Answered step by step
Verified Expert Solution
Link Copied!

Question

1 Approved Answer

A numerical line differential relay provides segregated three - phase current differential protection on a 5 0 Hz system. Each phase current input is sampled

A numerical line differential relay provides segregated three-phase current differential protection on a 50 Hz system. Each phase current input is sampled every 2.5 ms and is converted to a complex numerical quantity using discrete Fourier Transform filters, each producing a real and an imaginary component. Every filter output is represented by a 16-bit binary number. To facilitate the calculation of differential and bias currents, all three phase current quantities are transmitted between line ends in telegram packages together with required timing, control, and status information. The timing, control, and status information imposes an additional 40%(approximate) burden on the telegram payload. The telegram is transmitted using a byte-orientated communications protocol (meaning that the telegram must be composed of a whole number of bytes). To assure correct data routing and security, an additional six bytes are added to the telegram payload. 64kbps digital channels are available to transmit data between line ends. Assuming the transmission of a telegram must start only at a sampling instant, and that the differential calculation can only be performed upon receipt of a new telegram, determine how many times per power system cycle the telegrams can be sent, and consequently how often the differential algorithm can be executed at a receiving terminal. You should clearly demonstrate how you determine your answer.

Step by Step Solution

There are 3 Steps involved in it

Step: 1

blur-text-image

Get Instant Access to Expert-Tailored Solutions

See step-by-step solutions with expert insights and AI powered tools for academic success

Step: 2

blur-text-image

Step: 3

blur-text-image

Ace Your Homework with AI

Get the answers you need in no time with our AI-driven, step-by-step assistance

Get Started

Recommended Textbook for

Repairing And Querying Databases Under Aggregate Constraints

Authors: Sergio Flesca ,Filippo Furfaro ,Francesco Parisi

2011th Edition

146141640X, 978-1461416401

More Books

Students also viewed these Databases questions

Question

Does it exceed two pages in length?

Answered: 1 week ago

Question

Does it avoid typos and grammatical errors?

Answered: 1 week ago