Comparison of Discharge Measurement Techniques for Small-scale Hydropower Efficiency | Chapter 10 | Current Approaches in Engineering Research and Technology Vol. 10

Hydropower plants represent a large part of the portfolio of electricity production in Romania and provide about 25% of the electricity needs. Hydropower plants equipped with Kaplan turbines are generally low-head hydropower plants. This type of hydropower plants can process a discharge of the order of tens of m³/s (Vaduri HPP, Noapteși HPP, Oești HPP or hundreds of m³/s (Strejești HPP, Câineni HPP) and generally have a low gross head of 15÷20m. On-situ determination of the efficiency of a turbine that equips a low-head hydropower plant, it is necessary to carry out some performance tests in situ by measuring the main operating parameters of the hydropower plant. Among the parameters of a hydropower plant, the parameter whose measurement poses the most difficult problems is the discharge, due to the short intaks and turbulences in the measuring section. The determination of this parameter requires a complex measurement methodology. This paper aims to present and analyze the main methods of in situ determination at low-head hydropower plants and awareness of the importance of carrying out on-site tests to determine the discharge and real operating characteristics. Based on the actual operating characteristics, the optimal operating area can be determined, and the operation of the turbine within this optimal operating area will lead to an increase in the energy production obtained by the turbine of the same volume of water.

 

Author (s) Details

 

Cristian Purece
INCDIE ICPE-CA ICEMENERG Subunit, Bucharest, Romania.

 

Please see the book here:- https://doi.org/10.9734/bpi/caert/v10/3020

A Novel Approach to Determining the Turbine Discharge at Hydropower Plants with Adduction Channel | Chapter 9 | Engineering Research: Perspectives on Recent Advances Vol. 3

Discharge is one of the most important parameters that characterize the operation of a hydroelectric power plant. Traditional methodologies determine the discharge of a high-head hydropower plant by the Gibson method, by exploring the velocity field through a penstock section (current meter method). Nevertheless, it is much more comfortable and advantageous to measure the discharge in a downstream section, at the immediately following hydropower plant, but in this case, it is necessary to know all the phenomena that occur in the tailrace channel between the two hydropower plants and to establish the measurement conditions so that the discharge estimation be within the limits imposed by the standards in force. This paper aims to determine the turbine discharge at Retezat HPP by measuring the discharge to the turbine from the HA1 in Clopotiva HPP.

 

Author (s) Details

 

Cristian Purece
INCDIE ICPE-CA ICEMENERG Subunit, Romania.

 

Eliza Tica
University Politehnica of Bucharest, Romania.

 

Florica Popa
VALAHIA University of Tarhoviste, Romania.

 

Bogdan Popa
University Politehnica of Bucharest, Romania.

 

Please see the book here:- https://doi.org/10.9734/bpi/erpra/v3/4215

Comparison of Discharge Measurement Techniques for Small-scale Hydropower Efficiency | Chapter 10 | Current Approaches in Engineering Research and Technology Vol. 10

 

Hydropower plants represent a large part of the portfolio of electricity production in Romania and provide about 25% of the electricity needs. Hydropower plants equipped with Kaplan turbines are generally low-head hydropower plants. This type of hydropower plants can process a discharge of the order of tens of m³/s (Vaduri HPP, Noapteși HPP, Oești HPP or hundreds of m³/s (Strejești HPP, Câineni HPP) and generally have a low gross head of 15÷20m. On-situ determination of the efficiency of a turbine that equips a low-head hydropower plant, it is necessary to carry out some performance tests in situ by measuring the main operating parameters of the hydropower plant. Among the parameters of a hydropower plant, the parameter whose measurement poses the most difficult problems is the discharge, due to the short intaks and turbulences in the measuring section. The determination of this parameter requires a complex measurement methodology. This paper aims to present and analyze the main methods of in situ determination at low-head hydropower plants and awareness of the importance of carrying out on-site tests to determine the discharge and real operating characteristics. Based on the actual operating characteristics, the optimal operating area can be determined, and the operation of the turbine within this optimal operating area will lead to an increase in the energy production obtained by the turbine of the same volume of water.

 

Author(s)details:-

 

Cristian Purece
INCDIE ICPE-CA ICEMENERG Subunit, Bucharest, România.

 

Please See the book here :-  https://doi.org/10.9734/bpi/caert/v10/3020