Design objectives of new digital control and monitoring of high voltage circuit breakers

Abstract

This paper describes the monitoring devices that were developed to integrate electronic systems for control and monitoring of the main functions of circuit breakers with respect to three main objectives:First, they must improve the overall reliability, availability and dependability of high voltage substations, transmission system and electrical distribution networks where the circuit breakers with monitoring are installed, as for example in a strategic location in a network. Second, the monitoring and control system must offer a minimum set of connections and simplicity of operability and self-maintenance to the user, and insure interoperability with other type of equipment installed in the substation. Third, the monitoring equipment has to be designed to be flexible enough to reply to the galaxy of user requirements of the world.The result is to make the use of a high voltage circuit breaker less expensive during its life by less regular maintenance, in a "New World" of electrical power deregulation, and competition.

Contact Force Monitoring and Its Application in Vacuum Circuit Breakers

“…Since the key role of circuit breaker and its widespread application, many kinds of circuit breaker condition monitoring system have been developed. Condition monitoring schemes already proposed for circuit breakers are mainly dealt with: 1) Proper operations of circuit breaker mechanisms [2]- [5], such as vibration of mechanic mechanism, force of charging mechanism, waveform analysis of control circuit current.…”

An analysis of the performance of 245 KV circuit breakers applying the radiometric monitoring and the wavelet transform

“…Following this context, some monitoring schemes of circuit breakers have been presented [3]- [5], but in [2] a new methodology was shown, a noninvasive monitoring scheme that could be easily applied to existing CBs without the requirement for outages or retrofitting. It was demonstrated the practicality of measuring time between pole-closing in CBs during capacitor switching from a measurement of emitted radio waves.…”

Analysis of the monitoring network of substation as a complex network

“…There by, it is very important to control and monitor the status of Electrical equipments. With the addition of control and monitoring equipment, more and more control and monitoring network have been laid in the Substation [1], such as status monitoring network, relay control network and so on.…”