General provisions of small thermal power plant generator excitation system?

1,the local thermal power plants should be according to the unit type exciter equipped standby armature or rectifier excitation device of spare parts.2,on the same commutator or slip

rings,especially on the same polarity,should use the same brand of brush.Brush in the brush frame should be able to free up and down (general gap of 0.1~0.2 mm).3,the generator should be equipped with forced excitation device and automatic adjusting excitation gasoline generator parts device.(including stopping and starting) in normal operation of the device must be input.4,in addition to automatic excitation regulator,in the excitation circuit of dc exciter,shall also have the manual adjusting excitation electrical and mechanical pressure field rheostat.

On the rheostat,equivalent to a generator no-load rotor and stator and rated conditions,should be in the red line.In the manual rheostat mechanical transmission device,also should be on the same token.In addition,in the mechanical transmission device,should draw arrows,pointed out that the direction of ac geared motor the mechanical transmission device rotation when enhanced excitation.All within the same power plant generators of this rotation,should be consistent.5,the generator should be equipped with automatic field suppression device (except brushless excitation system),and should be under the condition of the rotor winding insulation allowed by the overvoltage drop-out as soon as possible.