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The analysis of wide area power system events is important for the successful operation of the system and the optimal design and configuration of protection and control systems, as well as System Integrity Protection Schemes (SIPS). The paper analyzes the types of system events, available data sources, existing analysis tools and requirements for the development of automatic hierarchical event analysis...
This paper shows the benefits of synchronous multichannel PD measurements. Different methods of evaluation as 3PARD, 3PTRD and 3CFRD are presented in theory and by application examples. These advanced evaluation techniques require a fully synchronized multi-channel PD measuring system for advanced PD data evaluation. PD source separation and the separation of PD and interferences can simplify the...
Distance relays are the most commonly used protection devices in transmission systems around the world. The recent large disturbances in North America and Europe demonstrated their sensitivity and impact on wide area disturbances. Modern distance protection relays are complex multifunctional devices that can perform much better under dynamic system conditions. Methods for improvement in their performance,...
Modern distance protection relays are complex multifunctional devices based on classical or advanced operating principles that impose special requirements for their testing. The paper analyzes the functionality, the functional hierarchy and the schemes typically available in distance relays. It then discusses the methodology for testing of such relays. Testing of individual protection and non-protection...
This paper shows the benefits of synchronous multichannel PD measurements. Different methods of evaluation as 3PARD, multi-site PD decoupling and multi-frequency PD decoupling are presented in theory and supported by application examples as PD measurements on power transformers and high voltage XLPE cable systems. These advanced evaluation techniques require a fully synchronized multi-channel PD measuring...
This paper deals with the new IEC 61850 international standard for communications in substations to implement the protection, automation and control of electric power systems. IEDs are multifunctional devices designed for substation protection, monitoring and control systems. The development and implementation of IEC 61850 based devices and substation automation systems requires a new generation of...
The new IEC 61850 standard for communication networks and systems in substations allows the development of high-speed peer-to-peer communications based applications, as well as distributed metering, control and protection solutions based on sampled analog values. The paper describes in detail the principles of different IEC 61850 communications based functions in multifunctional IEDs and analyses...
Configuration, coordination, testing and analysis of the operation of multifunctional protection relays are the typical activities of protection engineers and technicians. They require the use of multiple software tools, usually different for each vendor. They impose varying requirements for the representation of the operating characteristic of the distance protection functions. The paper discusses...
Modern distance protection relays are complex multifunctional devices based on classical or advanced operating principles that impose special requirements for their testing. The paper analyzes the functionality, the functional hierarchy and the schemes typically available in distance relays. It then discusses the methodology for testing of such relays. Testing of individual protection and non-protection...
UCA based protective relays use high-speed peer-to-peer communications to Implement distributed protection schemes or to replace hard wired Interface between relays with GOOSE messages defined by UCA 2.0 and JEC 61850. The paper presents the requirements for testing of such devices, including the specifics of simulation of the substation environment and monitoring of the performance of the relay under...
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