New optical differential protection algorithm applied in bus protection

Digital Low-Impedance Bus Differential Protection: Principles and Approaches

Bus Protection Considerations for Various Bus Types

Choosing a bus protection scheme requires several key considerations. The complexity of bus protection varies considerably depending on such factors as the bus layout, allowed bus switching scenarios, availability of suitable current transformers (CTs), and maintenance issues. Buses with statically assigned zone currents are well suited for the use of high-impedance bus relaying (if suitable CT...

Protection Strategies in New Optical Networking Paradigms

To handle the increasing amount and heterogeneity of Internet traffic, a set of recent innovations have been proposed for optical backbone networks. One is mixedline-rate (MLR) network, where the wavelength channels of optical paths (i.e., lightpaths) can have a variety of capacities (10/40/100 Gbps) in a wavelength-division multiplexing (WDM) network. Another is elastic network, where the trad...

Power Differential based Wide Area Protection

Current differential based wide area protection (WAP) has recently been proposed as a technique to increase the reliability of protection systems. It increases system stability and can prevent large contingencies such as cascading outages and blackouts. This paper describes how power differential protection (PDP) can be used within a WAP and shows that the algorithm operates correctly for a...

A Comprehensive Study on IEC61850 Process Bus Architecture and Spit Bus Based Differential Protection

IEC61850 communication standard for digital substation automation creates a new way to think about conventional protection scheme and configuration of substation. The presence of communication link in process bus makes a revolutionary change for future digital substation. This paper discusses briefly about process bus architecture and presents a new approach of thinking in busbar structure to m...