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?
The assembly of the apparatus used to change some characteristic (e.g. voltage, a.c. to d.c., frequency, p.f etc.) of electric supply is called a sub-station. The four major types of substations are explained in this article. Sub-stations are an important part of the power system. The continuity of supply depends to a considerable extent upon the successful operation of … [Read more...] about 4 Major Types of Electrical Substations
The IEEE defines protective relays as: “relays whose function is to detect defective lines or apparatus or other power system conditions of an abnormal or dangerous nature and to initiate appropriate control circuit action ”. Relays detect and locate faults by measuring electrical quantities in the power system which are different during normal and … [Read more...] about Classification or Types of Protective Relays
What is Voltage Surge or Transient Voltage? The sudden rise in voltage for a very short duration on power system is known as voltage surge or transient voltage. Surges or transients can damage, degrade, or destroy electronic equipment within any home, commercial building, industrial, or manufacturing facility. Transients can reach amplitudes of tens of thousands of volts. … [Read more...] about Voltage Surge in Power System