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Learn More About IR Measurement Methods. Currents Involved in a Megohm, DAR and PI Measurement; IR Measurement Considerations; ... Megohm measurements are tracked over time to help determine when a motor or …
At the beginning of PD online measurement in large generators, the time-domain methods were used to remove the noise in detected signal. Fr om aspects of statist ical and waveform analysis,
In such methods, rotor... | Find, read and cite all the research you need on ResearchGate ... Rotor angle estimation of synchronous generator from online measurement. …
All of the methods available are based on measurement of the relatively weak stray flux (rotor slot leakage flux) using flexible or non-flexible polymer encased stator wedge mounted probes [2 …
Many methods are available to measure the PD activity in operating machines. The electrical techniques all rely on monitoring the current or voltage pulse that is created whenever a partial …
System structure. The structure of the measurement system is shown in Fig. 1, which consists of two single-line lasers, a slide rail, a camera, and a computer.Laser 1 …
A line laser sensor (Gocator2520, LMI Technologies) was mounted on the spindle. The resolution along the laser line is 13 μm with a length of 25.0–32.5 mm, and the …
The light scattering method has a high signal-to-noise ratio, rapid response, no interference to the flow field, and it accounts for more than 90% of the measurement methods …
On-line partial discharge (PD) measurement in electrical insulation of the turbine generator (TG) is an essential approach to control the quality of insulation and to avoid any …
the proposed method in this paper. The concept of slow coherency is about identifying generator groups that tend to swing together and can therefore represent oscillatory behavior of …
The selected aerosol generator can disperse the powder particles to produce the sample aerosol. The particles in the storage chamber were carried through the chain into the …
measurement conditions recommended by the st andard, the accuracy of the measurement is better than +/-1.5 to 2.3% and it does not stay away from the accuracy of other basic methods …
Generator Power Measurement. The power output of the generator is calculated by a wattmeter with inputs of voltage and current measured at the secondary side of the PTs and CTs. PTs …
In this Frequency Measurement by Lissajous Method a standard frequency is applied to one set of deflection plates of the CRT tube while the unknown frequency (of approximately the same …
A generic, practical method for validating generator synchronous inductance is proposed and proven with actual field measurements and model validation study results using …
Three Wattmeter Method. Now we will explain the measurement three-phase power measurement using three wattmeter method. Three wattmeter method is used to measure power in 3 phase, 4-wire circuits. However, this method can …
Method A . Configure the scope to capture N+1 clock cycles on the screen. N is your definition of the number of clock cycles needed in the long-term jitter measurement. Set the scope to …
The specific contact resistances were measured with the linear transmission line method at both room temperature and at 773 K and yielded values > 5 x 10-6 -cm2 at both …
ogy methods have been developed, including watersheds, gray-level hit-or-miss transform, and connective filter, which have been involved in 3D vessel filtering and segmentation
interference in such machines, and methods of extracting partial discharge signals from the noise. The result of the work is development of new on-line partial discharge test methods for motors …
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