Adaptive Distance Protection Scheme Setting in Presence of SVC Using Remote Terminal Unit
| Autor: | Ngozi Clara Eli-Chukwu, Uma Uzubi Uma, Daniel Nmadu, Arthur Ekwue |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Computer science
business.industry 020209 energy 020208 electrical & electronic engineering 02 engineering and technology Current transformer law.invention Electric power system Electric power transmission Software Terminal (electronics) Control theory Relay law Transmission line 0202 electrical engineering electronic engineering information engineering Maximum power transfer theorem Electrical and Electronic Engineering business |
| Zdroj: | Journal of Electrical Engineering & Technology. 16:1867-1877 |
| ISSN: | 2093-7423 1975-0102 |
| DOI: | 10.1007/s42835-021-00731-7 |
| Popis: | FACTS devices are presently used to improve the power transfer capability of a transmission line and voltage stability of a power system network. Shunt injected current (Ish) by the Static Var Compensators (SVC) causes underreach or overreach of distance relay when not considered during relay calibration of protection system. This paper presents an adaptive relay setting procedure in the presence of a SVC connected at the midpoint of a transmission line. The remote terminal unit RTU is connected to the SVC terminal via a current transformer (CT) measures the injected shunt current when the SVC is the switch in or out of the network and transferred the measured value to the local station via fiber optic. The PSCAD/ EMTDC software is used to model an adaptive relay that implements the conventional and adaptive relay system settings. The proposed scheme presents a hybrid distance protection system whose setting is based on the prevailing SVC switching conditions; the relay system was implemented using mho characteristics relay. The results obtained show that the proposed scheme has a high accurate setting. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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