Electrical Knowledge

Switchyard does not consist of transformer. It is mainly for connections and interconnections, are  essential for transmission, distribution, collection, and controlling the flow of electricity. The  switchyard delivers power generated at the power plant to the electrical grid. Switchyards are  generally classified by voltage level, circuit breaker and bus arrangements. Switchyards are often  located directly adjacent to or near a power station. Bus Bars An electrical bus bar is defined as a conductor or a group of conductor used for collecting electric  power from the incoming feeders and distributes them to the outgoing feeders. In other words, it is a type of electrical junction in which all the incoming and outgoing electrical current meets.  Thus, the electrical bus bar collects the electric power at one location. The bus bar system consists the isolator and the circuit breaker. On the occurrence of a fault, the  circuit breaker is tripped off and...

  Introduction, necessity of DS A distribution substation is located near or inside city/town/village/industrial area. It receives power from a transmission network.  The high voltage from the transmission line is then stepped down by a step-down transformer to the primary distribution level  voltage. Primary distribution voltage is usually 11 kV, but can range between 2.4 kV to 33 kV depending upon region or consumer. A typical power distribution system consists of - 1. Distribution substation 2. Feeders 3. Distribution Transformers 4. Distributor conductors 5. Service mains conductors Along with these, a distribution system also consists of switches, protection equipment, measurement equipment etc.   Distribution feeders: The stepped-down voltage from the substation is carried to distribution transformers via feeder conductors.   Generally, no tapping are taken from the feeders so that the current remains same throughout. The main consideration in designing ...

  Introduction, necessity of TS The electricity is generated in bulk in the generating stations and then transmitted over long distances to the load points. The   transmission system interconnects all the generating stations and major load centers in the system. It forms the back bone of the   power system. Since the power loss in a transmission line is proportional to the square of line current, the transmission lines operate   at the highest voltage levels, usually 220 KV and upwards.   The transmission lines mainly perform the two functions  It transports the energy from generating stations to bulk receiving stations.  It interconnects the two or more generating stations. The neighboring substations are also interconnected through the transmission   lines. The component of an electrical power system connecting all the consumers in an area to the bulk power sources is called a distribution system. The bulk power stations are connected to the gen...