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Fundamental Study on Comprehensive Multi-Purpose Utilization of Small Hydropower

Research Project

Project/Area Number 10450074
Research Category

Grant-in-Aid for Scientific Research (B).

Allocation TypeSingle-year Grants
Section一般
Research Field Fluid engineering
Research InstitutionYokohama National University

Principal Investigator

KUROKAWA Junichi  Faculty of Engineering, Yokohama National University, Professor, 工学部, 教授 (40017976)

Co-Investigator(Kenkyū-buntansha) IMAMURA Hiroshi  Faculty of Engineering, Yokohama National University, Research Associate, 工学部, 助手 (30303077)
MATSUI Jun  Faculty of Engineering, Yokohama National University, Assistant Professor, 工学部, 助教授 (40251756)
Project Period (FY) 1998 – 2000
Project Status Completed (Fiscal Year 2000)
Budget Amount *help
¥14,000,000 (Direct Cost: ¥14,000,000)
Fiscal Year 2000: ¥3,200,000 (Direct Cost: ¥3,200,000)
Fiscal Year 1999: ¥3,400,000 (Direct Cost: ¥3,400,000)
Fiscal Year 1998: ¥7,400,000 (Direct Cost: ¥7,400,000)
KeywordsTurbomachinery / Small Hydropower / Cross-flow Turbine / Variable Head / Variable Flow Rate / Variable Speed Control / Simplified Structure / クロスフロー水車 / 変落差・変流量特性 / マイクロ水力エネルギ
Research Abstract

Purpose of this study is to propose an approach to comprehensive multi-purpose utilization of small hydropower and to provide the most appropriate hydropower recovery system and the optimal control for each purpose of utilizing small hydropower.
In the research and investigation period for 1998-1999, a cross-flow turbine that has simple construction and low fabrication cost has been selected as the most appropriate water turbine for medium and low head small hydropower and a thorough experimental investigation of the turbine was made. The performance characteristics of the turbine was investigated by varying head and flow, and for the purpose of simplifying the structure of the turbine, a guide vane in the nozzle inside was removed and the shape of the nozzle was modified optimally by using a numerical simulation. And for each purpose of utilizing small hydropower, such as generating electric power in an isolated site or connecting to power system etc., the most appropriate power genera … More ting system and the optimal operation method have been identified.
Because the guide vane of the turbine is removed, at sometime runaway speed phenomena may happen. Therefore in the year of 2000, the runaway speed characteristics of the turbine were firstly investigated, and a new air supply method that supplies air directly into the runner inside was proposed. Using this new air supply method, the turbine structure is more simplified by compacting the runner chamber of the turbine. As a result, the size of the turbine was remarkably reduced and in the meanwhile the maximum turbine efficiency was improved by 1.3%, and a 9% efficiency improvement was obtained in the high rotational speed range.
Furthermore, in order to utilize micro hydropower resource that has variable head more effectively, two variable speed micro hydropower systems that consist of low-cost commercial power electronic elements have been developed. One is composed of a synchronous generator and an electronic load governor for the purpose of applying to an isolated operation, and the other is composed of an induction generator for the purpose of connecting to power system. The experimental results showed that turbine performance and total system efficiency at off-design heads are improved much by using these systems. The performance characteristics of the simplified cross-flow turbine under variable head were also determined experimentally.
From the above results, the work of the study can contribute to effective utilization of small hydropower. Less

Report

(4 results)
  • 2000 Annual Research Report   Final Research Report Summary
  • 1999 Annual Research Report
  • 1998 Annual Research Report
  • Research Products

    (12 results)

All Other

All Publications (12 results)

  • [Publications] 趙林虎,黒川淳一,松井純,今村博: "貫流水車のマイクロ水力発電への適用(構造の簡素化、及び無拘束速度特性について)"日本機械学会東海支部第50期総会講演会講演論文集. No.013-1. 377-378 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 趙林虎,黒川淳一,松井純,今村博,塚本直史,大和昌一: "可変速マイクロ水力発電システムの実用化に関する研究"日本機械学会流体工学部門講演会講演論文集. (CD-ROM). (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 趙林虎,黒川淳一,松井純,今村博: "低落差貫流水車のマイクロ水力発電への適用(水車構造の簡素化と性能向上)"日本機械学会論文集(B編). (掲載号未定). (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 趙林虎,黒川淳一,松井純,今村博,塚本直史,大和昌一: "可変マイクロ水力発電システムの実用化に関する研究"ターボ機械. (掲載号未定). (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] L.Zhao, J.Kurokawa, J.Matsui, H.Imamura and H.Kamito: "An Application of Cross-Flow Turbine to Micro Hydroelectric Generation (Investigation on Variable Head-Flow Characteristics)"Proc.of JSME '99 Conf.. No.99-1. 213-214 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] L.Zhao, J.Kurokawa, J.Matsui, and H.Imamura: "An Application of Cross-Flow Turbine to Micro Hydroelectric Generation (Investigation on Simplification of the Structure and Runaway Speed Characteristics)"Proc.of 50th JSME Tokai Division Conf.. No.013-1. 377-378 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] L.Zhao, J.Kurokawa, J.Matsui, and H.Imamura, T.Tsukamoto and S.Yamato: "A Study on Utilization of Variable Speed Micro-Hydropower System"Proc.of Fluid Eng.Division of JSME Conf.. (CD-ROM). (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] L.Zhao, J.Kurokawa, J.Matsui, and H.Imamura: "Application of Low Head Cross-Flow Turbine to Micro-Hydropower (Simplification of the Turbine Structure and Performance Improvement)"Jour.of JSME Series B. (to be published). (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] L.Zhao, J.Kurokawa, J.Matsui, H.Imamura, T.Tsukamoto and S.Yamato: "A Study on Utilization of Variable Speed Micro-Hydropower System"Jour.of Turbomachinery. (to be published). (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 趙林虎,黒川淳一,松井純,今村博: "貫流水車のマイクロ水力発電への適用(構造の簡素化、及び無拘束速度特性について)"日本機械学会東海支部第50期総会講演会講演論文集. No.013-1. 377-378 (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] 趙林虎,黒川淳一,松井純,今村博,神戸秀方: "貫流水車のマイクロ水力発電への適用(変落差,変流量特性について)"日本機械学会1999年年次大会講演会講演論文集. Vol.IV. 213-214 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 趙林虎、黒川淳一、松井純、今村博、神戸秀方: "貫流水車のマイクロ水力発電への適用(変落差、変流量特性について)" 機械学会1999年年次大会講演会. (1999)

    • Related Report
      1998 Annual Research Report

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Published: 1998-04-01   Modified: 2016-04-21  

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