person to solve the problem
Substation/power station voltage can be monitored from anywhere in the world.
Feedback of the devices being operated can also be developed.
Efficient and low cost monitoring system.
Easy to monitor and user friendly.
Using this project it can minimize working efforts and improve accuracy,statbility,efficiency.In this project,sensors are used to sense the main parameters of equipment such as Voltage,Current(over voltage,undervoltagage,over current).This sensed data is sent to microcontroller and this controller checks parameter limits which further send to the mobile sim card using gsmmodem.Delivery of these data via sms makes sure the right information is in hand to the operator and operator can make useful decisions on basis of that data of parameters.
| Item Name | Type | No. of Units | Per Unit Cost (in Rs) | Total (in Rs) |
|---|---|---|---|---|
| 16×2 parallel LCD display | Equipment | 2 | 500 | 1000 |
| Atmega8 Microcontroller. | Equipment | 2 | 400 | 800 |
| BASCOM AVR | Equipment | 1 | 20000 | 20000 |
| Bridge Rectifier | Equipment | 4 | 300 | 1200 |
| Capacitors | Equipment | 5 | 100 | 500 |
| SIM-908 GSM module | Equipment | 1 | 10000 | 10000 |
| Diode | Equipment | 2 | 50 | 100 |
| IC 7805 & IC 7812 Voltage Regulator | Equipment | 4 | 250 | 1000 |
| IC Max 232 | Equipment | 1 | 200 | 200 |
| ISP Socket | Equipment | 1 | 100 | 100 |
| LED | Equipment | 4 | 100 | 400 |
| Step Down Transformer | Equipment | 2 | 700 | 1400 |
| Switch | Equipment | 1 | 100 | 100 |
| Current sensor | Equipment | 1 | 300 | 300 |
| Other Accessories | Miscellaneous | 2 | 1000 | 2000 |
| Jumper Wires | Equipment | 50 | 20 | 1000 |
| Thesis Printing | Miscellaneous | 9 | 800 | 7200 |
| Arduino | Equipment | 2 | 1500 | 3000 |
| Total in (Rs) | 50300 |
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