What makes the new technology of the electric springs more effective than the common voltage stabilizer at the load level
In some situations, ESs show better voltage control capabilities in comparison with STATCOMs; however, they show comparable voltage control capabilities to other voltage controllers. On the other hand, ESs can contribute in the frequency regulation by controlling the active power of non-critical loads. Hence, they can contribute in the primary frequency control of a power system. I recommend the following article,
Liang L, Hou Y, Hill DJ, Hui SY. Enhancing resilience of microgrids with electric springs. IEEE Transactions on Smart Grid. 2018 May;9(3):2235-47.
Thanks Dr. Mohamed for your answer, I've checked the mentioned paper and i need a more clarification about how with a less reactive power capabilities of a smart load with (ES) a better voltage regulation can be obtained, noting that both of them on the same bus (LV load side) not on transmission line level.
The STATCOM regulates the voltage of the controlled bus. In this case, the overall loads connected to the controlled bus are to be compensated by the STATCOM. With an ES, the voltage reaching the terminals of the NCL is sacrificed for regulating the bus voltage by which the CL is supplied. Therefore, the overall regulation requirements placed on the ES is low in comparison with the STATCOM. Good luck
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