tính toán ổn định cho 1 m dài của đê

... = E1 Y11sin 11 + E1 E '2 y12sin (12 - 12 ) = E1 Y11sin 11 = 1. 1922ì2.4ìsin34.3370 + 1. 192 1. 193 1. 124ìsin (12 9.4 410 ) = 1. 923 + 1. 598ìsin (12 9.4 410 ) ' P2III = E '2 Y22sin22 - E1 E '2 y12sin (12 ... (0. 016 + j 0. 013 ) = 1. 508 + j 0.938 = 1. 776 31. 8820 Sc in ng tng ng ca NMN1 l: * I N 1 = S F1 * U N 1 1.776- 31. 882 = 1. 658- 31. 768 = 1. 0 71- 0 .11 4 ' E1 = U N 1 + I N 1 ì jX F1 = 1. 0 710 .11 4 + 1. 658- ... 00 ; 12 = 900 - 12 = 900 c tớnh cụng sut ngn mch : '2 ' '2 P1II = E1 Y11sin 11 + E1 E '2 y12sin (12 - 12 ) = E1 Y11sin 11 = 1. 1922ì0 .12 4ìsin00 = ' P2II = E '2 Y22sin22 - E1 E '2 y12sin (12 + 12 ) =...

Ngày tải lên: 31/07/2014, 10:15

... 96 ,11 6 12 7,022 15 9,248 13 8,474 15 4, 910 10 7,568 11 1,057 14 3,459 6ữ8 8 10 33,054 10 12 35,307 12 14 37,5 61 17,349 14 16 37,5 61 19, 518 16 18 37,5 61 21, 687 18 ữ20 35,307 19 , 518 20ữ22 35,307 19 , 518 ... 13 6,407 13 6,407 13 6,047 13 6,407 15 1 ,16 3 10 2,930 ST(t) 16 7,442 16 7,442 14 8,837 14 8,837 16 7,442 16 7,442 18 6,047 16 7,442 16 7,442 14 8,837 14 8,837 SUF(t) 17 ,349 17 ,349 17 ,349 15 ,18 1 15 ,18 1 SVHT(t) ... 80 17 ,349 21, 687 19 , 518 20 16 18 10 0 21, 687 17 ,349 17 ,349 15 ,18 1 15 19 ,5 81 17,349 10 12 14 16 18 22 24 t(h) Hình 1- 3: Đồ thị phụ tải ngày đ m cấp điện áp m y phát Trần Việt Hng-HTĐ4-K45 Trang 10 ...

Ngày tải lên: 19/06/2015, 00:07

... Rated MVA = 200 MVA/Xd = 1. 5/Rated power factor = 0.9 / / R REAL POWER (MW) 220 200 18 0 16 0 14 0 12 0 10 0 80 60 40 20 00 -10 0 -75 -50 50 -25 RATED MW 25 50 75 REACTIVE POWER (MVAR) 10 0 00 12 5 15 0 50 17 5 eBook for You 18 0MW Generator/Fast-Acting ... RATED MW 25 50 75 REACTIVE POWER (MVAR) 10 0 12 5 15 0 17 5 eBook for You 18 0MW Generator/Slow-Acting Exciter 21 OPERATIONAL LIMITS FOR SYNCHRONOUS GENERATORS Case Study Rated MVA = 200 MVA/Xd = 1. 5/Rated power factor = 0.9 ... Fast‐acting Exciter: NL Margin (NLM) = 0.2 FL Margin (FLM) = 0 .1 Q 0.75 0.5 0.25 0 ‐0.25 Q = tanα * Pg ‐ (SCR‐NLM * cosθ) •tanα =tanβ‐NL M  [0.258] •cosβ = 1/ (1+ FLM) [0 909 β = 24 6⁰] = 1/ (1+ FLM)  [0.909, β...

Ngày tải lên: 20/08/2014, 10:08

... condition 13 LONG-TERM STABILITY IN PSS®E Maximum Excitation Limiters MAXEX1 I Inverse time characteristics of MAXEX1 ti h t i ti f 14 LONG-TERM STABILITY IN PSS®E Maximum Excitation Limiters MAXEX1 ... Di Block Diagram of MAXEX1 f 15 LONG-TERM STABILITY IN PSS®E Maximum Excitation Limiters MAXEX1  M d l MAXEX1 typical values Model t i l l 16 LONG-TERM STABILITY IN PSS®E Steam Turbine and Boiler ... voltage 11 LONG-TERM STABILITY IN PSS®E On-load On load Phase Shifter OLPS1  M d l OLPS1 typical values Model t i l l 12 LONG-TERM STABILITY IN PSS®E Maximum Excitation Limiters MAXEX1 D i Designed...

