scholarly journals AN OPTIMIZED ADAPTIVE OVERCURRENT RELAY PROTECTION IN DISTRIBUTION SYSTEM USING CHAOS BASED SATIN BOWERBIRD OPTIMIZATION ALGORITHM (C-SBO)

10.6036/10118 ◽  
2022 ◽  
Vol 97 (1) ◽  
pp. 64-70
Author(s):  
Manikandan Selvaraj ◽  
Manigandan Thathan
Keyword(s):  
Distributed System ◽  
Distribution System ◽  
Electrical Power ◽  
Relay Protection ◽  
Vital Role ◽  
Optimization Techniques ◽  
Phase System ◽  
Fault Current ◽  
Satin Bowerbird ◽  
Overcurrent Relay

The increased availability of protections of distributed system is a major role by ensuring the continuity of electrical power supply. The optimization process for a distributed system is to coordinate with overcurrent relay protection with adaptive overcurrent relay model. Here the protection of the system is an important factor since the protection methods play a vital role in distributed systems. The conventional methods discussed the current in the power system to reduce the fault current tolerance value by using various optimization algorithms like Antlion and Butterfly optimization techniques. The distributed three-phase system uses the IEEE bus network with adaptive overcurrent relay model, which produces the best output as compared to the conventional method. Here the particle swarm optimization (C-SBO) procedure is used to improve the relay setting and it reduces the fault current across the relay.

Penetration Capacity Analysis of Distributed Generation Considering Overcurrent Relay Protection and Flux-Coupling Type FCL

2014 ◽  
Vol 1070-1072 ◽  
pp. 923-928
Author(s):  
Peng Sun ◽  
Ming Wu Luo ◽  
Zhao Xia Sun ◽  
Tian Ci Liu ◽  
Chang Hong Deng ◽  
...  
Keyword(s):  
Distributed Generation ◽  
Rapid Development ◽  
Distribution Network ◽  
Relay Protection ◽  
Negative Influence ◽  
Capacity Analysis ◽  
Fault Current ◽  
Flux Coupling ◽  
Overcurrent Relay ◽  
Coupling Type

In light of the rapid development of the electric power grid, the integrated application of distributed generation (DG) units can be considered as a key driver. Nevertheless, along with large number of DG units are connected into a distribution network, maybe different kinds of effects are accordingly induced. In particular, regarding the configured relay protection, its selectivity and sensitivity may be affected. In this paper, the penetration capacity analysis of DG considering overcurrent relay protection and flux-coupling type FCL is conducted. Under different fault conditions, the theoretical impacts of introducing DG on the fault current are investigated, and a flux-coupling type FCL is suggested to limit the fault current and potentially enhance the DG’s access capacity. Furthermore, the detailed simulation model of a typical distribution network integrated with the DG and FCL is created. From the simulation results, the employment of the FCL can effectively reduce the fault current’s negative influence on the DG, and improve the DG’s access capacity to a certain extent.

scholarly journals Frequent Subgraph Mining by Giraph Distributed System

2020 ◽  
Vol 9 (5) ◽  
pp. 1267-1275
Keyword(s):  
Distribution System ◽  
Graph Mining ◽  
Vital Role ◽  
Optimization Techniques ◽  
Frequent Subgraph Mining ◽  
Subgraph Mining ◽  
Frequent Subgraph ◽  
Social Graphs ◽  
And Performance ◽  
Set Up

To overcome the challenges for managing the rapid growth of social graphs, massive Distributed Graph Mining Systems are developed, such as Pregel, GiraphHama, GraphLab, PowerLab, etc. The common approach to all systems is to divide the entire Graph Dataset into smaller divisions and use it as “think like a vertex”, the programing model is to hold up a continual graph calculation. In this paper, we use the Optimized Frequent Subgraph Mining algorithm in the Giraph framework model and make a comparative study with existing different Distributed Systems. To enhance the flexibility and performance of the novel method, we carry out different optimization techniques associating it with updating different run time limits. We also investigate how the performance could be improved by Giraph Distribution System, which plays a vital role in social graphs such as LinkedIn, Twitter, Facebook, etc. The graph input, output, cluster set up and hardware configuration play vital roles in optimizing the performance of our proposed algorithm.

scholarly journals Fault Diagnosis Algorithm and Protection of Electric Power Systems in an Alternative Distribution System

2020 ◽  
Vol 1 (3) ◽  
pp. 8-16
Author(s):  
Oshin Ola Austin ◽  
Oluwasanmi Alonge ◽  
Ajayi Joseph Adeniyi
Keyword(s):  
Power Systems ◽  
Distribution System ◽  
Short Circuit ◽  
Circuit Breaker ◽  
Research Work ◽  
Short Circuit Current ◽  
Phase System ◽  
Fault Current ◽  
Circuit Breakers ◽  
Protective Devices

