Symmetrical components

Part 1 book "Power systems handbook short circuits in AC and DC systems" includes content: Design and analyses concepts of power systems, modern electrical power systems, wind and solar power generation and interconnections with utility, short circuit currents and symmetrical components, unsymmetrical fault calculations, matrix methods for network solutions.

279p dianmotminh03 17-06-2024 0 0   Download

Part 1 book "The electric power engineering handbook - Power systems" includes content: The per unit system, symmetrical components for power system analysis, power flow analysis, fault analysis in power systems, computational methods for electric power systems, characteristics of lightning strokes, overvoltages caused by direct lightning strokes, overvoltages caused by indirect lightning strokes, switching surges,... and other contents.

260p dianmotminh03 17-06-2024 1 0   Download

Part 2 book "Electric power transmission system engineering analysis and design" includes content: Limiting factors for extra high and ultrahigh voltage transmission - Corona, radio noise, and audible noise; symmetrical components and fault analysis; protective equipment and transmission system protection, transmission system reliability; construction of overhead lines, sag and tension analysis.

443p dianmotminh01 20-05-2024 2 1   Download

Part 1 book "Transformer design principles" includes content: Introduction; magnetism and related core issues; circuit model of a 2-winding transformer with core; reactance and leakage reactance calculations, phasors, 3-phase connections and symmetrical components; fault current analysis; phase shifting and zigzag transformers; multiterminal 3-phase transformer model; Rabins’ method for calculating leakage fields, inductances and forces in iron core transformers, including air core methods; mechanical design.

299p dianmotminh00 22-04-2024 4 3   Download

Part 2 book "A textbook of electrical technology (Vol 1 - Basic electrical engineering)" includes content: A.C. fundamentals, complex numbers, parallel A.C circuits, A.C network anaylsis, A.C bridges, A.C. filter networks, circle diagrams, polyphase circuits, harmonics, fourier series, transients, symmetrical components, introduction to electrical energy generation.

412p muasambanhan06 03-02-2024 3 2   Download

Lecture Power system stability - Lesson 6: Symmetrical Component Review, Stability overview provide students with knowledge about dallman after the accident; symmetric components; positive, negative and zero sequence sets; symmetrical component conversion; symmetrical components to decouple unbalanced networks;...

42p hanthienngao 15-04-2022 11 1   Download

The study is expected to reach the following objectives: To study how idioms are organized structurally and semantically in English and Vietnamese; to establish the similarities and differences between English and Vietnamese idioms in terms of structural and semantic components; to provide main factors lying behind the similarities and differences between English and Vietnamese idioms.

196p badbuddy09 05-04-2022 20 5   Download

Palynological characters of 20 taxa belonging to the Turkish subgenus Cyanus were studied in details using light and scanning electron microscopy. Pollen grains of the subgenus Cyanus were tricolporate or syncolporate, subprolate or prolate-spheroidal, 26.15 to 53 µm in polar size, 22.84 to 46.86 µm in equatorial size, isopolar, and radially symmetrical. The only type of pollen grain ornamentation observed was scabrate-perforate. Principal component analysis and cluster analysis were performed to investigate the relationships of the studied Cyanus taxa.

16p tudichquannguyet 29-11-2021 12 1   Download

In this paper, the mechanical behavior of symmetric FGM sandwich beams where each component layer is made from different funtionally graded materials and conected to one another by shear connectors is carried out. The finite element formulations are constructed based on the first-order shear deformation theory (FSDT) of Timoshenko for beam and finite element method. The calculation program is coded in the MATLAB environment and compared the results with particular cases.

11p cothumenhmong11 05-05-2021 17 1   Download

Let us introduce the issues involved in cryptography. First, we need to define some terms; then we give some taxonomies. Topics discussed in this section: Definitions, two Categories.

