... THI CễNG CễNG TRèNH VEN BIN + Tc di chuyn 1,7km/h Tớnh toỏn bc di chuyn ca cu v chiu di rỳt cỏp S tớnh toỏn ca bi toỏn ny c mụ t di õy: Trong ú: + X, Y: To di chuyn ca múc cu(m) + R (m): Bỏn ... lng hot ng 129T Chiu di: 15,14m Chiu rng: 6,365m Chiu cao trung bỡnh: 1,6m Tc quay toa : 1,9 vũng/phỳt Thụng s cn nõng: + Cn nõng : Chiu di c s 15m Chiu di ln nht 75m Chiu di cn ph 10m + Kh ... thi cụng bao gm tuyn ờ, tuyn phớa bc v tuyn phớa nam + Bc: chia lm ba on on NB1 di 130,7m on NB2 di 120m on NB3 di 150m Hỡnh Mt ng tuyn Bc Hỡnh Mt bng tuyn Bc NHểM 20 TRNG I HC XY DNG VIN XY...
... may appear in any order Text file can be used to write the DYR file eBook for You Notes regarding the writing of the DYR file: DYNAMIC FILE Dynamics Model Raw Data File y Contents Assigns storage ... calculation Format to be written in DYR file 19 DYNAMIC FILE Simplified model (SEXS) Type DC – Direct current commutater exciters (IEEEX1) Type AC – Alternator-supplied rectifier excitation...
... 2-2.a Tínhtoán tổn thất điện máy biến áp 2-3.a Tínhtoán dòng cỡng *B Phơng án II 2-1.b Chọn máy biến áp 2.1.1.b Phân bố công suất cho máy biến áp 2.1.2.b Kiểm tra tải cố máy biến áp 2-2.b Tínhtoán ... 2-3.b Tínhtoán dòng cỡng Chơng Tínhtoán ngắn mạch A Phơng án I Trần Việt Hng-HTĐ4-K45 Trang Trờng ĐHBK Hà Nội Đồ án tốt nghiệp 3-1.a Chọn điểm ngắn mạch 3-2.a Lập sơ đồ thay 3-3.a Tínhtoán ... Đồ án tốt nghiệp Chơng III Tínhtoán ngắn mạch A Phơng án I: Mục đích tínhtoán ngắt mạch để phục vụ cho việc chọn khí cụ điện (máy cắt) phần tử có dòng điện chạy qua (cáp, dây dẫn) theo điều kiện...
... 23) Fy L : Chiềudài cần kiểm tra (m) r: Bán kính quán tính tiết di n thanh(m) = I A I: Momen quán tính tiết di n (m4) A: Di n tích mặt cắt ngang tiết di n (m2) K: Hệ số chiềudàitính toán( phụ ... 3.3 tínhtoán liên kết khối chân đế sà lan trình vận chuyển biển 110 18 Hình 3.3 2- xử lý số liệu đầu vào: 3.2.1- tínhtoán thông số môi trờng: *Tính toánchiềudài sóng: Theo lý thuyết sóng , chiều ... 1,85m Zm = 0,52 tg = b /Tính toán lắc ngang: tínhtoán liên kết khối chân đế sà lan trình vận chuyển biển Z Zo Y g Yo Hình 11.3 *Tính toán hệ số - Momen quán tính khối lợng tàu tính theo công thức...
... determined for one typical loading condition Ke is a variable that depends on the initial condition value of Efd and h di i l f d hence on the h generator loading condition The value of VRMAX ... crucial role t l i l l during fast disturbances (first 10 seconds) Functions of an excitation system: To provide direct current to the synchronous generator field winding To perform control and ... Excitation power is supplied through transformers or auxiliary generator windings and rectifiers eBook for You Utilize a direct current generator with a commutator as the source of excitation system...
... stability y Models are not intended to be used in studies of the detailed behavior of individual plants Because of the wide variety of individual turbine controls, the principal effects of governors ... turbines Represented by radial-flow Francis turbines, axialflow Kaplan turbines with adjustable runner blades, axial-flow propeller turbines with fixed runner blades and diagonal flow Deriaz turbines ... 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...
