What is PD IEC/TS 60076-23 – Power transformers about?
PD IEC/TS 60076-23 is an international standard that discusses DC magnetic bias suppression devices for Power transformers. Power transformers are generally used in transmission networks for stepping up or down the voltage level.
PD IEC/TS 60076-23 specifies requirements for devices for the suppression of DC magnetic bias of power transformers and convertor transformers. It includes requirements for service conditions, structures, testing, packing, transport and storage.
The devices are connected to neutral points of power transformers and converter transformers to suppress DC bias current in the case an HVDC system is operated in monopole ground return mode or bipolar unbalanced mode. In the case of a dedicated metallic return HVDC system, the devices are useful to mitigate DC stray current flowing through power transformers and converter transformers during transient conditions such as DC line fault.
PD IEC/TS 60076-23 applies to DC magnetic bias suppression devices for operation at frequencies of 50 Hz and 60 Hz on power systems having voltages above 110 kV.
Who is PD IEC/TS 60076-23 – Power transformers for?
PD IEC/TS 60076-23 on power transformers applies to:
- Electrical engineer
- Quality testing personnel
- Manufacturer of power transformers
Why should you use PD IEC/TS 60076-23 – Power transformers?
Power transformers are generally used in transmission networks for stepping up or down the voltage level. It operates mainly during high or peak loads and has maximum efficiency at or near full load. DC magnetic bias suppression device is an electric device connected between the transformer neutral point and the earth to limit or to block the DC bias current flowing through the transformer windings.
PD IEC/TS 60076-23 provides you with the DC flowing guidance through transformer windings which causes DC magnetic bias of the transformers, presenting a safety hazard for both the transformers and the power system.
PD IEC/TS 60076-23 navigates you through the two techniques which help you for suppressing the transformer DC bias current are presented in PD IEC/TS 60076-23, respectively to limit or block the transformer bias current produced by the HVDC transmission system.
PD IEC/TS 60076-23 defines the technical requirements for the two types of DC suppression devices that are connected to neutral points of power transformers and converter transformers. These provisions will let you conduct the tests efficiently.