POWER QUALITY SEMINAR OF IRAN, 2 ND MARCH 2017 Power Quality Seminar. Abel-Zhang,Power Quality Center Manager

Transcription

1 POWER QUALITY SEMINAR OF IRAN, 2 ND MARCH 2017 Power Quality Seminar Abel-Zhang,Power Quality Center Manager

2 Contents Capacitor Unit Capacitor Shunt Bank Type Solution of Filter March 7, 2017 Slide 2

3 Contents Capacitor Unit Capacitor Shunt Bank Type Solution of Filter March 7, 2017 Slide 3

4 HV Capacitor Unit Application in Power Grid March 7, 2017 Slide 4

5 HV Capacitor Unit Product Portfolio Single-Phase Capacitor Oil immersed Capacitor Unit-AC Single-Phase capacitor Unit 3 types of fuse configuration protection: Internal fuse, External fuse and Fuseless Oil immersed Capacitor Unit-DC Apply for DC Project Special Capacitor Three-phases Capacitor Apply in industry project, improve power factor Surge Capacitor Apply in industry project, improve power factor March 7, 2017 Slide 5

6 HV Capacitor Unit Production Specification Internally Fused Voltage Range: kv Power Range: kvar (50 or 60 Hz) Externally Fused Voltage Range: kv Power Range: kvar (50 or 60 Hz) Fuseless Units (ABB Design) Voltage Range: kv Power Range: kvar (50 or 60 Hz) Fuseless banks (Conventional Design) Voltage range: Min. 46 kv Power range: Min. 3 Mvar (50 Hz) Standard: IEC (2005) GB/T DL IEEE Other standard req. by customers March 7, 2017 Slide 6

7 HV Capacitor Unit Oil Type 3-PH Unit Voltage range: kv Maximum power: 500kvar (50 or 60 Hz) Maximum current: 180A Internally connection: or Y Apply for electric motor or industrial load, improve power factor March 7, 2017 Slide 7

8 HV Capacitor Unit Oil Type Surge Unit Single-phase (Europe, IEC) Voltage range: 1-36kV Capacitance/electrode: uF Standard: IEC Single-phase or Three-phase( US, ANSI/IEEE) Voltage range : 1-24kV Capacitance/electrode : uF Standard : IEEE March 7, 2017 Slide 8

9 HV Capacitor Unit Raw material Material Name Aluminum Foil Polypropylene Film Faradol impregnation fluid Bushing Main Character Symmetric thickness and good electrical property advantages. The thinnestthickness could be reached to4.5um Coarsening surface, stable property, high withstand capability, 9um films and above are widely adopted. Improving insulation strength and biodegradable advantages, non-pcb fluid. The connection flange is colded pressed on the bushing which not only guarantees the insulation strength but also the mechanical strength and isolation. Internal fuse Discharge Resistor Tank Adopt special material, good quality, stability and high reliability. Good at thermal stability and ability of overload; High strength and corrosionproof. March 7, 2017 Slide 9

10 HV Capacitor Unit Technology of Fuse Internally Fused Externally Fused ABB Design Conventional Design Fuse Discharge Resistor Fuseless March 7, 2017 Slide 10

11 HV Capacitor Unit Choose suitable fuse technology How to choose fuse configuration depends on voltage and capacity March 7, 2017 Slide 11

12 HV Capacitor Unit Internal fuse VS External fuse Internal fused Capacitor Only one element damaged Less loss of capacitance limit current increasing suitable for big capacity capacitor unit no-direct observe for fuse disconnection Limited by range of voltage VS. capacity External fused capacitor observe fuse disconnection directly fuse from outside cause short-circuit of parallel group more loss of capacitance can not limit current capacitor volume limited may not disconnect if high energy in parallel March 7, 2017 Slide 12

13 Capacitor Shunt Bank Design Comparison March 7, 2017 Slide 13

14 Capacitor Shunt Bank Design Comparison TBB /200BLW 1S14P TBB /700BLW 2S2P March 7, 2017 Slide 14

15 HV Capacitor Unit Definition of capacitor unit Capacitor bank Capacitor unit Capcitor element March 7, 2017 Slide 15

16 HV Capacitor Unit Capacitor Unit Construction Connection terminal Bushing Nameplate Element Internal fuse Discharge Resistor earth insulation March 7, 2017 Slide 16

17 HV Capacitor Unit Design principle w U+ d h Available area of electrode (mm 2 ) = A d x Uw Capacitance (mf) C = ε A h Reactive power (kvar) Q = ωc U 2 System Specification Operation condition March 7, 2017 Slide 17

18 HV Capacitor Unit Design principle Consideration of safety plenty level Film layer (3-layers is normal) Strong puncture- against ability Foil auto-folding of electrode Regular edge stress; Excellent partial discharge ability Foil Folded Foil bulge edge D D =thickness of film Film a a = folded radius March 7, 2017 Slide 18

