A STUDY ON THE IMPLEMENTATION OF SINGLE POLE AUTO-RECLOSE (SPAR) AND THREE POLE AUTO-RECLOSE (TPAR) ON SYSTEM STABILITY IN COALFIRED POWER PLANT OUTLETS
High-voltage overhead lines are highly susceptible to faults, especially temporary ones that can disrupt power supply. To occurrence of faults will lead the circuit breakers at the lines to open to protect the lines. The implementation of an autoreclose (AR) scheme is essential, as it allows the...
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| Format: | Theses |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/87690 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | High-voltage overhead lines are highly susceptible to faults, especially temporary
ones that can disrupt power supply. To occurrence of faults will lead the circuit
breakers at the lines to open to protect the lines. The implementation of an autoreclose
(AR) scheme is essential, as it allows the line to automatically reclose after
a temporary fault. However, for large turbine generators, such as those in coalfired
power plants (CFPPs), improper reclose operations carry serious risks. Two-phase
or three-phase faults are more dangerous than single-phase faults because they
generate stronger transients that are more difficult to manage. Incorrect reclose
operations under these conditions can worsen the situation.
This study analyzes and implements Single Pole Auto-reclose (SPAR) and Three
Pole Auto-reclose (TPAR) schemes on high-voltage transmission lines connected
to the Labuan Power Plant outlet. Simulation results indicate that the generator
can maintain synchronization during normal operations and when one line is out
of service for maintenance. Even when faults occur on another line during
maintenance, the generator remains synchronized after the fault is cleared. These
schemes have been implemented and tested on the Labuan-Saketi and Labuan-
Menes transmission lines. The test results demonstrate that the designed autoreclose
scheme can operate reliably, support automatic system recovery, and
enhance the reliability of the Labuan Power Plant's transmission system. |
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