Basic Technical Specifications for Tokyo-Chubu HVDC Interconnection Project ［General Technical Specifications］ Note）The terms of this [General Technical Specifications] are subject to change according to the further study in future. Basic technical specifications for the Tokyo-Chubu HVDC Interconnection Project (expected to be brought into operation in FY 2020) are as follows at this point. AC/DC conversion：Line-commutated type Rated capacity：900MW (450MW 2units) DC voltage：±200kV Frequency：(Tokyo side) 50Hz / (Chubu side) 60Hz Telecommunication：Microwave link×2route Tokyo Electric Power Co., Inc. Chubu Electric Power Co., Inc. 1 ©Tokyo Electric Power Co., Inc. Chubu Electric Power Co., Inc. All Rights Reserved 1. Outline of Tokyo-Chubu HVDC Interconnection Project 【Increase power interchange capacity between 50Hz/60Hz areas by 900MW】 Install HVDC interconnection 900MW to be brought into operation in FY 2020. Azumi Shin-Takasegawa MinamiFukumitsu Midono Hokuriku EPCO BTB 300MW 500kV Etsumi trunk line (T-branch) Etsumi trunk line Gifu Add 900MW converter (Tokyo side) Chubu EPCO Chubu EPCO Pumped-storage power plant generator mode：2150MW pumping mode ：1850MW 500kV transmission line Azumi trunk line (partially upgraded) Tokyo EPCO Shin-Shinano HVDC line 90km Construct a new converter station (Chubu side) Tokyo EPCO FC 600MW Chubu EPCO Chushin 500kV substation 275kV substation 500kV transmission line 275kV transmission line Hokubu Takane #1 Mazegawa #1 FC・BTB AC/DC converter Hydropower station Switching station Constructed by Tokyo EPCO Constructed by Chubu EPCO 2 ©Tokyo Electric Power Co., Inc. Chubu Electric Power Co., Inc. All Rights Reserved 2-1. Equipment（at Tokyo EPCO's Shin-Shinano substation） ◇ List of Equipment Name of equipment ・Thyristor valve 450MW 2units ・Converter transformer 560MVA,154kV/87kV 2units ・DC smoothing reactor AC/DC converter ・AC harmonic filter equipment ・DC harmonic filter AC equipment Quantity 1H 2units 5th･7th 2banks,11th･13th･HP 2banks 12th(HP) 2banks ・Phase modifying equipment Leading 300Mvar，Lagging 300MVar ・DC switchgear 1set ・Step-down transformer 500MVA,500kV/154kV/66kV 2units ・500kV･154kV･66kV AC switchgear 500kV 2bays,154kV 9bays,66kV 2bays ◇ Circuit Configuration 154kV AC switchgear CB AC harmonic filter （5th, 7th） CB Phase modifying equipment CB DC switchgear DC smoothing reactor AC harmonic filter （11th, 13th, HP） LS CB CB DC harmonic filter CB 500kV AC switchgear Step-down transformer CB Converter transformer To 60Hz side Thyristor valve LS Converter transformer DC harmonic filter CB Step-down transformer CB LS CB AC harmonic filter （11th, 13th, HP） CB CB CB DC smoothing reactor AC harmonic filter （5th, 7th） Phase modifying equipment ©Tokyo Electric Power Co., Inc. Chubu Electric Power Co., Inc. All Rights Reserved 3 2-2. Equipment（at Chubu EPCO's new converter station） ◇ List of Equipment Name of equipment Quantity ・Thyristor valve 450MW 2units ・Converter transformer 560MVA, 154kV/87kV 2units ・DC smoothing reactor AC/DC converter ・AC harmonic filter equipment ・DC harmonic filter 5th･7th 2banks, 11th･13th･HP 2banks 12th(HP) 2banks ・Phase modifying equipment SC 60MVA 6banks，ShR 80MVA 4units ・DC switchgear 1set ・Step-down transformer 500MVA, 500kV/154kV/77kV 2units ・500kV･154kV･77kV AC switchgear 500kV 5bays, 154kV 9bays, 77kV 2bays ◇ Circuit Configuration Phase modifying equipment 500kV AC switchgear CB CB AC harmonic filter （11th, 13th, HP） CB AC harmonic filter （5th, 7th） DC smoothing reactor DC switchgear DS CB Transmission line #1 154kV AC switchgear CB AC equipment 1H 2units CB DC harmonic filter CB Step-down transformer CB CB Converter transformer Step-down transformer DS To 50Hz side DC harmonic filter CB CB CB CB Transmission line #2 CB Thyristor valve Converter transformer Phase modifying equipment CB AC harmonic filter （5th, 7th） CB AC harmonic filter （11th, 13th, HP） DS