54p koxih_kothogmih5 01-09-2020 18 2   Download

A fast and facile one-pot procedure for the preparation of symmetric 5-Aryloyl-1,9-dimethyl-5,9-dihydro-2H-pyrano[2,3-d:6,5-d']dipyrimidine-2,4,6,8(1H,3H,7H)-tetraone derivatives by two-component reaction of N-methylbarbituric acid and arylglyoxalmonohydrates catalyzed by DABCO in ethanol at 50 ºC is described.

14p tocectocec 25-05-2020 8 0   Download

It is well known that neighbor discovery is a critical component of proactive routing protocols in wireless ad hoc networks. However there is no formal study on the performance of proposed neighbor discovery mechanisms. This paper provides a detailed model of key performance metrics of neighbor discovery algorithms, such as node degree and the distribution of the distance to symmetric neighbors. The model accounts for the dynamics of neighbor discovery as well as node density, mobility, radio and interference.

13p kethamoi1 20-11-2019 18 1   Download

In this paper, a new realization of the fractional capacitor (FC) using passive symmetric networks is proposed. A general analysis of the symmetric network that is independent of the internal impedance composition is introduced. Three different internal impedances are utilized in the network to realize the required response of the FC. These three cases are based on either a series RC circuit, integer Coleimpedance circuit, or both. The network size and the values of the passive elements are optimized using the minimax and least mth optimization techniques.

13p caygaocaolon1 13-11-2019 14 0   Download

(BQ) Continued part 1, part 2 of Analysis & design power system (Sixth edition) has contents: Symmetrical components, unsymmetrical faults, system protection, transient stability, power system controls, power distribution, transmission lines - transient operation. Invite you to refer this document.

468p thuongdanguyetan04 25-07-2019 29 3   Download

Pollen morphology of the 13 taxa of Scorzonera L. (Asteraceae) from Turkey was investigated by using light(LM) and scanning electron microscopy (SEM). As a result of LM and SEM observations, it was found that the pollen types are generally isopolar, radially symmetric, triangular in polar view, and lophate, with lophae ornamentations that are echinate-perforate and an exine thickness ranging from 6.99 to 11.82 μm.

18p vibasque27 27-03-2019 11 0   Download

Fourier transform infrared spectrometry (FTIR) showed the increase of band at 2855 cm-1 and 2965 cm-1 , assigned to symmetric and asymmetric of CH2, respectively, of SAM of AUT, indicating the more perpendicular orientation of AUT molecules compared with MUA molecules on the Au(111) surface. This result interpreted the degree of phase separation in binary SAMs of AUT-MeOH compared with binary SAMs of MUA-MeOH.

5p giesumanh 10-11-2018 22 0   Download

In this paper the other performance of this method is presented. and the convergence of the method is proven theoretically in .the general case of a harderung body which obeys the elastoplastic process theory. The more complicated 3D problem of bodies of revolution subjected to non-axially symmetric load is investigated.

16p chikychiky 26-10-2018 35 0   Download

We discuss the use of social networks in implementing viral marketing strategies. While influence maximization has been studied in this context (see Chapter 24 of [10]), we study revenue maximization, arguably, a more natural objective. In our model, a buyer’s decision to buy an item is influenced by the set of other buyers that own the item and the price at which the item is offered. We focus on algorithmic question of finding revenue maximizing marketing strategies. When the buyers are completely symmetric, we can find the optimal marketing strategy in polynomial time.

10p doiroimavanchuadc 06-02-2013 57 6   Download

Let X = G/K be a homogeneous Riemannian manifold where G is the identity component of its isometry group. A C ∞ function F on X is harmonic if it is annihilated by every element of DG (X), the algebra of all G-invariant differential operators without constant term. One of the most beautiful results in the harmonic analysis of symmetric spaces is the Helgason conjecture, which states that on a Riemannian symmetric space of noncompact type, a function is harmonic if and only if it is the Poisson integral of a hyperfunction over the Furstenberg boundary G/Po where...

59p tuanloccuoi 04-01-2013 52 7   Download