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1、matlab在电力系统分析中的应用1.doc（Application of MATLAB in power system analysis 1.doc）Shandong Electric Power(*) & ),* (0).-/-& ! # No.Period (general)ABS) period!2 (3. (4) applications in power system analysis#! $%& ( + *),+-.$/$0!,1+2#3456*#7$,) &56 6Peng Ganrong, Li Yue, Li Zhongcheng, Zhao Na, Zhang Xiaoj
2、ie5 Shandong Jinan power supply company, Shandong, Jinan$#!SixAbstract: introduce2 (3. (4 software) applications in power systems, as well as2 (3. (4 environment) dynamic simulation tools&789:7; =&45= A?&BCD84:EI9ECDFHGG:7EHD7; CJ(2 3. (47;G A?CBCD8H; H:BC7CKDF;DFJ9; ED7;H; IJHD9AJ&789:7; A?&BCD84:E
3、;23. (. 4M3F;8HJ2 (3. (4K)DF7CGHGAEHAA7C9DDF8I: 7; NH; IIB; H87EC789:HD7;JG A?CBCD8M3FGAHED7E7; I7EHDCDFHD(2 3. (47CHG? AJ9:?D:HGG:7IDDF8I: 7; NH; IC789:HD7;JG A?CBCD8M: #52+3; 69CBCD8H; H:BC7COC789:HD7;8I: OC789:HD7;CJD? HA?CLC number:32PQ1 document identifier:(article number:$ P - 11 %Five#!Six! -
4、 %1 #Simulation enables us to study the power system more deeplyAHDAB compositeLarge power networks would like to use the original hand method to generate power systems, the original intention is the matrix laboratory.2 (3.) (4 environment)5 or the languageThe analysis and calculation is impossible,
5、 and we must resort to the advanced language6 by the United StatesV:W2: Dr. A in$1X made by year research.Computer technology and powerful system simulation software are used to develop complex power work2 (3.) (4 of the original intention is to make it have a powerful matrixSystem analysis and calc
6、ulation, thus deepening our power system processing functions. Experts in modern control theory face highSolutions to further guide our work in power systems. The problem of dimensionality control; the desire for a more advanced language than at that timeNow, the available system simulation tools ar
7、e availableR23=, (= & &= more readable language, so2 (3. (4 Language) available,and2 (3. (4), etc. stay&=, (= & users need to fill through similar experts in the field of control theory is first concern. Similarly, the power systemThe way to write data is to design and define various system componen
8、ts and control systems. It is a relatively complex and high dimensional system,(2 3. (4Because of the lack of a good graphical input interface, the user will make it a powerful and effective tool for analyzing power system problems. plusWith easy to feel boring, and lose interest in learning, with e
9、xperts Quebec North Power Company G first made this work,also(= & &= through the user-defined method is not suitable for building algorithm2 (3.) (4 environment) developed(2 3. (4Y&789:7; : LUY= AL:ECD?5 power system analysis module6, andDifficulties. stayAlthough the R23= provides powerful electrom
10、agnetic transient calculation, the establishment of the power system related equipment libraryS! T.Function, but because of the lack of modules and algorithms, it is very good to open 2 (3. (4 Language) with matrix as the basic data unitTherefore, it is difficult to carry out the two development on
11、this basis. InFor powerful matrix computing, almost all commonly used matrix operations2 (3.) (4), the power system model can be&789:7; , such as adding, subtraction, multiplication, division, transposition, inversion, decomposition and operation of matricesDirect build, also can according to the ob
12、ject of study, physical model to establish its column, etc., all has the ready instruction.2 (3. (4) also has the order, the electionMathematical model, and encapsulate and customize the users own module, select, cycle, and other structural control statements, and with a large number of operatorsThe
13、 library fully shows the advantages of its simulation platform. At the same time, it is more important to write object-oriented features that conform to structured standardsYes,2 (3.) (4) provides rich toolbox resources, as well as large programs.2 (3.) (4 of the work environment, including commands
14、, controls, windows, procedures)Volume of practical modules in&789:7; not only can order editor, and so on, user can execute directly through command control windowThe simulation calculation of power system can also realize complex control method, line command, and also through establishment2 (3.) (
15、4 script file or function)%1Shandong Electric PowerThe #!Period (general)ABS) period!(*) & ),* (0).-/-&. The command in the file execution program.1 (2.) (3 systems mainly include the following five parts)Four!1 (2. (3 language)1 (2. (3 language) is a kind of include controlStream statements, functi
16、ons, data structures, inputs5 output and object orientedA high-level language for programming features; it uses matrices as its basic data sheetIt can quickly create small programs and complete simple operationsFor complex applications, write complete large applications.1 (2.) (3 working environment
17、)1 (2. (3 working environment Master)Include a series of variables, such as managing the workspace, and dataenter5 output,1 filesSix1 (2.) (3 of apps)7 generation,Debugging and interpreting tools.# handle graphics graphics handle is1 (2.) (3 graphics)The system includes both two-dimensional and thre
18、e-dimensional data visualization graphicsAdvanced commands for visual display of presentation and image processingGraphical display, creating a complete graphical user interface for your application(0-) command.$1 (2.) (3 Library of functions), the library collects huge amounts ofMathematical functi
19、ons and algorithms, from simple mathematical functions such as89:, ? = 8; and complex operation, such as inverse matrix, complex functionEigenvalue,3=88= function,AA2.%1 (2. (3 application program interface) (B-), it is oneAllow users to write and1 (2. (3 interactive)C andA+D2D+)Library of programs,
20、 including1 (2. (3) calls, programs, calls1 (2.) (3) as engine and read5 write1 (2 files).On the whole，1 (2. (3) is a numeric calculation software,It combines scientific computing, automatic control, signal processing, neural networks and graphsImage processing and other functions in one, with high
