IEEE C37 06-2009 en AC High-Voltage Circuit Breakers Rated on a Symmetrical Current Basis-Preferred Ratings and Related Required Capabilities for Voltages Above.pdf

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13、3#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23g55g48IEEE Std C37.06-2009 IEEE Standard for AC High-Voltage Circuit Breakers Rated on a Symmetrical Current BasisPreferred Ratings and Related Required Capabilities for Voltages Above 1000 V Sponsor Switchgear Committee of the IEEE Power +1

14、978 750 8400. Permission to photocopy portions of any individual standard for educational classroom use can also be obtained through the Copyright Clearance Center. iv Copyright 2009 IEEE. All rights reserved. Introduction This introduction is not part of IEEE Std C37.06-2009, IEEE Standard for AC H

15、igh-Voltage Circuit Breakers Rated on a Symmetrical Current BasisPreferred Ratings and Related Required Capabilities for Voltages Above 1000 V. This standard is a revision of ANSI C37.06-2000. It reflects changes needed to coordinate with the final wording contained in the defining IEEE Std C37.04-1

16、999 and corrigendum, IEEE Std C37.04a-2003, IEEE Std C37.04b-2008, IEEE Std C37.09-1999 and corrigendum, IEEE Std C37.09a-2005, IEEE PC37.09b (Draft 3, September 2009), IEEE Std C37.010-1999 and IEEE Std C37.010-2005, and other international standards such as IEC 62271-100:2008 B5.a,bANSI C37.06-200

17、0 and the earlier editions were prepared by working groups sponsored by NEMA. In January 2003, NEMA transferred responsibility for ANSI C37.06 to the IEEE Power & Energy Society Switchgear Committee. IEEE Std C37.06 is now the responsibility of the High-Voltage Circuit Breaker Subcommittee of the IE

18、EE Power & Energy Society, Switchgear Committee. This introduction summarizes significant substantive and editorial changes between this revision and the 2000 version. It also comments historically on the changes made since the 1987 edition and the evolution of the preferred ratings standards. This

19、standard, IEEE Std C37.06-2009, identifies preferred ratings of circuit breakers and does not exclude use of circuit-breaker characteristics not identified in this standard. The major focus of this revision is to adjust the ratings tables to coordinate with the revised scheme for representation of t

20、ransient recovery voltage (TRV). The new TRV scheme has been defined and elaborated in IEEE Std C37.04b-2008, IEEE PC37.09b (Draft 3, September 2009), and IEEE Std C37.010-2005, and this revision brings ANSI C37.06-2000 into harmony with those documents. The manner of representing the TRV has been c

21、hanged as part of a major effort to harmonize with the TRV requirements in IEC 62271-100:2008 B5. Accompanying this change in the TRV representation is the introduction of the rate of rise of recovery voltage (RRRV) ratings. The representation of TRV in this revision is harmonized with that in IEC 6

22、2271-100:2008 B5. (A joint IEEE and IEC task force working group was established to solve the problem of TRV envelopes). The new TRV capability of circuit breakers according to IEEE Std C37.04b-2008 is described by two- or four-parameter envelopes rather than the former “1cosine” and “exponential-co

23、sine” envelopes used in previous editions of this standard. The two-parameter method is used on voltages below 100 kV, and the four-parameter method is used at 100 kV and above. Comprehensive explanations of the two-parameter and the four-parameter methods are provided in this standard. The technica

24、l data of the tables remains very much the same, except that some ratings have been updated to reflect the requirements of the users. In particular, the tables now reflect a first pole to clear factor of 1.3 and 1.5 for effectively grounded and non-effectively grounded systems respectively. In order

25、 to keep the tables of reasonable size, it has been necessary to add tables with the data for the new representation of TRV values. These tables make the ratings easier to understand and simplify use during power testing. The tables provide the preferred values for the inherent (i.e., prospective) T

26、RV. The tables provide the TRV values for 100% terminal faults (T100), as well as for 60%, 30%, and 10% terminal faults (T60, T30, T10), plus the short-line fault and the out-of-phase switching conditions. Many technical comments have been given in the text along with curves, or details have been li

27、sted explicitly in the tables to assist with a summary understanding of the phenomena involved. The explanatory information clauses for the tables are indicated in clauses that follow the tables. It is noted that according to aInformation on references can be found in Clause 2. bThe numbers in brack

28、ets correspond to those of the bibliography in Annex C. v Copyright 2009 IEEE. All rights reserved. the IEEE formatting, the Notes on tables are normative (mandatory part of the standard) and that Notes to the text are informative. Harmonization of voltages was begun with the adoption of 550 kV and

29、800 kV, replacing 525 kV and 765 kV respectively, in IEC. The transmission voltage classes of 121 kV, 169 kV, and 242 kV were changed to 123 kV, 170 kV and 245 kV (maximum voltages) respectively listed in ANSI C37.06-1997 to complete the harmonization of voltages with IEC. New symbols for the recove

30、ry voltage given in IEEE Std C37.04b-2008 are used in this document, and the correlation between the new and the old symbols is discussed in the “Information” clause referenced in the footnote of the affected tables. The new symbols and TRV representation are in harmony with the revised IEEE Std C37

31、.011-2005. To facilitate use of the tables, the individual lines and columns have been identified with line numbers and column numbers. The TRV values have been revised to reflect the new representation of the TRV, but other key values have not been changed from the 2000 edition. Throughout this doc

