Abstract: In modern power systems, high-precision power parameter measurement has occupied an important position for power quality in power grids. This paper presents a high-precision intelligent power parameter measurement device, which can collect parallel alternative current parameter values among 0 to 250 V in 3-channel easily and quickly, and improve the measurement accuracy by using the p...

The concept of phasor measurement and its application in power system monitoring and control are introduced in this paper. The example of application of PMU in a Campus Wide Area Monitoring System (WAMS) is then elaborated. With the availability of synchrophasor data measurement, it makes possible to establish the power system monitoring by directly employing spectral analysis of power or phase...

In this paper altitude measurement from water surface using laser beam is presented. Research data indicate that the reflection of infrared waves from water surface is about zero and it is less than 2% for visible radiations. Phase-shift and heterodyne technique was used for the measurement, and the laser beam ( mW p nm 10 , 700 = = l ) was modulated by a sine wave having a fixed frequency....

In this paper we present a simple analytical model to evaluate the impact of measurement errors on the closedloop power control for code division multiple access (CDMA) systems. By introducing a new performance measurement, the probability of false command in power control, PFC , a closed form formula for calculating PFC with consideration of measurement errors is presented. Furthermore, we dri...