All Questions All Questions › Category: ElectricalFilter:AllOpenResolvedClosedUnansweredSort byViewsAnswersVotesHow to reduce control system block in step by step?OpenChetu Shidling asked 11 hours ago • Control System7 views1 answers0 votesWhy to use BLDC motor in electric vehicle?OpenChetu S asked 2 days ago • Electric Vehicle8 views0 answers0 votesWhat is a PMSM motor?Openchetan shidling asked 6 days ago • Electrical Machines24 views1 answers0 votesSpecifications of Nissan leaf car?Answeredchetan shidling asked 5 days ago • Electric Vehicle9 views1 answers0 votesWhich motor we should use in electric vehicles?Answeredchetan shidling asked 5 days ago • Electric Vehicle8 views1 answers0 votesExplain two functions of potential transformer used in substation?AnsweredChetan Shidling asked 8 months ago • Switchgear And Protection353 views1 answers0 votesMATLAB code on formation of Ybus by the method of inspection?Answeredchetan shidling asked 1 week ago • Transmission And Distribution System12 views1 answers0 votesMATLAB code of formation of bus admittance matrix (Ybus) by singular transformation?Answeredchetan shidling asked 1 week ago • Transmission And Distribution System13 views1 answers0 votesMATLAB code on ABCD parameters in transmission line?Answeredchetan shidling asked 1 week ago • Transmission And Distribution System13 views1 answers0 votesWhat is a ABCD parameter in transmission line?Answeredchetan shidling asked 1 week ago • Transmission And Distribution System14 views1 answers0 votesWhich couse will be useful to learn autocadAnsweredPawani asked 1 week ago • Electrical14 views1 answers0 votesCseOpenanand diwate asked 2 weeks ago • Basic Electrical16 views0 answers0 votesSeminar topics for final year electrical engineers?AnsweredRushikesh hinge asked 2 weeks ago • Electrical14 views1 answers0 votesDeduce the dynamic model of a two-area power system. Hence deduce a general expression for steady-changes in frequency, generation and tie-line powers for a specified load demand changes.Openchetan shidling asked 2 weeks ago • Power System Analysis10 views0 answers0 votesIn the power system shown, the series line impedances are marked on the diagram and the charging admittances are negligible. Buses 1 and 2 are load buses with known real and reactive power injections as marked on the diagram. Bus 1 is slack with voltage (1.06+j0) pu. Determine the voltages at PQ buses at the end of first iteration using G-S method.Openchetan shidling asked 2 weeks ago • Power System Analysis14 views0 answers0 votesStating all the assumptions made, develop FDLF model and give the computational flow chart. Also list the salient features of FDLF.Openchetan shidling asked 2 weeks ago • Power System Analysis10 views0 answers0 votesWith usual notation, derive the Gauss and GS load flow models and give the flow diagram. Also explain how to handle PV bus in these methodsOpenchetan shidling asked 2 weeks ago • Power System Analysis13 views0 answers0 votesExplain the classification of buses for load flow studies giving the significance of each. With usual notation, deduce the pi equivalent model of a fixed off-nominal tap ratio transformer for load flow studiesOpenchetan shidling asked 2 weeks ago • Power System Analysis9 views0 answers0 votesWhat is meant by load flow? Briefly explain the properties required for a good load flow solution methodOpenchetan shidling asked 2 weeks ago • Power System Analysis11 views0 answers0 votesTwo power system areas A and B are interconnected and have the following characteristics: Area A: Regulation =4% rated capacity=400 MW, Area B: Regulation =6% rated capacity=500 MW Determine the steady-state frequency deviation, generation changes and tie-line power change following a increase of load demand by 50 MW in area B. Assume rated frequency as 50Hz. If another area C with Regulation =3% rated capacity=600 MW is also interconnected, determine the new values of steady-changes. Hence analyze the effect of interconnection operation on frequency changes following load disturbancesOpenchetan shidling asked 2 weeks ago • Power System Analysis11 views0 answers0 votesThree thermal generating units are operating in parallel at 50 Hz sharing 750 MW equally and have following rated capacity (Pr) and speed regulation (R) values. Unit 1: Pr=500MW, R=6%; Unit 2: Pr=600MW, R=2.4%; Unit 3: Pr=500Mw, R=4%. Analyze the following situations and comment on the results by comparing the operating frequency and load sharing between the units when supplying a total load demand of (i) 600MW (ii) 1000MW. Also determine the minimum total load demand and the corresponding operating frequency at which the entire load is supplied by only two units. Which unit will run idle under this condition? Assume