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Ứng dụng Ổn định quá độ trên Phần mềm PSSE.NỘI DUNG CHÍNH PHẦN 12 (Application of transient Stability): • Introduction to the test system. • Load flow analysis. • Dynamic simulation setup. • Dynamic simulation setup. • Running a dynamic simulation. • Plotting dynamic simulation outputs.
TRANSMISSION & DISTRIBUTION A Division of Global Power POWER SYSTEM STABILITY CALCULATION TRAINING D5 A li ti f T i t St bilit D ay 5 - A pp li ca ti on o f T rans i en t St a bilit y July 10, 2013Prepared by: Frida Ceja-Gomez eBook for You OUTLINE 2 OUTLINE • Introduction to the test system • Load flow analysis • Dynamic simulation setup • Dynamic simulation setup • Running a dynamic simulation • Plotting dynamic simulation outputs • Simulation 1: Bus fault – All other elements in service • Simulation 2: Bus fault – Initial system with elements out of service • Simulation 3: Line fault – A ll elements in service eBook for You 3 EXAMPLE 1 - INTRODUCTION EXAMPLE 1 - INTRODUCTION TO THE TEST SYSTEM eBook for You Input files 4 INTRODUCTION TO THE TEST SYSTEM Input files Th fil i d t f t d ’ Th e fil es requ i re d t o per f orm t o d ay ’ s exercise are the following: • Day5_savnw.sav • Day5_savnw.sld D5 d • D ay 5 _savnw. d yr eBook for You Example 1 Single line diagram 5 INTRODUCTION TO THE TEST SYSTEM Example 1 – Single line diagram eBook for You Example 1 Test system information 6 INTRODUCTION TO THE TEST SYSTEM Example 1 – Test system information • 23 bus system • 23 bus system • System divided in 3 areas: • FLAPCO • LIGHTCO • WORLD • Voltage levels: 500kV, 230kV, 21.6kV, 20kV, 18kV, and 13.8kV • No motors present • No motors present • Generators, fixed shunts, passive loads, transformers and branches eBook for You Example 1 Test system area based report 7 INTRODUCTION TO THE TEST SYSTEM Example 1 – Test system area - based report • Go to the Power Flow menu, Reports, Area / owner / zone totals • Select Report on Areas, All areas, Loads/induction machines connected to area buses, and click on Go W th t t l ti l d ti ti l d • W e can see th e t o t a l genera ti on, l oa d , reac ti ve compensa ti on, l osses an d exports of each area eBook for You Example 1 Inter area flow report 8 INTRODUCTION TO THE TEST SYSTEM Example 1 – Inter - area flow report • Go to the Power Flow menu, Reports, Area / zone based reports • Select Inter area / zone flow, choose output for all areas and click on Go • We can see the total generation, load, reactive compensation, losses and tf h expor t s o f eac h area eBook for You 9 EXAMPLE 1 – LOAD FLOW EXAMPLE 1 – LOAD FLOW ANALYSIS eBook for You Example 1 – Load Flow Analysis 10 LOAD FLOW ANALYSIS Example 1 Load Flow Analysis Performing a quick load flow analysis will allow us to become familiar with the s y stem y • Open the saved case (.sav) and single line diagram (.sld) files • Solve for load flow and verify convergence at the output bar eBook for You [...]... 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, 2013/05/15 eBook for You c1 EXAMPLE 1 - DYNAMIC SIMULATION SETUP eBook for You 12 13 DYNAMIC SIMULATION SETUP Converting Loads and Generators Go to Power Flow menu 2 Select: Convert Loads and Generators 3 Convert Generators: Select Zsorce 4 Convert constant MVA l d 4 C t t t loads:... SETUP Opening the dynamics data file • Two options: • Add dynamics data file - The program adds the d t f thi d th data of this dynamics file to the already i fil t th l d existing data • So in this case, choose the dynamics data file option eBook for You • Dynamics data file – The program assumes it is the first dynamics file you open 20 DYNAMIC SIMULATION SETUP Opening the dynamics data file • The window... the fault on the plots • To do this, change the run time to 1s and click on Run eBook for You • 30 RUNNING A DYNAMIC SIMULATION Applying a disturbance Go to the Disturbance menu • Select bus fault and choose the bus at which the fault is applied • Note that a fault can also be applied on a line • Go to Dynamics, Simulation, Perform , Simulation • Change time to run for 5 more cycles and click on Run... OUTPUTS Bus fault - All other elements in service eBook for You 33 34 PLOTTING THE OUTPUTS Opening the output file Go to the File 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 will appear eBook for You • 35 PLOTTING THE OUTPUTS Viewing the recorded channels . TRANSMISSION & DISTRIBUTION A Division of Global Power POWER SYSTEM STABILITY CALCULATION TRAINING D5 A li ti f T i t St bilit D ay 5 - A pp li ca ti on. file • Our saved case file is now • Our saved case file is now ready to be used in transient stability simulations simulations • Make sure to save it with a different name ( under the. see th e t o t a l genera ti on, l oa d , reac ti ve compensa ti on, l osses an d exports of each area eBook for You Example 1 Inter area flow report 8 INTRODUCTION TO THE TEST SYSTEM Example