Bundled conductors are commonly used to increase electrical capacity and reduce corona and radio noise at voltages above 200 kV. Though the extent of corona and radio noise is impacted by elevation (air density), and other factors such as conductor surface condition and moisture, the bundle dimensions are the primary factor in mitigating the onset of the corona. … [Read more...] about Bundled Conductors
This article explains the measurement of three-phase power in star connected or delta connecter load using the wattmeter methods. The power in a three phase load can be measured by following methods: Three wattmeter method Two wattmeter method One wattmeter method The name of these methods indicates the number of wattmeters used in the measurement of … [Read more...] about Measurement of Three Phase Power | Wattmeter Methods
In practice, different types of underground cables are generally required to deliver 3-phase power. For the purpose, either three-core cable or three single core cables may be used. For voltages upto 66 kV, 3-core underground cable (i.e., multi-core construction) is preferred due to economic reasons. However, for voltages beyond 66 kV, 3-core-cables are not preferred because … [Read more...] about Types of Underground Cables
What is a Circuit Breaker? As the name indicates, circuit breaker means the device which breaks (Open) the circuit under the abnormal condition and protects the system from hazards. Keep reading to understand the working principle of circuit breaker. The function of a circuit breaker is to isolate the faulty point of the power system in case of abnormal conditions such as … [Read more...] about What is Circuit Breaker – Working Principle and Arcing Phenomenon
HVDC stands for High Voltage Direct Current. An HVDC electric power transmission system uses direct current for the bulk transmission of electrical power, in contrast with the more common alternating current systems. For long-distance distribution, HVDC systems are less expensive and suffer lower electrical losses. For shorter distances, the higher cost of DC conversion … [Read more...] about What is an HVDC (High Voltage Direct Current) Transmission System?