Ngày tải lên: 27/08/2014, 15:08

... Components & Load Flow Simulation eBook for You SYSTEM COMPONENTS The IEEE 19 96 Reliability Test System Two areas (230kV & 13 8kV) • 21 branches • 10 generators (implicit GSU transformers) • 20 loads ... measures to protect lines and other equipment from high overloads • What remedial action schemes would you implement for the safe operation of this system? eBook for You Remedial Action Schemes ... a fixed shunt capacitor of 75 MVAR at bus • To address the low voltage at buses 4, 5, 6, 8, 9, 10 , 11 and 14 , we placed a fixed shunt capacitor of 11 5 MVAR at bus 10 • Why did we placed the shunts...

Ngày tải lên: 16/08/2014, 09:57

... 0 .1 TF = 1. 0 SE[E1] = 33 0.33 SE[E2] = 0 .10 E1 = 3 .1 E2 = 2.3 KE = computed p VRMAX = 1. 0 VRMIN = -0.9 eBook for You  Sample data 46 EXCITER MODELS IN PSS®E DC Exciters  Differs from IEEET1 ... EXCITER MODELS IN PSS®E DC Exciters  EXDC2 and ESDC2A KA = 300 TA = 0. 01 TB = TC = TE = 1. 33 KF = 0 .1 TF = 0.675 SE[E1] = 279 0.279 SE[E2] = 0 .11 7 E1 = 05 3.05 E2 = 2.29 KE = 1. 0 VRMAX = 4.95 VRMIN ... VRMIN is set to - VRMAX eBook for You  Calc lation of VRMAX the normali ed Calculation normalized control source maximum output 23 TYPES OF EXCITERS Automatic Calculation of DC Exciter Parameters...

Ngày tải lên: 16/08/2014, 10:27

... Overall Flow Chart 19 DYNAMIC SIMULATION SEQUENCE eBook for You Dynamic Simulation Basic Flow 20 DYNAMIC SIMULATION SEQUENCE eBook for You Dynamic Simulation Basic Flow 21 DYNAMIC SIMULATION SEQUENCE ... Flags  0: Models are being called at a normal time step  1: Models are being called for the value of g simulation time equal to TPAUSE 2: Models are being called at a time step immediately ... excitation system is able to supply from its terminals (IEEE Std 4 21. 2 -19 90)  Ceiling field voltage determined mainly by the saturation characteristic of the exciter and by the maximum output (DC...

Ngày tải lên: 16/08/2014, 14:02

...  Model 26 GOVERNOR MODELS IN PSS®E Steam Turbine Models  TGOV2 eBook for You  Typical parameters: 27 GOVERNOR MODELS IN PSS®E Steam Turbine Models  IEEE recommended general model for steam ... parameters 32 GOVERNOR MODELS IN PSS®E Steam Turbine Models  Modification of IEEEG1 and PTI recommended model for fast valving studies  Same definitions used for IEEEG1 can be used  PRMAX has been added ... the maximum pressure in the reheat stage (generally 1. 1 ) 1 pu)  Same method can be used as TGOV2 for fast valving initiation g eBook for You  TGOV3 33 GOVERNOR MODELS IN PSS®E Steam Turbine Models...

Ngày tải lên: 16/08/2014, 14:11

... bus 2 01 39 DYNAMIC FILE Models Used for Dynamic File eBook for You  Exciter at bus 2 01 40 DYNAMIC FILE Models Used for Dynamic File eBook for You  Governor at bus 2 01 41 DYNAMIC FILE Models ... eBook for You  Dynamic models classified in categories DYNAMIC FILE Dynamics Model Raw Data File y Contents  BUSID: bus number or name DC line name or name, FACTS device name (in single quotes), ... excitation system 24 DYNAMIC FILE Governor Models  General model (IEEEG1)  Steam turbine (TGOV1)  H d turbine (HYGOV) Hydro t bi eBook for You  Gas turbine (GAST) 25 DYNAMIC FILE  IEEE recommended...

