Device to detect the state of n power capacitors forming part of a high-voltage power capacitor bank

摘要

The invention relates to a device to detect the state of n power capacitors (C1, ..., Cn) of a high-voltage power capacitor bank (C). According to the invention, the device has n binary state detection devices (6), n resistors (R11, ..., R1n) and an electronic evaluation device (8) set at earth potential. Each binary state detection device (6) is connected on the entry side in series with a resistor (R11, ..., R1n) and connected on the output side with the electronic evaluation device (8) by means of an optical waveguide (F1). The n series connections are each connected in parallel to a power capacitor (C1, ... , Cn). These parallel connections in turn are connected in series in at least one branch (2, 4), so that defective power capacitors (C1, ... , Cn) can be selected from among a plurality of undamaged power capacitors (C1, ... , Cn) in a complex high-voltage power capacitor bank without cost-intensive measurements or evaluation algorithms requiring extensive calculations.