Vision of Standard C37.118 by PMU Developers
Comments on current С37.118-2005 standard. Definition of Synchrophasor and Elaboration of Requirements, Сompliance certification. Relationships for calculation of possible dynamics of phase derivatives and calculation of errors of their measurement.
Подобные документы
Replacement scheme for the calculation of short-circuit time search space for the simplest plot. Diagram of distribution line. Example of calculation for one moving line of AXO between section lines. Scheme of control process of finding places SC line.
статья, добавлен 23.05.2016Calculation of main electrical value and determination of isolation distances. Determination of the mass of the active part of the magnetic circuit, building materials and oil. Description of the design of transformers. Calculation of the HV winding.
дипломная работа, добавлен 06.12.2016Calculation of reliability as an object’s complex. The procedure of setting the appropriate indicators using methods based on their definition by reference data about the object elements’ and the analog objects’ reliability, data on material properties.
статья, добавлен 29.11.2016The classical electromagnetic lag. Use of the darwin-lagrangian analysis. Calculation of the aharonov-bohm phase shift. Experimental tests for velocity changes. The test for electromagnetic lag in the quantum topological description of the phase shift.
статья, добавлен 11.09.2012The analytical expression for the calculation of the relay mode frequency and power. Development of parameters of electric energy converters. The absence of the phase shift between voltage and current. Solution EMC problems. The reduction of power losses.
статья, добавлен 29.07.2016Analysis of the structure of the electromagnet. Features of the equivalent circuit of the electromagnet. Stages of the calculation of the magnetic flux and the electromagnetic force. Consideration of ways to determine the electromagnetic forces.
реферат, добавлен 04.09.2012The application of the methods of calculation of surface and volume losses in the constructional elements of transformers of ferromagnetic steel. A samples definition of heating in the constructional elements of equipment with the single-phase autotype.
статья, добавлен 26.02.2016Distance is used for interacting channel fragments in resonating group calculation of elastic scattering 3He(d, d)3He. Simple two level approximation of this dependence enables to obtain an essential improving of calculated differential cross sections.
статья, добавлен 02.09.2013Determination of wind speed in the building area using computational fluid dynamics. Analysis of wind flows on hiking trails. Calculation of the temperature depending on the strength of the wind and solutions to improve the comfort of the environment.
статья, добавлен 29.09.2021Mechanoactivation of plastic deformations and spatial accumulation of effects leads to nonequilibrium processes, changes in chemical bonds of carbon atoms. Raman spectroscopy is a non-destructive tool for characterizing crystalline carbon structures.
статья, добавлен 03.12.2018The benefits of using improved magnetic materials for electric devices. The mechanism of effect of magnetic field on the formation of ferrite particles in the polymer matrix composites. The calculation of the amount of filler in a phase transition.
статья, добавлен 30.07.2016The procedure of coordinating solutions for individual subsystems and does not require iterative calculations by subsystem. Setting the nodes with PMU as slack nodes of subsystems provides coordination of voltage phase angles in subsystem calculations.
статья, добавлен 23.06.2013Quantification of plastic strain by crystal orientation. Crystal orientation distribution and calculation of crystal deformation. Influence of the EBSD system. Relation with plastic strain. Misorientations from central orientation in each grain.
статья, добавлен 18.01.2014The measurement and analysis of the quality of electrical energy in electric grids. The characteristics of the main tools for measuring power quality, the requirements on the measurement of power quality. Instruments to measure the indicators of quality.
статья, добавлен 06.05.2018Investigation of the possibility of constructing relay protection in transient processes. Calculation of the single-phase short-circuit transient of the L-398 "Monchegorsk" line and the possibility of using an adaptive relay protection terminal.
статья, добавлен 30.04.2018Investigation of size effects in hydrogen-bonded crystals by numerical solution of the kinetic equation in finite differences, by finite difference method Calculation of the current density of thermally stimulated depolarization in finite differences.
реферат, добавлен 24.10.2014Actual trends in development of power system protection and automation. Identification of circuit parameters of power network elements. The proof of applicability of power line parameters identification algorithm. Synchrophasor application tasks.
статья, добавлен 23.06.2013Some problems with resulting of measurement result related to validity of measurement device are analyzed. The probability distribution of measured values and number of minimum required number of measurement has been obtained from mentioned analysis.
статья, добавлен 08.09.2020The study of five-phase voltage inverters, regulated in accordance with the modified synchronous pulse width modulation algorithms.The multiplication of five-phase conversion systems with continuous and intermittent varieties of synchronous modulation.
статья, добавлен 02.02.2019Phase transition for US gauge field is considered. A lower bound of the phase transition temperature by comparing of the average energy for the perturbative and nonperturbative regimes is estimated. In a scalar model of glueball its energy is calculated.
статья, добавлен 29.04.2017The study of nonlinear dynamics of neurophysiological systems identify the presence of chaotic elements. Complex characteristic based on microsystem technology Geomath. Correlation method of measurement and statistical significance of the results.
статья, добавлен 29.07.2016The problem of mass application of protection against single-phase earth faults. The main factors affecting the operation of earth fault protection. Zero sequence protection against higher harmonic currents. Limitations of devices with higher harmonics.
статья, добавлен 15.01.2021The different surface energies. Grain boundary prewetting and premelting phase transitions. Energy, segregation, mobility and diffusivity in the systems Cu–Bi, Al–Ga, Al–Pb, Fe–Si–Zn. Grain boundary phase transitions and the properties of polycrystals.
статья, добавлен 28.10.2018Relations are proposed that make it possible to estimate the influence of errors in the vector measurement on the accuracy of the matrix algorithm TRIAD. The connection between algebraic and geometric methods of error analysis has been achieved.
статья, добавлен 22.12.2016Setting relay protection operate areas and blockings, summarizing settings calculation algorithm. Concept subspace aggregate as real or complex signal. Unconventional approach to data conversion and overcoming opposition of а- and b-conditions.
статья, добавлен 08.05.2013