What we use on a daily basis and what we could not live with is electricity. We could not conceive of a world with the current rhythm of life without the use of electricity. However, many people do not know what is electricity nor how it is produced. Since it is of great importance for the development of human beings and technology, we are going to dedicate this article to explaining what electricity is and all its characteristics.
If you want to know what electricity is, how important it is, how it is generated and how it is distributed, this is your post.
What is electricity
Before understanding what electricity is, we must know the definition of energy. We define Energy as the capacity of a body or substance to perform work. In the current technological and economic environment, energy is a essential natural resource that is manipulated and transformed according to our needs to perform different types of work.
Although electricity as energy has different uses, both industrial and domestic, we must remember a fundamental law: Energy is neither created nor destroyed, it is only transformed. Each transformation degrades a part of the energy, which means that it is neither eternal nor infinite. The different ways of generating electricity also have environmental impacts of varying magnitude, which is crucial when selecting energy production sources.
La electricity It is a form of energy based primarily on the fact that matter is composed of particles with electrical charges, both positive and negative. When these charges are at rest, electrostatic forces are generated between them; when they are in motion, an electric current is generated and particles are formed. magnetic fieldsIn essence, electricity is the result of the movement of these charges through a conductive circuit.
Basic parameters of electricity
The basic parameters of electricity are those that allow us to quantify this force and better understand how it works. Among the most important we find:
- Voltage or voltage: Measured in volts (V), it is the potential difference that drives electrons through a conductor.
- Electric current or intensity: measured in amperes (A), is the quantity of electrons flowing through a conductor at a given moment.
- Electric power: Measured in watts (W), it is the rate at which energy is transferred or converted.
- Electrical energy consumed or produced: Measured in watt hours (Wh), it quantifies the total amount of energy used or generated.
These parameters are essential to understanding how electricity is measured and used, within different scales such as kilowatts (kW), megawatts (MW) and gigawatts (GW). The need for correct metering is crucial for both consumers and industry, as it regulates the consumption and efficient transmission of energy.
A key feature of electricity is that At the point of consumption it is a clean and non-polluting energy. It does not produce odor, is not detected by the naked eye and cannot be heard. Electricity can be derived from multiple sources. primary energy sources, which can be divided into renewable (such as sun, wind or water) and non-renewable (such as fossil fuels or nuclear energy).
Depending on the method of generating electricity, the environmental consequences will vary considerably. A cleaner process means less damage to the environment, which is why renewable energies are at the heart of efforts to achieve more sustainable production today.
It is important to note that, after its generation, electricity goes through a process of distribution and transportation, using underground power lines and cables to reach from generating plants to consumption centres. This entire process is also conditioned by its effect on the environment.
How electricity is generated
Electricity can be generated in many ways, but all of them require a process of transformation of a primary energy source into electrical energy. power plants These are the places where this transformation takes place, and depending on the raw material used, there are several types of electrical generation:
- Thermoelectric energy: use the fossil fuel combustion (coal, natural gas or oil) to heat water and generate steam that, when passing through turbines, generates electricity.
- Hydroelectric power: the potential of a is exploited waterfall to spin a turbine, which in turn generates electricity. It is one of the cleanest and most sustainable forms of generation, although it depends on geography and climate.
- Nuclear energy: use the fission of the atom of uranium or plutonium to generate heat, which is transformed into electricity. Although efficient, it presents major challenges in terms of radioactive waste and safety.
- EnergÃa eólica: The wind turbines They transform the kinetic energy of the wind into electricity. This method is one of the most widely used renewable sources in the world due to its low environmental impact.
- Photovoltaic Solar Energy: through solar, solar radiation is converted directly into electricity. It is ideal for areas with high solar exposure and is one of the fastest growing energy sources in recent years.
Each type of generation has its own particularities. For example, nuclear and thermal power plants tend to be more dependent on non-renewable resources, while wind, solar and hydroelectric plants use clean, renewable energy, making them a more attractive option for the future.
Distribution and consumption of electricity
Once generated, electricity must be transported from the power plants to the consumers. The system that allows this consists of a distribution network which ensures that electricity reaches homes and industries efficiently and safely. This is done through Electrical substations that adjust the voltage of electricity to make it more transportable and consumable.
The distribution process includes:
- Transformation: The electricity generated is transformed into high voltage for efficient transportation and then in low voltage for direct consumption in homes and industries.
- Shipping cost: the power lines of high voltage They are responsible for transporting large quantities of electricity over long distances. Once close to the consumption centres, low voltage cables are used.
- Commercialization: The marketing companies buy electricity from the producers and sell it to the consumers, also managing the rates and the bills.
Access to electricity is a pillar of modern development. In recent decades, electricity has not only been a technical product, but has meant a change social and economic globally. The consequences of massive power outages reflect the dependence of our society towards this energy. Without electricity, our infrastructure, factories, hospitals and homes come to a complete standstill.
One area of ​​concern is modern society's dependence on electricity and the current inability to store large amounts of energy economically. This is a major challenge for electricity systems, as generation must be synchronized in real time with consumption.
Electricity is undoubtedly the heart of our modern societies, and its origin, transportation and consumption are essential for the functioning of virtually all of our daily activities.