IOT BASED FAULT ANALYSIS SYSTEM OF THREE PHASE INDUCTION MOTOR
The IOT based Three phase fault analysis of three phase induction motors.The project develops an automatic tripping mechanism for the three-phase systems of induction motors and transmission system as well. In the event of a temporary fault, the output of the project res
Project Title
IOT BASED FAULT ANALYSIS SYSTEM OF THREE PHASE INDUCTION MOTOR
Project Area of Specialization
Project Summary
The IOT based Three phase fault analysis of three phase induction motors.The project develops an automatic tripping mechanism for the three-phase systems of induction motors and transmission system as well. In the event of a temporary fault, the output of the project resets while it acquires permanent trip condition in case of a permanent fault. There can occur several failures in a
three-phase supply system that provides power to industrial and domestic consumers. These failures are results of some faults which may be temporary or permanent in nature. Due to these faults, the power system may suffer considerable damage. This can lead to disturbance in power supply and may cause a standstill to various industries linked to the system. In a three phase power system, these faults are classified as LG (Line to Ground), LL (Line to Line), 3L (Three lines). This system can overcome such problem which by sensing the fault
automatically and disconnects the system from the supply so that large scale damage to the system equipment can be avoided. The system automatically differentiates between a temporary disturbance and a permanent fault and appropriately cuts the supply for a short duration or long respectively.
Project Objectives
The high priority objectives for this project includes.
- IOT based three phase fault analysis
- This project not only used for induction motors but also for the the transmission lines in distribution lines by using GSM modem.(global system for mobile communication). So by using GSM devices three phase faults can be detected and find easily
- Fault which occurs on transmission lines not only affect the equipment but also the power qquality. The main objectives of the project is to auto reclosing of the supply in case of temporary fault and trip in case of permanent fault.
- This system can play a pioneering rule in safety and protection purposes.
- It is very useful system which can protect not only equipments,accessories and home appliances but also useful for humans life.
Project Implementation Method
The project uses 6 numbers step-down transformers for handling the entire circuit under low voltage conditions of 12v only to test the 3 phase fault analysis. The primaries of 3 transformers are connected to a 3 phase supply in star configuration, while the secondary of
the same is also connected in star configuration. The other set of 3 transformers with its primary connected in star to 3 phase have their secondary connected in Delta configuration. The outputs of all the 6 transformers are rectified and filtered individually and are given to 6
relay coils. 6 push buttons, every button connected across the relay coil is meant to
create a fault condition either at star i.e. LL Fault or 3L Fault. The NC contacts of all the relays are made parallel while all the common points are grounded. The parallel connected points of NC are given to pin2 through a resistor R5 to a 555 timer i.e. wired in monostable
mode. The output of the same timer is connected to the reset pin 4 of another 555 timer wired in stable mode. LEDs are connected at their output to indicate their status. The output of the U3 555 timer from pin3 is given to an Op-amp LM358 through wire 11 and d12 to the non
inverting input pin3, while a potential divider RV2 keeps the inverting input at fixed voltage. The voltage at pin2 coming from the RV2 (potential divider) is held such that it is higher than the voltage at pin3 of the Op-amp used as a comparator. As a result, pin1develops zero logic
that fails to operate the relay through the driver transistor Q1. This relay Q1 is 3CO relay i.e.
it disconnects the load to indicate fault condition. Hardware working model of proposed
Benefits of the Project
The aim of this project is To reduce the outage time due to faults and provide higher level of service continuity to the customers. To maintain system stability.
Technical Details of Final Deliverable
The board is powered from a 3phase supply but all the 6 relay coils get DC voltage and Three Phase Fault Analysis with Auto Reset for Temporary Fault and Permanent Trip for Permanent Fault. their common point disconnects from the NC and moves on to the NO points there by providing logic high at pin2 of 555 timer U1 i.e. that is kept on monostable mode. When any push button across the relay is pressed, it disconnects that relay and in the process in common contacts moves to the NC position. It provides a logic low at trigger pin of 555 timer to develop an output that brings the U3 555 timer which is used in astable mode, for its reset pin to high such that the astable operation takes place at its output which is also indicated by flashing D11 LED. If the fault is off temporary in nature i.e. if the push button pressed is released immediately the U1monostable disables U3. The output then goes to zero in the event of any push button kept pressed for a longer duration.The monostable output provides a longer duration active situation for U3 astable timer, the output of which charges capacitor C13 through R11 such that the output of the comparator goes high so that it drives the relay to disconnect the three phase load. The output of Op-amp remains high indefinitely through a positive feedback provided for its pin1 to pin3 through a forward biased diode and a resistor in series. As a result, the relay is permanently switched on to disconnect the load connected at its NC contacts permanently off. In order to maintain the flow of DC supply the star connected secondary set DCs are paralleled through D8,D9& D10 for uninterrupted supply to the circuit voltage of 12v DC and 5v DC derived out of voltage regulator IC 7805
Final Deliverable of the Project
Core Industry
Other Industries
Core Technology
Other Technologies
Sustainable Development Goals
Required Resources
| Item Name | Type | No. of Units | Per Unit Cost (in Rs) | Total (in Rs) |
|---|---|---|---|---|
| Accessories and equipments | Miscellaneous | 30 | 200 | 6000 |
| Total in (Rs) | 6000 |
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