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Abstract
The velocity modulation system work unstable is one of questions which the power plant steam turbine equipment occurs frequently, also is in at present governing system one of most prominent questions, its main manifestation is when the unit spatial load movement rotational speed swinging, has when the load movement shoulders swinging, this kind of swinging has periodically also has the aperiodicity, has continual also has interrupted, has the fixed point (i.e. only to swing under some load) also has the non-fixed point, this kind of swinging created the unit compound electrical network to be difficult, threatens the equipment the safe operation, even affected the electrical network cycle the stability.Causes the governing system work unstable factor to be very many, displays the sign is also various, eliminates this equipment flaw, usually needs to carry on the detailed system test, the observation and the earnest analysis research, can eliminate the false and kee