Ngày tải lên: 16/08/2014, 14:38

... Load/Maximum Generation Peak Load/Maximum Generation •Minimum Load/Minimum Generation •Maximum/Minimum Intertie Transfers •Intermediate Load‐Maximum Hydro I t di t L d M i H d •Intermediate Load‐Maximum Thermal ... a disadvantage makes QR impractical to use in high order systems such as large scale power systems  Up to 50 -10 0 machines maximum 50 10 0  Computer memory ~ n²  Computing time ~ n³ p g eBook ... linear dynamic system 14 SMALL-SIGNAL STABILITY Eigenvalue: mathematical term Mode: engineering term Complex eigenvalue s    j s  Real eigenvalue With  is called damping (in 1/ s)  is ll...

Ngày tải lên: 16/08/2014, 15:22

... Line DAKNONG2 – BINH LONG ( 916 12 – ( 55422)  3 31 MVA (54.2%)  N -1:  Second circuit of DAKNONG2 – BINH LONG ( 916 12 – 55422) is overloaded by 11 2% (2% more than permissible) eBook for You  N-0: ... voltages at PHU LAM but above limits 16 SCENARIO Special Protection Scheme  PLAM_T5 (bus 43678, load 43 MW)  PLAM T6 (bus 43688 load 42 MW) PLAM_T6 43688,  Trip auto-transformers at LONG AN ... line Three-phase NMDHTRHC 21 MYTHO C22 (50902 – 59052) after 10 0 ms  Single-Line-to-Ground fault following by a trip of line NMDHTRHC 21 MYTHO C22 (50902 – 59052) after 10 0 ms (successful and...

Ngày tải lên: 16/08/2014, 15:22

... 8, 9, 10 , 11 and 14 , another reactive compensation device will be needed • Place a fixed shunt capacitor of 11 5 MVAR at bus 10 • Once these changes have been made, run the load flow simulation ... for all machines 0. 015 pu 0 .12 5pu • These values are the step-up transformer impedance in pu on Mbase • Leave Gentap = 1, which is the transformer off-nominal turns ratio in pu on the system base ... grow more than level, but then the diagram becomes messy eBook for You • 17 CREATING AN SLD Single Line Diagram Re-order the system as shown to the right by • Rotating elements • Dragging elements...

Ngày tải lên: 16/08/2014, 15:22

... problem eBook for You • 24 DYNAMICS DATA VERIFICATION Initialization Errors Governors • Bus 15 Mbase= 17 5MVA • Pmax= Vmax*Mbase= 0.85 *17 5 =14 8.75 MW < Pinit (15 5MW) • Therefore, change Vmax to 1pu ... Bus 16 • Mbase= 448MVA • Pmax= Vmax*Mbase= 0.85*448=380.8 MW < Pinit (400MW) • Therefore, change Vmax to 1pu 25 DYNAMICS DATA VERIFICATION Initialization Errors Governors • Bus 18 Mbase= 448MVA ... 448MVA • Pmax= Vmax*Mbase= 0.85*448=380.8 MW < Pinit (400MW) • Therefore, change Vmax to 1pu eBook for You • • Bus 22 • Mbase= 775MVA • Pmax= Vmax*Mbase= 0.85*775=658.75 MW < Pinit (660MW) • Therefore,...

Ngày tải lên: 16/08/2014, 15:22

... OLTC1 eBook for You  M d l OLTC1 typical values Model t i l l 16 IEEE 24 – LONG TERM STABILITY Maximum Excitation Limiters MAXEX1 eBook for You  M d l MAXEX1 typical values Model t i l l 17 ... IEEEX1 IEEEX1 IEEEX1 IEEEX1 IEEEX1 IEEEX1 IEEEX1 IEEEX1 Change exciter gains for buses 1, 2, 7, and 22 Model Identifier [A 13 8.00] [A 13 8.00] 13 8 00] [A 13 8.00] 13 [A 230.00] 15 [A [ 230.00] ] 16 ... case with the lowest maximum transfer between the two areas using “Implement PV transfer Implement transfer” • Convert the case and prepare for dynamic simulation • Monitor machine angles and bus...

