Archive for category Power and Energy
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The term “Load” in electrical power system engineering can have several meanings. Here are basic definitions of the term “Load”.
- A device, connected to a power system, that consumes power.
- The total power (active and/or reactive) consumed by all the devices connected to a power system.
- A portion of the system that is not explicitly represented in a system model, but rather is treated as if it were a single power-consuming device connected to a bus in the system model.
- The power output of a generator or generating plant.
Where the meaning is not clear from the context, the terms, “Load Device”, “System Load”, “Bus Load”, and Generator or Plant Load, respectively, may be used to clarify the intent.
ELECTRICITY theft and meter tampering have been a great cause of concern for electric supply companies. Recently some efforts have been made to reduce these power losses.
Previously, the company’s staff was required to read the meter on a monthly basis for a proper billing. Moreover, it requires a large number of meter readers to collect reading from each consumer.
Human errors and tampering in records are inevitable. Ultimately, it leads to non-transparency. Here comes the concept of smart grids and smart meters. With smart grid, remote monitoring of meters and remote control supply are possible.
The technology is getting common in many countries. The time is ripe for power supply companies to invest in this technology to gain the trust of consumers.
IN the power system the transmission and distribution of electrical energy involves many losses. Some of these losses can be precisely defined and are termed technical losses. While other losses occur during transmission and distribution of electrical energy and involve non – technical parameters. The total non – technical losses (NTL) cannot be computed precisely. Moreover, it is very difficult to control and reduce the losses.
The NTL includes but not limited to electricity theft. Electricity theft has severe and dangerous effects.
Primarily, electricity theft affects the utility company by overloading the generation unit and then its consumers.
The overload can trip the generation unit interrupting power supply to all consumers and can lead to even blackouts.
Electricity theft is a serious concern for utility companies like the KESC as they are under threat of these economic losses. Eventually utilities like the KESC cannot invest in researching or implementing measures to reduce power outages and loadshedding.
In the light of these issues, utility companies are forced to impose excessive tariffs on honest consumers because they cannot bear total losses solely by themselves. Hence, we as an honest consumer suffer.
The government, as well as all political parties, should seriously look into this matter and come out with the solutions to stop electricity theft. Moreover, the government should provide adequate security to KESC officials in the mission of end electricity theft.
One of the most important course in electrical engineering where a continuous update of the course outline is essential is power electronics and its applications. The frequent update of course outline may proved to be an efficient way to implement an up-to-date research-based education and implement new emerging applications.
Among many new applications in the field of Power Electronics is in renewable energy systems. Renewable energy is not very popular in Pakistan at the moment. The use of Renewable Energy is gaining popularity worldwide and this is the right time to embrace this field with open arms.
The outline under the chapter of Renewable Energy should atleast contain Introduction to Renewable Energy System, Need for more energy, Renewable Energy Sources (solar, wind, hydro etc), environmental impact, Renewable energy in a sustainable future etc
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