Abb Schweiz Ag

Arinjai Gupta

Ganesh Kulathu

Martin Nykvist

Simi Valsan

Wolfgang Wimmer

Abhilash Gopalakrishnan

Apala Ray

Jithin Kizhakey Putanvetil

Diogenis Papaevangelou

Willem Otto Van Der Wal

Emilian-Ioan Anton

Manigandan P

Ketan Kulkarni

A system and method for detecting location of fault in a cable receives disturbance data from first and second protection relays when one of the first protection relay and/or the second protection relay detects a fault in a section of the cable. The system extracts voltage and current data for each segment in the section using the disturbance data, cable parameters and length of each segment, and determines a fitness value for each segment in the section using the extracted voltage and current data. The system identifies a segment with a lowest fitness value from the fitness value determined for each segment in the section by comparing the fitness value of each segment with the fitness value of subsequent segments in the section and detects the segment with the lowest fitness value as fault location in the cable.

Method and system for detecting location of fault in a cable

A method for detecting a fault in an intelligent electronic device that includes components uses a Bayesian network. The method includes detecting a failure event in the components, obtaining a first list of cause of failures in the component using a fault tree model, computing probability of the cause of failures to obtain a second list of probable causes of failure by monitoring of information about the elements identified in the first list, identifying a root cause of failure associated with the element comprised in the component using the Bayesian network based on the second list, and initiating a function. The function may be one of restarting the element having the root cause of failure, a filtering operation for input data provided to that element; and providing an alert in the human machine interface associated with the intelligent electronic device.

Method of detecting faults in intelligent electronic devices

The present disclosure discloses a device and a method for condition monitoring and protection of rotating electrical motors. The device receives measurements of current flowing in a power line connected to the rotating electrical machine. The device extracts a frequency band content containing information representative of condition of rotor bar from the measured current signal using wavelet filters. Further, the device compares the frequency band contents with a predefined threshold value and identifies a condition of the rotor bars. The condition includes damages caused to the rotor bars. Based on the condition, the IED generates one or more status signals (alarm signals or trip signals). The trip signal is provided to a switch connected to the power line to disconnect the rotating electrical machine.

Device for condition monitoring and protection of rotating electrical machines, and a method thereof

A method and a system for power management for a plant electrical network are provided. The power management system over a plant-wide communication network includes both concepts of hierarchical level and distributed level power management using multiple controllers. At least one controller in the power management system is configured for power management in a first local process area within the plant electrical network and is capable to communicate with at least a second controller configured for power management in a second local process area within the plant electrical network over the communication network.

Method and system for power management

Power management systems and methods are disclosed for a plant electrical network using plurality of controllers configured for power management such that a first controller from the plurality of controllers is configured to perform power management in a first local process area within the plant electrical network and can communicate with a second controller that is configured for power management in a second local process area within the plant electrical network, over a plant wide communication network. The power management function in the first local process area can be performed based on the information communicated between the first controller and the second controller and/or based on a power balance computation carried out for the plant wide electrical network or for the first local process area. The power management function can include slow load shedding.

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Bengaluru, India

Arinjai Gupta