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- In your own words and from your own understanding, avoid plagiarism or copying from the Course Material, distinguish DIRECT BURIAL, TROUGH, and TUNNEL for UNDERGROUND POWER SYSTEMS.Which among these statements are false or incorrect? A. In the Duplicate Busbar System, continuity of service is possible even if the Main Busbar is undergoing maintenance, by switching the connections to the Spare Busbar. B. In the Ring Busbar System, there are the same number of circuits and breakers. C. When sectionalizing a Single Busbar, load is equally distributed to all sections. D. During maintenance, some lines being supplied by the Ring Busbar System will lose continuity of supply. Clear my choiceQ/The generating set lines L1 and L2 are connected to bus-bar A. L2 is supplied from a powerful system and L1 is supplying an important industrial plant. A fault is detected in CB1; preventing the circuit from opening, explain how the voltage at CB1 can be reduced to zero, so that repair can be carried out, without interrupting the supply to the important industrial plant.
- Draw clearly, neatly, and properly the Circuit Schematic Diagram for a SINGLE BUSBAR SYSTEM with BUS SECTIONALIZATION. Label your diagram.TOPIC: Transmission Lines, Power Systems, and Powerplants:INSTRUCTIONS:- Answer in this format: Given, Illustration, Required Conversion, Solution, Final Answer.- Step-by-step solution, do not skip even simple calculations to avoid confusion.- If answered in written form, make sure it is readable.PROBLEM:The per-unit values of positive, negative, and zero sequence reactances of a network at fault are 0.08, 0.07, and 0.05 respectively. Determine the per-unit fault current if the fault is line-to-line-to-ground. j10 j12 j14 j16Construct a complete electrical plan layout of a residential type building which includes floor plans, lighting layout, power layout and load schedule.
- 1-Draw the structure of single bus bar system. 2-Write the methods of Neutral Grounding.Please answer the question full sentence 5. Identify the minimum distance requirements between network cables and power sources and identify types and location for cable supports.A bolted line to line short circuit is used to determine the thermal withstand rating of the cables and the breaking capacity setting of a circuit breaker Select one: True False
- With the aim of a schematic, explain the principle of high impedance busbar protection. Answer in handwritten only for like and in short.Figure 3.39 shows a oneline diagram of a system in which the three-phase generator is rated 300 MVA, 20 kV with a subtransient reactance of 0.2 per unit and with its neutral grounded through a 0.4- reactor. The transmission line is 64km long with a cries reactance of 0.5-/km. The three-phase transformer T1 is rated 350MVA.230/20kV with a leakage reactance of 0.1 per unit. Transformer T2 is composed of three single-phase transformers, each rated 100 MVA, 127/13.2kV with a leakage reactance of 0.1 per unit. Two 13.2kV motors M1 and M2 with a subtransient reactance of 0.2 per unit for each motor represent the load. M1 has a rated input of 200 MVA with its neutral grounded through a 0.4- current-limiting reactor, M2 has a rated input of 100 MVA with its neutral not connected to ground. Neglect phase shifts associated with the transformers. Choose the generator rating as base in the generator circuit and draw the positive-sequence reactance diagram showing all reactances in per unit.Consider the single-Line diagram of a power system shown in Figure 3.42 with equipment ratings given: Generator G1: 50MVA,13.2kV,x=0.15p.u. Generator G2: 20MVA,13.8kV,x=0.15p.u. Three-phase -Y transformer T1: 80MVA,13.2/165YkV,X=0.1p.u. Three-phase Y- transformer T2: 40MVA,165Y/13.8kV,X=0.1p.u. Load: 40MVA,0.8PFlagging,operatingat150kV Choose a base of 100 MVA for the system and 132-kV base in the transmission-line circuit. Let the load be modeled as a parallel combination of resistance and inductance. Neglect transformer phase shifts. Draw a per-phase equivalent circuit of the system showing all impedances in per unit.