Explain the following terms in the distribution system 1) maximum demand, 2) coincident demand, 3) utilization factor and 4) single bus bar system
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Explain the following terms in the distribution system 1) maximum demand, 2) coincident demand, 3) utilization factor and 4) single bus bar system
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- Most buses in a typical power-flow program are a.voltage controlled bus b.PQ bus c.PV bus d.Slack bus 2-The power-flow problem is the computation of voltage magnitude and phase angle at each bus in a power system under balanced three-phase steady-state conditions. False True 3-The following sequence currents were recorded in a power system under a fault condition Ipositive=j1.5pu, Inegative=–j0pu, Izero=– j0pu. The fault is a.Three-phase b.Double Line to ground c.Line to ground d.Line to line 4- he following sequence currents were recorded in a power system under a fault condition Ipositive=j1.5pu, Inegative=j0pu, Izero=j0pu. The fault is a.Three-phase b.Double Line to ground c.Line to ground d.Line to line i uploded the houndots (book )here :https://seomidea.com/hct/nu.pdfDraw a radial distribution network feeder (11 kV), with 5 busbars/distribution substations, explain in what case there is a voltage rise problem: i) with the aid of a diagram showing load flow direction and voltage profile with simple calculations (ignore the power losses on the feeder); ii) list three possible solutions to reduce voltage rise issues, and explain using the voltage drop equation.Which of the following cannot be determined with the help of load flow analysis?a) frequency of busbar voltagesb) active and reactive forcesc) phase angle of busbar voltagesd) loss of strengthe) amplitude of busbar voltages
- The system values are given below. The bus 1 voltage after fault = 1.5 p.u The bus 2 voltage after fault = 1.2 p.u The line admittance between bus 1 and bus 2 (Y12 ) is = 0.8 p.u The post fault current current flow between bus 1 and 2 is ..............High capacity circuit breakers are needed in Ring bus bar system O Transfer bus bar system O Main bus bar system O Single bus bar systemFigure shows the one-line diagram of a simple three-bus power system with generation at buses 1 and 3. The voltage at bus 1 is V1 is 1.025 at an angle of 0◦ per unit. Voltage magnitude at bus 3 is fixed at 1.03 pu with a real power generation of 300 MW. A load consisting of 400 MW and 200 MVAr is taken from bus 2. Line impedances are marked in per unit on a 100 MVA base. (a) Construct Ybus matrix for the system in Figure (b) Using Gauss-Seidel method and initial estimate of V2(0) = 1.0 + j0 and V3(0) = 1.03 + j0 and keeping |V3| = 1.03 pu, determine the phasor values of V2 and V3. Perform two iterations.
- Explain the following terms in the distribution system 1) demand interval, 2) diversified demand, 3) demand factor and 4) single bus bar system.Bus bar system which ensures continuity of supply during breakdown is... single bus bar single bus bar without sectionalization single bus bar with sectionalization duplicate bus barElectrical Engineering Design a power system network consists of the following: į, 2 generators ii. 2 transformers iii. 2 transmission lines iv. Suitable number of busbars Then, for the designed network, perform the following: j. Load flow analysis. You must clearly identify the bus type to perform this. ii. Fault analysis – Balanced and unbalanced faults Next, perform manual calculations for the following: i, Load flow analysis using either Gauss Seidel or Newton Raphson Method. ii. Fault analysis (balanced and unbalanced faults) on any one fault point.
- Which of the following Busbar arrangement has the best reliability? a) Single Busbar arrangement b) Single Busbar arrangement with sectionalization c) Double Busbar arrangement d) Not of aboveA DC Optimal Power Flow problem is to be solved for a 3-bus network. The per-unit reactances of the lines interconnecting the buses are as follows: X12 = 0.25 pu, X13 = 0.15 pu and X23 = 0.2 pu. There is a generator at each bus. The loads at buses 1, 2 and 3 are 125 MW, 300 MW and 100 MW respectively. Bus 1 is taken as the reference bus, and SBase = 100 MVA. Which one of the below is NOT a constraint of the DCOPF problem? Select one: O a. -400 02 - 666.67 03 = P, - 125 O b. None of these C. -500 02 - 1166.67 03 = P3 - 100 d. 900 02 - 500 03 = P2 - 300a) Find the Y-bus power system in rectangular and polar coordinates.b) Specify the type of each bus, and the known/unknown values. c) What is the real and reactive power injections at buses 2 and 3?