Current Generator
Generators that generate electric current, mixed feeding systems are analyzed from the standpoint of both quantitative and qualitative results. The interrelationships with all other generation technologies are discussed and identified synergies. Resources, sustainability criteria and investment challenges are reviewed in the context of development.
1. Introduction Electric Generators
Hydropower produces about a fifth of the world's electricity and supplies 87% of electricity from renewable sources, however, only one third of the world's hydroelectric potential has been realistic so far developed. This is especially surprising because there is great potential in countries where the need for electricity is greatest.
Sustainable Hydropower is a renewable source of safe, clean and reliable energy. And power supplies to 161 countries and their development is more advanced in some of the richest and most environmentally conscious.
It can become a key tool of the international community in the fight to raise the living standards of the poorest. No society has successfully tackled poverty without addressing water and energy security and the provision of affordable and reliable water and electricity can make an important contribution to achieving the Millennium Development
Based on the simplest principles of hydropower uses gravity to produce electricity. As water is released through the turbines, power generation, power is essentially free and infinitely renewable. Water is not consumed in the process. It passes through the power plant without change and may be returned to the river's natural course and / or used for irrigation, water supply, improving navigation. Water storage in reservoirs feeder can protect against drought and reserve capacity in these deposits can reduce the risk to low-lying areas that are vulnerable to flooding.
Hydroelectric power can be efficient for storage in the reservoirs of fresh water, allowing it to be released to meet peak demand or loss of supply from other sources. This makes it the natural partner for other renewable technologies - like wind, wave, tidal and solar energy - not to provide a continuous supply.
It also improves energy security. While the seasonal flows of water are stored sensibly, hydroelectric generation is entirely predictable. It is immune to fluctuations in fuel prices, and it offsets the need to burn 4.4 million barrels of oil equivalent in the world every day. In a mixed system of energy, hydropower flexibility also allows the fossil fuel plants to operate in a steady state at peak efficiency, further reducing emissions.
Recent events have brought the power generation and its impact on our lives relief, and greatly increased the recognition of how energy policies affect the welfare of our planet. Despite efforts to manage the global electricity demand will double over the coming decades.
2. The security needs of the energy description, along with system requirements of energy quantitative and qualitative
The issue of energy security in its broadest sense, covers a wide range of issues, technologies and government policies. In the context of this paper we use the term in a more limited.
We recognize that energy comes in many forms, coal, natural gas, oil, nuclear, rivers, wood, wind, solar, geothermal, etc. The end use of many of the basic forms of energy to produce heat through combustion and leading to the production of electricity. Other ways to produce electricity directly through a process, not combustion. However, among the various forms of energy, electricity is one way that many consumers affordable and convenient. With the power of the majority of end users can achieve their business goals and lifestyle. For this work focuses on energy security from the standpoint of the electricity sector.
Energy Security (also known as a security system) involves the design of the system to provide a service to end users despite the problems of fuel availability, forced outages of generators and power outages of transmission system components . Selection of power generators that use different types of primary fuel allows operations to continue despite the disruption of fuel supplies or prices. Maintaining adequate spinning reserve of the remaining units can maintain system frequency and to avoid restricting the load. A transmission line may be damaged and down for the relay protection, but the power keeps flowing, because there is a redundant circuit.
We recognize that there are a variety of power systems so that some do not have hydro and other Hydro are dominant. In this range of capacities of hydroelectric systems that dispatcher must develop economic dispatch methodologies that take into account the unique role of hydrocarbons as well as coordinate the operation of hydroelectric power generators with other power generating units. Function dispatch system has changed significantly since 1900 when it approved the deregulation and market managers. In power systems that have reorganized the operation of the system and concerns about the safety of the system are contained in documents known as grid codes. In public services that are vertically integrated dispatch system issue and safety is addressed through the use of the generation of issue determined in accordance with the procedures of lower cost optimization. At least the system operators recognize that no hydroelectric generation has unique capabilities that provide operational flexibility and economic advantages that other types of generation are not.
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