초록 ▼

Coupling unit for the operational monitoring of the high-voltage winding (SW) and the connected electric output lines in electric high-voltage machines and apparatus, particularly of three-phase stator windings in turbo-generators including their generator output lines (5.1, 5.2, 5.3) and/or in tran

Coupling unit for the operational monitoring of the high-voltage winding (SW) and the connected electric output lines in electric high-voltage machines and apparatus, particularly of three-phase stator windings in turbo-generators including their generator output lines (5.1, 5.2, 5.3) and/or in transformers and converters by means of determining partial discharges and measurement of the breaking spark in the high-frequency range, where the above-mentioned machines and apparatus are connected via generator output leads or other connecting line to each other and are connected to ground potential via network protection capacitors. The respective coupling unit (AE1, AE2, AE3) is coupled to one each of the three legs (5.1, 5.2, 5.3) of the generator output lead (5), and the network protection capacitor (C1, C2, C3) of each phase are connected to ground potential (B) via a measuring impedance. Furthermore, the shielded measuring lines (4.1, 4.2, 4.3) brought from the measuring voltage terminal of the measuring impedance to the partial discharge measuring device, are conducted through a filter.

대표청구항 ▼

A coupling unit for operational monitoring of high voltage windings and connected electric output leads in electric high-voltage machines and apparatus, said machines and apparatus having at least one phase lead, divided into high voltage cells each having a floor, including stator windings in turbo

A coupling unit for operational monitoring of high voltage windings and connected electric output leads in electric high-voltage machines and apparatus, said machines and apparatus having at least one phase lead, divided into high voltage cells each having a floor, including stator windings in turbo-generators, generator, transformer, and converter output leads; wherein said coupling unit monitors by means of determining partial discharges and breaking spark measurement, the above-mentioned phase lead is connected to ground potential via a respective network protection capacitor, the coupling unit is coupled selectively to the phase lead and said network protection capacitor is connected at one side to a respective phase lead and at the other side to a measuring voltage terminal; said coupling unit comprising at least one measuring impedance connected at one side to said measuring voltage terminal, and at the other side to ground potential; a partial discharge measuring device; at least one filter; and at least one shielded measuring line leading from the measuring voltage terminal through said filter to said measuring device.