Browsing by Author "Mudassar Iqbal"

Now showing 1 - 3 of 3
  • Thumbnail Image
    Item
    Agri-farm mobile app
    (UMT Lahore, 2022) Hamza Ali Zahid; Mudassar Iqbal; Mr. Umair
    The Agri_form Mobile App is to assist the Famers, fertilizer companies and a public user to buy and sell their products at one platform. Through this project, we are trying to boost up the supply of best fertilizers and pure products to farmers and public user as well by providing them better features like live chat, trading etc. Our theme is to facilitate the farmer, fertilizer companies and a public user to sell and buy their product with good price and without the fear of scam. In this Agri_form Mobile app system there will be an admin who will approve each new user when that will be signup. Admin will check order details and will approve or reject. This is a scam free application where any farmer can sell their product or can trade with their product. As farmers are facing the problem of pure fertilizers so at this platform the registered fertilizer companies will sell their products. Farmer will be able to buy pure fertilizer through this application.
  • Thumbnail Image
    Item
    Design of digital synchronism checking relay for interconnected power grids
    (University of Management and Technology, 10/9/2012) Mudassar Iqbal; Sohaib Saad, Muhammad; Shahid Farooq
    In this project we have designed a circuit to connect to parts of interconnected system energized by two different sources. By interconnecting separate utilities with the high voltage transmission system, it is possible to pool both generation and demand, not only providing a number of economic and other benefits, including a more efficient bulk transfer of power from generation to demand centers. The interconnected transmission system, by linking together all participants across the transmission system, makes it is possible to select the cheapest generation available. Transmission circuits tend to be far more reliable than individual generating units, and enhanced security of supply is achieved because the transmission system is better able to exploit the diversity between individual generation sources and demand. An interconnected transmission system enables surplus generation capacity in one area to be used to cover shortfalls elsewhere on the system, resulting in lower requirements for additional installed generation capacity, to provide sufficient generation security for the whole system. Without transmission interconnection, each separate system would need to carry its own frequency response to meet demand variations, but with interconnection the net response requirement only needs to match the highest of the individual system requirements to cover for the largest potential loss of power (generation) rather than the sum of them all. Main idea is to calculate voltage, frequency and phase angle of both sides using digital sampling and compare these values. If they lie in tolerable range then permission to close command is issued for respective circuit breaker. High performancePIC18F452 RISC CPU is used for processing the inputs. Sinusoidal signals from both ends of system are converted to digital form and after half wave rectification these samples are used for calculation of voltage. To measure frequency input sine wave is converted to square wave and then positive edge triggered external interrupts are used to count the number of cycles in one second. Measuring phase angle was quite an interesting task and caused a lot of effort. Time difference between starting of two waves is used to compute phase angle. Monitoring the system using synchro check relay before synchronization of supplies for the confidence of utility can save from a lot of trouble caused by out of step trippings.
  • No Thumbnail Available
    Item
    Design of digital synchronism checking relay for interconnected power grids
    (UMT Lahore, 2012-10-09) Mudassar Iqbal; Muhammad Sohaib Saad; Shahid Farooq
    In this project we have designed a circuit to connect to parts of an interconnected system energized by two different sources. By interconnecting separate utilities with the high voltage transmission system, it is possible to pool both generation and demand, not only providing a number of economic and other benefits, including a more efficient bulk transfer of power from generation to demand centers. The interconnected transmission system, by linking together all participants across the transmission system, makes it possible to select the cheapest generation available. Transmission circuits tend to be far more reliable than individual generating units, and enhanced security of supply is achieved because the transmission system is better able to exploit the diversity between individual generation sources and demand. An interconnected transmission system enables surplus generation capacity in one area to be used to cover shortfalls elsewhere on the system, resulting in lower requirements for additional installed generation capacity, to provide sufficient generation security for the whole system. Without transmission interconnection, each separate system would need to carry its own frequency response to meet demand variations, but with interconnection the net response requirement only needs to match the highest of the individual system requirements to cover for the largest potential loss of power (generation) rather than the sum of them all. The main idea is to calculate voltage, frequency, and phase angle of both sides using digital sampling and compare these values. If they lie in the tolerable range, then permission to close command is issued for the respective circuit breaker. A high-performance PIC18F452 RISC CPU is used for processing the inputs. Sinusoidal signals from both ends of the system are converted to digital form, and after half-wave rectification these samples are used for calculation of voltage. To measure frequency, the input sine wave is converted to a square wave and then positive edge-triggered external interrupts are used to count the number of cycles in one second. Measuring phase angle was quite an interesting task and required a lot of effort. The time difference between the starting of two waves is used to compute the phase angle. Monitoring the system using a synchro-check relay before synchronization of supplies for the confidence of the utility can save a lot of trouble caused by out-of-step trippings.