free governor operation and rated frequency of 50 Hz.Openchetan shidling asked 2 weeks ago • Power System Analysis13 views0 answers0 votesDeduce the dynamic model of a two-area power system. Hence deduce a general expression for steady-changes in frequency, generation and tie-line powers for a specied load demand changes.Openchetan shidling asked 2 weeks ago • Power System Analysis8 views0 answers0 votesUsing the block diagram of the dynamic model of isolated power system, derive expressions for steady-state frequency deviation and change in generation for change in load demand assuming free-governor operationOpenchetan shidling asked 2 weeks ago • Power System Analysis11 views0 answers0 votesWith the help of a neat sketch, explain the operation of a speed governor of a turbine. Also give the block schematic of load frequency control model of an isolated areaOpenchetan shidling asked 2 weeks ago • Power System Analysis10 views0 answers0 votesTwo power system areas are interconnected and have following regulation (R) and rated power (Pr) values: Area1: R =5%, Pr =1000 MW and Area 2: R =6%, Pr =800 MW. Determine the steady changes in frequency, tie-line powers and generations when the load demand in area-2 increases by 100 MW. Also analyze the effect of connecting another area-3 (R =4%, Pr =500 MW) on the steady changes in frequency, generation and tie-line powers following the same load changes as above. Comment on the results obtained. Assume free governor operation and rated frequency of 50 Hz.Openchetan shidling asked 2 weeks ago • Power System Analysis10 views0 answers0 votesWhat is meant by load-flow? Briefly explain the desirable properties of a good load-flow model. With usual notation, deduce the π model of a fixed off-nominal tap ratio transformer for load flow studies.Openchetan shidling asked 2 weeks ago • Power System Analysis18 views0 answers0 votesThree thermal generating units are operating in parallel at 50 Hz sharing 600 MW load equally and have following rated capacity (Pr) and speed regulation (R) values: Unit-1: Pr=450 MW, R=5.4% Unit-2: Pr=400 MW, R=1.6%; Unit-3: Pr=500 MW,R=4%; Analyze the following new loading situations by comparing the operating frequency and load sharing when supplying a total load demand of (i) 400 MW (ii) 700 MW. Assume free governor operation and rated frequency of 50 Hz.Openchetan shidling asked 2 weeks ago • Power System Analysis8 views0 answers0 votesWith usual notation, deduce G-S load flow model for power systems with no PV buses and give the corresponding computational flow-chart. Also give salient features of G-S load flow model.Openchetan shidling asked 2 weeks ago • Power System Analysis7 views0 answers0 votesIn the power system shown, bus 1 is slack with (1.05+j0) pu voltage while buses 2 and 3 are load buses with known real and reactive power injections as indicated on the diagram. With (1+j0) pu initial voltage at load buses, determine its voltage at the end of first iteration using G-S load flow model. Per-unit series impedance (neglecting resistance) of lines is marked on the diagram and neglect line charging.Openchetan shidling asked 2 weeks ago • Power System Analysis6 views0 answers0 votesWith a neat sketch, briefly explain the turbine speed governing system and give the dynamic model of LFC for an isolated power system area. Hence deduce an expression for steady-state frequency deviation ΔfOpenchetan shidling asked 2 weeks ago • Power System Analysis6 views0 answers0 votesWhat is a tap changing transformer?Answeredchetan shidling asked 2 weeks ago • Power System Analysis14 views1 answers0 votesWhat are the properties for a good load flow solution?Answeredchetan shidling asked 2 weeks ago • Power System Analysis14 views1 answers0 votesWhat are the uses of load flow?Answeredchetan shidling asked 2 weeks ago • Power System Analysis11 views1 answers0 votesParameters we will get after load flow solution?Answeredchetan shidling asked 2 weeks ago • Power System Analysis11 views1 answers0 votesObjectives of load flow?Answeredchetan shidling asked 2 weeks ago • Power System Analysis10 views1 answers0 votesWhat is a load flow in power system?Answeredchetan shidling asked 2 weeks ago • Power System Analysis11 views1 answers0 votesWhat is a droop characteristics?Answeredchetan shidling asked 2 weeks ago • Power System Analysis20 views1 answers0 votesWhat are the objectives of LFC (Load Frequency Control)?Answeredchetan shidling asked 2 weeks ago • Power System Analysis10 views1 answers0 votesWhat is a interconnected system in power system?Answeredchetan shidling asked 2 weeks ago • Power System Analysis13 views1 answers0 votesDesign and development of Truncated Angle Variant (TAV) controller for multi-source-fed