Pressure-Time Flow Measurements Under Adverse Conditions
Theoretical analyses suggest that the pressure-time method is capable of accurately determining flow rate in the short, varying cross section, 'semi-scroll' penstocks...

Optimal Real-Time Control of Hydroelectric Power Plant Using Dynamic Programming
In this paper, an approach of optimal real-time control of hydroelectric power plant operations is presented. The methodology is based on a dynamic programming technique where the original...

Hand Held Powerhouse Control Console or Portable Data Terminal
The Portable Data Terminal (PDT) is a very small light weight hand held computer terminal that communicates with the control system computer by radio. An operator monitors power plant...

A New Power Invention
Hydropower is the most natural form of energy generated in the World. It allows us to make use of our natural resources without pollution. It harnesses the basic fundamentals of nature...

Optimising Electric Power From a Small Scale Hydro Plant
The paper summarizes new development in electrical power generation from small scale hydro prime movers. It describes various methods of power generation such as CSCF (Constant speed constant...

Standard Safety and Control Concept for Double Regulated Small and Medium Hydro Turbines
The paper proposes a standard control concept for double regulated small and medium hydro turbines. The concept is based on minimum protection requirements for safe and reliable quick...

Electrical Design Survey
In North America, a mini hydro project consists primarily of the civil works which routes water to the turbine generator and the electrical hardware necessary to interface it with a utility....

A Hydroelectric Plant Operator's Assistant
This paper describes a PC based application designed to assist in the process of enhancing the performance of multi-unit hydroprojects. Optimization considerations, uses of the Operator's...

Ferroresonance & the Snettisham Hydroelectric Project
Key system features of the Snettisham power plant in Alaska will be highlighted along with a discussion of the operational problems encountered due to a ferroresonant condition. The project...

Economic Impact of Reduced High-Voltage Equipment Life
In May, 1989, the Western Area Power Administration and the Bureau of Reclamation published a report entitled Replacements: Units, Service Lives, Factors. This report showed that equipment...

Voltage Regulator Influence on Generator System Stability
During initial startup of a generator system, it is not uncommon to witness generator voltage instability. Most of the time, the solution is reduced to returning the stability control...

Design Considerations for Radial Key Retrofit
A practise that is becoming more and more common is to retrofit hydro-electric generators with Radial Key Systems. There are significant design considerations that must be made to ensure...

Varying Generator Excitation to Control Draft Tube Surge
The Bureau of Reclamation recently experimented with varying the excitation applied to a hydroelectric generator to control power swings caused by draft tube surging in a Francis turbine....

Repair of Rainbow Project Unit Number Eight
This is a case history that discusses diagnosis and correction of a AC synchronous generator problem. The problem involved loss of mechanical integrity between the generator's...

Dam Safety Hydrologic and Seismic Evaluation of TVA'S Beech Dam
Beech Dam is part of the Beech River watershed resource development located in Decatur and Henderson counties in west Tennessee. The development consists of eight dams and approximately...

Measurements of Time Lag in Concrete Gravity Dam Foundations
Uplift measurements from eight large concrete gravity dams show that the time lag between an increase in headwater level and a corresponding increase in uplift pressure is insignificant....

B.C. Hydro's Practice for Assessing the Foundations of Existing Dams on Rock
Since the early 1980's B.C. Hydro has carried out dam safety reviews which included 33 gravity and embankment dams founded on rock. The foundations include moderately jointed,...

Rehabilitation and Replacement of Slab and Buttress Dams at the Wissota Hydroelectric Project
The Wissota Hydroelectric Project is a 70 year old slab and buttress dam which required rehabilitation due to deteriorating concrete. Due to restrictions imposed by the FERC and Owner,...

Foundation Investigations of Concrete Dams
This paper discusses a series of foundation investigations conducted on concrete dams by Pacific Gas and Electric Company. The paper focuses on investigative techniques, equipment, appropriate...

Rocky Mountain Project Seepage Cutoff in Solutioned Limestone
The right abutment of the main closure dam for the Rocky Mountain Project required extensive treatment of deeply weathered shale and solutioned limestone to assure control of seepage and...

 

 

 

 

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