Phần 7 KHÓA ĐÀO TẠO TÍNH TOÁN ỔN ĐỊNH VÀ ỨNG DỤNG TRÊN PHẦN MỀM PSSE CHO KỸ SƯ HỆ THỐNG ĐIỆN (Nguyên tắc mô phỏng Ổn định động và các thư viện mô hình mô phỏng trên Phần mềm PSSE)

NGUYÊN TẮC MÔ PHỎNG ỔN ĐỊNH ĐỘNG VÀ CÁC THƯ VIỆN MÔ HÌNH MÔ PHỎNG TRÊN PHẦN MỀM PSSE. NỘI DUNG CHÍNH PHẦN 7 (Dynamic Simulation Principles) tiếp Phần 4: 1. Classification of Variables. 2. Dynamic Simulation Sequence. 3. Overview of Simulation Procedure.

TRANSMISSION & DISTRIBUTION A Division of Global Power POWER SYSTEM STABILITY CALCULATION TRAINING D3 DiSiltiPiilPt2 D ay 3 - D ynam i c Si mu l a ti on P r i nc i p l es P ar t 2 July 8, 2013Prepared by: Mohamed El Chehaly eBook for You OUTLINE 2 OUTLINE • Classification of Variables • Dynamic Simulation Sequence • Overview of Simulation Procedure eBook for You 3 CLASSIFICATION OF VARIABLES VARIABLES eBook for You General Classification 4 CLASSIFICATION OF VARIABLES General Classification  Constants: Parameters that do not vary  State variables: Variables for which instantaneous values are determined by differential equations differential equations  Algebraic variables: Variables for which values can be determined if the values of all values can be determined if the values of all state variables, constants, and input variables are g iven g  Input variables: Quantities for which values are s p ecified at an y instant b y lo g ic outside pyyg the dynamic simulation eBook for You 5 CLASSIFICATION OF VARIABLES Exam p le of Power S y stem D y namic pyy Simulations eBook for You Exam p le of Power S y stem D y namic 6 CLASSIFICATION OF VARIABLES pyy Simulations  Differential equations: nem n DPP dt d H     2 n s ync dt d dt      Constants  Inertia: H dt  Damping: D  Synchronous speed: ω sync = 1 p.u. eBook for You Exam p le of Power S y stem D y namic 7 CLASSIFICATION OF VARIABLES pyy Simulations  Sequence of Calculation:  Sequence of Calculation: 1. Calculate V b     E 1 1 ' 2 Calculate I                     jXRjX jB jXR e jX E V b 1 ' 1 / ' ' 2 . Calculate I gen ' ' jX VE I b gen   3. Calculate P gen jX  cos' gengen I EP  eBook for You Exam p le of Power S y stem D y namic 8 CLASSIFICATION OF VARIABLES pyy Simulations  Sequence of Calculation:  Sequence of Calculation: 4. Calculate time derivatives  nem n HDPP dt d    2/ n dt d    eBook for You Dynamic Simulation Arrays 9 CLASSIFICATION OF VARIABLES Dynamic Simulation Arrays  Constants eBook for You Dynamic Simulation Arrays 10 CLASSIFICATION OF VARIABLES Dynamic Simulation Arrays  State Variables  Input Variables  Input Variables eBook for You [...]... documentation when activity DOCU is run in its report mode  6: Write model input data when activity DYDA is run  7 W it mode d 7: Write d documentation when activity DOCU t ti h ti it is run in its data checking mode  TPAUSE  Time at which simulation is stopped eBook for You  MODE 27 DYNAMIC SIMULATION SEQUENCE Dynamic Simulation Control Flags  0: Models are being called at a normal time step... 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 DYNAMIC SIMULATION SEQUENCE eBook for You 17 18 DYNAMIC SIMULATION SEQUENCE  Logic required to inform PSS®E of the differential equations is provided by two libraries of subroutines:  Handling models that involve state variables and differential . You Dynamic Simulation Basic Flow 19 DYNAMIC SIMULATION SEQUENCE Dynamic Simulation Basic Flow eBook for You Dynamic Simulation Basic Flow 20 DYNAMIC SIMULATION SEQUENCE Dynamic Simulation . You Dynamic Simulation Arrays 12 CLASSIFICATION OF VARIABLES Dynamic Simulation Arrays  Algebraic Variables eBook for You Dynamic Simulation Arrays 13 CLASSIFICATION OF VARIABLES Dynamic Simulation . derivatives  nem n HDPP dt d    2/ n dt d    eBook for You Dynamic Simulation Arrays 9 CLASSIFICATION OF VARIABLES Dynamic Simulation Arrays  Constants eBook for You Dynamic Simulation Arrays 10 CLASSIFICATION