Improvement of Transients’ Parameters Evaluation Algorithms for Relay Protection and Automation with Use of Modern Methods of Digital Signal Processing
Transients in electrical power systems, short-time Fourier transform, wavelet transform, complex wavelets, wave spectrum, scalogram, frequency evaluation, phases and amplitudes of sinusoidal oscillations, evaluation accuracy and processing time.
Подобные документы
Algorithms for flat fading radio channel estimation was investigated. Namely algorithms based on AR-model with sliding window and without sliding window, algorithm that uses Discrete Wavelet Transform and that uses Discrete Wavelet Packet Transform.
статья, добавлен 04.11.2018Analysis of progress of complexes of local emergency control automation. Hardware and software of modern complexes of ECA. Algorithms of emergency control automation. Digital input/output data used in systems of relay protected and ECA of power industry.
статья, добавлен 23.06.2013Review the basics of electrical engineering. Characteristics of methods for determining the properties of the electrical systems and fluctuations of the electromagnetic wave. Theoretical information in conjunction with the examples of solving problems.
лекция, добавлен 11.10.2014Setting 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 08.05.2013Approach to signals and systems on the base of relativistic time dilation. Presentation of relativistic time dilation in frequency area. Relativistic generalization of Nyquist-Shannon theorem. Calculation of the Lorentz factor versus relative velocity.
статья, добавлен 27.04.2019The control signals for the frequency-phase matrix converter. The output control signal converters, on the basis of the expansion of space with the space. Methods of using the double Fourier series expansion of space and time independent variable.
статья, добавлен 22.03.2016The 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 06.05.2018The concept and characteristics of the electric current. Analysis of linear DC circuits. Applying Kirchhoff's in electrical engineering. The nodal equations for complex amplitudes. Representation of harmonic oscillations with the help of complex numbers.
методичка, добавлен 11.10.2014Actual 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 23.06.2013Principles of construction of a monitoring system. Appearance of the reflectometer ALIMP. Application of the complex modulated signals. Algorithms of processing of the information. Block scheme of power lines monitoring on the basis of the devices ALIMP.
статья, добавлен 08.05.2013Investigation 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 30.04.2018Breaker protection and control architecture. Modern microprocessor-based relay protection and automation devices. Notion of intelligent electronic devices. Advanced breaker protection and control diagnostic. Blocking functions in breaker protection.
статья, добавлен 08.05.2013Methods of construction of the automated test systems of radio-electronic technique objects. The basic directions of improvement of existing test systems. Principles and methods of reception and processing of the diagnostic information for AA SD RET.
статья, добавлен 22.12.2016Analys and discus an influence of 3D waveguide's scattering on characteristics of the integrated optical devices. Attenuation in optical waveguides, threshold-pumping power for thin-film dye lasers, dynamic range of integrated optical spectrum analyzer.
статья, добавлен 07.11.2018Presents methods for evaluation and improvement of output quality of an autonomous power supply system. Characteristic of the output impedance of a switching voltage regulator. Research and analysis features of the process setup for measuring impedance.
статья, добавлен 24.05.2018Synchronized measurements (the registrations of the transients) of the regime parameters, including vectors of the voltage in the network nodes, creating the technical possibility of realization of the technologies for checking of regime admissibility.
статья, добавлен 23.06.2013The 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 29.07.2016- 18. Simultaneous determine of Doppler shift and group delay time using amplitude modulated chirp-signal
Differential Doppler shift between rays as one of the main parameter of radio channel. The method of calculation of the transmitter radiate continuous amplitude-modulated continuous wave. Analysis of the spectrums of differential signal elements.
статья, добавлен 30.10.2016 The two dimensional magnetic micropolar generalized thermoelastic medium, in the presence of the effect of Hall currents. Laplace and exponential Fourier transform techniques are employed to transform the governing partial differential equations to ODE.
статья, добавлен 22.03.2016The energy industry is energy, which includes generation, transmission and distribution of electricity. Thermal power plant is a power plant producing electrical energy by converting chemical energy. Nuclear power plant is a complex of necessary systems.
статья, добавлен 19.02.2019Issues of scientific justification of electromagnetic compatibility assurance links, reliability theory and resources in the creation and operation of electrical complexes in electric power networks and systems. The increase in resource of electrical.
статья, добавлен 28.01.2020General characteristics of the main types of relay protection. Analysis of the causes of accidents that can damage technical equipment or lead to the death of service personnel. Acquaintance with the features of the formation of relay protection.
статья, добавлен 15.01.2021Physical and mechanical characteristics of the barometric sensor. Rules for designing the oscillating circuit a frequency-dependent device. Criterion of reliability of stable resonator systems. The effects of physical degradation of the air signal.
статья, добавлен 22.12.2016The practice of processing natural gas to pipeline dry gas quality levels. Oil and condensate removal. The actual process used to separate oil from natural gas. Natural gas processing. An example of absorption dehydration is known as Glycol Dehydration.
статья, добавлен 10.03.2019An analysis of the methodology for identifying the modal parameters of a dynamic system of structures using the Kalman filter, which is a powerful tool of modern control theory. Evaluation of the effectiveness of the method for identifying the structure.
статья, добавлен 24.07.2018