%0 Journal Article
%T Testing through Fall of Potential with High Current Injection in Grounding System in Transmission Line of 500 kV of Santo Antonio HPS
%A Carlos Magno B. ArašČjo
%A Luiz H. P. C. Trondoli
%J Open Access Library Journal
%V 4
%N 1
%P 1-19
%@ 2333-9721
%D 2017
%I Open Access Library
%R 10.4236/oalib.1103323
%X <div style="text-align:justify;">
	<span style="line-height:1.5;">This paper presents the application of grounding resistance
measurement by fall of potential with high current injection, applied to the Transmission
Line (TL) of 500 kV of Santo
Antonio Hydroelectric Power Station (HPS), located in the city of Porto Velho/RO,
for the commissioning of the power house grounding system in Generation Group (GG2)
and TL during construction of the referred project. Based on measurements obtained
in field, computer simulations were performed to assess the effectiveness of the
grounding system on future fault scenarios of the TL, as well as the suitability
of relevant protection functions. The computer simulations are based on the model developed
for TL 500 kV of GG2,
and are performed
using the PSCAD/EMTDC software, including the grounding values derived from the
design </span><span style="line-height:1.5;">of high current injection, according to (IEEE Std 80-2013). In order to attest
the efficacy of both GG2 grounding system and TL from the HPS, COMTRADE files, obtained
by the software, were used in the simulator Doble 6150 for the design of distinct
fault conditions in a SEL-421 relay. Results indicate the correct functioning of
relay SEL-421, corroborating the effectiveness of both grounding system and measurement
method.</span>
</div>
%K Hydroelectric Power Station
%K Grounding System
%K Fall of Potential with High Current Injection
%K Digital Control and Protection
%K Madeira River
%U http://www.oalib.com/paper/5280827