Abstract: Systems and methods enable yaw offsets on wind turbines in a wind farm. A wind turbine yaw controller receives a present wind direction signal from a local wind direction sensor and aligns the wind turbine in a substantially perpendicular direction based upon the present wind direction signal. A yaw controller is retrofitted between the wind direction sensor and the yaw controller to provide an adjusted wind direction signal to the yaw controller based upon the present wind direction signal and a yaw offset signal. An offset table relating yaw offsets with wind direction signal values may be stored locally at a wind turbine or at a site controller in communication with the wind tribune. Each wind turbine in the wind farm may be retrofitted with the yaw controller to enhance the power output of the wind farm by adjusting the wake effect between wind turbines of the wind farms.

Abstract: One example includes a wind farm power control system. The system includes a wind farm controller configured to monitor a power characteristic at a high-side of a generator step-up (GSU) transformer. The high-side of the GSU transformer is coupled to a point-of-interconnect (POI) that provides power from the wind farm to a power grid. The system also includes an automatic voltage regulator (AVR) configured to monitor a voltage of a power bus associated with a low-side of the GSU transformer, the power bus being provided power from a plurality of feeder groups. Each of the plurality of feeder groups includes a plurality of wind turbines. The AVR can be further configured to regulate the power characteristic at the high-side of the GSU transformer to within a predetermined range of amplitudes based on the voltage of the power bus.

Abstract: One example includes a wind farm power control system. The system includes a wind farm controller configured to monitor a power characteristic at a high-side of a generator step-up (GSU) transformer. The high-side of the GSU transformer is coupled to a point-of-interconnect (POI) that provides power from the wind farm to a power grid. The system also includes an automatic voltage regulator (AVR) configured to monitor a voltage of a power bus associated with a low-side of the GSU transformer, the power bus being provided power from a plurality of feeder groups. Each of the plurality of feeder groups includes a plurality of wind turbines. The AVR can be further configured to regulate the power characteristic at the high-side of the GSU transformer to within a predetermined range of amplitudes based on the voltage of the power bus.

Abstract: Systems and methods enable yaw offsets on wind turbines in a wind farm. A wind turbine yaw controller receives a present wind direction signal from a local wind direction sensor and aligns the wind turbine in a substantially perpendicular direction based upon the present wind direction signal. A yaw controller is retrofitted between the wind direction sensor and the yaw controller to provide an adjusted wind direction signal to the yaw controller based upon the present wind direction signal and a yaw offset signal. An offset table relating yaw offsets with wind direction signal values may be stored locally at a wind turbine or at a site controller in communication with the wind tribune. Each wind turbine in the wind farm may be retrofitted with the yaw controller to enhance the power output of the wind farm by adjusting the wake effect between wind turbines of the wind farms.

Abstract: A telecommunications toll network system employs a central database computer to provide routing and calling rate instructions to toll switches. To allow sponsors of pay services, such as 900 number information services, to control the kinds of calls they receive and the rates charged, the central database computer employs routing plans. These routing plans contain conditional branches selected based on data provided in a query from the originating toll switch (OTS) and sent to the database computer via common channel signaling (CCS). According to embodiments, sponsors can insert objects, called rate nodes, in their routing plans to override the default rate to be applied to the call. Rate nodes are non-branching elements inserted in a routing plan that specify a rate to be used for billing. The rate is specified on the automated message accounting (AMA) record and used by a billing platform to generate bills to the callers.

Abstract: A telecommunications toll network system employs a central database computer to provide routing and calling rate instructions to toll switches. To allow sponsors of pay services, such as 900 number information services, to control the kinds of calls they receive and the rates charged, the central database computer employs routing plans. These routing plans contain conditional branches which are selected based on data provided in a query from the originating toll switch (OTS) and sent to the database computer via common channel signaling (CCS). According to the invention, sponsors can insert objects in their routing plans to override the default rate to be applied to the call. These objects are called rate nodes. Rate nodes are non-branching elements inserted in a routing plan that specify a rate to be used for billing. The rate is specified on the automated message accounting (AMA) record and used by a billing platform to generate bills to the callers.

Abstract: A communications system is designed to create a sub-account AMA record for each transaction requested by a caller within a single 900-number call after an initial transaction has been processed. Such sub-account record includes the rate charged for each transaction. Such rate may vary from transaction to transaction and may even negate all charges for an entire call. The sub-account record permits an itemized bill to be created for all transactions processed during such call.

Abstract: A method for providing called service provider control of caller access to pay services provides for the establishment of service provider criteria controlling whether a particular call to a pay service provider is blocked or passed through a toll network to the pay service provider. For example, an undesirable ANI table is established for all callers who are undesirable for one reason or another, for example, if they have not paid for previously ordered products or pay for information service calls. Moreover, a pay service provider may establish a minimum call score and a caller score table whereby a caller having a good payment history may accumulate a high caller score. The caller score is compared with the minimum call score and the call blocked if the minimum call score is not exceeded.