Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Timo Keil"'
Autor:
Johann Jaeger, Timo Keil, Christoph Butterer, Jonas Prommetta, Jakob Schindler, Guenter Ebner
Publikováno v:
IEEE Transactions on Power Delivery. 35:2896-2904
The new characteristics and phenomena of hybrid AC/DC transmission grids challenge the conventional protection concepts. In hybrid AC/DC overhead line systems, AC and DC systems are located on the same support structure. As a result, electromagnetic
Publikováno v:
2021 IEEE Madrid PowerTech.
The paper discusses how the asymmetrical situation during single-phase autoreclosure influences the protection security and line loadability. First, we analyze the phase current displacement and earth current in single-phase and three-phase tripped c
Publikováno v:
2019 IEEE 8th International Conference on Advanced Power System Automation and Protection (APAP).
AC/DC-hybrid lines are transmission systems with AC- and DC-line conductors on the same support structure. The added DC-conductors have a significant influence on the parallel AC-conductors – especially on the AC-protection. Studies of this aspect
Publikováno v:
IEEE Transactions on Power Delivery. 23:52-57
This paper describes an advanced coordination method for an optimized protection time grading based on a new nonstandard tripping characteristic for overcurrent protection relays. The intention is the highest possible reduction of tripping times for
Publikováno v:
2015 IEEE Eindhoven PowerTech.
Equipping one support structure with DC and AC systems in parallel can increase the transport capacity of existing transmission corridors. The constant electric field of the DC system induces a constant DC component into the AC systems in near vicini
Publikováno v:
10th IET International Conference on Developments in Power System Protection (DPSP 2010). Managing the Change.
This paper deals with the concept development and laboratory testing of an adaptive protection system for distribution networks with distributed energy resources. Adaptation of protection relay settings according to currently available short-circuit
Publikováno v:
IET Conference Publications.
Fluctuation of load and generation from distributed energy resources may impact the system protection in distribution networks. The aim of this research work is to determine in how far short-term peak loading conditions restrict the ability of a prot
Publikováno v:
IET Conference Publications.
Network security assessment is decisively based on the protection security. Dispersed generation is increasing in distribution networks. This development is affecting the protection behaviour adversely. Maloperation of protection relays becomes likel
Publikováno v:
2008 China International Conference on Electricity Distribution.
This paper deals with the protection system in distribution networks with distributed generation. It describes the dynamic influences of synchronous generators on the direction determination of protection relays during network disturbances. Therefore
Coaction of protection and distribution management systems in case of islanded distribution networks
Publikováno v:
2008 China International Conference on Electricity Distribution.
This paper describes how an adjusted coaction of protection and distribution management systems in future distribution networks can help to improve security of supply. A high penetration with distributed energy resources is considered, challenges for