Learn Electrical Engineering
The rating of a transformer depends on winding temperature rise limits. Therefore, continuous winding temperature monitoring is necessary. Thus, this ensures the safe operation of the transformer. In a power transformer, winding conductors have thick insulation. Therefore, direct sensor installation becomes practically impossible. In fact, the insulation system prevents direct sensor placement. So, another temperature … Read more
What is the main purpose of a power transformer? A power transformer is mainly used to transfer power from one voltage level to another voltage level for transmission or sub-transmission purposes. Power transformers are of two types: step-up transformers and step-down transformers. A step-up transformer increases the voltage level of the generated power from the … 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
Needs of BESS Now, all over the world, fossil fuels are becoming limited. To reduce fossil fuel consumption, we are increasingly moving towards renewable energy sources. Among renewable energy sources, the two main ones are wind and solar. But both wind and solar energy generate highly variable power. For example, wind energy generation happens only … 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
Inrush current in a transformer is caused by the saturation of the core when a high flux is produced at the instant of switching on the transformer. We will explain this phenomenon in the following discussion. Also we shall discuss the necessary theory so that the concept becomes clear. Steady State Flus in a Transformer … Read more
Whenever a dead short-circuit fault occurs in the transformer circuit, the transformer delivers a very large current. Under this condition, the apparent power delivered by the transformer becomes very high. The maximum MVA that the transformer can deliver during this fault condition is the fault MVA of the transformer. Calculation of Fault Current of a … Read more