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Explore power transmission — components, line design, conductors, and techniques for efficient high-voltage energy transfer over long distances.
Hydroelectric power is the oldest and cheapest method of large-scale electricity generation. Remarkably, it runs entirely on water. Furthermore, it produces zero direct emissions. Best of all, it costs almost nothing to operate once built. In addition to power generation, most hydro projects also control floods, store irrigation water, and support navigation — all simultaneously. … Read more
We can categorize the factors affecting the corona loss in three groups. The equation for power loss due to corona loss is, where, From the equation it is clear that the corona loss is a function of supply frequency. If the frequency increases, the loss increases. In AC power there is always a third harmonic … Read more
What is corona? At very high voltage condition of a transmission conductor, the voltage gradient distribution of the conductor from its surface along the distance in the air is not linear. Rather, it is very high at the surface of the conductor then it decreases along the distance in air gradually but not linearly. If … Read more
The full form of BCU in a substation is Bay Control Unit. Actually, you may say this is the digital version of the total control and relay panel of a bay. Sometimes, a BCU is also used as an auxiliary BCU, which performs the auxiliary control, indication, and annunciation functions of the substation. Basic Architecture … Read more
A Bay Control Unit (BCU) is nothing but a specialized Intelligent Electronic Device (IED). We use it electrical substations to monitor, control, and protect different equipment like circuit breakers, disconnectors, and transformers, etc. It acts as an interface between the substation hardwired equipment and the HMI (Human Machine Interface). The BCU receives current voltage signals, … Read more
Till date in India, coal based power plants contribute maximum power to the power system grid. In coal based thermal power plant, we use coal for heat generation. Coal stores chemical energy. When coal burns, it releases heat. This heat produces steam in the boiler at high pressure and high temperature. This steam then flows … Read more
The basic structure of an electrical power system mainly consists of three parts: generation, transmission, and distribution. It generates electrical power at a certain low voltage level at generating stations. Then, the generated power is stepped up to a higher voltage level and transmitted to the load center. At the load center, the power is … Read more
A Battery Energy Storage System (BESS) is one of the most modern technologies used in power systems to maintain the balance between electricity generation and demand. As renewable energy sources such as solar and wind are increasingly integrated into the power grid. Therefore, energy storage systems are becoming essential for maintaining grid stability and reliability. … Read more
A Controlled switching device facilitates the close – open operation of the CB contacts at a pre-determined point of the electrical reference signal waveform to minimize switching surges. Controlled Closing with CSD The controlled closing triggers closing mechanism of a single phase pole contacts of CB at a desired voltage point-on-wave angle of that phase. … Read more
Surge impedance loading, or SIL, is the quantity of power in MVA that a transmission line can carry most efficiently. For understanding the basic concept of surge impedance loading, first, we have to understand the effect of reactive power in a transmission line. How does it reduce the efficiency of the transmission system? The expression … Read more