IEEE 1277-2000 pdf download IEEE Standard General Requirements and Test Code for Dry-Type and Oil-Immersed Smoothing Reactors for DC Power Transmission
Standard transformer terminology available in IEEE Std C57.12.80-1978shall apply. Other electricalterms are defined in The IEEE Standard Dictionary of Electrical and Electronics Terms (B91.
3.1 smoothing reactor (SMR) for HVDC transmission: A smoothing reactor for HVDC application is areactor intended for connection in series with an HVDC converter, or an HVDC transmission line or inser-tion in the intermediate dc circuit of a back-to-back link, for the purpose of
Reducing harmonics in the de line.
Complying, in conjunction with dc filters, with the dc side telephone interference requirements.
Limiting the surge-current amplitude during faults and disturbances: especially the limitation ofcable discharge currents in the case of a long dc cable.
Providing a high impedance to the flow of harmonics in the case of a cable link (high capacitance ofcable).
Limiting the rate of rise of inverter dc current in the case of inverter ac network disturbances; thusreducing the risk of commutation failures.
Improving the dynamic stability of the dc transmission system (commutation failures).Smoothing reactors may be built using either of two designs: dry-type air cooled or oil-immersed. Dry-typesmoothing reactors are of air-core design. Oi-immersed smoothing reactors utilize magnetic-core materialsas an inherent part of their design.
3.2 incremental inductance: The incremental inductance of a smoothing reactor is the inductance of thesmoothing reactor, in Henries, determined on the basis of a small current increase (or decrease) at a predefined dc current. The incremental inductance is, therefore, defined as a function of dc current from theminimum current up to the maximum peak short-circuit current.
3.3 rated dc current: The rated dc current of a smoothing reactor is the maximum continuous dc current atrated conditions.
3.4 rated dc voltage: The rated dc voltage of a smoothing reactor is the maximum continuous dc voltage.
pole to ground,that will be experienced by the smoothing reactor.
3.5 ripple current: The total harmonic current content superimposed on the dc current. For specific engineering purposes, it is essential to define the harmonic spectrum of the ripple current in terms of amplitudeand frequency. For general purposes, the ripple current can be expressed as the root-mean-square (rms) valueof the harmonic current at any level of dc current; including the continuous rated dc current.
3.6 ambient temperature: The ambient temperature is the temperature of the cooling air surrounding asmoothing reactor.
IEEE 1277-2000 pdf download
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