from heavy demand areas. Growing power demands are mainly Abstract-New SVC was commissioned in March 2005 at commercial not industrial, i.e. represented by air-conditioners, MUSSAFAH 400kV/220kV substation in Abu Dhabi, UAE. The they are constant active power loads and tend to absorb more capacity of the SVC is +/-200MVA. The SVC consists of two reactive power when system voltage is lower. identical SVCs of +/-lOOMVA connected to 220kV bus, and they are operated as independently or in parallel. This SVC is located As far end of the 400kV network is connected to power near heavy load center with air-conditioner characteristic loads then the SVC design was carried out carefully. The SVC provides plantos Th e2ofkV circuit is mai ned by a Vr of * (capacitive) and -3OMVA (inductive) were obtained from the M. Ibrahima and A. A. Atia are with TRANSCO, Abu Dhabi, United Arab steady state analysis. Emirates 173 (
This paper reports the development of a converter for a large-capacity STATCOM. The converter consists of multiple series-connected 1.7kV module-type IGBTs. An active gate controlled circuit that we developed was applied to the IGBT gate drive circuit, eliminating large-capacity voltage-clamped snubber circuits or voltage balancing circuits that are conventionally needed for a series-connected IGBT converter, which considerably simplifies the converter. A rated-power test was performed, the results of which confirmed satisfactory performance of the developed converter.
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