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... NGUYEN, Phuong-Duy NGUYEN (2013), Numerical calculation and confronting with movement monitoring data of contiguous 90 bored piles and ground anchors retaining system for a deep excavation, New ... NGUYEN, Phuong-Duy NGUYEN (2013), Numerical calculation and confronting with movement monitoring data of contiguous bored piles and ground anchors retaining system for a deep excavation, New Technologies ... Federal Highway Administration 17 http://www.secantpile.com/sites/secantpiles/techoverview.aspx 18 http://www.xaydungvietnam.vn/news/Cong-nghe-thi-cong-coc-barrette-vatuong-trong-dat/15415.ibuild TÀI...

Ngày tải lên: 08/08/2017, 15:46

... - xi măng đường kính 60 cm Thời gian khoan cho bồn có đường kính 34 m từ 45 - 60 ngày - Bước 1: Khoan: Cần khoan có bố trí lỗ phun mũi khoan, cho phép khoan đến độ sâu yêu cầu Thông thường, hỗn ... CHƯƠNG 2: CÔNG NGHỆ KHOAN PHỤT CAO ÁP GIA CỐ ĐẤT YẾU 2.1 MƠ TẢ CƠNG NGHỆ Cơng nghệ khoan cao áp (KPCA) thực khoan xoay vữa ximăng qua cần khoan mũi khoan đặc biệt Sau đưa mũi khoan đến cao độ thiết ... Hình 1-7: Ổn định mái đào neo 1.2.6 Ổn định mái đào băng thoát nc khoan vo mỏi Băng thoát n-ớc Hỡnh 1-7: n định mái đào băng thoát nước khoan vào mái 1.2.7 Ổn định mái đào biện pháp cải tạo mái...

Ngày tải lên: 27/05/2015, 10:58

... 2.2-3m 0-7 18.680 bề dày 2.2-3.0m lỗ khoan Giá trò SPT thay đổi từ 0-7 Lớp bụi dẻo màu xám xanh, xám 6.2 – đen, trạng thái chảy Bề dày 6.20-4 14.680 18.3m 18.3m lỗ khoan Bảng 1: Tổng hợp kết thí nghiệm ... hố đào tầng hầm gia cố cọc CDM đường kính D1000 dài 16m khoan giao vào (20cm) để ổn đònh thành hố đào tạo màng chống thấm ngăn không cho nước từ tràn vào hố đào Bảng ứng suất tới hạn theo thí ... Plaxis 8.2 ( Finite Element Code For Soil And Rock Analyses) HỒ SƠ KHẢO SÁT ĐỊA CHẤT (Chọn hố khoan 01 vò trí gần nhà cao tầng để tính toán) BẢNG TỔNG HP KẾT QUẢ THÍ NGHIỆM Lớp Mô tả Chiều dày...

Ngày tải lên: 11/09/2016, 20:34

... the distribution factor file • Note that one of the contingencies isolates a bus eBook for You • 16 N-1 CONTINGENCY ANALYSIS AC Contingency Solution Name the contingency solution output file ... N-1 CONTINGENCY ANALYSIS • Verify if the power flow solution converged for all contingencies eBook for You AC Contingency Solution 18 N-1 CONTINGENCY ANALYSIS • Go to Power Flow, Reports, AC Contingency ... AC contingency analysis eBook for You AC Contingency Analysis Report 19 N-1 CONTINGENCY ANALYSIS AC Contingency Analysis Results How many contingencies cause line overloads? • How many contingencies...

Ngày tải lên: 16/08/2014, 09:57

... is 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 ... Excitation Systems 11 TYPES OF EXCITERS DC Excitation Systems  Less dependent on voltage oscillations  Require a small transformer  Drawbacks  Very slow response time  Small amplification of control ... the CON containing Ke is zero or negative  g p When the CON containing Ke is positive  VRMIN is set to - VRMAX eBook for You  Calc lation of VRMAX the normali ed Calculation normalized control...

Ngày tải lên: 16/08/2014, 10:27

... boundary conditions eBook for You  KPAUSE 28 DYNAMIC SIMULATION SEQUENCE Dynamic Simulation Control Flags  0: Standard simulation  1: Excitation system response ratio test y p  2: Excitation system ... Initialization 30 DYNAMIC SIMULATION SEQUENCE eBook for You CONEC and CONET during g Initialization 31 DYNAMIC SIMULATION SEQUENCE eBook for You CONEC and CONET during RUN 32 DYNAMIC SIMULATION SEQUENCE ... special calculations in initialization of induction motor and dc transmission models eBook for You  MODE 25 DYNAMIC SIMULATION SEQUENCE Dynamic Simulation Control Flags  1: Initialization Calculate...