19 HV Capacitor Unit Process Control High quality raw materials, with optimized design scheme to guarantee the product life and reliability; Barcode System records full production process as to ensure consistent quality; March 7, 2017 Slide 19

20 HV Capacitor Unit Production process Al foil Dielectric material Al foil Element Internal Fuse Stacking Canning Painting HV test Impregnation March 7, 2017 Slide 20

21 HV Capacitor Unit Module Assembly & Packing Finish goods check for capacitor unit; Connection assembly; Rack assembly; Unit packing and module packing; Modularized packages of product, conveniences for installation and shorten working time and cost at site March 7, 2017 Slide 21

22 HV Capacitor Unit Characters of Capacitor unit Advanced internally fused technology Lower loss High reliability Narrow capacitance deviation range Better weight/per kvar ratio; Good sealing; Compared with others better ability at over voltage and over current; Inside discharge resistor Wide temperature range Suitable for varies of climate condition and frequent operations Tank painting gives a good reflection of ultraviolet, aging slowly, high anti-corrosion; Strict selection and control of auxiliary material to guarantee the quality stability of capacitor; Two-dimension ID nameplate, long term quality tracing and easy for follow-up purchasing March 7, 2017 Slide 22

23 HV Capacitor Unit Characters of Capacitor unit IEC standard requirement Requirement from China utility power company standard ABB capacitor unit: 0.02% or 0.015% Local company: 0.1% 200W/200kvar 40W/200 kvar or 30W/200kvar March 7, 2017 Slide 23

24 HV Capacitor Unit Characters of Capacitor unit March 7, 2017 Slide 24

25 Contents Capacitor Unit Capacitor Shunt Bank Type Solution of Filter March 7, 2017 Slide 25

26 Capacitor Shunt Bank Function & Parameter range Installed in Transmission and distribution network Increase transmission capability Improve power factor Lower line losses Enhance power quality Voltage scope: kv Capacity range: Mvar March 7, 2017 Slide 26

27 Capacitor Shunt Bank Explanation of Type T BB A /500 A QW W for outdoor Q for bridge different current A for single star Unit rated capacity (kvar) Bank rated capacity(kvar) Bank rated voltage(kv) A for QBank-A BB for shunt bank T for bank March 7, 2017 Slide 27

28 Capacitor Shunt Bank Structure Lightning arrester Reactor Hot-galvanized steel rack Capacitor Connecting line Current Transform er Supporting insulator Discharge coil March 7, 2017 Slide 28

29 Capacitor Shunt Bank Structure QBANK-A QBANK-B QBANK-C March 7, 2017 Slide 29

30 Capacitor Shunt Bank Structure QPLUS-A-Example QPLUS-B-Example QPLUS-C-Example March 7, 2017 Slide 30

31 Capacitor Shunt Bank Features May choose stainless, Hot dipped galvanized rack; Low failure rate, annual failure rate is lower than 0.1% by statistic. Easy to install. Capacitor unit & rack has been installed together in the factory. May choose ABB s disconnection switch; Specific connecting structure between BV cable and bushing; High level of standardized installation. Simple structure, easy to maintain March 7, 2017 Slide 31

32 Capacitor Shunt Bank Anti-seismic simulation March 7, 2017 Slide 32

33 Capacitor Shunt Bank HVDC AC Tuning Filter Capacitors Rack Post Insulator Connection Cable Armour Clamp Current Transformer March 7, 2017 Slide 33

34 Capacitor Shunt Bank HVDC DC Tuning Filter Capacitors Rack Post Insulator Connection Cable Armour Clamp March 7, 2017 Slide 34

35 Capacitor Shunt Bank Test Capacitor Bank March 7, 2017 Slide 35

36 Capacitor Shunt Bank Accessary March 7, 2017 Slide 36

37 Capacitor Bank Series Compensation Installation for Distribution Grid/Railway March 7, 2017 Slide 37

38 Contents What is Power Quality Capacitor Unit Capacitor Shunt Bank Type Solution of Filter March 7, 2017 Slide 38

39 Type Solution of Filter Filtering concept Clean Power Grid Clean water Purification Dirty water Clean Dirty Current Dirty Current Filter Factory Non Linear Load March 7, 2017 Slide 39

40 Type Solution of Filter Project Process Power Quality Inquiry Harmonic Measurement Test Report Test Report Ready Schematic Design Filter Design Filtering effect checking Approve Produce Delivery Installation March 7, 2017 Slide 40

41 Type Solution of Filter Harmonics representation Time domain 25% 20% 15% 10% 5% 0% Frequency domain March 7, 2017 Slide 41

42 Type Solution of Filter Power Quality Measurement March 7, 2017 Slide 42

43 Type Solution of Filter Power Quality Measurement Site monitor Connection Diagram March 7, 2017 Slide 43

44 Type Solution of Filter Harmonic Analysis i a = Id[sinwt - sin 5wt - sin 7wt + sin11w t+ sin13wt -L] p Fundermental current I 1 = 6 p I d Harmonic current 2 2 I = I - I = I h 1 a 6 pulse rectifier THD I will be 29.65%! + + = 50Hz 5 harmonic (250Hz) 7 harmonic(350hz) Distortion curve March 7, 2017 Slide 44

