Study On The Leading Phase Operation Of600MW Turbine Generator

With the rapid development of China’s national economy, the capacity of the pitcrew is the rapid increase in the capacitive load of the grid increases rapidly, causingthe grid voltage increases, the generator power factor close to0.99, close into theregion, the high system voltage reduce the service life of electrical equipment, reducepower system economy. Generator to run a smooth regulator characteristics, does notincrease the power grid investment under the premise, the excess reactive powerabsorption at low load at night, to improve the quality of the grid voltage, with theadvantages of high economic and effective regulator. Reduce the turbine generatorexcitation current, allowing the late phase stage into Phase stage to go to Phase phaseof the process stage by the late phase, from the issue of reactive power to go to theprocess of absorbing reactive. By changing the generator excitation current canchange the turbine generator reactive power. When the turbine generator at theexcitation stage, the reactive component of the reactive power generator release latewith the armature current is accompanied by the excitation current is reduced downto decrease; when the turbine generator in the conventional excitation stage reactivepower and reactive component of armature current are all0, this time, because theexcitation current decreases, the turbine generator issue ahead of the reactive powerturbine generator into phase by the late phase stage into stage. Taking into accountthe sudden overload of the generator actual static stability limit, should be left to theappropriate reserves, so that does not change the excitation current, able to withstanda sudden overload.Static stability limit is the limit for the excitation Operation stator end coretemperature rise into the phase depth limit, the low excitation Phase depth limit,turbine generator excitation Operation of the main considerations the main factor ofthe machine terminal voltage of the generator into the phase depth restrictions. In actual operation, the turbine generator should be run in the stability limit of the range,and should allow sufficient static stability reserve.600MW turbine generator into phase operation, theoretical analysis, analysis ofthe depth of the generator into the relative generator outlet voltage, plant bus voltage,heating and static stability limit of the generator coil end;600MW Steam TurbineGenerator process simulation modeling, the establishment of less excitationconditions, the stator voltage, reactive power, stator end of the fever model, and thepower angle and admission data; combination of600MW turbine generator into thephase test process and results to determine the Phase depth, and proposed to ensurethat the600MW turbine generator safety into run specification,600MW-class turbinegenerator into phase test results analysis, to provide relevant theoretical basis for thesafe and stable operation of power plant.