Investigation of The DGs Effect on The Coordination Between Protective Elements in Distribution Network

• abdallah Reda

  Zagazig University, Egypt

  https://orcid.org/0000-0002-2623-2171

  Author

• M. Farahat

  Zagazig University, Egypt

  Author

• Amal F. Abdelgawad

  Zagazig University, Egypt

  Author

• A.T.M Taha

  Ain Shams University, Egypt

  Author

Addition of Distributed Generators (DGs) to the electric network have more advantages to the network. It improves the voltage profile and the power flow in the network. In the last decade, DGs is used in power system, especially the distribution system. Coordination study for protective devices must be performed on the distribution network with DGs to reach selectivity with minimum clearance time of fault. Due to DG insertion to the electric system, the short circuit level is changed and coordination between protective elements should be done. This paper presents a technique to avoid the miscoordination problem between protective devices due to the impact of DG units insertion without any additional costs. The proposed technique depend on activating and updating the setting of network relays to achieve correct coordination. Also, it doesn't need any additional costs or any additional equipement to be installed in the electric network. This paper make studies on a real radial system of power transformer with its feeders of a 66kV utility substation before and after adding DGs. ETAP software is used to simulate the network under study.

1. abdallah Reda, Zagazig University, Egypt

   Electrical power and machines engineering

2. M. Farahat, Zagazig University, Egypt

   Department of Electrical Power & Machines Engineering, Faculty of Engineering

3. Amal F. Abdelgawad , Zagazig University, Egypt

   Department of Electrical Power & Machines Engineering, Faculty of Engineering

4. A.T.M Taha, Ain Shams University, Egypt

   Department of Electrical Power & Machines Engineering, Faculty of Engineering

• PDF

Copyright (c) 2019 abdallah Reda, M.Farahat, Amal F.Abdelgawad , M Taha

This work is licensed under a Creative Commons Attribution-NoDerivatives 4.0 International License.

Copyrights for articles published in IJIER journals are retained by the authors, with first publication rights granted to the journal. The journal/publisher is not responsible for subsequent uses of the work. It is the author's responsibility to bring an infringement action if so desired by the author for more visit Copyright & License.