In this paper state-of-the-art in FACTS for WPPs with AC\ud connection is given. FACTS devices with their properties are\ud described. HVDC, which in literature is also often recognized as\ud FACTS device, is out of this paper scope. Academic and\ud industrial research in FACTS applicability for WPPs is\ud summarized. Examples of few existing FACTS applications for\ud wind farms are given.Peer ReviewedPostprint (published version

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To facilitate both generation and retailing to have an open access to the transmission grid for trading electricity, a real time procedure is proposed. The line flows for an operation are assumed to be available from PMU and WAM validated state estimation. Power tracing determines different transactions to supply a retailer's demand, losses related to each transaction, extent of use each transaction makes of a transmission circuit and its associated losses. A generalized quadratic form learns relationships between a retailer's demand and, (i) a generation's contribution to it at a point of receipt, (ii) losses in a transaction, (iii) share of a transaction in a line, (iv) its associated losses, through learning coefficients. The procedure then predicts a generator's contribution to a retailer's demand at the point of receipt, power loss for the transaction, share of transactions in a line at the retail end and its associated line losses, for an oncoming operating scenario.

Increasing awareness of power quality issues, deregulation, use of consumer devices sensitive to power system disturbance and possibility of making up some of the inherent design limitations through monitoring based operational strategies have created a need for extensive monitoring of the power system operation. Voltage disturbance is a common phenomenon in electric power distribution system operation.A fuzzy diagnostic procedure is proposed for detecting cause of voltage disturbance, so that appropriate remedial procedures could be initiated during system operation. Th method uses indices like PN factor, characteristic voltage, and zero sequence voltage and also proposes an index termed frequency jump index, extracted from zero sequence voltage using wavelets.

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