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Studies on DC System Interconnection by Means of Superconducting Magnetic Energy Storage

Research Project

Project/Area Number 61550205
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field 電力工学
Research InstitutionUniversity of Tsukuba

Principal Investigator

OHSAWA Yasuharu  Univ. of Tsukuba, Inst. of Eng. Mechanics, Assistant Prof., 構造工学系, 講師 (80026294)

Co-Investigator(Kenkyū-buntansha) HOMMA Takuya  Univ. of Tsukuba, Inst. of Eng. Mechanics, Professor, 構造工学系, 教授 (30134208)
Project Period (FY) 1986 – 1987
Project Status Completed (Fiscal Year 1987)
Budget Amount *help
¥1,900,000 (Direct Cost: ¥1,900,000)
Fiscal Year 1987: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 1986: ¥1,500,000 (Direct Cost: ¥1,500,000)
KeywordsSuperconducting Magnetic Energy Storage / Superconducting Coil / DC System Interconnection / AC-DC Converter / 系統安定化制御 / 電力系統安定化制御
Research Abstract

1. Experimental Studies on DC System Interconnection Using Superconducting Coil ; Two sets of 3-phase thyristor AC-DC converter were composed, and a experimental DC transmission system was constructed with the superconducting coil ( L = 95 H, I_<max> = 20 A, Energy Storage Capacity = 1. kj ), which connects two distribution boards. Experiments of power absorption and release were done by means of personal computer control. The specified values of power were i) constant power, ii) switching of absorption and release with constant power, and iii) sinusoidal absorption and release. It was confirmed from the experiments that the power can be controlled from the two DC interconnected subsystems independently. It takes, however, as long as about 0.3 sec to complete one cycle of the input of measured values, the computation and the output of the control value, which puts the limit of about 0.6 Hz on the switching frequency of power absorption and rellease. It is the future problems to improve … More the control strategy and the computer programming for control.
2. Improvement of Steady-State Stability by DC System Interconnection with Superconducting Coil ; The system stabilizing effect of DC system interconnection and superconducting coil was examined regarding the steady-state stability on a sample longitudinal power system by means of the eigenvalue analysis. It was made clear from the results of the analysis that DC system interconnection fairly improves the steady-state stability, and that the energy storage capability of superconducting coil can stabilize the system further if the both converters are controlled appropriately. When there is a power flow on the interconnection line, the system from which the power flows out ( rectifier side ) is remarkably stabilized.
3. Improvement of Transient Stability ; The power swing damping effect was examined on the same sample power system as above by means of computer simulation. The disturbance assumed was a tripping of a generator. By dividing the system by DC interconnection, the disturbance on one subsystem does noto almost affect the other subsystem. The introduction of a superconducting coil can makes the power swing damping faster. Less

Report

(2 results)
  • 1987 Final Research Report Summary
  • 1986 Annual Research Report

Research Products

(14 results)

All Other

All Publications (14 results)

  • [Publications] 大澤靖治: 電気学会論文誌B分冊. 106. 355-360 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] 大澤靖治: 電気学会電力技術研究会資料. PE-86-162. 129-134 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] 大澤靖治: 電気学会電力技術研究会資料. PE-87-122. 47-52 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] 大澤靖治: 電気学会論文誌B分冊.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] 大澤靖治: 電気学会論文誌B分冊.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] 大澤靖治: 電気学会論文誌B分冊.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] OHSAWA, Yasuharu: "Stabilizing Control of Long Distance Longitudinal Power System by Superconducting Magnetic Energy Storage" Electrical Engineering in Japan. 106. 355-360 (1986)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] OHSAWA, Yasuharu: "Optimum Control and required Capacity of Superconducting Magnetic Energy Storage for Power System Stabilization" Paper of Technical Meeting on Power Engineering, I.E.E., Japan. PE-86-162. 129-134 (1986)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] OHSAWA, Yasuharu: "Reexamination of Power Swing Damping Effect of Superconducting Magnetic Energy Storage" Paper of Technical Meeting on Power Engineering, I.E.E., Japan. PE-87-122. 47-52 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] OHSAWA, Yasuharu: "Studies on Required Capacity of Superconducting Magnetic Energy Storage for System Stabilization" Electrical Engineering in Japan. contributed.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] OHSAWA, Yasuharu: "Effect of Generator Model and AVR on Power System Stabilization by Superconducting Magnetic Energy Storage" Electrical Engineering in Japan. contributed.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] 大澤靖治: 昭和62年電気学会全国大会講演論文集〔10〕. 1268-1269 (1987)

    • Related Report
      1986 Annual Research Report
  • [Publications] 本間琢也: 筑波大学理工学研究科報告.

    • Related Report
      1986 Annual Research Report
  • [Publications] 大澤靖治: 電気学会論文誌B分冊.

    • Related Report
      1986 Annual Research Report

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Published: 1987-03-30   Modified: 2016-04-21  

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