Method and device for controlling a steam power plant
A power station, steam technology, applied in the direction of steam engine installations, machines/engines, mechanical equipment, etc., can solve problems such as inadmissible load flow and frequency problems, power drop at generator terminals, inability to distinguish between power reduction and short circuit interruption, etc.
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[0025] exist figure 1 A circuit arrangement or a device 10 for controlling a steam power plant with a generator 12 and a turbine 14 , which is not further shown, is indicated in the center. As basic elements, the device 10 comprises a PEL signal line 16 and a PSW signal line 18 , which lead from the generator 12 to a device 20 for providing a first signal. The device 20 is designed as a control or control device, a total of six switching elements 20 a , 20 b , 20 c , 20 d , 20 e and 20 f being formed. In this case, the actual power (PEL) of the generator 12 is transmitted via the PEL signal line 16 to a circuit element 20 a which checks whether the actual power drops abruptly by a predetermined value GPLSP. In this case, in particular a reduction in the jump pattern of greater than 70% is currently being checked. In order to check such power jumps, the power signal PEL is first filtered through the DT1 link.
[0026] In the switching element 20b, it is deduced from the inpu...
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