电力系统继电保护课程设计相关

1、machine initialized forp=1500 mwvt-13.»vblock parameters: vsthree-phase source (mask) (link)three-phase voltage source in series with rl branch.parame ter£phase-to-phasg rms woltage (v)：10e3phase angle of phase a (degrees):0frequency (hz):50iivternal connection： ygspecify impedance using s

2、hortcircuit levelsource resistancg (ohms):0?8929source induetanc© (h)：16.58e-3okcancelhelpblock parameters： distributed parameters linedistributed parameters line (mask)implement$ a n-phases distributed parameter line model. the fll, and c line parameters are specified by nxn matrices.t o model

3、 a two-, three-, or a six-phase symetrical line you can either specify complete nxn matrices or simply enter sequenee parameters vectors: the positive and zero sequence parameters for a two-phase or three-phase transposed line, plus the mutual zero-sequenee for a six-phase tansposed line (2 coupled

4、3-phase lines).parametersnumber of phases npfrequency used for r l c specification (hz)60resistance per unit length (ohms/km) nxn matrix or r1 ro rom i 0.01273 0.3864inductance per unit length (h/km) nxn matrix or l1 l0 lom|0.9337e-3 4.1264e-3capacitance per unit length (f/km) n*n matrix or c1 co co

5、m |12.74e-9 7751 e-9line length (km)ioomeasurements i nonecancelhelp |applyblock parameters: three-phase faultthree-phase fault (mask) qink)use this block to program a £ault (shortcircuit) batween any phase and the ground. you can define the £ault timing directly from thw dialog box or app

6、ly an ©xternal logical signal. i£ you check thw 'extrnal contro/ box 丿 thw external control input will appear.parame ters7 phase a faulty"phase b fult7 phase c fzltfault resistances ron (ohms):0.0017 ground faultground resistance rg (ohms):0.001external coritrol of fault timing :t

7、rans it ion status 1? 0 1 )：i 0transition times (s):62/60 360/60snubbers resistance rp (ohms):le6snubbers capac it ance cp (farad)okcancel1表示断开，0闭合0 62/6062/60360/60block parameters: tthree-phase transformer (two windings) (mask) (link)this block implements a threephase transformer by using three si

8、ngle-phase transformers set the winding connection to ' yn when you want to access the neutral point of the wyeparame te"nominal power and frequency pn(va) » fn(hz)25x6 , 50winding 1 (abc) connection :ygwinding parametwrs vi ph"fh(vrms) r1 (pu) li (pu) 500e3 , 0.002 , 0.08 winding

9、 2 (abc) connection :y、winding parameters v2 ph-phtyrms) r2 (pu) l2 (pu)sat ura tion charac ter is tic (pu) il phil ; i2 > phi 2 0,0 ; 0.0024, 1.2 ; 1.0, 1.52 simulat© hysteresisspecify initial fluxesmeasurements winding currentsokcancelblock parameters: three-phase breakerethree-phase break

10、er (mask) (link)connect this block in series with th© threephase element you want to switch. you can define th© breaker timing directly from thw dialog box or apply an external logical signal. i£ you check th© 'extgirial control/ box丿 th© external control input will appe

11、ar.parame tersinitial status of breakers gjv switching of phase a" switching of phase bv switching of phase c transition times (s)5/50 50/50external control of switching ti breakers resi stance ron (ohms) 0.001snubbers resistance rp (ohms)le6snubbers capacitance cp (farad)infm e asur em ent s nongokcancel00.1秒断开，o.i1秒合function mag,x二