PUB‐NLH‐159 Island Interconnected System Supply Issues and Power Outages Page 1 of 1 1 Q. Please provide a status report on recommendation #1 in section 4.3 of the report 2 titled "January 11, 2013 ‐ Winter Storm Events", filed as Appendix D to the “January 3 11, 2013 Power System Outage Report”, filed with Hydro’s March 24, 2014 Report 4 to the Board that Hydro should develop a schedule for "exercising" its 230kV circuit 5 breakers, including whether: 6 (i) Has Hydro developed a plan to exercise its 230kV breakers; 7 (ii) Has Hydro actually exercised any 230kV circuit breakers (which ones); 8 and (iii) Does Hydro plan to exercise its 230kV breakers in 2014? 9 10 11 12 A. In 2013, Hydro developed a plan to exercise its 230 kV breakers both remotely from 13 the Energy Control Centre (ECC) and locally from the station. (See PUB‐NLH‐159 14 Attachment 1 for an example of a preventative maintenance (PM) model work 15 order set up to exercise breakers at Holyrood Terminal Station.) An annual, time 16 based PM program was set up in 2013. All 230 kV breakers on Hydro’s system will 17 be exercised by October 31, 2014. (See PUB‐NLH‐159 Attachment 2 for a list of 230 18 kV breakers on Hydro’s system.) In addition, Hydro has reviewed the normal 19 operations of these 230 kV breakers to determine which are dormant (i.e., have not 20 been operated within approximately one year) by reviewing Energy Management 21 System (EMS) data from March 1, 2013 to March 31, 2014. Of the 84 230 kV 22 breakers on the Hydro system, 79 of those breakers had been successfully operated 23 in that period. There were only five breakers that had not been operated in that 24 period, namely one breaker at Vale Terminal Station, two at Stony Brook Terminal 25 Station, one at Deer Lake Terminal Station and one at Massey Drive Terminal 26 Station. These will be a priority focus within the 2014 PM exercise program. PUB-NLH-159, Attachment 1 Page 1 of 1, Isl Int Sys Power Outages PUB‐NLH‐159, Attachment 2 Page 1 of 2, Isl Int Sys Power Outages 230 kV Circuit Breakers LOCATION BBK TS BBK TS BBK TS BBK TS BDE TS1 BDE TS1 BDE TS1 BDE TS1 BDE TS1 BDE TS1 BDE TS1 BDE TS1 BDE TS1 BDE TS1 BDE TS1 BDE TS1 BDE TS1 BDE TS2 BDE TS2 BDE TS2 BDE TS2 BDE TS2 BUC TS BUC TS BUC TS BUC TS BUCTS CAT TS CAT TS CBC TS CBCTS CBCTS CBCTS CBCTS DLK TS DLK TS HRD TS HRD TS HRD TS HRD TS HRD TS HRD TS NLH ID B1L11 B1L09 L09L33 L11L33 B1T2 B2T4 B3T6 B2T3 B1T1 B4B5 B3T5 B1B2 B6B10 B2B3 B5B6 B3B4 B1B10 B9L34 B9B10 B11L06 B10B11 L06L34 L05L33 L28L32 B1L05 B1L28 L32L33 L47T1 L47T2 B1B2 B1C1 B1C2 B2C3 B2C4 B3L47 B3L48 B2L42 B2B11 B1B11 B12L42 B1L17 B12L17 TYPE Air Blast Air Blast Air Blast Air Blast Air Blast Air Blast Air Blast Air Blast Air Blast Air Blast Air Blast Air Blast Air Blast Air Blast Air Blast Air Blast Air Blast SF6 SF6 SF6 SF6 SF6 Air Blast Air Blast Air Blast Air Blast SF6 SF6 SF6 SF6 SF6 SF6 SF6 