Citation link:
Authors:
Tuliev, Nikolay Todorov; Тюлиев, Николай Тодоров; Ovcharov, Stefan Jordanov; Овчаров, Стефан Йорданов; Yakimov, Peter Ivanov; Якимов, Петър Иванов; Balkanska, Emiliya; Балканска, Емилия
Title:
Multifunctional protection relay input module modernization
Date of Issue:
2008
Is Part of:
Proceedings of the Technical University – Sofia, 58(2), 2008, pp. 123-128
Publisher:
Технически университет - София
Identifiers:
1311-0829 [issn]
Type:
Article
Language:
eng
Subject:
protection relay, ADC, measurement
Abstract:
The paper describes the advantages of the modern numerical protection relays. It is proven that the accuracy depends mostly on the input module. Different approaches in design of current and voltage input transducers are mentioned. After studying the parameters and characteristics of the latest integrated circuits of operational amplifiers and ADCs a new design of the analog input module is proposed. A detailed description of the hardware of the module is presented. After investigation of the circuits recommendations for better operation are given.
Description:
Reviewer prof.Emil Dimitrov. - Formulas, schemes,. - References, pp. 128
