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IEEE C37.118.1-2011 pdf free

IEEE C37.118.1-2011 pdf free.IEEE Standard for Synchrophasor Measurements for Power Systems.
IEEE C37.118.1 is for synchronized phasor measurement systems in power systems. It defines a synchronized phasor (synchrophasor), frequency, and rate of change of frequency (ROCOF) measurements. It describes time tag and synchronization requirements for measurement of all three of these quantities. It specifies methods for evaluating these measurements and requirements for compliance with the standard under both static and dynamic conditions, it defines a phasor measurement unit (PMU), which can be a stand-alone physical unit or a functional unit within another physical unit. This standard does not specify hardware, software, or a method for computing phasors, frequency, or ROCOF.
1.2 Purpose
This standard defines synchronized phasor and frequency measurements in substations along with methods and requirements for measurement verification. Measurements compliant with the standard and taken at various locations in the power system can be readily and accurately combined for power system analysis and operations. Time tag and other essential associations arc also described to facilitate communication and reliable data application. Communication and recording of phasor measurements arc covered in other standards, such as the companion standard IEEE Std C37.l l.2TM2Ol 1 [139].
This standard covcrs synchronized phasor measurements used in electric power systems. It defines the measurement, provides methods of quantifying the measurements, defines performance tests, and specifies acceptable limits. The following clauses are provided:
— Clause I provides the scope and needs for the standard.
Clause 2 references other standards that are related or may be useful in the study and application of this standard.
Clause 3 defines terms and abbreviations found in this standard.
— Clause 4 defines the measurement.
— Clause 5 defines measurement requirements, a method of quantifying the measurement, a test method, and accuracy limits.
Six informative annexes arc also provided to clarify the standard and give supporting information, as follows:
— Annex A is a bibliography.
— Annex B explores the effects of time tagging and transient response relevant to this measurement technique.
Annex C provides the algorithms that were used to confirm the performance requirements. Annex D discusses time synchronization.
Annex E explains the total vector error (TVE) concept of measurement quality and gives plots of error results.
— Annex F describes Iwo methods that can be used fbr measuring the internal voltages and power angles of generators.IEEE C37.118.1 pdf free download.

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