Arc Flash Mitigation Using Active High-Speed Switching

  • February 5, 2016
  • Blog
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Arc Flash Mitigation Using Active High-Speed Switching

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HIGH POWER ARC FREE SWITCHING IN INDUSTRIES AND POWER DISTRIBUTION USING PLC

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ABSTRACT

Nowhere, the new system for switching high power electrical system using Micro-Electromechanical system with PLC network is presented well here.Micro Electro Mechanical Systems (MEMS) are the integration of mechanical elements, sensors, actuators and electronics on a common substrate using integrated circuit process sequences. MEMS based RF circuit could have a larger impact on handset applications because of their inherent small size and electrical performance. The essential idea in PLC- MEMS is to use miniature mechanical devices and physical motion to achieve the function of a microwave switch.

Advantages of MEMS Switching:

Low insertion loss, high isolation, low power consumption, extreme linearity and the ability to be integrated with other electronics make MEMS switches an attractive to other mechanical and solid-state switches. Owing to good V-I characteristics the output delivered to load will increase and energy utilization becomes efficacious.

Existing system:

 Mechanical switches have been used for more than a century to physically open electrical circuits and stop the flow of current. Today’s power protection systems use breakers or switches due to the rapidly rising current but it cause damage to the devices. However it could produces the excessive power loss and ARC Interruption. Due to presence of arc and switching losses the output may reduce and not safety for users. To prevent this we need to include the protection circuit which increases the size and cost of switches.

Proposing system:

Usually there are some abnormal condition may arise during switching operation, therefore we need a conventional power circuit protection device. Here we use a micro-scaled ultra-fast mechanical switching with RF technique to reduce the arc interruption. Transitioning from macro-scale to the micro-scale switching enables a major technical breakthrough in the field of electrical switching. By using this micro switching isolation, RF performance can be increasing over such as electromagnetic relays

What is PLC?

Power-line communication (PLC) carries data on a conductor that is also used simultaneously for AC electric power transmission or electric power distribution to consumers. It is also known as power-line carrier. Typically transformers prevent propagating the signal, which requires multiple technologies to form very large networks. Various data rates and frequencies are used in different situations.

Working:

MEMS based microsecond arc less interruption can deliver the low power switching contacts in the circuit from mitigate damage to the conductors. We have to create the nano-sized switching contact MEMS for secure switching from power loss and devices malfunction. ARC energy between the switching contacts is reduced by a factor up to one-million. Here MEMS switch is interconnected to the PIC microcontroller with the help of I2C bus interface. With the help of MEMS switch we have to control the load with the isolation circuit

PIC microcontroller is to be interfaced with the isolation circuit to isolate the controlling device from the high-power device. Using the MEMS switch we have to monitor and control the load devices apparently .Initially the PLC network has been created using PLC Modem with monitoring and control unit. When the switching takes place using MEMS the acceleration value will send to microcontroller through I2C network. That signal will passes to load through PLC network. By using this we can operate the n- number of loads with high isolation, speed switching and arc free.

Software Libraries Used:

  • PIC18F Device Driver Library.
  • PLC Driver Library.
  • MEMS Device driver library.
  • I2C library.
  • PLC UART driver library.

Software Tools Used:                   

  • Programming Language : Embedded C
  • Development Tool :         MPLAB IDE 8.56v
  • Compiler :         C18

Embedded Protocols Used:

  • I2C – (Inter integrated circuit ) Serial communication Protocol
  • UART -(Universal Asynchronous Receiver & Transmitter) : Protocol

Hardware used:

  • Microcontroller : PIC 18f45j11.
  • PLC Module : Power Line communication.
  • Digital Display : 16X2 LCD.
  • MEMS           : Switching Load ON/OFF.
  • Buzzer : Alarm.
  • Battery / Adaptor :Battery 12V ,1.2 Amps
  • I/O Expander : PCF8574AP.

HIGH POWER ARC FREE SWITCHING IN INDUSTRIES AND POWER DISTRIBUTION USING PLC

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