Career Episode Assignment- Hydropower Plant
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Added on 2020-05-28
Career Episode Assignment- Hydropower Plant
Added on 2020-05-28
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CAREER EPISODE -3Project Name:Upgradation of Protection Relays for 4X11kV Generatorsa.IntroductionCE3.1: The corresponding episode would describe my work experience in restoration of thesystem functionality and upgrading the generator protecting system at ChhukhaHydropower Plant. The upgradation project ran for 1 year between 2015 and 2016. Iwas working at Chhukha Hydropower Plant under Druk Green Power CorporationLimited. I was selected as the project manager of the project due to my experience asmaintenance engineer for the power plant’s control and protecting system. The projectwas required to be completed in the limited budget and duration of time that had beenestimated. b.BackgroundCE3.2: Druk Green Power Corporation Limited is the sole electricity production organizationthat operates and maintains its 4 large scale hydropower plants within Bhutan. Out ofthe 4 hydropower plants of Druk Green Power Corporation Ltd (DGPC), the ChhukhaHydropower Plant holds the place for the oldest power plant of DGPC as it was the firsthydropower plant of the organization which was built in 1983. However, during the endof 2014, the plant has been facing some major issues at the generator protecting system.The issue of slow response of the electromechanical relays with the increment of ageingand tending to obsolesce within the market were the two issues faced by the mechanicalgenerator. The project had been initiated to upgrade the generator’s protection systemwith the help of replacing the current electromechanical relays with the numericalrelays for protection. The relays were manufactured by the state of the art technologyand it would help in resolving the issues. The procurement, testing, installation, andPage 1 of 8
commissioning activities are the in scope items of the project for implementing the4X11 KV generators numerical relay. CE3.3: The main objective of the project was for implementing the 4X11 KV generatorsnumerical protection relay along with the following objectives,•Preparation of power plant towards automation•Elimination of maintaining inventory stocks•Embracing new technologyCE 3.4: Being the project manager and electrical engineer as well, I have to be involved inproject team leading, dismantling the current relays, connected wiring circuits,installation of the numerical protection relays, test process and commission process ofrelay, daily progress monitoring for the work, and ensuring that the work place safetyis implied. The following diagram would show the contemporary organogramdepicting my position in the green block below,Page 2 of 8
Figure 1: Shows the Organizational structure of Chhukha Hydropower PlantCE 3.5: I was assigned the task to restoration of the stator of the generator-1 of ChhukhaHydropower Plant and was assured by the Executive Engineer to be assisted completelyfrom other non-technical and technical staffs present in Chhukha Hydropower Plant. Ihad to play the role of project manager by managing and leading the project team forinstalling, testing, and commissioning the relays (microprocessor based) for the 4X11KV relays. The project activities had required the knowledge of switchgear and powersystem along with experience of practical implementation of the knowledge at thepower plant. The project would also comprise of ensuring the project successfulPage 3 of 8Chief EngineerMaintenance DivisionControl & Protection Unit(C&PU)Generator Mainteannce Unit(GMU)Turbine Maintenance Unit(TMU)Switchyard Maintenance Unit(SMU)Operation DivisionCivil DisionHuman Resource and Administration DvisionFinance DivisionTechnical Support Unit(TSU)
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