... necessary to modify the transformers’ ratings as shown below • Note that the resistance/reactance values not need to be modified since these parameters were input with respect to the winding MVA base, ... Identify the main direction of the power flow on the SLD • Use the Limit Checking Reports to identify overloads or voltage issues eBook for You • LOAD FLOW ANALYSIS N-0 Criteria How did we resolve ... 20 loads • two-winding transformers with OLTC • fixed shunts eBook for You • LOAD FLOW ANALYSIS Running the load flow simulation Open the saved case file and the single line diagram • Run a power...
... time step immediately f ll i a pause (TPAUSE+) i di t l following SITER Solution for the electric network given the machine internal flux linkages and the load boundary conditions eBook for ... units are tested The initialization of the simulation at the pre-disturbance network operating condition i checked for model variables diti is h k d f d l i bl initialized outside of prescribed limits ... SPEED(I) = STATE(L) ANGLE(I) = STATE(L+1) G () S ( ) eBook for You Th PSS®E coding for the last example: The di f th l t l 16 CLASSIFICATION OF VARIABLES eBook for You Data Space Allocation...
... •Intermediate Load‐Maximum Hydro I t di t L d M i H d •Intermediate Load‐Maximum Thermal •Outage Conditions eBook for You Initial Conditions eBook for You TRANSMISSION & DISTRIBUTION A Division ... Modes of Different Frequencies/Damping are Mixed Evaluation of Results‐Difficult Frequency Reveals Rules behind System Domain Dynamics Non‐linearities not well represented No need to Apply Disturbances ... SMALL-SIGNAL STABILITY Trial-and-Error approach by applying Trial and Error disturbances and observing responses Different disturbances have to be applied For each load flow, new cases are required...
... TAN DINH (4100) Three-phase fault following by a trip of line DI LINH – TAN DINH (4020 – 4100) after 100 ms Single-Line-to-Ground fault following by a trip of line DI LINH – TAN DINH (4020 ... following by a trip of line DI Three-phase LINH – TAN DINH (4020 – 4100) after 100 ms Single-Line-to-Ground fault following by a trip of g g y p line DI LINH – TAN DINH (4020 – 4100) after 100 ... Scenario • Scenario eBook for You • Scenario SCENARIO 1: FAULTS AT DILINH & TAN DINH eBook for You SCENARIO eBook for You Slider Diagram SCENARIO Load Flow N-0: N-1: System collapse One...
... LINE DIAGRAM eBook for You 14 15 CREATING AN SLD Single Line Diagram Go to the File menu, click on New and select Diagram • Click on the Auto Draw option and then li k th click on the th diagram ... CREATING AN SLD • In the Diagram tool menu, use the Title and Lgnd buttons to add information to the diagram • Note that the font color and size can be b modified by difi d b right-clicking on ... in the Diagram g tool menu, the summation button allows us to add a label with different quantities • For example, we can add all the bus generation in the system and display it on the diagram...
... Faults • Dynamic Analysis of SLG Faults eBook for You • Building a Dynamic Data File IEEE 24 – BUILDING A DYNAMICS DATA FILE eBook for You BUILDING A DYNAMICS DATA FILE The Dynamics Data File This ... Machine eBook for You • BUILDING A DYNAMICS DATA FILE Generator Data Machine eBook for You • BUILDING A DYNAMICS DATA FILE Generator Data Machine eBook for You • BUILDING A DYNAMICS DATA FILE Generator ... eBook for You • 10 BUILDING A DYNAMICS DATA FILE Generator Data Machine eBook for You • 11 BUILDING A DYNAMICS DATA FILE Generator Data Machine eBook for You • 12 BUILDING A DYNAMICS DATA FILE...
... loss of each one of the transformers eBook for You PV Distribution Factor File Input PV ANALYSIS • Go the PV Analysis window and create the distribution factor file • Make sure to choose the right ... TERM STABILITY Underfrequency Load Shedding q y g Models (LDSH) eBook for You Typical data for LDSHAL 19 IEEE 24 – LONG TERM STABILITY Undervoltage Load Shedding Models g g (LVSH) eBook for You ... use the nonconverted saved case file • We will perform the QV analysis at Bus 11 • Use the same distribution factor file used in PV analysis eBook for You QV Analysis 12 QV ANALYSIS • How much...