DC smoothing reactor ©Tokyo Electric Power Co., Inc. Chubu Electric Power Co., Inc. All Rights Reserved 4 3-1. Tentative Layout（of Tokyo EPCO's Shin-Shinano substation） 5 ©Tokyo Electric Power Co., Inc. Chubu Electric Power Co., Inc. All Rights Reserved 3-2. Tentative Layout（of Chubu EPCO's new converter station） 250m AC 500kV Etsumi trunk line Main building AC equipment (Switchgear・Transformer) AC500/154/77kV Space for temporary works and future replacement AC equipment (Switchgear) AC154kV to Tokyo EPCO's Shin-Shinano S/S Entrance of converter station AC77kV AC equipment Phase modifying equipment DC equipment AC154kV Transformer Thyristor valve Switchgear DC smoothing reactor DC harmonic filter AC equipment (AC harmonic filter) DC 200kV AC154/87kV DC200kV N 6 ©Tokyo Electric Power Co., Inc. Chubu Electric Power Co., Inc. All Rights Reserved 4-1. Scope of Work （for Tokyo EPCO's Shin-Shinano substation） ◎At this stage we haven't decided how to combine and order the items. Item AC/DC converter System design Specification Rated capacity 900MW(450MW 2units) Rated voltage／ Rated current ±200kV／2250A Frequency 50Hz Control method Target availability Thyristor valve Converter transformer DC smoothing reactor AC harmonic filter 12 phase collective control More than 97% at equivalent bipolar outage time※ Insulation Indoor air insulated Rated voltage／ Rated current 200kV／2250A Capacity 560MVA （280MVA 2stages） Rated voltage 154kV／87kV Connection Y-Y, Y-D Inductance 1H Rated voltage／ Rated current 200kV／2250A Rated voltage 154kV Branch configuration 5th,7th,11th,13th,HP Item DC harmonic filter Phase modifying equipment Specification Rated voltage 200kV Branch configuration 12th（HP） Leading Capacity 300MVar Lagging Capacity 300MVar Insulation (outdoor) air insulated Rated voltage 200kV Capacity 500MVA Rated voltage 500kV/154kV/66kV Connection Y-Y-D Insulation SF6 gas insulated Insulation SF6 gas insulated Insulation SF6 gas insulated DC switchgear Step-down transformer AC switchgear （500kV） AC switchgear （154kV） AC switchgear （66kV） ※Note）Equivalent bipolar outage time：Interrupted capacity and outage time are converted to equivalent outage time for bipolar capacity (ex. Monopole 450MW×2days ⇒ Bipolar 900MW×1day) ©Tokyo Electric Power Co., Inc. Chubu Electric Power Co., Inc. All Rights Reserved 7 4-2. Scope of Work （for Chubu EPCO's new converter station） ◎At this stage we haven't decided how to combine and order the items. Item AC/DC converter System design Specification Rated capacity 900MW(450MW 2units) Rated voltage／ Rated current ±200kV／2250A Frequency 60Hz Control method Target availability Insulation Thyristor valve Converter transformer AC harmonic filter Indoor air insulated Rated voltage／ Rated current 200kV／2250A Capacity 560MVA （280MVA 2stages） Rated voltage Connection DC smoothing reactor 12 phase collective control More than 97% at equivalent bipolar outage time※ Inductance Item DC harmonic filter Phase modifying equipment （77kVSC） Phase modifying equipment （77kVShR） Specification Rated voltage 200kV Branch configuration 12th（HP） Capacity 60MVA 6banks Capacity 80MVA 4units Insulation SF6 gas insulated Rated voltage 200kV Capacity 500MVA Rated voltage 500kV/154kV/77kV Connection Y-Y-D Insulation SF6 gas insulated Insulation SF6 gas insulated Insulation SF6 gas insulated DC switchgear Step-down transformer 154kV／87kV Y-Y, Y-D 1H Rated voltage／ Rated current 200kV／2250A Rated voltage 154kV Branch configuration 5th,7th,11th,13th,HP AC switchgear （500kV） AC switchgear （154kV） AC switchgear （77kV） ※Note）Equivalent bipolar outage time：Interrupted capacity and outage time are converted to equivalent outage time for bipolar capacity (ex. Monopole 450MW×2days ⇒ Bipolar 900MW×1day) 8 ©Tokyo Electric Power Co., Inc. Chubu Electric Power Co., Inc. All Rights Reserved
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