Numerical and field tests of hydraulic transients at Piva power plant

27th IAHR Symposium on Hydraulic Machinery and Systems

Giljen, Z.^1

Business and Technical Development Direc., Sector for New Projects, Montenegro Electric, Vuk Karadi Street no. 2, Niki, Montenegro^1

关键词: Field investigation;    Governor control;    Hydraulic conditions;    Hydraulic transients;    Making decision;    Method of characteristics;    Numerical results;    Numerical tests;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/22/4/042010/pdf
DOI  :  10.1088/1755-1315/22/4/042010

来源: IOP

【 摘 要 】

In 2009, a sophisticated field investigation was undertaken and later, in 2011, numerical tests were completed, on all three turbine units at the Piva hydroelectric power plant. These tests were made in order to assist in making decisions about the necessary scope of the reconstruction and modernisation of the Piva hydroelectric power plant, a plant originally constructed in the mid-1970s. More specifically, the investigation included several hydraulic conditions including both the start-up and stopping of each unit, load rejection under governor control from different initial powers, as well as emergency shut-down. Numerical results were obtained using the method of characteristics in a representation that included the full flow system and the characteristics of each associated Francis turbine. The impact of load rejection and emergency shut-down on the penstock pressure and turbine speed changes are reported and numerical and experimental results are compared, showing close agreement.