1 0 0 0 OA 交流電気鉄道用50/60Hz異周波混触保護継電器の開発
- 著者
- 長谷 伸一 持永 芳文 八木 英行 江本 政春
- 出版者
- The Institute of Electrical Engineers of Japan
- 雑誌
- 電気学会論文誌D(産業応用部門誌) (ISSN:09136339)
- 巻号頁・発行日
- vol.118, no.7-8, pp.930-936, 1998-07-01 (Released:2008-12-19)
- 参考文献数
- 8
Takasaki-Nagano section, a part of Hokuriku Shinkansen was opened in October, 1997, just before Nagano Winter Olympics. Hokuriku Shinkansen has been electrified by 30kV a. c. commercial frequency AT feeding system.As for the commercial frequency, Japan is divided into two zones: the western part of Japan is a 60Hz zone and its eastern part is a 50Hz zone. Two different power frequencies exist in Hokuriku Shinkansen which passes power frequency borders between different electric power companies. Therefore, in case of a contact fault between two different power frequencies, a beat-formed large fault current will flow, which should be immediately detected and cut off.At present, a distance relay and an AC ΔI type relay are used as protective relays for a feeding circuit of Shinkansen lines. However, it was experimentally made clear that those relays do not operate by a beat-formed fault current which appears in the case of a contact fault between two different power frequencies. For this reason, we have developed and put to practical use a protective relay for a contact fault between two different frequencies, which operates by detecting 55Hz component peculiar to the current caused by the contact fault and also detecting power frequency of an opponent traction substation.They have been installed at a frequency-bordered sectioning post and at traction substations which sandwich the sectioning post.
1 0 0 0 交流電気鉄道用50/60Hz異周波混触保護継電器の開発
- 著者
- 長谷 伸一 持永 芳文 八木 英行 江本 政春
- 出版者
- 一般社団法人 電気学会
- 雑誌
- 電気学会論文誌. D, 産業応用部門誌 = The transactions of the Institute of Electrical Engineers of Japan. D, A publication of Industry Applications Society (ISSN:09136339)
- 巻号頁・発行日
- vol.118, no.7, pp.930-936, 1998-07
- 参考文献数
- 8
- 被引用文献数
- 2
Takasaki-Nagano section, a part of Hokuriku Shinkansen was opened in October, 1997, just before Nagano Winter Olympics. Hokuriku Shinkansen has been electrified by 30kV a. c. commercial frequency AT feeding system.<br>As for the commercial frequency, Japan is divided into two zones: the western part of Japan is a 60Hz zone and its eastern part is a 50Hz zone. Two different power frequencies exist in Hokuriku Shinkansen which passes power frequency borders between different electric power companies. Therefore, in case of a contact fault between two different power frequencies, a beat-formed large fault current will flow, which should be immediately detected and cut off.<br>At present, a distance relay and an AC ΔI type relay are used as protective relays for a feeding circuit of Shinkansen lines. However, it was experimentally made clear that those relays do not operate by a beat-formed fault current which appears in the case of a contact fault between two different power frequencies. For this reason, we have developed and put to practical use a protective relay for a contact fault between two different frequencies, which operates by detecting 55Hz component peculiar to the current caused by the contact fault and also detecting power frequency of an opponent traction substation.<br>They have been installed at a frequency-bordered sectioning post and at traction substations which sandwich the sectioning post.