Ngày tải lên: 16/08/2014, 14:02

... rotor of a synchronous generator  Steam boilers convert the thermal energy from the combustion of fuels into steam  The focus will be on the steam turbine speed governor control eBook for You ... turbine-governor model  Gives a good representation of a reheat steam g p turbine  Gives an approximate representation of a hydro plant of simple configuration l t f i l fi ti eBook for You  IEESGO ... governor action and the reheater time constant effect  The ratio T2/T3 is the fraction of turbine power developed by the high pressure turbine high-pressure  T3 is the reheater time constant ...

Ngày tải lên: 16/08/2014, 14:11

... Data File y Contents Assigns storage locations for each model Places the constant parameters associated with p each model in the CON and/or ICON arrays Builds the model connection table arrays ... location of a dynamic equipment model (by bus, machine, load, dc line…)  Name of the model used  Th constant parameters of each model (CON The t t t f h d l and ICON) eBook for You  Description ... field-controlled rectifier excitation system 23 DYNAMIC FILE IEEE Type ST1 Excitation System yp y (EXST1) eBook for You  Potential source controlled rectifier rectifierexciter excitation system...

Ngày tải lên: 16/08/2014, 14:38

... Linearization of non-linear systems at a non linear specified operating point (steady-state load flow condition) )  Typical applications include inter area oscillations, sub synchronous torsional ... •Intermediate Load‐Maximum Thermal •Outage Conditions eBook for You Initial Conditions eBook for You TRANSMISSION & DISTRIBUTION A Division of Global Power POWER SYSTEM STABILITY CALCULATION TRAINING Day D 10 - A ... in Interconnections I i th hG th i I t ti Driven by Potential Cost Savings (Economies of Scale, Use of Lowest-cost Generating Units) Lowest cost Focus on Generation-Not on Transmission Disadvantages...

Ngày tải lên: 16/08/2014, 15:22

... DAK NONG 220 KV eBook for You 30 31 SCENARIO eBook for You Slider Diagram 32 SCENARIO Load Flow  Turn on all generators at DAK NONG and DAK NONG and re-dispatch other generators  Line DAKNONG2 ... 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 ms (with and without auto-reclose)  TAN DINH ... collapse  One of the most severe contingencies  Special p p protection scheme is employed p y eBook for You  Line PLEIKU – DI LINH (3300 – 4020)  835 MVA (46.8%) 11 SCENARIO Special Protection Scheme...

Ngày tải lên: 16/08/2014, 15:22

... the distribution factor file • Note that one of the contingencies isolates a bus eBook for You • 49 N-1 CONTINGENCY ANALYSIS AC Contingency Solution Name the contingency solution output file ... eBook for You • 50 N-1 CONTINGENCY ANALYSIS • Verify if the power flow solution converged for all ll contingencies eBook for You AC C ti Contingency S l ti Solution 51 N-1 CONTINGENCY ANALYSIS • ... two-winding transformers • The information for the OLTC of our two-winding transformers is shown below: • Controlled Bus: LV side • Tapped: Yes • Tap Positions: 17 • Control Mode: Voltage • Auto-adjust:...

Ngày tải lên: 16/08/2014, 15:22

... DATA VERIFICATION eBook for You 17 18 DYNAMICS DATA VERIFICATION Dynamics Data File Verification Prepare the IEEE 24 saved case file (the one satisfying N-0 reliability conditions) to use in ... 46 DYNAMICS DATA VERIFICATION Governor Response Test Do the speed deviations correspond to a typical droop? eBook for You • 47 DYNAMICS DATA VERIFICATION Governor Response Test Set Vmax = for the ... VERIFICATION Exciter Open Circuit Step Response Test Plot EFD • Are the overshoot, rise time and settling time adequate? eBook for You • 44 DYNAMICS DATA VERIFICATION Exciter Open Circuit Step Response...

