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Introduction of Substation and Power Distribution Facilities and Electrical

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Introduction of Substation and Power Distribution Facilities and Electrical ［ Introduction of Substation Equipment and Delivered Facilities ］ Noriyuki Eto, Introduction of Substation and Keisuke Morito Power Distribution Facilities and Electrical Train Line Facility for Hokuriku Shinkansen (Between Nagano Station and Kanazawa Station) Keywords Construction project, Feeder control, Power distribution control, Global environment, Different frequency power supplies Hokuriku Shinkansen for linking Kanazawa Station with Tokyo Station is a Abstract projected Shinkansen Line Plan. Part of the route between Tokyo Station and Nagano Station already began com- mercial operation in 1997 by the name of Nagano Shinkansen. The section between Nagano Station and Kanazawa Station is an extended part of the overall section. Hokuriku Shinkansen (between Nagano Station and Kanazawa Station) was inaugurated in the spring of 2015. As a result, the required time to travel between Tokyo Station and Kanazawa Station is reduced from 4 hours to 2.5 hours. The section between Kanazawa Station and Tsuruga Station is scheduled to be inau- gurated in an estimated 10 years from now. Major electrical facilities we delivered involve substations for feeders and railway track facilities. ( ) 1 Preface Post SP , Shin-Kuwadori Sub-Sectioning Post (SSP), and the Shin-Nou SSP. The length of the construction site for Hokuriku The Shin-Kurobe SS receives utility power Shinkansen (between Nagano Station and Kanazawa through a 2-circuit 154kV transmission line from Station) is about 228km in track length. For this con- Hokuriku Electric Power Company and the received struction project, we manufactured and delivered power is stepped down to single-phase 2-circuit substation facilities for feeder systems, power distri- 60kV by a Scott-connection transformer. The 60kV bution facilities, electrical train line facilities, and single-phase power is converted into single-phase associated equipment. 30kV through an auto-transformer. The resultant Fig. 1 shows the location of power transmis- power is fed to commercial train cars in operation. sion and distribution substation facilities for Hokuriku Fig. 2 shows a main-circuit connection diagram for Shinkansen. In the feeder substation facilities, there the Shin-Kurobe SS. is a boundary section where two different frequen- cies of 50Hz and 60Hz are used in power supplies. 2.1 Power Receiving Circuit-Breaker (CB) It was a big challenge to solve the frequency differ- We delivered a 168kV Gas-insulated Circuit- ence of the facilities and build a unique system. This Breaker (GCB) to the Shin-Kurobe SS. Since the paper introduces how we face such challenges and GCB is adopted, features of compactness and light- provides the outline of the supplied facilities. ness can be attained. Table 1 shows the ratings and Fig. 3 shows an external appearance of a 168kV GCB. 2 Feeder Substation Facilities 2.2 Feeder Transformer The project sites are at four posts: the Shin- A 70MVA Scott-connection transformer was Kurobe Substation (SS), Shin-Takada Sectioning delivered to the Shin-Kurobe SS. The major features MEIDEN REVIEW Series No.165 2015 No.3 17 Longitu- dinal section profile of Iiyama St. the route Work start point Starting at Takasaki 147km330m Starting at Takasaki 125km385m Niigata Niigata Prefecture Toyama Prefecture Toyama Prefecture Ishikawa Prefecture Nagano Nagano Prefecture Niigata Prefecture Joetsu-Myoko St. Itoigawa St. Kurobe-Unazuki Onsen St. Toyama St. Shin-Takaoka St. Kanazawa St. Starting at Takasaki 176km880m Starting at Takasaki 253km130m Starting at Takasaki 286km900m Starting at Takasaki 345km460m Starting at Takasaki 213km880m Starting at Takasaki 305km800m Hakusan General 400m Train Base Starting at Takasaki 357km400m 300m 200m 100m 0m DL 50m =－ 120km 130km 140km 150km 160km 170km 180km 190km 200km 210km 220km 230km 240km 250km 260km 270km 280km 290km 300km 310km 320km 330km 340km 350km 360km Power Kita-Matsumoto transmis- CHUBU Electric Power Co., Inc. Tohoku Electric Power Co., Inc. Hokuriku Electric Power Co. sion system Shinano Toshin Shin- Funabashi Toyama Shin- Toshin Hokushin line Nishi- Shin- Kita- Shin- diagram Shinano Toshin Joetsu line line Kita-Kanazawa Komatsu line line 275kV 275kV Joetsu Ishisone Otokoro Funabashi 154kV Toyama 154kV Toyama line 154kV Kanazawa 154kV Komatsu Shin-Hokushin : Power com- Kurobe pany sub- Shin-Hokushin Nishi-Joetsu Omi Line Otokorogawa Eguchi Funabashi Eguchi line Kasama station Shin- line Yoshida line 77kV line 154kV 154kV line Aimoto Kurobe line 154kV : Power 154kV 154kV 154kV company Eguchi Minami-Fukuoka Minami-Fukuoka line switching Yoshida Shin-Aimoto Minami- yard 275kV 154kV Kurobe line 154kV Kanazawa 154kV 154kV 154kV 154kV 154kV