Instrument Transformers Detection and Calibration with Synchronized Phasor Measurements
نویسندگان
چکیده
منابع مشابه
Calibration of Instrument Current Transformers with Atypical Secondary Current
− Methods enabling a determination of errors εI and δI for a high transformation ratio difference between a standard and tested instrument current transformers (ICT) are described in this article. A widespread method uses an automatic transformer test set for the measurement of a difference between a standard and tested ICT. A method transforming secondary currents to voltages and an indirect m...
متن کاملSynchronized Phasor Measurements in a Dual Layer Hybrid State Estimator
Original scientific paper The architecture of the proposed Dual Layer Hybrid State Estimator starts with the linear state estimator that only takes synchrophasors as inputs and calculates states of the buses with the deployed Phasor Measurement Units (PMUs) and their adjacent buses. These states are used to obtain the pseudomeasurements that are processed together with conventional SCADA measur...
متن کاملRecent Advances and Applications of Synchronized Phasor Measurements in Power Systems
Present power systems operate in more and more difficult conditions generated by various physical and economic factors. Pushing the power system closer to its physical limits worsens the reliability and security of the general operating conditions. Hence, a better control across the entire grid, through more intensive online analysis is needed. At present, a common point of view considers that ...
متن کاملFerroresonance in Power and Instrument Transformers
This chapter describes the fundamental concepts of ferroresonance phenomenon and analyzes its symptoms and the consequences in transformers and power systems. Due to its nonlinear nature, the ferroresonance phenomenon can result in multiple oscillating modes which can be characterized based on the concepts of the nonlinear dynamic systems, e.g., Poincare map. Among numerous system configuration...
متن کاملDetection of Partial Discharges in Power Transformers using UHF PD Measurements and Acoustic Measurements
For examination and diagnostics of the insulation quality of high voltage devices the measurement of partial discharge (PD) is accomplished. The conventional PD measurement according to IEC60270 is in some situations not sensitive enough because of the high interference level in field. The development of an unconventional measuring method using electromagnetic probes is presented. These probes ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Physics: Conference Series
سال: 2021
ISSN: 1742-6588,1742-6596
DOI: 10.1088/1742-6596/1885/4/042052