45 Type Solution of Filter Harmonic Analysis March 7, 2017 Slide 45

46 Type Solution of Filter Type of Filters March 7, 2017 Slide 46

47 Type Solution of Filter Type of Filters March 7, 2017 Slide 47

48 Type Solution of Filter Type of Filters Z L R C f IRMS L C2 R I1 In C1 March 7, 2017 Slide 48

49 Type Solution of Filter Harmonic Analysis Matlab Simulink ATP PSCAD March 7, 2017 Slide 49

50 Type Solution of Filter Harmonic Analysis Impedance- Frequency characteristic x Fault level current (ka) 6 Impedance(ohm) Z_total1( x) x Harmonic order 25 March 7, 2017 Slide 50

51 Type Solution of Filter Real Cases of Filter solution Customer System Guiyang Aluminum 220kV network Operating date Power System Sd(min) MVAR DC load: Active Reactive AC load Active Reactive 89Mvar 12Mvar 5 Rectifiers,12 pulse per rectifier,totally 60pulses 272MW 23MW Power factor 0.87, target:0.92~0.984 ( 5 rectifiers) 0.91~0.96(4 rectifiers). March 7, 2017 Slide 51

52 Type Solution of Filter Real Cases of Filter solution Branch 5 th 7 th 11 th Model Capacity kvar Capacitance μf Capacity /unit kvar Rated voltage kv TALA /450BLW TALA /300BLW TALA /450BLW Series & parallel Protect Type Inductance mh 2 S 2 P Double-star unbalance current protection March 7, 2017 Slide 52

53 Type Solution of Filter Real Cases of Filter solution ABB Group March 7, 2017 Slide 53 Benefit to Customer Power factor increases from 0.87 to above 0.93(meet power department requirement) Reduce harmonic; decrease the electrolytic aluminum time, electrolyzer overhaul cycle lengthened. Electrolytic aluminum productivity increased. Running in later stage As for electrolytic aluminum electrolytic copper factory, adopt strong direct current electrolysis. So, the magnetic inductance of electro magnetic to nearby metal objects have to be taken into consideration. Magnetic metal as racks, accessories are not allowed. March 7, 2017 Slide 53

54 Type Solution of Filter Real Cases of Filter solution A Before After Harmonics current 滤波前后谐波电流对比 comparison before and after filter 滤波前谐波电流 滤波后谐波电流 h March 7, 2017 Slide 54

55 Type Solution of Filter Real Cases of Filter solution March 7, 2017 Slide 55

56 Type Solution of Filter Real Cases of Filter solution March 7, 2017 Slide 56

57 Type Solution of Filter Real Cases of Filter solution March 7, 2017 Slide 57

58 Type Solution of Filter Real Cases of Filter solution MY Samalaju 275kV Filter Current Transformer Earthing Switch Capacitor Bank Reactor Resistor Arrestor March 7, 2017 Slide 58

59 Type Solution of Filter Real Cases of Filter solution March 7, 2017 Slide 59

60 Type Solution of Filter Real Cases of Filter solution 1.1. For capacitor bank analysis Parameters design of the components: Capacitor bank Reactor Arrester Magnetic Voltage Transformer Current transformer Earthing switch Characteristic curve of MFC Frequency Impedance Modeling the capacitor bank by PSCAD Inrush current analysis Transient voltage analysis Insulation coordination calculation 1.2. For power system Power factor & Voltage rise analysis Resonance analysis Harmonic resonance frequency calculation Frequency scan by PSCAD model with 4*100Mvar bank operating Harmonic analysis March 7, 2017 Slide 60

61 Type Solution of Filter Real Cases of Filter solution March 7, 2017 Slide 61

62 Type Solution of Filter Real Cases of Filter solution March 7, 2017 Slide 62

63 Type Solution of Filter Real Cases of Filter solution Quantity 2sets Rated voltage(kv) 35 Rated capacity(mvar) H2 Filter 54.1 H3 Filter 28.8 H4 Filter 13.4 March 7, 2017 Slide 63

64 Type Solution of Filter Real Cases of Filter solution Big Noise With 7 th filter Operating ABB Engineer check and exclude the product quality reason ABB PQC engineer do the PQ test ABB PQC provide simulation & Solution Installed the protection equipment, Noise disappear ABB PQC provide the PQ test and simulation again and operating suggestion Customer follow ABB s suggestion, Succeed. March 7, 2017 Slide 64

65 Type Solution of Filter Real Cases of Filter solution Variant kinds of load, DC/AC Drive, DC/AC arc furnace Issues with harmonic, low PF, and loadbalancing Mixed solution with Dynacomp, MV filter, and MV SVG Aiming to have a standard sizing tool for future use March 7, 2017 Slide 65

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