Caveat Lector: Although great care has been taken in the compilation of the information contained on this web site, the authors are not liable for the accuracy in terms of error or omission. The information on this web site is subject to change without notice and without obligation on the part of the authors. The authors shall not be liable for technical failures or for failures beyond their control. Some posts may contain authors' personal opinions and views and the authors do not represent any company, corporation or institution.

Sunday, August 8, 2010

Power System Analysis: Tripping of Transmission Line after restoration of Power

I am going to share my analysis on the event that happened recently on our substation. For an overview, there are four substations in radial system, first is the Substation A, next are Substations B, C, and D. The source of power is from substation A going to B, going to C and lastly to D. The distance relays of substation A to C are radially connected. It means that no looking back relay is installed on adjacent substation.

Sunday, August 1, 2010

troubleshooting defective jet water pump motor for drainage system

This morning, our jet water pump cannot draw water out in the Cable Trench Drainage at the substation. In just one year of operation, it baffles us that the water pump is already unusable. Anyways, here are the step by step procedures that we did in trying to repair our beloved pump: