A review of transient effects of different types of distributed generation units on overcurrent protection system

2013 ◽  
Author(s):  
Y. Firouz ◽  
F. Vallee ◽  
O. Durieux ◽  
J. Lobry
Keyword(s):  
Distributed Generation ◽  
Protection System ◽  
Transient Effects ◽  
Overcurrent Protection ◽  
Different Types

scholarly journals Optimal Allocation of Distributed Generation Considering Protection

Energies ◽  
2020 ◽  
Vol 13 (9) ◽  
pp. 2402 ◽  
Author(s):  
Hamza M. Bakr ◽  
Mostafa F. Shaaban ◽  
Ahmed H. Osman ◽  
Hatem F. Sindi
Keyword(s):  
Distributed Generation ◽  
Distribution System ◽  
Distribution Systems ◽  
Optimal Allocation ◽  
Planning Horizon ◽  
Economic Benefits ◽  
Protection System ◽  
Dynamic Approach ◽  
Different Types ◽  
Typical Distribution

The integration of distributed generation (DG) into the power grid has increased in recent years due to its techno-economic benefits for utilities and consumers. However, due to the fact that distribution systems were not originally designed to accommodate such DG units, many challenges are being faced by utilities to seamlessly integrate them into their systems. One of the critical challenges is their effect on protection system settings and coordination. The DG units will affect the pickup current settings of the protection relays, coordination between the primary and secondary relays, and even the direction of the fault current. Failing to consider DG’s effect on the protection system may lead to serious equipment damage or system failure, causing huge financial setbacks for utilities. To that end, this work proposes a new dynamic approach to optimally allocate different types of DG units over the planning horizon. The objective is to minimize the overall costs of the system while taking into consideration the intermittent nature of renewable DG and the impacts on the protection system. Simulation results have been developed on a typical distribution system to prove the effectiveness of the proposed approach.

Centralized adaptive directional overcurrent protection system for a microgrid with relay coordination

2020 ◽  
Author(s):  
P.P.R. Padamathilaka ◽  
E.M.A.G.N.C. Ekanayake ◽  
T.S.S. Senarathna ◽  
A.G.N. Dulmini ◽  
A.P.R. Prabash ◽  
...  
Keyword(s):  
Protection System ◽  
Overcurrent Protection ◽  
Relay Coordination

Protection Scheme for Distribution Network with Distributed Generation

2014 ◽  
Vol 960-961 ◽  
pp. 1376-1380
Author(s):  
Chong Xin Xu ◽  
Yan Jun Jiao
Keyword(s):  
Power Generation ◽  
Distributed Generation ◽  
Distribution System ◽  
Distribution Network ◽  
Protection System ◽  
Protection Scheme ◽  
Network Protection ◽  
New Energy ◽  
Comprehensive Judgment

Power generation becomes a main way of using new energy. However, the access of distributed generation(DG) causes the ordinary protection system develop a series of problems. In this paper, the structure of distribution network with DG is introduced firstly.Secondly,it is analysed that the effect that DG brings to distribution network protection, and then a new protection scheme of distribution network with DG is put forward. The segment I, II of direction three-current protection on the line which is at the upstream of DG, and the next line’s segment I, II consists of a simple communication unit. Through the comprehensive judgment of two protections’ action results, fault can be isolated in minimum range quickly and accurately. Finally, the correctness and feasibility of the new protection principle are verified by simulating a 10KV distribution system.

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