21、programming efficiency, program designFlexible, graphic features and so on. It has evolved into fit multiplePowerful software for a wide range of disciplines and platforms.Simulation tools#$% E,It is the most powerful, excellent and easiest to use in many simulation softwareUsed to model, simulate,
22、and analyze a dynamic system,It supports continuous, discrete-time, and linear mixtures of the twoThe linear system also supports multivariable, multirate systems.&: 9; the basic modules provided by =7, receive module library6&, E87, continuous system module library6C, G, F=GG=7, mathematical arithm
23、etic moduleBlock library61HGI+J=FHG; 87; signal routing module library6&; KHD, 9G; K7, port and subsystem module Libraries6B FG8?L&9M8N8G=: 87Wait。 As needed, the user can select the required modules from the module library#Block to form your own systemO also encapsulates its own modulesThe library
24、of its own module is used to realize the simulation analysis of the system.&: 9; E provides users with block diagrams for modelingModel interface, and its simulation software package with the traditional differential equation and differenceCompared with differential equation modeling, it has the adv
25、antages of more intuitive, convenient and flexible.The user only selects the modules with the mouse, and puts in the new moduleFinally, the modules are wired together to complete the particularCreation of system model. After defining the model, the user can pass&: 9; E menu; or1 (2. (3) command wind
26、ow type commandTo simulate.Simultaneous,D2P6D=H: = 2;P? FE8I? J?7 is OK&: 9; the E module providesC code generation function,So users canadopt&: 9; E establishes the system model and advances for different parametersDynamic simulation, through the constant adjustment of parameters, to find the syste
27、mThe best implementation model parameters at this point can be passedD2P module straightGenerate correspondingC language program, and this procedure is excellentTherefore, the system can be realized conveniently and rapidly by utilizing the functionMost of the work can be done&: 9; complete in E env
28、ironment,Finally, you just have to generate the optimizationsC code embedding system. From someIn degree,&: 9; E8=G hereinafter referred to asB&3) mainly from CanadaNSF?T9=M= and2UC&-1-G=FHG; H company co operating?It is very powerful and can be used in circuits, power electronicsThe simulation of t
29、he system, the motor system and the power transmission processModel modeling is done in a manner similar to circuit modeling, and will be done before simulationAutomatically change it into a state equation describing the system form, and then in the&: 9, simulation analysis under E.1 (2. (3 modeling
30、) can also be called directlyElectrical in B&3Modular。B&3 contains rich component models and almost provides the compositionAll components of a power system, including power systems, network components, and machinesElectrical equipment, power electronic devices, control and measurement links, and th
31、ree-phaseComponent library, signal display module connection module, etc.&: 9; found in E toolbox. meanwhileB&3 provides graphical usersInterface6B R=F?0-7, it allows the steady-state analysis of the circuit to be obtainedChange, and1 (2. (3)J? R=F! 8N8 function can make circuitThe simulation result
32、s are translated intoThe states represented by four matrices, 3, C, and *Calculation and analysis of simulation results are implemented in variable form.Shandong Electric Power(*) & ),* (0).-/-& ! # No.Period (general)ABS) period!This approach makes complex modeling problems extremely simple,The use
33、r only needs to find the corresponding electrical components in the model libraryThe input element parameters of the shape interface can be used to model the corresponding components;And then by dragging, pulling and other components of the required components can be completedSystem modeling, and th
34、en set a certain simulation parameters, you can carry out the systemSimulation analysis.Simulation exampleFor better illustration1 (2. (3) in power systemsYes, we do1 (2. (3) build oneTwo machine system, and through imitationReal analysis to study powerSystem stabilizer4&(45678&9:; 7;(AB78) and stat
35、ic reactive powerCompensator&CD (& = = EC=8D5F7G:=; 58) yesThe transient of the two machine systemInfluence of stabilityHIJKH%J.stay1 (2. (3)The architecture of the system, such aschartAs shown in $. Systematic tracingGenerator as follows1$For one$ 1LA hydraulic generatorPass oneM km,NC # transmissi
36、on levelThe line is connected to the loadThe heart # (the 1L electricResistive load) load byDistal$ 1LFactory and local# 1LAlternator1 at the same timeElectricity; transmission line transmissionO# 1L power connectionNear its natural power(&P8Q7AF7R=GE7.5=RGQ) OMM1L; forThe maintenance system is in f
37、aultAfter the stability of transmissionThe line is compensated in parallel at one point 1S=8:, static none. Power compensator&CD; the turbine governing system of the two generator is made up ofWater turbines and governors, excitation systems, and power system stabilizers threeA partial composition,
38、as shown in Fig.As shown.!# single-phase grounding fault (consideringThe influence of $%, do not vote%&) Simulation purpose: no static var compensator is put into this system(&CD) analyze and study the power system stabilizer (4&) for thisEffect of system stability. Simulation conditions: useT=PA;38
39、7=U78Module in;V W$: generates single-phase ground fault, and;V W!:chartWiring diagram of $two machine systemchartThe wiring diagram of the turbine governing system#$Shandong Electric PowerThe #!Period (general)ABS) period!(*) & ),* (0).-/-&. Time out trouble.Simulation results from rotor angular difference (67879): ? =9?=: A=) generator speed (&B=C)7?DEAF: =) and&23 nodeVoltage three aspects of comparative analysis, the results are as followsAs shown in G. No.One tr