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Getting down with VLH turbine R&D
28 May, 2008
A new turbine concept is improving the economic feasibility of very low head (VLH) hydro developments, and lowering fish mortality rates
Runner development for specified characteristic discharge, output
30 April, 2008
Adarsh Swaroop and S M Ramanathan present details on the development of a pump turbine runner for a specified characteristic discharge in pump mode and power output in turbine mode
The effects of surface roughness
15 May, 2007
P Krishnamachar and Arpad Fay investigate the effect of surface roughness on losses and performance of hydraulic turbines
IEC meeting to be held in Vancouver
13 February, 2007
The International Electrotechnical Commission - Technical Committee 4 (Hydraulic Turbines) will hold its next Plenary Meeting in Vancouver, Canada from 10-13 September 2007.
Establishing connections at Ems barrage
15 November, 2005
Low-voltage switching devices play a key role at the Ems Barrage in Germany. Holger Sönnichsen reports
Sevan-Hrazdan cascade figures released
14 October, 2005
The Sevan-Hrazdan Cascade in Armenia generated 475MkWh of hydroelectricity in the first nine months of this year, unchanged as compared with the same period in 2004, according to the Interfax news agency.
Change of speed - variable units investigated
16 March, 2005
Variable speed units for pumped storage power plants are becoming a state-of-the-art technology for optimised efficiency in turbine mode and a wide range of power control in the pump mode. K Scherer reports on aspects and challenges for the design of the motor-generators, using Goldisthal pumped storage plant in Germany as an example
Artificial intelligence
29 June, 2004
Magnus Callavik describes the demonstration project of a new Intelligent Electronic Device with integrated control, protection and communication elements for small hydro
Armenia expects KfW credit for modernisation
28 June, 2004
ZAO INTERNATIONAL ENERGY Corporation (IEC) expects to receive a credit of US$18.2M from Germany's Kreditanstalt fuer Wiederaufbau (KfW) by the end of 2004 to modernise Armenia’s Yerevan hydroelectric plant.
Lessons learned in Latvia
04 April, 2002
When it comes to undertaking rehabilitation work, risks to hydro plant owners can be reduced if certain conditions are identified in the work contract. Dzintars Ostanevics and Knut Vik report on lessons learned during rehabilitation work on generators at the Daugava river cascade scheme in Latvia
Generators for Miranda
16 October, 2000
The generators for the Miranda hydro power plant in Brazil have been operating satisfactorily since completing a fierce regime of tests and checks. Their success means that the possibility of increasing power output from the generators could soon become a reality
Setting the standard
11 May, 2000
In keeping with developments in turbine technology, the International Electrotechnical Commission has revised its key standard for model acceptance tests. Hans Teichmann reports
Table 1
01 January, 2000
Under control
10 June, 1998
Daniel Thiery* explains the merits of a distributed control system and its application at the Sanchong pumped storage plant in South Korea
Turning on the power
10 June, 1998
Cleuson-Dixence will go on line in October, achieving time and cost targets. Reaching this point has been a technical and organisational challenge for all involved