Ngày tải lên: 16/08/2014, 15:22

... assignment operators eBook for You a =10 and b=20 36 CONTROL FLOW TOOLS Operators  Python bitwise operators eBook for You a=60 and b =13 In binary format: a 0 011 a=0 011 11 00 and b=0000 11 01 b 0000 ... Hexadecimal: start with 0x or 0X eBook for You  Python supports four different numerical types 23 VARIABLES Numbers eBook for You  Examples  Complex numbers a = 2 .1+ 3 .14 j a.real = l 2 .1 a.Imag ... list1 [0] # Prints first element of the list abcd >>> print list1 [1: 3] # Prints elements starting from 2nd till 3rd [786, 2.23] >>>print list1 [2:] # Prints elements starting from 3rd element...

Ngày tải lên: 16/08/2014, 15:22

... satisfactory 35 DYNAMIC SIMULATION Dynamic Simulation Function  SNAP eBook for You  Save dynamics working memory into a Snapshot File (.snp) 36 DYNAMIC SIMULATION Dynamic Simulation Function ... state-space dynamic simulation 37 DYNAMIC SIMULATION Output Channel API  Specify on a subsystem basis the simulation variables to monitor during dynamic simulation runs  Monitor machine bus, load, ... DYNAMIC SIMULATION  Add a new dynamic model  Modify the CON, ICON, or VAR of an existing model  Ch Change the status or remove an existing th t t i ti model  Li t or remove from dynamic working...

Ngày tải lên: 16/08/2014, 15:23

... System eBook for You  Vietnamese Map 15 REDUCED POWER SYSTEM Vietnamese Power System  500 kV system External System Study System eBook for You Boundary bus 16 REDUCED POWER SYSTEM Vietnamese ... You Model Requirements 36 NON-STANDARD MODELS USING FORTRAN MODE  MODE = 1: The model must initialize all of its state variables and algebraic variables  MODE = 2: The model must make all computations ... SYSTEM Vietnamese Power System  The new values of the machine impedances with the new machine base (4000 MVA) are the following: Base: 4000 MVA B X  1. 0072 pu X  1. 010 0 pu X  1. 7556 pu eBook...

Ngày tải lên: 16/08/2014, 15:23

... 500kV transmission system t i i t eBook for You • THE VIETNAMESE POWER SYSTEM The Vietnamese Power System High voltage transmission at 500kV and 220kV • Medium voltage transmission at 11 0kV • Divided ... • 16 LOAD FLOW ANALYSIS Limit Checking Reports Verify if there are any voltage violations at the 11 0kV y y g level eBook for You • IEEE 24 – N -1 CONTINGENCY ANALYSIS eBook for You 17 18 N -1 CONTINGENCY ... Reports 33 N -1 CONTINGENCY ANALYSIS AC C ti Contingency A l i R Analysis Results lt Make sure that the non transformer % units non-transformer are in MVA (Misc, options menu) • How many contingencies...

Ngày tải lên: 16/08/2014, 15:23

... c1 Slide 11 If other ovelroads appear, it is because the sld file is set to flag loadings >90% cejaf, 2 013 /05 /15 eBook for You c1 EXAMPLE - DYNAMIC SIMULATION SETUP eBook for You 12 13 DYNAMIC ... eBook for You 16 DYNAMIC SIMULATION SETUP Factorize admittance matrix • Go to Power Flow menu Solution menu, eBook for You • Select: Factorize admittance matrix 17 DYNAMIC SIMULATION SETUP Solving ... system • Load flow analysis • Dynamic simulation setup • Running a dynamic simulation • Plotting dynamic simulation outputs • Simulation 1: Bus fault – All other elements in service • Simulation...

Ngày tải lên: 16/08/2014, 15:23

... Sequence Impedances • Analysis of Fault Conditions • R Representation of F lt t ti f Faults eBook for You • Symmetrical Components eBook for You SYMMETRICAL COMPONENTS SYMMETRICAL COMPONENTS SYMMETRICAL ... sets of Balanced or Symmetrical vectors RELATIONSHIPS BETWEEN PHASE VECTORS & SEQUENCE COMPONENTS A Positive  Sequence P iti S I A1 , IB1 = a2I A1 , IC1 = aI A1 I C = I C1 + I C + IC A Negative Sequence ... A = I1 + I2 + I0 IB = a2I1 + aI2 + I0 IC = aI1 + a2I2 + I0 eBook for You IB = IB1 + IB2 + IB0 B C I A = I A1 + I A + I A eBook for You SEQUENCE IMPEDANCES SEQUENCE IMPEDANCES SEQUENCE IMPEDANCES...

Ngày tải lên: 16/08/2014, 15:23