Hi..Can You help me with circuit diagram of the project" Detecting Power Grid Synchronization Failure on Sensing Frequency or Voltage beyond Acceptable Range"
Urgent please..to benarodhi[at]yahoo.com
There are several power generation units connected to the grid, such as thermal, solar, etc. to supply power to the load. If any deviation in voltage and frequency exceeds the acceptable limit of the grid, then the same feeder should automatically disconnect from the grid. This prevents large-scale black out of the grid. Therefore, it is preferable to have a system that can warn the network in advance so that alternative arrangements are kept on hold to avoid a complete network failure. So we are designing a system based on a PIC microcontroller that is the family of specialized microcontrollers. The microcontroller monitors the voltage under / over voltage using voltage sensors and is being derived from a set of comparators. Since the frequency of the network can not be changed, the project uses a variable frequency generator (555-timer) to change the frequency, while a standard auto-transformer is used to vary the input voltage to test the operation of the project. A lamp load (indicating a predictable blackout) is being driven from the microcontroller in case the voltage / frequency goes out of the acceptable range and the fault indication will be indicated on the display.