BS EN 60143-1:2015
$198.66
Series capacitors for power systems – General
| Published By | Publication Date | Number of Pages |
| BSI | 2015 | 70 |
This part of IEC 60143 applies both to capacitor units and capacitor banks intended to be used connected in series with an a.c. transmission or distribution line or circuit forming part of an a.c. power system having a frequency of 15 Hz to 60 Hz.
The primary focus of this standard is on transmission application.
The series capacitor units and banks are usually intended for high-voltage power systems. This standard is applicable to the complete voltage range.
This standard does not apply to capacitors of the self-healing metallized dielectric type.
The following capacitors, even if connected in series with a circuit, are excluded from this standard:
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capacitors for inductive heat-generating plants ( IEC 60110‑1 );
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capacitors for motor applications and the like ( IEC 60252(all parts));
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capacitors to be used in power electronics circuits ( IEC 61071 );
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capacitors for discharge lamps ( IEC 61048 and IEC 61049 ).
For standard types of accessories such as insulators, switches, instrument transformers, external fuses, etc. see the pertinent IEC standard.
Additional requirements for capacitors to be protected by internal fuses, as well as the requirements for internal fuses, are found in IEC 60143‑3 . See also Annex C.
Additional requirements for capacitors to be protected by external fuses, as well as the requirements for external fuses, are found in Annex A and Annex C.
A separate standard for series capacitor accessories (spark-gaps, varistors, discharge reactors, current-limiting damping reactors, damping resistors, circuit-breakers, etc.), IEC 60143‑2, has been revised and was completed in 2012. A separate standard for internal fuses for series capacitors, IEC 60143‑3 has been revised and was completed in 2013.
Some information regarding fuseless capacitor units and fuseless capacitor banks is found in Annex C.
The object of this standard is:
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to formulate uniform rules regarding performance, testing and rating;
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to formulate specific safety rules;
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to serve as a guide for installation and operation.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 6 | English CONTENTS |
| 10 | FOREWORD |
| 12 | 1 Scope and object 2 Normative references |
| 13 | 3 Terms and definitions |
| 16 | Figures Figure 1 – Typical nomenclature of a series capacitor installation |
| 19 | 4 Service conditions 4.1 Normal service conditions 4.2 Ambient air temperature categories Tables Table 1 – Letter symbols for upper limit of temperature range |
| 20 | 4.3 Abnormal service conditions 4.4 Abnormal power system conditions 5 Quality requirements and tests 5.1 Test requirements for capacitor units 5.1.1 General 5.1.2 Test conditions |
| 21 | 5.1.3 Voltage limits as established by overvoltage protector Figure 2 – Classification of overvoltage protection |
| 22 | 5.1.4 Determination of protective level voltage Upl and Ulim 5.2 Classification of tests 5.2.1 General 5.2.2 Routine tests |
| 23 | 5.2.3 Type tests 5.2.4 Special test (ageing test) 5.3 Capacitance measurement (routine test) 5.3.1 Measuring procedure |
| 24 | 5.3.2 Capacitance tolerance 5.4 Capacitor loss measurement (routine test) 5.4.1 Measuring procedure |
| 25 | 5.4.2 Loss requirements 5.4.3 Losses in external fuses 5.5 Voltage test between terminals (routine test) 5.6 AC voltage test between terminals and container (routine test) 5.7 Test on internal discharge device (routine test) |
| 26 | 5.8 Sealing test (routine test) 5.9 Thermal stability test (type test) 5.9.1 Measuring procedure Table 2 – Ambient air temperaturein thermal stability test |
| 27 | 5.9.2 Capacitor loss measurement 5.10 AC voltage test between terminals and container (type test) |
| 28 | 5.11 Lightning impulse voltage test between terminals and container (type test) 5.12 Cold duty test (type test) |
| 29 | 5.13 Discharge current test (type test) Figure 3 – Time and amplitude limits for an overvoltage period waveform |
| 30 | 6 Insulation level 6.1 Insulation voltages 6.1.1 Standard values 6.1.2 Insulation to earth and between phases 6.1.3 Insulation levels for insulators and equipment on the platform |