SF6 SF6 SF6 Air Blast Air Blast Air Blast Air Blast Air Blast Air Blast MODEL DLF 245 nc2 DLF 245 nc2 DLF 245 nc2 DLF 245 nc2 DCVF 245 mc6 DCVF 245 mc6 DCVF 245 mc6 DCVF 245 mc6 DCVF 245 mc6 DCVF 245 mc6 DCVF 245 mc6 DCVF 245 mc6 DCVF 245 mc6 DCVF 245 mc6 DCVF 245 mc6 DCVF 245 mc6 DCVF 245 mc6 ELF 245 n2s 3AQ1 3AQ1 3AQ1 3AQ1 DLF 245 nc2 DLF 245 nc2 DLF 245 nc2 DLF 245 nc2 ELF 245 n2s 200‐SFMT‐40A 200‐SFMT‐40A HGF 114/1A DT1‐245 F3 DT1‐245 F3 DT1‐245 F3 DT1‐245 F3 HGF 114/1A HGF 114/1A DLF 245 nc2 DLF 245 nc2 DLF 245 nc2 DLF 245 nc2 DLF 245 nc2 DLF 245 nc2 YEAR BUILT OPERATING VOLT (kV) 1971 1971 1973 1978 1966 1968 1966 1966 1966 1964 1969 1966 1968 1968 1968 1972 1975 1981 1990 1990 1990 1990 1973 1972 1973 1975 1980 1984 1984 1997 2010 2010 2010 2010 1983 1983 1973 1974 1974 1978 1973 1973 230 230 230 230 230 230 230 230 230 230 230 230 230 230 230 230 230 230 230 230 230 230 230 230 230 230 230 230 230 230 230 230 230 230 230 230 230 230 230 230 230 230 PUB‐NLH‐159, Attachment 2 Page 2 of 2, Isl Int Sys Power Outages 230 kV Circuit Breakers LOCATION HRD TS HRD TS HRD TS HRD TS HRD TS HRD TS HWD TS HWD TS HWD TS HWD TS MDR TS MDR TS MDR TS OPD TS OPD TS SSD TS SSD TS SSD TS SSD TS SSD TS STB TS STB TS STB TS STB TS STB TS STB TS STB TS SVL TS USL TS USLTS VBNTS VBNTS WAV TS WAV TS WAV TS WAV TS WAV TS WAV TS WAV TS WAV TS WAV TS OPERATING VOLT YEAR BUILT (kV) B3L18 B12B15 B3B13 B12L18 B13B15 B12T10 B1L01 B2L42 B1B2 TYPE Air Blast Air Blast Air Blast SF6 SF6 SF6 Air Blast SF6 SF6 DLF 245 nc2 DLF 245 nc2 DLF 245 nc2 ELF 245 n2s ELF 245 n2s 3AQ1 DLF 245 nc2 ELF 245 n2s BHG 114 1978 1978 1978 1981 1981 1990 1972 1981 1993 230 230 230 230 230 230 230 230 230 B1L36 SF6 DT1‐245 F3 2013 230 B5L11 B1L28 B1L48 B1L18 B1L36 B1L03 L02L07 B1L02 L06L07 L03L06 B1L31 L05L35 B1L35 B2L04 L05L31 B1L32 L04L32 B1L09 L34L63 L34T1 Air Blast Air Blast SF6 Air Blast Air Blast Air Blast Air Blast Air Blast Air Blast SF6 Air Blast Air Blast Air Blast Air Blast Air Blast Air Blast SF6 Circuit Switcher SF6 SF6 SF6 SF6 Air Blast Air Blast Air Blast Air Blast Air Blast Circuit Switcher Circuit Switcher SF6 Air Blast DCVF 245 mc6 DCVF 245 mc6 HGF 114/1A DCVF 245 mc6 DCVF 245 mc6 DCVF 245 mc6 DCVF 245 mc6 DCVF 245 mc6 DCVF 245 mc6 DT1‐245 F3 DCVF 245 mc6 DCVF 245 mc6 DCF 245 mc6 DCVF 245 mc6 DCF 245 mc6 DCVF 245 mc6 3AQ1 1967 1966 1983 1969 1969 1966 1966 1966 1968 2012 1966 1966 1966 1966 1969 1968 1990 1983 2002 1981 2011 2011 1968 1968 1969 1969 1969 1983 1983 1990 1977 230 230 230 230 230 230 230 230 230 230 230 230 230 230 230 230 230 230 230 230 230 230 230 230 230 230 230 230 230 230 230 NLH ID B1T1 B1T2 B1L37 B1L08 L03L17 B1L17 L01L03 B1T1 B1T2 L01L37 B1B3 MODEL Mark III HGF 1014IPO ELF 245 nc2s DT1‐245 F3 DT1‐245 F3 DCVF 245 mc6 DCVF 245 mc6 DCVF 245 mc6 DCVF 245 mc6 DCVF 245 mc6 Mark III Mark III 3AQ1 DLF 245 nc4
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