Dr Suman: In signal processing, for a filter g, an inverse filter h is one such that the sequence of applying g then h to a signal results in the original signal. Software or electronic inverse filters are often used to compensate for the effect of unwanted environmental filtering of signals. For a more elaborate analysis have a look at the following links:

https://en.wikipedia.org/wiki/Inverse_filter#:~:text=In%20signal%20processing%2C%20for%20a,unwanted%20environmental%20filtering%20of%20signals.

and

Article Application of Inverse Filtering Technique in Power System Studies

Regards--

Respected Ijaz Durrani Sir, thank you so much for your response. I will go through it.

It can be applied for power system application.

Article Application of Inverse Filtering Technique in Power System Studies