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首页> 外文期刊>IEEE Transactions on Energy Conversion >Operational performance of generator condition monitors: comparison of heated and unheated ion chambers
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Operational performance of generator condition monitors: comparison of heated and unheated ion chambers

机译：发生器状态监测器的运行性能：已加热和未加热离子室的比较

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Generator condition monitors (GCMs) are evaluated under field conditions in a 550 MW turbogenerator. Small 100 W resistors coated with insulating paints and varnishes are mounted inside the generator to simulate overheating. The GCM responds very rapidly to an overheating event, typically within two minutes, even for hot spots as small as 10 cm/sup 2/. Similarly, the aerosols produced on overheating are extremely short-lived, decaying within two to three minutes after overheating is discontinued. Use of heated ion chambers is found to desensitize the GCM regardless of the nature of the overheated insulation and in some cases prevents the GCM from reaching the 50% preset alarm level commonly used on GCMs. Use of heated ion chambers is therefore generally not recommended except where severe oil mist problems may exist.
机译：在550 MW涡轮发电机的现场条件下评估发电机状态监控器（GCM）。发电机内部安装有涂有绝缘漆和清漆的100 W小型电阻器，以模拟过热。 GCM对过热事件的响应非常迅速，通常在两分钟之内，即使是对于10 cm / sup 2 /的热点也是如此。同样，过热产生的气溶胶寿命极短，在停止过热后的两到三分钟内会腐烂。无论是否使用了过热的绝缘材料，都发现使用加热的离子室会使GCM变得不敏感，并且在某些情况下，会阻止GCM达到GCM常用的50％预设警报级别。因此，通常不建议使用加热的离子室，除非可能存在严重的油雾问题。

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