Abb Schweiz Ag

Darshit Prajapati

Vishal H Shah

Nayan Shah

Vijay Shah

Thomas Kueng

Tero Talvitie

Juhani Koivupuro

Pravin Vadhiyar

Nishith Patel

Dinesh V

Dinesh Vaghela

The invention relates to remote activation of a communication module of a self-powered intelligent electronic device (IED). The IED controls an auto recloser mounted on an electric pole of a power distribution network. A controller of the IED, receives an activation signal from a trigger source, positioned within a predefined distance from the IED, through an optical sensor to activate the communication module. A control signal is generated, upon the controller of the IED detecting the activation signal, for powering the communication module from a power supply module. The power supply module is enabled to power the communication module for a duration controlled with the control signal. The communication module is activated for communicating a plurality of data associated with the IED to a remote communication device upon enabling the power supply module for the communication module.

Remote activation of communication modules of self-powered intelligent electronic devices

The present disclosure relates to a method of integration and compensation in a protection relay. The method may include the protection relay: receiving a measured signal from a Rogowski coil and converting the measured signal to digitized samples, where the measured signal is a differentiated current signal over time; iteratively computing integrated current data from the digitized samples using a first digitized function to obtain integrated value; iteratively computing a compensated current data from the integrated current data using a second digitized function to remove a DC component in the integrated current data; evaluating the compensated current data to identify a fault condition; generating a trip signal on identification of a fault condition to operate a switch to electrically disconnect to protect the power equipment. The steps of integration and compensation may be performed in time window that is within the time period of the measured signal.

Integration and compensation for a protection relay

The invention relates to a method for allowing a configuration change of an Intelligent Electronic Device (IED) of a power system, wherein the configuration change affects an operation of the IED. The method comprises receiving a request at the IED for the configuration change, wherein the request comprises a configuration change signal. The configuration change signal is received at the IED in response to establishing a connection between an I/O module of the IED and a signalling component. The method further comprises verifying the request automatically by the IED, wherein verifying the request comprises detecting a predetermined signal pattern at the I/O module upon receiving the configuration change signal, wherein the predetermined signal pattern is stored in a memory associated with the IED. In addition, the method comprises enabling the configuration change in response to successful verification of the request by the IED.

Method for allowing a configuration change of an intelligent electronic device of a power system

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Gujarat, India

Darshit Prajapati