IEEE C57.163-2015 pdf free

IEEE C57.163-2015 pdf free.IEEE Guide for Establishing Power Transformer Capability while under Geomagnetic Disturbances.
This guide describes the effects of geomagnetic disturbances (GMD) on power transformers when there is the presence of geomagnetically induced current (GIC) in a power transformer. It establishes specification parameters and performance characteristics for power transformers to help minimiie the risk and impact when GIC is present in the power system. The intent is to provide a background that can help evaluate the effect of GIC on a power transformer design and its GIC capability. This includes the evaluation techniques to determine the performance characteristics while under the influence of GIC.
It does not include the effect of GIC’ on other power system devices beyond power transformers and accessories. It does not discuss mitigation techniques and mitigation devices such as neutral-blocking devices on equipment beyond power transformers and accessories.
The following referenced documents are indispensable for the application of this document (i.e., they must be understood and used, so each referenced document is cited in text and its relationship to this document is explained). For datcd rcfcrenccs, only the edition cited applies. For undated rcfcrcnccs. Lhc latcst cdition of the referenced document (including any amendments or corrigenda) applies.
IEEE Std C57.l2.0O’’, IEEE Standard for General Requirements for Liquid-Immersed Distribution. Power, and Regulating Transformers.
IEFE Std C57.l2.8OTM. IEEE Standard Terminology for Power and Distribution Transformers.
IEEE Std C57.9l’, IEEE Guide for Loading Mineral-Oil-Immersed Transtbrniers and Step-Voltage Regulators.
IEEE Std C57.l lOu’, IEEE Recommended Practice for Establishing Liquid-Filled and Dry-Type Power and Distribution Transformer Capability When Supplying Nonsinusoidal Load Currents.
IEC 60076-7. Power Transformcrs—Part 7: Loading Guide for Oil-Immersed Power Transformers.
For Ihc purposes of this document, the following terms and definitions apply. For other terms, the standard transformer terminology available in IEEE Std (‘57.1 2.XOTM shall apply. The IEEE SiandurLc Dictionary Online should be consulted for tenns not defined in this clause.
geocleciric field: The electric field within the earth. A geomagnetic disturbance of sufficiern intensity and duration changes the earth’s magnetic field thereby inducing atypical electric fields in the earth. The horizontal field near the surface of the earth, typically measured in V/km and characterized by the earth surface potentials, induces the flow of geomagnetically induced currents in power systems.
geomagnetic disturbance (C1NID): A disturbance of the magnetic field of the earth caused by the ejection of plasma from the sun, due to coronal mass ejections ((‘ME) and high speed solar wind streams, and its interaction with the earth’s magnetic field. The changing magnetic field induces voltages in the loops formed by transmission lines, grounded-wye transformers, and the paths through earth between the transformer neutrals. The changing magnetic field induces the changes in the geoelectric field and the earth and surface potentials. resulting in the flow of geomagnetically induced current (GIC).
quasi-dc potentials: The potentials existing in geoclectric field, characterized by relatively slowly time- varying values of same polarity. Quasi-dc potentials are also commonly referred to as earth surface potentials.
T-beam: A T-shaped beam used in shell form transformers. T-beams are typically made of non-magnetic steel and are located at the bottom and may also be at the top of the core, supporting the core passing through the coils and the winding assembly.IEEE C57.163 pdf download.