| 摘要 |
<p>The invention relates to a method for monitoring the function of a rotating electric machine, in particular a dual-feed asynchronous machine with an output range of between 20 and 500 MVA, said machine comprising a rotor that rotates about an axis and is concentrically surrounded by a stator. The rotor and stator have a rotor sheet element and stator sheet element respectively, each made of laminated sheets that are pressed axially into a composite. Said elements are pressed using tension bolts (21) that are electrically insulated from the sheet elements and that run in an axial direction through the rotor sheet element and stator sheet element. In a method of this type, to achieve a simple and reliable monitoring of the insulation of the tension bolts, the insulation of said bolts is continuously measured electrically during the operation of the machine, a predetermined potential in relation to the associated sheet element being applied to each tension bolt (21) by means of a voltage source (24), and the flow of current through the voltage source (24) and/or through each tension bolt (21) is measured and evaluated.</p> |
