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arun babu
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please explain the transient and subtransient reactance of synchronous machines
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arun babu said:oops...that was not what i was looking for...anyways thanks for the info..in fact i hope to get a very down to Earth and easy to understand explanation on the said topic ie transient and sub transient reactance of alternators...
i have learned that it is concerned with the induced current in damper winding and field winding of synchronous machines..which is divided into transient period and sub transient periodsberkeman said:Well, you need to start by telling us what you know so far, and what sources of information you have used.
Transient reactance is the measure of the ability of an alternator to withstand sudden changes in load, while subtransient reactance is the measure of its ability to withstand short-circuit faults. Transient reactance is higher than subtransient reactance, as short-circuit faults are more severe and require a stronger response from the alternator.
Transient and subtransient reactance values are determined through testing and analysis of the alternator's electrical and mechanical characteristics. This includes measurements of inductance, resistance, and other parameters that affect the alternator's ability to respond to sudden changes in load or short-circuit faults.
Knowing the transient and subtransient reactance values of an alternator is crucial for properly designing and operating a power system. These values are used to calculate the alternator's response to transient events and short-circuit faults, which can affect the stability and reliability of the entire system.
Yes, the transient and subtransient reactance values of an alternator can change over time due to factors such as aging, wear and tear, and changes in operating conditions. It is important to regularly monitor and update these values to ensure the continued safe and efficient operation of the alternator and the power system.
The transient and subtransient reactance values of an alternator can be improved through design modifications, such as increasing the number of turns in the rotor windings or using different materials. However, these changes must be carefully considered to avoid negative impacts on other parameters and overall performance of the alternator.