Ngày tải lên: 16/08/2014, 15:22

... Implement transfer” • Convert the case and prepare for dynamic simulation • Monitor machine angles and bus voltages • Initialize • Run for second • Apply a bus fault on one side of the selected ... 24 – LONG TERM STABILITY Long-Term Long Term Frequency Stability     Machine angles Bus voltage Frequency deviation Pload  Initialize and run until t = seconds  Trip largest generation  ... eBook for You Long-Term Long Term Frequency Stability 24 IEEE 24 – LONG TERM STABILITY Long-Term Long Term Voltage Stability     Machine angles Bus voltage Frequency deviation Pload  Initialize...

Ngày tải lên: 16/08/2014, 15:22

... Python!” 10 BASIC SYNTAX Python Basic Syntax  Script mode programming eBook for You  Save as “Hello Python py” Python.py”  Run module 11 BASIC SYNTAX Python Identifiers  Variable  Function ... Name) C Convention f P th ti for Python 13 BASIC SYNTAX Python Identifiers eBook for You  Reserved words 14 BASIC SYNTAX  Blocks of code for class and function definitions or flow control denoted ... to use the line continuation character h t eBook for You  Statements in Python typically end with a new line  Continuation on next line allowed with “\” 16 BASIC SYNTAX  Python accepts single...

Ngày tải lên: 16/08/2014, 15:22

... Python functions export PSS®E data or solution results to Excel  Pssplot: Provides access to the PSS®Plot API eBook for You Modules for Python 13 PSS®E EXTENSION MODULES Modules for Python  ... integration with other applications and programming languages eBook for You  Python programs: INTRODUCTION eBook for You Recording an Automation File INTRODUCTION eBook for You Running an Automation ... this API to apply Newton-Raphson calculation 20 POWER FLOW OPERATION FDNS eBook for You Use this API to apply fixed-slope NewtonRaphson calculation 21 POWER FLOW OPERATION DSCN eBook for You...

Ngày tải lên: 16/08/2014, 15:23

... are: 46 NON-STANDARD MODELS USING FORTRAN Simple Excitation System eBook for You  Consider the following simple excitation system DEMOEX 47 NON-STANDARD MODELS USING FORTRAN Simple Excitation System ... You  The first transfer function block involves one state variable Esensed 48 NON-STANDARD MODELS USING FORTRAN  The second transfer function block involves one state variable E STATE (K+1) ... checking mode and most perform constant data checks and exceptions must be reported  MODE = 8: The model is being called to return description of each CON and ICON data used by the model eBook...

Ngày tải lên: 16/08/2014, 15:23

... South region eBook for You • • How is this region different from the North region? THE VIETNAMESE POWER SYSTEM Region Totals - Central Generate a zone based report including all the zones belonging ... AC Contingency reports to generate a report of the nonconverged cases eBook for You AC Contingency Analysis Reports 26 N-1 CONTINGENCY ANALYSIS AC Contingency Analysis Reports How many contingencies ... power, which indicates that the non-convergence is caused by a voltage problem eBook for You • 31 N-1 CONTINGENCY ANALYSIS Contingencies causing non convergence non-convergence This problem can be...

Ngày tải lên: 16/08/2014, 15:23

... SIMULATION SETUP eBook for You 12 13 DYNAMIC SIMULATION SETUP Converting Loads and Generators Go to Power Flow menu Select: Convert Loads and Generators Convert Generators: Select Zsorce Convert constant ... menu, click on Open and from the drop-down list on the bottom right corner choose to look for out files • Open the output file we created on the previous section and a screen like the one shown below ... • 44 RUNNING A DYNAMIC SIMULATION Initializing the dynamic simulation On the Dynamics y menu, go to Simulation and select Perform Simulation • Press on the … button to select or create the output...

Ngày tải lên: 16/08/2014, 15:23

... 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 ... 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 SEQUENCE COMPONENTS A ... 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 + I2 + I0 ) + ( a2I1...

Ngày tải lên: 16/08/2014, 15:23

... plots Open the plots, they should look like the one shown below eBook for You • QUESTIONS? eBook for You 42 WE CARE about the health and safety of our employees, of those who work under our care, ... Applying a function to the output Go to the Edit menu and select FUNC (choosing a plotting function) • Select User Defined Arithmetic Function and click OK • Enter the arithmetic expression • In this ... should be generated: eBook for You • 25 RECORDING AN IDEV FILE Closing the IDEV file To stop recording commands to the IDEV file, go to the IO Control menu and click on ECHO,OFF (Turn off ECHO)...

Ngày tải lên: 16/08/2014, 15:23