When doing the load flow study in the Simulink environment, we need to put the transmission line parameters in the Simulink block. In the question, typically, the parameters are given as per unit values. But when we put the values into the Simulink block, we need to put the actual resistance, inductance, and capacitance value …
An IDMT (Inverse Definite Minimum Time) relay is a type of protective relay that is used to provide overcurrent protection for electrical systems. IDMT relays are commonly used in low-voltage and medium-voltage electrical systems to protect against overcurrents caused by fault conditions such as short circuits. IDMT relays work by monitoring the current flowing through …
During electrical power calculation, typically we use the normal calculator, in which sometimes we make mistakes during ac power calculations. Ac power consists of a power factor which we have to take into consideration. Again for three phase we have consider root 3 facor. This simple calculator will reduce the possibility of making an error …
Although both methods give protection against overload and thermal rise, both have their own pros and cons. Especially with the important objects, both methods are used because they complement each other. RTD basics We know metal has the property of varying resistivity with respect to temperature. This relationship is linear for some metals, over wide temperature …
Why is both RTD temperature and thermal overload protection needed? Read More »
What is Buchholz Relay The Buchholz relay is a gas-actuated device that is used to protect against faults in transformers. Buchholz, the inventor of this relay, had originally designed it for incipient faults. This device can be located in the pipe connecting the conservator to the main tank and will give an alarm if there …
Introduction Induction machines, also called asynchronous machines, can be used as generators or motors. Induction machines can be either of one or three-phase construction. The following discussion focuses on the three-phase machines and their properties. The maximum of the applications for three-phase induction machines is with power ranges varying from a few kilowatts to a …
The power factor is a concept that is needed to be very clearly understood by electrical engineers. It is studied in the first or second year of the engineering courses when the students are not fully ready to grasp all the bits and pieces of this concept. Here I tried to write down the necessary …
A three-phase transformer is used to generate and transmit a large amount of power. Three-phase step up and step down transformers are basically used in various fields in the power system network. A transformer can be formed by joining three separate single-phase winding in a suitable way. Such an arrangement is called 3-phase bank of …