JR JR Hakusan Feeder Shin- East West General Nagano Train Shin-Takaoka Shin-Hakusann system Sakaki Shin-Nagano SS Shin-Joetsu SS Shin-Kajiyashiki Shin-Kurobe SS SS SS Train Base SS Base SS SS diagram Shin- Shin- Shin- Shin- Shin- SSP Shin- Shin- Shin- Shin- Shin- Shin- Shin- Shin- Shin- Shin- Shin- Shin- Nagano Iwai Myoko Itakura Kuwadori Nou Itoigawa Sakaigawa Asahi Uotsu Mizuhashi Toyama Imizu Oyabe Tsubata Kanazawa : Substation Yashiro SSP Amori SSP Hakusan (SS) Train Base SSP SSP SSP SSP SSP SP ATP SSP SSP SSP SP SSP SSP SP SSP General Train : Sectioning Base Shin-Akanuma Shin-Takada ) Post (SP) ) SP SP : Sub-Sec- tioning Post (SSP) : Transformer Post (ATP) Starting at Takasaki : Discon- ( Starting at Kanazawa necting ( switch for tunnel 179km545m 90km300m 104km030m 114km100m 126km150m 126km345m 131km900m 146km005m 153km800m 158km870m 165km050m 170km887m 193km980m 204km979m 224km245m 230km115m 236km701m 181km845m 189km160m 198km516m 210km525m 219km127m 234km852m 242km667m 255km148m 266km013m 278km844m 292km491m 301km525m 311km653m 321km554m 332km397m 343km212m disaster 356km348m prevention AT interval 13.730 10.070 12.050 5.555 14.105 12.865 12.017 8.658 7.315 9.356 12.009 8.602 15.725 7.815 12.481 10.865 12.831 13.647 9.034 10.128 9.901 10.843 10.815 13.136 357km808m 12km348m 0.195 2.300 Feeder 36.045 5.555 23.951 1.460 distance 47.645 37.282 36.021 37.343 19.162 20.744 2.300 Substation 41.600 49.945 73.303 56.505 44.695 1.460 interval Frequency 60Hz 50Hz 60Hz Source: Japan Railway Construction, Transport and Technology Agency (JRTT) Fig. 1 Location of Power Transmission and Distribution Substation Facilities for Hokuriku Shinkansen Power transmission system diagram and feeder system diagram are shown for Hokuriku Shinkansen (between Nagano Station and Kanazawa Station). Our supplied posts are the Shin-Kurobe SS, the Shin-Takada SP, the Shin-Kuwadori SSP, and the Shin-Nou SSP. of this transformer are described below. recovery of gas and maintenance for current break- (1) Since the transformer main body was designed ing parts, the life cycle cost is also reduced. Table 3 for a low-noise configuration, it does not require a shows the ratings and Fig. 5 shows an external building for its transformer noise. As a result, site appearance of the 72/36kV eco-tank type VCB. construction work was very simple. (2) Thanks to the progress of analytical technolo- 2.4 Changeover Switch gies for electrical field intensity measurements, it A solenoid-operated changeover switch of the was possible to substantially attain compactness. low operating current type was delivered. A high (3) Since the neutral point of the Scott-connection withstand voltage type was delivered to the post transformer was fully insulated, it was possible to where the different-frequency boundary section is omit the Point-M surge arresters. situated. This program applies to the posts where Table 2 shows the ratings and Fig. 4 shows an the Shin-Takada SP and the Shin-Itoigawa SP are external appearance of the 70MVA Scott-connection located. Table 4 shows the ratings and Fig. 6 shows transformer. the 36kV changeover switch. 2.3 Feeder CB 2.5 Track Feeder Control Switchgear An ecological tank-type Vacuum Circuit-Breaker For each post, we installed a functionally pack- (VCB) has been introduced. This type is eco-friendly aged control switchgear for the railway. Fig. 7 shows because dry air is used as the insulation medium. the monitoring and control panel and Fig. 8 shows Since this is SF6 gas-free, it contributes to Climate the system configuration diagram of the Shin- Control. Kurobe SS. The major features of the switchgear In addition, since there is no need for the are specified below. 18 MEIDEN REVIEW Series No.165 2015 No.3 Incoming power No.2 (Hokuriku Electric Power Co.) Incoming power No.1 (Hokuriku Electric Power Co.) 3φ 154kV 60Hz 3φ 154kV 60Hz R S T 154kV 110V 110V Dynamic voltage compensator R S T 154kV 110V 110V CVT×3 CVTx3 3 3 3 3 3 3 200/200VA 2 1T/3G VTT 200/200VA×2 1T/3G VTT × Telemetry Telemetry (27R2) (27R1) LA×3 VTT VTT 8A RLE2 － LA 3 8A－RLE1 196kV 89RL2 U < × 89RL1 U < 196kV 10kA (152L) 3 (151L) 3 M M 10kA M M 50μF 168kV 168kV R R R 89RLE2 50μF R R R 89RLE1 1200A (51T2) ( ) 1200A (51T1) (152LE) 8A－RL2 CTT 151LE 8A－RL1 CTT (25kA) K (25kA) K C C C 168kV I > C C C 168kV I > ( ) BCTx3 (25kA) BCT×3 (51GR2) 3 25kA (51GR1) 3 600/5A 1PS L CTT Id I> Id I> 600/5A 1PS L CTT Id I> Id I> 40VA n>20 I > 40VA n>20 I > (87T2M) (87T2T) (87T1M) (87T1T) 52R2 GCB (152) (63G1R2) (63G1R1) 52R1 GCB (151) 168kV 25kA p p 168kV 25kA 48R2 1200A Electromagnetic operation 48R1 1200A Electromagnetic operation (63G2R2) 3-cycle R (63G2R1) 3-cycle R CTT CTT p 8A RCB2 K p 8A RCB1 K － BCT×3 Telemetry － BCT×3 Telemetry 600/5A 1PS AC100V 600/5A 1PS AC100V 40VA n>20 L 40VA n>20 L Pulse CT Pulse CT Pulse Pulse VCT Wh DMW pickup To remote control equipment VCT Wh DMW pickup To
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