... >>>print dict1.values() # Prints all the values ['sales', 6734, 'john'] >>> dict2 = {} >>> dict2[‘one’] = “This is one” >>> dict2[2] = “This is two” >>>print dict2[ one ] dict2[‘one’] >>>print dict2[2] ... >>> print dict1 # Prints complete dictionary {'dept': 'sales', 'code': 6734, 'name': 'john'} >>>print dict1[ name ] dict1[‘name’] # Prints value for ‘name’ key name john >>> print dict1.keys() ... Starting an identifier with a single leading underscore “_” indicates that the identifier is private Starting an identifier with two leading underscores “ ”indicates a strongly private identifier...
... dist_clear_fault: Clear a fault di t b dist_branch_trip: S t a line or a t h t i Set li two-winding i di transformer to out-of-service dist bus trip: Disconnect a bus dist_bus_trip: dist_3wind_trip: ... monitor individual quantities for one element titi f l t 40 DYNAMIC SIMULATION Disturbance API dist_branch_fault: Apply a fault at the IBUS end of line or a two-winding transformer dist bus ... transformer dist bus fault: Apply a fault at a bus dist_bus_fault: dist_3wind_fault: Apply a fault at the IBUS end of a three-winding transformer dist_scmu_fault: Calculate an unbalanced fault...
... on the boundary buses corresponding to the power flows of the tie lines that connect the boundary buses to the external system (DO NOT SOLVE) Disconnect th ti li Di t the tie lines th t connect ... t be modeled or given a bl k i t to b d l d i block diagram and/or the differential and algebraic equations Sufficient calculus and block diagram algebra background to transform the equation ... for You Indicates the type of simulation 40 NON-STANDARD MODELS USING FORTRAN MIDTRM, MIDTRM ITER and IFLAG MIDTRM indicates whether state-space or extended simulation ITER indicates the...
... and 220kV • Medium voltage transmission at 110kV • Divided in regions: • North • Central • South S th eBook for You • THE VIETNAMESE POWER SYSTEM • Generate a zone based report including all the ... vary with different prefault conditions? If so, why? • Now perform the short-circuit analysis for the 220kV b ses buses eBook for You • Are there any buses with a fault level exceeding the breaker ... Progress window Are there any problems? eBook for You • 11 LOAD FLOW ANALYSIS Single Line Diagram Does the diagram range checking flag any problems? g g g g yp eBook for You • 12 LOAD FLOW ANALYSIS...
... etc can be modified by right-clicking on the plot and selecting the parameter we want to change • Additionally, one can right click and select show editor From this window one can modify all the ... for additional cycles and click on Run eBook for You • 48 RUNNING A DYNAMIC SIMULATION Removing the disturbance We again follow the same procedure to remove the disturbance • Go back to the Disturbance ... transformer with a loading exceeding 100% Why i hi Wh is this overload present? l d ? eBook for You c1 Slide 11 If other ovelroads appear, it is because the sld file is set to flag loadings >90% cejaf,...
... X0H‐N N X0L‐N L X0T‐N T eBook for You ANALYSIS OF FAULT CONDITIONS ANALYSIS OF FAULT CONDITIONS 16 17 ANALYSIS OF SHORT-CIRCUIT CONDITIONS SHORT CIRCUIT Three Phase Fault VA = VB = VC = V (I1 ... CONNECTIONS H A A ZO B eBook for You B L Switches A&B initially OPEN For Grounded Wye Winding – CLOSE Switch A For Delta Winding – CLOSE Switch B 14 ZERO SEQUENCE TRANSFORMER CONNECTIONS L Grounded Wye/Delta ... ANALYSIS OF SHORT-CIRCUIT CONDITIONS SHORT CIRCUIT Three Phase Fault Three Phase Fault Z1 E F1 Z2 F2 Z0 F0 eBook for You E I1 = , I2 = , I0 = Z1 19 ANALYSIS OF SHORT-CIRCUIT CONDITIONS SHORT CIRCUIT...