7 Vol. 7 No. 003 Power Sytem Technology Fe. 003 000-36730030-0004-05 T7. A 3007 EQIVALENT ODEL OF HVDC-VSC AND ITS HYBRID SILATION TECHNIQE WANG Guan, CAI Ye, ZHANG Gu-n, X Zheng Department of Electrcal Engneerng, Zhejang nverty, Hangzhou 3007, Zhejang Provnce, Chna ABSTRACT: The concept of hyrd mulaton and t mplementaton preented and an equvalent mulaton model of HVDC-VSC (voltage ource converter aed HVDC developed y gnorng the wtchng rpple. ng hyrd mulaton technque and equvalent mulaton model not only the peed of mulaton can e mproved, ut alo the dynamc charactertc of HVDC-VSC can e well repreented. It proved y the mulaton reult that oth the hyrd mulaton technque and the equvalent model of HVDC-VSC are effectve. HVDC-VSC HVDC-VSC HVDC-VSC HVDC-VSC PW HVDC-VSC PW HVDC-VSC KEY WORDS: voltage ource converterhvdc pace vectorequvalent mulaton model PW Voltage ource converter aed HVDC HVDC-VSC HVDC-VSC VSC HVDC-VSC HVDC- VSC HVDC-VSC HVDC-VSC HVDC-VSC HVDC-VSC VSC NETOAC HVDC-VSC HVDC-VSC Voltage ource converter aed HVDC HVDC-VSC [~3] & VSC & & & X (5077034 (G998003
7 5 u a = u a a = a P = n ( X u = u = (3 ( co u c = u c c = c Q = ( X u a u u c a c PQ VSC ua u u c a c P ac P d 0 T T3 T5 C DC Lne u a L a R u u a / A u u B u c c u c T4 T6 T C C u / DC Lne HVDC-VSC Fg. VSC-HVDCone termnal 3 FACTS HVDC u a = coωt FACTS HVDC 3 u = co( ωt 0 (5 NETOAC 3 u c = co( ωt 0 3 (4(5 ω ω ua a ua z a u a a z a d u = z u z R L u (6 d t z c u c c z c uc c uc p = u u u = u u (7 z a z z c u a u u c a= a = c= c (a u a = u a u = u u c = u c a c z a z z c 4 HVDC-VSC j0 j40 ( ua ue uce 3 ( p ac = p (9 Fg. Interface method for hyrd mulaton (7(8(9 (a u aca uc = (0 u ae CCCS VSC PW VCVS ( CSVS CCCS µ ( 0 < µ ( 0 V = ac a a c c ac a (8 = c jωt e (4 p = u (8 VSC R
6 Power Sytem Technology Vol. 7 No. = ( µ ae VSC VSC u / = µ u = ( uae (0 h / CCCS ( VSC h ( h (VCVS HVDC-VSC 3 h = µ u ( h (5 a L a R a L R c L c R c d 3 HVDC-VSC Fg. 3 Equvalent crcut for VSC-HVDC (one termnal u > 3 VSC u < VSC VCVS ( CCCS 3 HVDC-VSC 5 NETOAC HVDC-VSC INPT 4 NETOAC [4] (0 ( 4 (0( u aca u c = (3 u u d Q a = µ u = (4 uae d Q d a VSC = =0kVR =R =0.8L =L =0mH VSC C =C =00 F R 0 = 0. 7 Ù/km L 0 =.036 mh/km VSC 0 km 0 kv VSC 3 VA 900 Hz 5 6 [5] ref (5 PW (3(5 3 HVDC-VSC Q P 0 Z L a R d R m C C Id Pd R d / R Id m C d R d / C 0 R L a Q P Z 4 HVDC-VSC Fg. 4 Two termnal VSC-HVDC
7 7 Q h jwt Q ref Q = ud (e h PI( generate frng (6 frng pule pule VSC current 0 I ynchronze d controllng Μ gnal teady-tate Μ 0 h nvere model ynchronzer jwtφ = ud (e h (7 Μ Μ 0 0 (6(7 φ Μ' ac u voltage φ Μ' dref d PI( recproca jϖ t φ jϖ t φ d (4 5 Fg. 5 Control dagram for voltage controlllng taton 7 8 7 I dref Ι d Q ref Ι d current controllng teady-tate nvere model PI(III 0 Μ 0 Μ generate frng pule frng pule ynchronze gnal ynchronzer 4 7(a (c 8(a (c 7 8 0 Q ac u voltage Μ PI(IV Q PI 0 0 0 0 6 7( 8( 7 Fg. 6 Control dagram for current controllng taton 8 (5 PI 0 PW µ = 0 0 0 7 Fg. 7 Smulaton reult wth real crcut and pure electromagnetc mulaton mode
8 Power Sytem Technology Vol. 7 No. 8 Fg. 8 Smulaton reult wth equvalent crcut and hyrd mulaton method 7 8 HVDC-VSC HVDC-VSC 6 HVDC-VSC HVDC-VSC HVDC-VSC HVDC-VSC VSC HVDC [] Aplund GErkon K et aldc Tranmon aed on voltage ource converter[c]cigre998 [] Stendu LErkon KHVDC Lght An excellent tool for cty center nfeed[c]powergen ConferenceSngapore9999 [3] Grnaum R Halvaron BWlk-Wlczynk A FACTS and HVDC lght for power ytem nterconnecton[c] Power Delvery ConferenceadrdSpan9999 [4] Le XLerch EPovh D et ala large ntegrated power ytem oftware package NETOAC[C] Proceedng of POWERCON'98, BejngChna7~ [5] Zhang GunXu ZhengSteady-tate model for VSC aed HVDC and t controller degn[c]ieee PES Wnter meetng 00 Columu OhoSAJan8-Fe 00-03- 978- HVDC&FACTS 978- HVDC&FACTS FACTS