| 33 | Table 3 – Standard insulation levels for range I (1 kV < Um ≤ 245 kV) |
| 34 | Table 4 – Standard insulation levels for range II (Um > 245 kV) (1 of 2) |
| 36 | Table 5 – Typical insulation levels for platform-to-ground insulators (1 of 2) |
| 37 | 6.2 Creepage distance |
| 38 | 6.3 Air clearances Table 6 – Specific creepage distances |
| 40 | Table 7 – Correlation between standard lightning impulse withstand voltagesand minimum air clearances |
| 41 | Table 8 – Correlation between standard switching impulse withstand voltagesand minimum phase-to-earth air clearances Table 9 – Correlation between standard switching impulse withstand voltagesand minimum phase-to-phase air clearances |
| 42 | 7 Overloads, overvoltages and duty cycles 7.1 Currents 7.2 Transient overvoltages Figure 4 – Air clearance versus a.c. power frequency withstand voltage |
| 43 | 7.3 Duty cycles 8 Safety requirements 8.1 Discharge device 8.2 Container connection |
| 44 | 8.3 Protection of the environment 8.4 Other safety requirements 9 Markings and instruction books 9.1 Markings of the unit 9.1.1 Rating plate |
| 45 | 9.1.2 Warning plate 9.2 Markings of the bank 9.2.1 Instruction sheet or rating plate 9.2.2 Warning plate 9.3 Instruction book |
| 46 | 10 Guide for selection of ratings, installation and operation 10.1 General 10.2 Reactance per line, rated reactance per bank and number of modules per bank 10.2.1 Capacitive reactance per line |
| 47 | 10.2.2 Number of series capacitor banks in a transmission line |
| 48 | 10.2.3 Number of modules in a capacitor bank 10.2.4 Future requirements for series capacitors 10.3 Current ratings for the bank 10.3.1 General |
| 49 | 10.3.2 Typical bank overload and swing current capabilities Figure 5 – Typical current-time profile of an inserted capacitor bank following the fault and clearing of parallel line Table 10 – Typical bank overload and swing current capabilities |
| 50 | 10.3.3 Analysis to determine the continuous and emergency overload current rating 10.3.4 Analysis to determine the swing current rating 10.4 Overvoltage protection requirements |
| 51 | 10.5 Voltage limitations during power system faults 10.5.1 General 10.5.2 Voltage limitation when the inductance between the primary overvoltage protector and the capacitors is not significant |
| 52 | 10.5.3 Voltage limitation when the inductance between the primary overvoltage protector and the capacitors is significant 10.6 Protective and switching devices 10.6.1 Capacitor fusing 10.6.2 Other devices 10.6.3 Connection diagrams |
| 53 | 10.7 Choice of insulation level 10.7.1 Normal cases 10.7.2 Altitude exceeding 1 000 m |
| 54 | 10.8 Long line correction |
| 55 | 10.9 Other application considerations 10.9.1 General 10.9.2 Ferro-resonance 10.9.3 Sub-synchronous resonance 10.9.4 Relay protection of the power system |
| 56 | 10.9.5 Attenuation of carrier-frequency transmission 10.9.6 Non-transposed transmission lines 10.9.7 Power system harmonic currents 10.9.8 TRV across line circuit-breakers |
| 57 | 10.9.9 Delayed line current zero crossing 10.9.10 Prolonged secondary arc current |
| 58 | Annex A (normative)Test requirements and application guide for externalfuses and units to be externally fused A.1 Overview A.2 Purpose A.3 Terms employed in Annex A A.4 Performance requirements |
| 59 | A.5 Tests A.5.1 Tests on fuses A.5.2 Type tests on capacitor container A.6 Guide for coordination of fuse protection A.6.1 General A.6.2 Protection sequence |
| 60 | A.7 Choice of fuses A.7.1 General A.7.2 Non current-limiting fuses A.7.3 Current-limiting fuses A.8 Information needed by the user of the fuses |
| 61 | Annex B (informative)Economic evaluation of series capacitor bank losses |
| 62 | Annex C (informative)Capacitor bank fusing and unit arrangement C.1 General C.2 Internally fused capacitor bank C.3 Externally fused capacitor bank |
| 63 | C.4 Fuseless capacitor bank Figure C.1 – Typical connections between capacitor units in a segment or phase |
| 64 | Figure C.2 – Typical connections between elements within a capacitor unit |
| 65 | Annex D (informative)Examples of typical connection diagrams for large seriescapacitor installations for transmission lines Figure D.1 – Diagrams for smaller banks |
| 66 | Annex E (informative)Precautions to be taken to avoid pollution of the environmentby polychlorinated biphenyls |
| 67 | Bibliography |
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