Control System and Strategy for Generator Set

摘要

A plurality of generator sets, or gensets, each including an electrical generator operatively associated with a prime mover, are arranged in parallel to generate electrical power for an isolated electrical load. To account for fuel efficiency, emissions considerations or similar consideration associated with the prime movers, an asymmetric load sharing method may be used to regulate operation of the plurality of gensets. A control strategy is configured to allocated real power demands of the electrical load among the plurality of gensets in accordance with the asymmetric load sharing method. The control strategy may account for the reactive power portions of the electrical load in addition to the real power portions.

主权项

1. A method of operating a plurality of gensets in an asymmetric load sharing arrangement with respect to an electrical load, the method comprising:
receiving a real power request from the electrical load; optimizing a real power request per genset for each of the plurality of gensets based on at least one of the real power request, fuel consumption considerations, and emission considerations; calculating a calculated reactive power request per genset for each of the plurality of gensets based on the real power request per genset and a rated power factor associated with each of the plurality of gensets; determining a total reactive power offset based on the calculated reactive power request per genset and an actual reactive power request from the electrical load; allocating the total reactive power offset among the plurality of gensets to provide a reactive power offset per genset for each of the plurality of gensets; determining a final reactive power request per genset for the plurality of gensets based on the reactive power offset per genset and the calculated reactive power request per genset; and operating each of the plurality of gensets in accordance with the respective final reactive power request per genset.