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公开(公告)号：US12113393B2
公开(公告)日：2024-10-08
申请号：US17946869
申请日：2022-09-16
Applicant: ABB Schweiz AG
Inventor： Nishith Patel , Pravin Vadhiyar , Lohith V
Abstract: A self-powered IED for a pole-mounted auto-recloser connected to an electric line includes a main control module and a lockout indication module. The main control module determines a fault in the electric line and trips the auto-recloser. During a permanent fault in the electric line, the auto-recloser is remained open, and the main control module activates a lockout state by generating a lockout set signal. The lockout indication module comprises a light source and super-capacitors. The super-capacitors provide stored charges to the light source when the lockout state is activated to provide notification throughout the lockout state.
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公开(公告)号：US20200059080A1
公开(公告)日：2020-02-20
申请号：US16513707
申请日：2019-07-17
Applicant: ABB Schweiz AG
Inventor： Darshit Prajapati , Dinesh V , Nayan Shah , Pravin Vadhiyar , Vijay Shah
Abstract: 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.
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公开(公告)号：US20230011609A1
公开(公告)日：2023-01-12
申请号：US17946869
申请日：2022-09-16
Applicant: ABB Schweiz AG
Inventor： Nishith Patel , Pravin Vadhiyar , Lohith V
Abstract: A self-powered IED for a pole-mounted auto-recloser connected to an electric line includes a main control module and a lockout indication module. The main control module determines a fault in the electric line and trips the auto-recloser. During a permanent fault in the electric line, the auto-recloser is remained open, and the main control module activates a lockout state by generating a lockout set signal. The lockout indication module comprises a light source and super-capacitors. The super-capacitors provide stored charges to the light source when the lockout state is activated to provide notification throughout the lockout state.
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公开(公告)号：US11276997B2
公开(公告)日：2022-03-15
申请号：US16513707
申请日：2019-07-17
Applicant: ABB Schweiz AG
Inventor： Darshit Prajapati , Dinesh V , Nayan Shah , Pravin Vadhiyar , Vijay Shah
Abstract: 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.
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