BLDC motor driveAnsweredchetan shidling asked 3 weeks ago • Electric Vehicle17 views1 answers0 votesWhat is a Truncated Angle Variant (TAV)?Answeredchetan shidling asked 3 weeks ago • Control System15 views1 answers0 votesWhat is a synchronous condenser in machines?Answeredchetan shidling asked 3 weeks ago • Electrical Machines19 views1 answers0 votesWhat is a YbusOpenchetan shidling asked 3 weeks ago • Power System Analysis16 views0 answers0 voteswhat is a Ybus?Openchetan shidling asked 3 weeks ago • Power System Analysis14 views0 answers0 votesIm getting output of two cells to be zero after simulation instead of balancing.AnsweredNikita asked 3 weeks ago • Battery Management System14 views1 answers0 votesTypes of buses in power system?AnsweredChetan Shidling asked 3 weeks ago • Power System Analysis17 views1 answers0 votesActive balancing system with flyback converterOpenNikita asked 3 weeks ago • Battery Management System12 views0 answers0 votesDifference between Zbus and Ybus in power system?Openchetan shidling asked 3 weeks ago • Power System Analysis12 views0 answers0 votesA lossless power system consists of three thermal plants with following fuel cost models (inRs/Hr): F1=0.01P12+40P1+1500;F2=0.0125P22+38P2+2000; F3=0.008P32+36P3+1000. Analyze the following situations and comment on the results by comparing the cost of received power and total fuel cost when supplying a total load demand of 1200 MW. (i) Optimal load dispatch assuming no generation constraints (ii) Optimal load dispatch with generation constraints 30≤P1≤550 MW; 10≤P2≤600 MW; 20≤P3≤575 MWOpenchetan shidling asked 3 weeks ago • Power System Analysis16 views0 answers0 votesDeduce expressions to develop the network model ZBUS using building algorithm for the addition of an uncoupled network element as a BRANCHOpenchetan shidling asked 3 weeks ago • Power System Analysis13 views0 answers0 votesDetermine ZBUS with node 0 as reference for the network shown using building algorithm. Add the elements in the sequence 0-1, 0-2, 1-2 and 2-3. Per-unit sequence impedance values are marked on the diagram and neglect mutual coupling.Openchetan shidling asked 3 weeks ago • Power System Analysis14 views0 answers0 votesDefine incremental fuel cost. Deduce the coordination equation for optimal load dispatch in a lossless system with k-thermal plants and hence arrive at a generalized formula for cost of received power (λ). Also explain the step by step procedure to handle inequality constraintsOpenchetan shidling asked 3 weeks ago • Power System Analysis12 views0 answers0 votesThe fuel cost models (in Rs/Hr) of the thermal plants of system shown are: F1=0.025P12+35P1+1500 and F2=0.03P22+34P2+2000. When certain load demand is optimally dispatched, it was found that the optimal generation of plant-1 is 216.115 MW and power loss is 23.3528 MW. Determine the optimal generation of plant 2, cost of received power, total load demand, total fuel cost and penalty factors. Also analyze the effect of not coordinating the transmission loss on total fuel cost and transmission loss when optimally dispatching the same total load demand found above and comment on the results.Openchetan shidling asked 3 weeks ago • Power System Analysis12 views0 answers0 votesWith usual notation, derive an expression for YBUS by singular transformation. The bus admittance matrix of a 3-Bus system with ground node as reference is given below. Assuming no mutual coupling, obtain the power system network indicating the self-impedance of elements.Openchetan shidling asked 3 weeks ago • Power System Analysis15 views0 answers0 votesWhy high frequency transformer is small in size?Answeredchetan shidling asked 3 weeks ago • Electrical Machines32 views1 answers0 votesApply Newton Raphson Algorithm to find the root up to 2nd iteration of the following equation f(x)=x3-6×2 +9x-4=0 ,use initial estimate of x(0) =6.Approximate the solution upto 4 decimal placesAnsweredchetan shidling asked 4 weeks ago • Power System Analysis16 views1 answers0 votesApply Gauss Siedal Algorithm to find the root up to 2nd iteration of the following equation f(x)=x3-6×2 +9x-4=0 ,use initial estimate of x(0) =2 .Approximate the solution upto 4 decimal placesAnsweredchetan shidling asked 4 weeks ago • Power System Analysis14 views1 answers0 votesWhat is a regenerative breaking?Answeredchetan shidling asked 4 weeks ago • Electrical Industrial Drives17 views1 answers0 votesTo solve power flow problem, three phase model of power system is considered?Answeredchetan shidling asked 1 month ago • Power System Analysis14 views1 answers0 votesFor which Bus, limits on the value of reactive power are specified?Answeredchetan shidling asked 1 month ago • Power System Analysis12 views1 answers0 votes