Download Remote monitoring of transformer or generator health over internet

Remote monitoring of transformer or generator health over internet
Abstract:
The main aim of the project is to acquire real-time data of distribution transformers
remotely over internet falling under the category of Internet of Things-IOT. For this real-time
scenario we take one temperature sensor, one potential transformer and one current transformer
for monitoring T, V, I data of the transformer and then send them to a remote location anywhere
in the world.
These three analog values are taken in multiplexing mode connected to a programmable
microcontroller of 8051 family through an ADC 0808. Then the values of all the sensors are
sent sequentially as per the frequency of multiplexing of the ADC by microcontroller .
They are then sent directly through an Wi-Fi module under TCP IP protocol to a
dedicated IP that displays the data in real time chart form in any web connected PC / Laptop for
display in 3 different charts. The real time data is also seen at the sending end upon a LCD
display interfaced to the microcontroller.
Description:
Transformers are a vital part of the transmission and distribution system. Monitoring
transformers for problems before they occur can prevent faults that are costly to repair and result
in a loss of service. Current systems can provide information about the state of a transformer, but
are either offline or very expensive to implement. Transformers being the essential part of power
transmission system are expensive, as is the cost of power interruptions. Because of the cost of
scheduled and unscheduled maintenance, especially at remote sites, the utility industry has begun
investing in instrumentation and monitoring of transformer. On-line transformer diagnostics
using conventional technologies like carrier power line communication, Radio frequency based
A2,GROUND FLOOR,OMEGA APARTMENT,NEAR KVB BANK,YELLAREDDY GUDA ROAD,OPP
RS BROTHERS,AMEERPET,HYDERABAD,TELANGANA-500073
www.esystems.co.in
control system, and Supervisory control and data acquiring systems, Distributed control systems
and Internet based communications are having their own limitations. GSM is an open, digital
cellular technology used for transmitting mobile voice and data services. This project objective is
to develop low cost solution for monitoring health condition of remotely located distribution
transformers using GSM technology to present premature failure of distribution transformers and
improving reliability of services to the customers. An Embedded based hardware design is
developed to acquire data from electrical sensing system. It consists of a sensing system, signal
conditioning electronic circuits, advanced embedded hardware for middle level computing, a
powerful computer network for further transmission of data to various places. A powerful GSM
networking is designed to send data from a network to other network for proper corrective action
at the earliest. Any change in parameters of transmission is sensed to protect the entire
transmission and distribution. The performance of prototype model developed is tested at
laboratory for monitoring various parameters like transformer over load, voltage fluctuations,
over temperature, oil quality and level etc.
The LPC2148 are based on a 16/32 bit ARM7TDMI-S™ CPU with real-time
emulation and embedded trace support, together with 128/512 kilobytes of embedded high
speed flash memory. A 128-bit wide memory interface and unique accelerator architecture
enable 32-bit code execution at maximum clock rate. For critical code size applications, the
alternative 16-bit Thumb Mode reduces code by more than 30% with minimal p e r f o r m a n c e
p e n a l t y . With their compact 64 pin package, low power consumption, various 32-bit
timers, 4- channel 10-bit ADC, USB PORT,PWM channels and 46 GPIO lines with up to 9
external interrupt pins these microcontrollers are particularly suitable for industrial control,
medical systems, access control and point-of-sale.
With
a wide range
of serial
communications interfaces, they are also very well suited for communication gateways,
protocol converters and embedded soft modems as well as many other general-purpose
applications.
A2,GROUND FLOOR,OMEGA APARTMENT,NEAR KVB BANK,YELLAREDDY GUDA ROAD,OPP
RS BROTHERS,AMEERPET,HYDERABAD,TELANGANA-500073
www.esystems.co.in
This project uses regulated 5V, 750mA power supply. 7805 three terminal voltage
regulator is used for voltage regulation. Bridge type full wave rectifier is used to rectify the ac
output of secondary of 230/18V step down transformer.
Block diagram:
A2,GROUND FLOOR,OMEGA APARTMENT,NEAR KVB BANK,YELLAREDDY GUDA ROAD,OPP
RS BROTHERS,AMEERPET,HYDERABAD,TELANGANA-500073
www.esystems.co.in
Power supply:
Hardware Requirements

Microcontroller

LCD display

A to D converter

Temperature sensors

Relay

Resistors

Capacitors

Diodes

Transformer

Voltage Regulator

Transistors

PT

CT

WiFi module as required
Software Requirements

Keil compiler

Language: Embedded C or Assembly.
A2,GROUND FLOOR,OMEGA APARTMENT,NEAR KVB BANK,YELLAREDDY GUDA ROAD,OPP
RS BROTHERS,AMEERPET,HYDERABAD,TELANGANA-500073
www.esystems.co.in