32、ument, the term peak traditionally associated with the maximum value of transient or periodic waveform is used. This continues the practice introduced in the 1997 edition, which substituted peak for the previously used crest term. In an effort to harmonize with IEC 62271-series standards, new terms

33、Class S1 and Class S2 are used to denote traditional terms as indoor or outdoor. The term Class S1 circuit breakers is for cable systems (historical predominant use was for indoor circuit breakers) and the term Class S2 circuit breakers is for overhead line systems (historical predominant use was fo

34、r outdoor circuit breakers). Definitions are included in IEEE Std C37.04b-2008. General notes 1) For the previous 1-cosine standard waveform envelope, the time-to-peak (T2) value is equal to 1.138 times the (t3) parameter value listed in this standard. This is a purely mathematical translation to fi

35、t the new TRV representation. The actual TRV that the circuit breaker must withstand is essentially identical under the old system as in the new system. The restated TRV values are consistent with an amplitude factor of 2.0, namely for non-damped systems. The old envelopes were characterized by the

36、time-to-peak value (T2) and its peak (E2) was the focal point of the old TRV. In the new scheme, the parameters are (t3) and (uc). 2) The titles of the tables include the term prospective TRV to emphasize that the TRV ratings are for the prospective (inherent to the system) TRVs that would result if

37、 unmodified by the interruption process either by the arc voltage, circuit-breaker capacitance, capacitors, and/or of any resistor insertion designed into the circuit breaker. Specific notes on individual tables Table 1The data in Table 1 is essentially the same as in Table 1 of ANSI C37.06-2000 edi

38、tion for indoor circuit breakers. It has been redesignated for Class S1 circuit breakers, those connected by cables rather than directly to overhead lines. The TRV data has been relocated to Table 2 and Table 3. The historic voltage range factor K has been dropped, as it was eliminated from the rati

39、ng structure in the 1999 revision of IEEE Std C37.04-1999. Circuit breakers designed and tested in accordance with the 1979 (or earlier) editions of IEEE C37.04-1999 and IEEE Std C37.09-1999, with a voltage range factor K greater than 1.0, should be applied in accordance with the older standards. Th

40、e preferred ratings for such circuit breakers are shown in ANSI C37.06-1987. vi Copyright 2009 IEEE. All rights reserved. Table 2 and Table 3These tables contain the expanded TRV data values for the new two-parameter method representation of TRV for circuit breakers rated below 100 kV. The old “rate

41、d time-to-peak” (T2) values for TRV have been replaced by the new t3values in accord with IEEE Std C37.04b-2008. The values are harmonized with the values in IEC 62271-100:2008 B5 and are based on an amplitude factor of 1.40 for the T100 terminal fault. Table 2 includes values for T100 terminal faul

42、t and out-of-phase test conditions, while Table 3 includes values for T100, T60, T30, and T10 terminal faults. Table 4This table presents the preferred capacitance current switching ratings for Class S1 circuit breakers applied to capacitance switching classes C0, C1, and C2, in accordance with IEEE

43、 Std C37.09a-2005 and C1 and C2 coordinated with IEEE Std C37.04a-2003 and the revised application guide IEEE Std C37.012-2005. Table 5This table is similar to new Table 1, but includes the preferred ratings for Class S2 circuit breakers, connected directly to overhead lines. In the 2000 edition, th

44、ese circuit breakers were designated as outdoor circuit breakers. The values are unchanged from the 2000 edition, except that TRV values have been transferred to new Table 6 and Table 7, and restated in the new two-parameter method representation. Table 6 and Table 7These tables contain two-paramete

45、r method TRV data reformatted in the same manner as Table 2 and Table 3, except that the short-line fault TRV values for outdoor circuit breakers are added to Table 6. The TRV values are based on an amplitude factor of 1.54 for the T100 terminal fault, as in the 2000 edition. Table 8This table prese

46、nts the preferred capacitance current switching ratings for Class S2 circuit breakers (voltage classes below 100 kV) applied to capacitance switching for classes C0, C1 and C2, in accordance with IEEE Std C37.09a-2005, and coordinated with IEEE Std C37.04a-2003 and the revised application guide IEEE

47、 Std C37.012-2005 for C1 and C2 applications, with voltages rated below 100 kV. The Capacitor Subcommittee of the IEEE PES Transmission and Distribution Committee suggested updated values. Table 9This table provides preferred ratings for outdoor circuit breakers rated 100 kV and above. It has been m

48、odified in a manner similar to Table 5, and TRV values have been transferred to new Table 10, Table 11, Table 12, and Table 13. Table 10, Table 11, Table 12, and Table 13These tables contain revised TRV requirements for circuit breakers rated 100 kV and above. Table 10 and Table 11 include values fo

49、r T100 terminal fault, short-line fault, and out-of-phase conditions using the four-parameter representation of TRV. The values in these two tables differ by the first pole to clear factor (kpp ), 1.3 for Table 10 and 1.5 for Table 11. Table 12 and Table 13 contain the corresponding values for T100, T60, T30, and T10 terminal faults, based on the four-parameter method TRV representation for T100 and T60, and the two-parameter method representation for T30 and T10 terminal fault conditions. Table 14This table presents the preferred capacitance current switching