1、 ? 5# %Z*吕广强1, 2, 赵剑锋2, 程null 明2 , 许null 扬1( 1null 江苏省电力公司技术中心, 南京210036; 2.东南大学电气工程学院, 南京210096)Knull1: “ - ? i5 3y, ? 5sZEe/ b sZE y 4 | ? + , e/ z + b / T _ ? / , % ? lT,s / ?,iZ 1 b1oM: ; ? ; ; ; %Zms |: T M728null 2DS M : AcI|: 1003null6520(2007) 01null0053null04Dynamic Quality of Power Supply
2、and Its Solution for Distribution SystemLnull Guangqiang1, 2, ZHAO Jianfeng2 , CHENG Ming2, XU Yang1( 1. Jiangsu Electric Power R2. School of Electrical Engineering, Southeast U niversity, Nanjing 210096, China)Abstract: In recent years, the problem of the dynamic power quality has been the importan
3、ce of the power quality.Compared with the steady state power quality, the main characteristic of the dynamic power quality is the short dunullration. The dynam ic power quality includes voltage dips, voltage surge, and instant interruption. Because these dynullnamic power quality results in severely
4、 effects on the economic benefit of many manufacturers, it is very important toimprove the dynam ic power quality. The dynamic voltage quality is the main problem of dynamic power quality, andthe voltage dips is most widespread than problems of other voltage quality. The voltage dips appears as the
5、fall ofthe voltage amplitude and the change of the voltage phase. Usually, the main problem is the voltage amplitude. Thedynamic power quality is analyzed in this paper. The dynamic voltage quality is the main problem in dynamic powerquality, and the voltage dips is most widespread compared with pro
6、blems of other voltage quality. The analysismethods and the control technology used to study dynamic power quality are introduced. The dynamic parameters,which can be used to describe the dynamic power quality, are rapidly required with accuracy by the reasonable analynullsis method, and the correct
7、 control technology guarantees the good dynamic performance of devices and improves thepower quality. Custom power technology, which takes the customers benefit into account, can effectively solve thedynamic power quality. T he operating principle and the function of regulating devices based on cust
8、om power technullnology are analyzed, and the comparison among these devices is carried out.Key words: distribution network; dynamic power quality; custom power; voltage dip; solution0nullnull ? 5 a a H jb“dBt dLv Y ? ,0 q 0/ ? 94 1 pb ? XS = BbS = 1 min,VCVa4a ob ? Y HW+, 2v ,VC: 6a, O HW0. 5 1min,
9、 rsYS110% 180%10% 90%; M, HW ? 3 y M; M,null53nullnull null33 1 2007 Mnull null 1nullnullnull/null High Voltag e EngineeringVol. 33 No. 1Jan. null 2007* 2v M = S9 “(4016001009)o L?5M M 1, 2bm1 ? 5 Uimb ? 5 ,7 K R, + Y HW ,vl HWSdBSbIEEES + S S 0. 10 0. 9, HW1/ 2 1 min; IECS5 -s1 , HWK1/ 2 + Esb1. 2
10、null ? 5 3y ? 5y:“d #p; L b;“d 71 T;% ? ! T; 3V 3b1. 3 null ? 5 80% ? 5 g (7oa 71 Ty (N1b# % ? 1o , K1b2null ? s e2. 1 nullsZEooMM a HW ? 5,s EaosE K HsZE,7 =MTK |) m 5 ? _? 1Tby a 6# H ? 5,y HW a v,#|sE ? T O MbZE1_EaMElosZE3 9, 10b_s1 C H_ ? Vb YEMT PaEMTDCaNET OMAC _PSPICEaMATLAB 0_2v bME1 MZ T4
11、| |,1FFTs sEanullnullMEdq0MEblosE M ZE, ?A UVM , V M+b lof : DaubechiesloaBloaMorletlo#Meyerlo; E5 T y lo Enull Mallat Ebm1null ? T UimFignull 1null Diagram of theform of dynamic power qualityV1null /YTab.1null Effects producedby voltage dipssY ! /Y 0 e b kN 2 H,KCb 1 /Qb 6 , M“VSDbF 3 ,KCb ( 1 ,( $
12、 h; 12 , bV2null / Y#Tab.2null Accidents causedby voltage dips 14/Qnull NEC,Z /87%, 0. 12s90%, 0. 01s null“d , 100 /Q2. 2 null e/ e/ ,5.dPID eK 0. 5 sbUPST !, Vrh“d Hb5U PS z Y+, K, O ,#v rT AbDVRY “d L ,YV1 M IM 3F L,V7 byDVR1“d ,#M ? !9 1lU PSb 6, z Y+ N1 P “ - %5K6 m bSMES L |“d H ? T%i,i1 HYVV3n
13、ull ?Tab. 3null Functions of different devices! l 6 H H oAPF DST ATCOM DVR SST S SSCB SMES UPQC V4null rm1Tab.4null Comparison of the benefitand cost of devices/ ZSSTS DVR U PS SMESM/ 22 41 54 515/ ( ( kVA)null1) 60 300 800 8009n/ 24 120 240 240Mn/ 1. 2 6 60 36M/ 7. 44 37. 2 122. 4 98. 4rm12. 96 1.
14、10 0. 44 0. 52H “db5 “ -XlSMES,y KE LC . ? 5/ ?Z( ) null “dJ J . 1 !, 2003, 23( 12) : 1null4.Yang Honggeng, Xiao Xianyong, LIU Junnullyong. Issues andtechnology assessment on power quality Part 3: Voltage sags inpower system J . Electric Power Automation Equipment,2003, 23(12) : 1null4. 4 ,nullj,p;:
15、. “d 5 J .? , 2003, 31( 10) : 56null62.Jin Yanyun, Luo Yi, T u Guangyu. Study of voltage sags inpower distribution sy stem J . Relay, 2003, 31( 10) : 56null62. 5l), nulla.“dJ n ) J . , 2005 ( 4) : 40null41.Gao Xiaoxia, Mei Bing. Researching into controlling voltag e sagin electric power supplying sy
16、stem J . Shanxi Electric Power,2005 ( 4) : 40null41. 6 Buxton R. Protection from voltag e dips with the dynamic voltnullag e restorer C . IEE Half Day Colloquium on Pages, London:1998. 7b,L, ,. FACT S#DFACT S/ J . “d1, 2000, 24( 19): 1null7.Han Yingduo, Yan Gangui, Jiang Qirong, et al. Electric powerin information society and FACT S Enullmail: largedot 163. comutnull 1972null , 3,p V, q,Z_ 0 “dbl null 2006null11null28 null null null nullI nullR onull56null Jan. 2007 High null Voltage null Engineering Vol. 33 No. 1 null
