Title :
Optimized testing of modern protection equipment using transient simulation
Author :
Mempel, C. ; Cialla, B. ; Luxenburger, R.
Author_Institution :
OMICRON Electron. GmbH, Klaus, Austria
fDate :
March 29 2010-April 1 2010
Abstract :
Throughout the years different testing tools have been used successfully for all types of relays. Traditional methods like current ramping applied in many cases. These traditional methods work well with classical protection functions and equipment. But the requirements on the protection system are changing and so does the protection system; examples: (1) Increasing complexity of multifunctional equipment (2) Implementation of adaptive or intelligent protection functions (3) Growing use of individual designed protection functions and logical functions (4) Use of IEC 61850 and growing use of communication between protection lEDs. These changes allow optimization of the testing strategy. In this paper the new requirements on testing are analyzed. Based on this it is shown that testing using transient simulation is a solution. The requirements on the transient simulated signals caused by different protective functions are pointed out. Additionally the requirements on network data and models used for simulation are analyzed. The advantages of testing using transient simulation are presented for some applications. It is shown that the new method covers a larger part of the commissioning and design process. Therefore testing using transient simulations is able to find more malfunctions in the protection system. The logical procedure of systematically identifying malfunctions is demonstrated. Examples for an optimized workflow of protection testing using transient simulations are presented, although the discussed method could be used in a traditional workflow. The advantages of an adapted workflow are pointed out. The integration of transient simulation testing in a testing strategy is shown and the complete service concept of the protection system (including repairs, testing, maintenance and refurbishment) is discussed.
Keywords :
IEC standards; optimisation; power system simulation; relay protection; test equipment; IEC 61850; current ramping; individual designed protection functions; intelligent protection functions; logical functions; multifunctional equipment complexity; protection equipment optimized testing; relay protection; transient simulation testing; Application-oriented testing; black box testing; transient simulation; verification of relay settings;
Conference_Titel :
Developments in Power System Protection (DPSP 2010). Managing the Change, 10th IET International Conference on
Conference_Location :
Manchester
DOI :
10.1049/cp.2010.0340