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公开(公告)号：US20210054790A1
公开(公告)日：2021-02-25
申请号：US17092570
申请日：2020-11-09
Applicant: ABB Schweiz AG
Inventor： Camilo Lopez , Mark Foltz , Steve Miller , Kevin Dowdell , Mark Weland , Alan Majors , Xudong Yang
Abstract: A speed control system and a power load balance detector for a turbine is provided. The speed control system includes a speed wheel with a plurality of teeth. A timer stores a time stamp when each of the teeth passes by a speed probe. A first speed estimate is determined for overspeed protection, and a second speed estimate is determined for operational speed control. The power load balance detector trips or shuts down the turbine when an unbalance is above a first threshold and the speed of the turbine is above a second threshold.
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