초록 ▼

A voltage control arrangement for a system of multiple windfarms with transmission lines. Voltage is regulated at a point of regulation on the system, such as a high voltage substation or other system bus. Regulation is achieved at the point of regulation by sensing the voltage, comparing to a refer

A voltage control arrangement for a system of multiple windfarms with transmission lines. Voltage is regulated at a point of regulation on the system, such as a high voltage substation or other system bus. Regulation is achieved at the point of regulation by sensing the voltage, comparing to a reference voltage, and adjusting the reactive power output of the wind turbines and other equipment in the system. The regulation point may be shifted to another point if needed to respect voltage limits at that points of the system after attempting to shift reactive load to restore voltage within limits at the other points in the system. The reference voltage may be adjusted to minimize losses for the system of multiple windfarms and transmission lines. A loss optimizing algorithm is applied to the combined multiple windfarm and transmission line to shift reactive load among local windfarms to minimize losses and to shift reactive load among individual wind turbines within an individual windfarm.

대표청구항 ▼

The invention claimed is: 1. A system for controlling voltage at a voltage regulation point on a system of windfarms comprising:a plurality of local windfarms;a collector bus for each local windfarm;at least one transmission line connecting a point of common coupling for the collector buses to a poi

The invention claimed is: 1. A system for controlling voltage at a voltage regulation point on a system of windfarms comprising:a plurality of local windfarms;a collector bus for each local windfarm;at least one transmission line connecting a point of common coupling for the collector buses to a point of interconnection with a grid;a local windfarm controller for each local windfarm, adapted for control of a generation of real power and reactive power for each individual generator of a local windfarm;a control system configured to generate reactive power commands for each local windfarm controller for controlling voltage at the voltage regulation point subject to at least one additional constraint on an operating parameter of at least one of the collector bus for each local windfarm and the at least one transmission line, wherein the control system is further configured to implement a constraint algorithm to determine when the operating parameter has exceeded a predesignated limit and to control the reactive power commands generated for each local wind farm controller so that the at least one additional constraint is not violated.