hydro generator Articles
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System for detection of excitation winding shorted turns in hydro generators
Abstract This article describes a specific instrument for detection of excitation winding shorted turns in hydro generators, developed in Koncar - Electrical Engineering Institute Inc., called Hydro generator Winding Fault Detection (HO WFD). This instrument is a part of the Institute's product line used for monitoring and diagnosis of rotating electrical machines. A key issue in the operation ...
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Enhancing small hydro automation using distributed micro-controllers and simulation
The past ten years has seen significant advances in low-cost micro-controllers, data communications and personal computing. Applying these technologies to small hydro automation, affordable multifunctional distributed processing solutions is now a commercial reality. The ability to reduce costs is facilitated by innovative low-cost simulation tools. The successful application of these ...
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Comparison of single phase self excited induction generator excitation configurations using the main and auxiliary windings for a micro hydro system
Induction generators are one of the most popular generators for micro hydro systems. Three phase generators are often used even though only a single phase supply is needed. This paper investigates the characteristics of single phase induction generators. Many different winding and excitation capacitor configurations are investigated. To use these generators effectively, the desired output should ...
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Voltage controlled stand-alone microhydro induction generator system
The paper discusses simulated control cases of the wound rotor self-excited induction generator WRSEIG. The generator external controller is designed to regulate the output voltage and frequency for constant or variable speed operation of the prime mover and has the inherent capability of protecting the load from short circuit, which permits voltage collapse under heavy loads. WRSEIG is ...
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Modelling of the hydro-generator local network operation and load disturbance rejection
The paper describes models of the local network operation of the hydraulic turbine-generator unit. Two different models are proposed. They describe the dynamic behaviour of a system in which the unit is connected to an equivalent system. A nonlinear model of the interconnection to an equivalent power system is considered. An optimal controller for load disturbance rejection in water turbine speed ...
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Voltage source converter with a transformer as an electronic load controller for a stand-alone power generation
This paper presents a new configuration of a voltage and frequency controller for a stand alone pico hydro power generating system employing an Isolated Asynchronous Generator (IAG). The proposed controller is an Electronic Load Controller (ELC), which consists of a three leg IGBT (Insulated Gate Bipolar Junction Transistor) based Voltage Source Converter (VSC), a DC chopper and an auxiliary load ...
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VSC with zigzag transformer based electronic load controller for a stand-alone power generation
This paper presents a novel configuration of a voltage and frequency (VF) controller for a stand-alone pico hydro power generating system employing an asynchronous generator (IAG). The proposed VF controller is an electronic load controller (ELC), which consists of a three leg insulated gate bipolar junction transistor (IGBT) based voltage source converter (VSC), a DC chopper and an auxiliary ...
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Reform in Brazilian electricity industry: the search for a new model
The objective of this paper is to analyse the background of the reform process in the Brazilian Electricity Industry and to examine the adequacy of the new energy policy being implemented as a way to restore the level of investment, in particular private investment. The Brazilian experience of market-oriented reform questions the ability of the operational competition to ensure long-term ...
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Air Source Heat Pump Installation in Neath, Port Talbot - Case Study
Aberdulais Falls in the Neath Valley, South Wales is an important industrial heritage site owned and run by the National Trust. For over 400 years these falls provided the energy to drive the wheels of industry, from the manufacture of copper in 1584 to the later tinplate works. A recent major refurbishment of the water wheel gave scope for implementing the latest hydraulic technology to improve ...
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Power estimation and reliability evaluation of municipal waste water and self–excited induction generator–based micro hydropower generation system
This paper presents power estimation and reliability evaluation of the micro hydro power generation system based on municipal waste water. Self–excited induction generator was used in the developed power plant, situated at IIT (BHU) campus, Varanasi, India. The hydro potential of the waste water flowing through sewage system of the Banaras Hindu University has been determined for annual flow ...
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West charleston hydro - Case study
In 2004, Great Bay Hydro Corporation acquired four generating facilities in Vermont, including the West Charleston Hydro plant which had been out of operation and abandoned for a number of years. The West Charleston plant was built in the early 1900s and is located on the Clyde River in the town of Charleston, Vermont. In 2010, as part of the re-permitting process and in order to meet current ...
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Short-term hydro thermal generation scheduling using modified invasive weed optimisation algorithm
This paper presents a radical methodology to find the solution of optimal short-term hydrothermal generation scheduling problem using modified invasive weed optimisation algorithm (MIWOA). The hydrothermal system is highly non-linear and non-convex due to its constraints, making the optimal scheduling difficult. In this paper, a modified invasive weed optimisation algorithm with parallel ...
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Long Tan Hydroelectric Dam
Black & Veatch is the design and construction consultant for the world's largest roller-compacted concrete dam, which will be the world's fourth largest hydropower station and protect 12 million people from flooding. China must create urban infrastructure for the equivalent of the city of Houston, Texas, every month for the next 30 years to accommodate the relocation of 280 million rural ...
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Application of the Most Recent Monitoring Systems in Hydro Power Plants
Abstract The paper describes main reasons for refurbishment of hydro power plants and summarizes the most frequent works during refurbishment. A special attention is paid to the process of refurbishment of the electric equipment, in the first line generators and excitation systems, and integration of the most contemporary monitoring system. The paper talks about some of the methods of estimation ...
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Anti-islanding protection and islanding operation of grid-connected hydropower distributed generation
Salient issues associated with the connection of hydropower distributed generation (HPDG) into distribution networks include operation and voltage regulation, grid connection and control interaction, anti-islanding protection and islanding operation, and operation of protective devices. Better understanding of these issues and finding solutions to these problems are timely and important to the ...
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Reactive power control of wind-diesel-micro-hydro hybrid power systems using matlab/simulink
This paper presents reactive power control of isolated wind-diesel-micro-hydro hybrid power system for realistic load disturbance using matlab/simulink. The mathematical model of the system based on matlab/simulink is developed. Reactive power control performance is compared using three different types of Static VAR Compensators (SVC). Transient responses for step plus normally distributed or ...
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Negative Power Generation Aspects of Adopting Renewable Sources
Renewable energy resources are all the rage nowadays on a global scale with the biggest benefit of providing unlimited access without any fear of depletion or running out in the near future. It also provides the edge of saving the continuously decreasing fossil fuel reserves and to protect the planet against the harmful pollution caused by the burning of all non-renewable resources. Some common ...
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Renewables overtake coal in Europe for the first time ever
Wind, solar and biomass overtook coal in supplying electricity across Europe for the first time last year, according to analysis by think tanks Sandbag and Agora Energiewende. This marks significant progress considering coal generation was more than twice that of wind, solar and biomass just five years ago, with these three energy sources providing 12% more electricity in 2017 than in ...
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Renewable energy solutions: Necessity not choice
An elite gathering of Asia Utility firms speak out on the need to go Green. The Energy industry has become a key talking point globally. Renewable energy solutions are no longer optional but a necessity which must be embraced by all governments. Driven by China’s determination to reduce their dependence on coal energy and to look ahead to a more sustainable future, the recent NGU APAC summit ...
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Power conditioning of an uncontrolled micro-hydroturbine-driven induction generator for distributed generation using a battery energy storage system
Distributed Generation (DG) and its interconnection to the AC power grid is a relatively new concept. DG employs small generators, which are distributed throughout the power system. The electricity is usually generated by renewable energy sources such as wind, hydro and tidal, which are intermittent in nature. These generators connected to the AC grid may lead to severe power quality problems. ...
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