Zebra mussel, Dreissena polymorpha, is a biofouling organism that lives generally in freshwater ecosystems. Zebra mussel infestation has occurred at various freshwater structures and systems including raw water intakes, industrial and domestic distribution pipelines, and hydropower facilities at its native regions as well as distant locations. A study was conducted to perform risk assessment an...

The main feature of a run-off river hydroelectric system is a small size intake pond that overspills when river flow is more than turbines’ intake. As river flow fluctuates, a large proportion of the potential energy is wasted due to the spillages which can occur when turbines are operated manually. Manual operation is often adopted due to unreliability of water level-based controllers at many ...

The effectiveness of maintenance and repairs hydropower equipment largely determines the environmental safety reliability operation modern hydroelectric power plants. article proposes a new approach to planning hydraulic equipment. task is determine sequence control actions system equipment, which, at minimum cost, will ensure given level technical condition fleet this plant for specified perio...

Anthropogenic greenhouse gas (GHG) emissions have substantially contributed to intensification of heavy precipitation and thus the risk of flood occurrence, and this anthropogenic climate change is now likely to continue for many centuries. Thus, precise quantification of human-induced GHG emissions is urgently required for modeling future global warming and precipitation changes, which is stro...

The paper presents the modeling of a solar-wind-hydroelectric hybrid system in Matlab/Simulink environment. The application is useful for analysis and simulation of a real hybrid solar-wind-hydroelectric system connected to a public grid. Application is built on modular architecture to facilitate easy study of each component module influence. Blocks like wind model, solar model, hydroelectric m...

This paper presents hybrid genetic algorithms to optimize the structure of the main parts of hydroelectric sets based on the ®nite element method. Firstly, the optimal model of the main parts of hydroelectric sets is established including an objective function and some constraint conditions. Afterwards, the stochastic direction method (SDM) and a genetic algorithm (GA) method are applied to sol...

The paper presents the modeling of a solar-wind-hydroelectric hybrid system in Matlab/Simulink environment. The application is useful for analysis and simulation of a real hybrid solar-wind-hydroelectric system connected to a public grid. Application is built on modular architecture to facilitate easy study of each component module influence. Blocks like wind model, solar model, hydroelectric m...

Public participation is now part of many decision making processes for managing environmental and technical risks. This article describes a test of a strategy to improve the quality of public input by combining themes from risk communication with the prescriptive decision process of value-focused thinking. It was hypothesized that participating in a structured, value-focused risk communication ...

This paper examines the effects of increased intermittency, caused by climate change, on strategic hydroelectric production when wind power is integrated with hydroelectricity. It is shown that increased uncertainty in water inflows caused by climate change raises hydroelectric output and increases the probability of overflow in future periods. The increased variability of wind speeds due to cl...

Failure to adequately define or understand the use of storage water in hydroelectric system has created a fragmented economic environment and schizophrenia in the industry that has the potential to limit its development as a global industry. This paper suggests that, by redefining the use of storage of water in hydroelectric system as a means of using a decision support system to obtain the eff...