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KHÓA ĐÀO TẠO TÍNH TOÁN ỔN ĐỊNH VÀ HƯỚNG DẪN SỬ DỤNG PHẦN MỀM PSSE CHO KỸ SƯ HỆ THỐNG ĐIỆN (Kịch bản nghiên cứu theo tiêu chuẩn IEEE trên Phần mềm PSSE): • Saved Case Buildup. • Creating a Single Line Diagram. • Load Flow Analysis. • N1 Contingency Analysis. • ShortCircuit Analysis.
TRANSMISSION & DISTRIBUTION A Division of Global Power POWER SYSTEM STABILITY CALCULATION TRAINING Day 12 - Case Study – IEEE 24 Bus Test System Day 12 - Case Study – IEEE 24 Bus Test System PART 1 July 19, 2013Prepared by: Frida Ceja-Gomez eBook for You 2 OUTLINE • Saved Case Build-up Creating a Single Line Diagram • Creating a Single Line Diagram • Load Flow Anal y sis y • N-1 Contingency Analysis • Short-Circuit Analysis eBook for You 3 IEEE 24 – SAVED CASE IEEE 24 – SAVED CASE BUILD-UP eBook for You Building a SAV file 4 SAVED CASE BUILD-UP Building a . SAV file • The p ur p ose of this exercise is to build a test case from pp scratch on PSS®E and then perform all the types of analysis covered during Part A of this course • We will build a 24-bus power system based on the IEEE Reliability Test System 1996 T b i thi PSS®E t Fil N d • T o b eg i n thi s process, open PSS®E , go t o Fil e, N e w an d select Network Case eBook for You Building a SAV file 5 SAVED CASE BUILD-UP Building a . SAV file • Leave the MVA Base as 100 and the frequency as 60Hz • We will input the transformer ratings in MVA units For non transformer branches the current will be expressed as • For non - transformer branches the current will be expressed as MVA • The headin g lines are j ust to p rovide some information about gjp the new case eBook for You Bus Data 6 SAVED CASE BUILD-UP Bus Data • Use the followin g g bus data as an input • Note the meaning of each bus type code • 1 => PQ bus • 2 => PV bus • 2 => PV bus • 3 => Swing bus eBook for You Branch Data 7 SAVED CASE BUILD-UP Branch Data • The transmission line data for the IEEE 24-bus system can be found in the table below eBook for You Machine Data 8 SAVED CASE BUILD-UP Machine Data • Our test s y stem has 10 g enerators yg • Note that the machine at bus 13 will be the swing generator eBook for You GSU Transformer 9 SAVED CASE BUILD-UP GSU Transformer • We will not model the generator step-up transformers explicitly Enter RTran = 0 015pu and Xtran = 0 125pu for all machines • Enter RTran = 0 . 015pu and Xtran = 0 . 125pu for all machines • 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 • PSS®E assumes the GSU transformer has a delta - wye configuration as PSS®E assumes the GSU transformer has a delta wye configuration , as shown below eBook for You Load Data 10 SAVED CASE BUILD-UP Load Data • Add the followin g loads to their res p ective buses gp eBook for You [...]...11 SAVED CASE BUILD-UP Two-Winding Transformer The Th IEEE 24 test system h the five 230 138kV has h fi 230 -138kV transformers shown below • Note that these have a Y grounded configuration on both sides eBook for You • 12 SAVED CASE BUILD-UP Transformer OLTC We will add an on-load... Positions: 17 • Control Mode: Voltage • Auto-adjust: Yes • Vmax = 1.05 • Vmin = 1.00 eBook for You • 13 SAVED CASE BUILD-UP Fixed Shunt Data eBook for You • The system only has one fixed shunt capacitor IEEE 24 – CREATING A SINGLE 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... Right-click on g Bus 13 and select Grow N levels • Grow 1 level and re-order the elements as l t shown on this picture eBook for You • 20 CREATING AN SLD Single Line Diagram Similarly, g y, grow buses 23, 20, and 19 • The SLD should look like the one shown to the h t th right eBook for You • 21 CREATING AN SLD Single Line Diagram Now let us grow g Bus 9, then Buses 3 and 1, and finally Bus 8 • Remember... you can make the b th buses larger l so that the elements are not crowded eBook for You • 22 CREATING AN SLD Single Line Diagram • Then grow Buses 16 and 17 eBook for You • Now expand Buses 24 and 15 23 CREATING AN SLD Single Line g Diagram • Now that we have all the elements, reorganize them to optimize space eBook for You • Finally, grow Bus 22 one level 24 CREATING AN SLD • In the Diagram Primitives... the diagram eBook for You Inserting a summation label 27 CREATING AN SLD • This is how the complete single line diagram looks after adding the title, legend and summation label eBook for You Final SLD IEEE 24 – LOAD FLOW ANALYSIS eBook for You 28 29 LOAD FLOW ANALYSIS Running the load flow simulation Now that the saved case file and the single line diagram have been built, run the load flow analysis . TRAINING Day 12 - Case Study – IEEE 24 Bus Test System Day 12 - Case Study – IEEE 24 Bus Test System PART 1 July 19 , 2 013 Prepared by: Frida Ceja-Gomez eBook for You 2 OUTLINE • Saved Case. You Load Data 10 SAVED CASE BUILD-UP Load Data • Add the followin g loads to their res p ective buses gp eBook for You 11 SAVED CASE BUILD-UP Two-Winding Transformer Th IEEE 24 h h fi 230 13 8kV • Th e. side • Tapped: Yes Tapped: Yes • Tap Positions: 17 • Control Mode: Voltage • Auto-adjust: Yes • Vmax = 1. 05 • Vmin = 1. 00 eBook for You 13 SAVED CASE BUILD-UP Fixed Shunt Data • The system only