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description Journal article public Poli-Teknologi

Analisis Harmonisa Electronic Load Control (Elc) Pada Pembangkit Listrik Tenaga Mikro Hidro (Pltmh)

Ali Mashar, Dja’Far Sodiq
Diterbitkan 2011

Abstrak

Electronic Load Control (ELC) is a common unit used in Micro Hydro Power Plants with synchronous generator to keep network frequency at its nominal. The ELC regulates the power of dummy load as the power flowing to load (consumers) varies. Maintaining frequency is just the same as maintaining the output active power of the plant (generator). If there is change on the load the ELC regulates the power flowing to the ballast (dummy load) by chopping the voltage electronically. Such operation will generate harmonics in the system which can cause problems such as audio noisy and mal function of protection system. This paper evaluates the harmonics content of the ELC in Total Harmonic Distortion (THD) and its influences to the system voltage. Experimental evaluations have been conducted at both laboratory and plant. It gives result that there is un tolerable harmonic content generated by the control unit based on IEEE 519-1992. It gives the same results on the system voltage quality.

Keywords : Micro Hydro Power Plant, Electronic Load Control (ELC), ballast, Total Harmonic Distortion (THD).

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Metrik

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