In any power systems, protective devices will detect fault conditions and operate circuit breakers in order to disconnect the load from the fault current and limit loss of service due to failure. This fault may involve one or more phases and the ground, or may occur between two or more phases in a three-phase systems. In ground, fault’ or ‘earth fault, current flows into the earth. In a poly-phase system, a fault may affect each of the three phases equally which is a symmetrical fault. If only some phases are affected, the resulting ‘asymmetrical fault’ becomes more complicated to analyze due to the simplifying assumption of equal current magnitude in all the phases being no longer applicable. Therefore, the prospective short circuit current of the fault can be calculated for power systems analysis procedures. This will assist in the choice of protective devices like circuit breakers, current transformers and relays. This research work evaluated and analyzed the occurrence of faults in a distribution system. Fault currents were obtained and the maximum tripping time required for the protective devices to operate were determined. Hence, it was possible to select appropriate relay and circuit breaker for effective operation of a distribution

scholarly journals Coordination of Over Current Relays in Distributed Generation

2019 ◽  
Vol 8 (2) ◽  
pp. 5836-5840
Keyword(s):  
Distributed Generation ◽  
Radial Distribution ◽  
Distribution System ◽  
Energy Sources ◽  
Fault Current ◽  
Distributed Energy ◽  
Radial Distribution System ◽  
Overcurrent Protection ◽  
Overcurrent Relays ◽  
Overcurrent Relay

The modern power system increases the power by adding Distributed Generation (DG). When distributed energy sources are added to the network, they effect the conventional fault levels and fault current paths and have been proved that the accurate operation of the overcurrent protection is not possible. This paper describes time overcurrent relay protection for radial distribution system (RDS) with DG. These time overcurrent relays is implemented by using IEC-60255 standard. The proposed protection outline is verified on a typical IEEE 13-bus radial distribution system with distributed energy source. The model of the system is replicated by using MATLAB/Simulink.

scholarly journals Optical Voltage Transformer Based on FBG-PZT for Power Quality Measurement

Sensors ◽  
2021 ◽  
Vol 21 (8) ◽  
pp. 2699
Author(s):  
Marceli N. Gonçalves ◽  
Marcelo M. Werneck
Keyword(s):  
Power System ◽  
Power Quality ◽  
Distribution System ◽  
Electrical Power ◽  
Quality Measurement ◽  
Pockels Effect ◽  
Electrical Power System ◽  
Voltage Transformer ◽  
Technical Literature ◽  
Distribution Lines

Optical Current Transformers (OCTs) and Optical Voltage Transformers (OVTs) are an alternative to the conventional transformers for protection and metering purposes with a much smaller footprint and weight. Their advantages were widely discussed in scientific and technical literature and commercial applications based on the well-known Faraday and Pockels effect. However, the literature is still scarce in studies evaluating the use of optical transformers for power quality purposes, an important issue of power system designed to analyze the various phenomena that cause power quality disturbances. In this paper, we constructed a temperature-independent prototype of an optical voltage transformer based on fiber Bragg grating (FBG) and piezoelectric ceramics (PZT), adequate to be used in field surveys at 13.8 kV distribution lines. The OVT was tested under several disturbances defined in IEEE standards that can occur in the electrical power system, especially short-duration voltage variations such as SAG, SWELL, and INTERRUPTION. The results demonstrated that the proposed OVT presents a dynamic response capable of satisfactorily measuring such disturbances and that it can be used as a power quality monitor for a 13.8 kV distribution system. Test on the proposed system concluded that it was capable to reproduce up to the 41st harmonic without significative distortion and impulsive surges up to 2.5 kHz. As an advantage, when compared with conventional systems to monitor power quality, the prototype can be remote-monitored, and therefore, be installed at strategic locations on distribution lines to be monitored kilometers away, without the need to be electrically powered.

Electrical Power Flow Improvement by Reducing Fault Current using FACTS Devices

2021 ◽  
Author(s):  
Jahin Al Hasan Joy ◽  
Md. Rafiqul Islam ◽  
Nayeema Hasan ◽  
Ibrahim Mustafa Mehedi ◽  
Muhyaddin Jamal Rawa ◽  
...  
Keyword(s):  
Power Flow ◽  
Electrical Power ◽  
Fault Current ◽  
Facts Devices ◽  
Flow Improvement

scholarly journals Protection of Sensitive Loads in Distribution Systems Using a BSFCL-DVR System

Sensors ◽  
2021 ◽  
Vol 21 (5) ◽  
pp. 1615
Author(s):  
Mehdi Firouzi ◽  
Saleh Mobayen ◽  
Hossein Shahbabaei Kartijkolaie ◽  
Mojtaba Nasiri ◽  
Chih-Chiang Chen
Keyword(s):  
Distribution System ◽  
Distribution Systems ◽  
Fault Current ◽  
Dynamic Voltage Restorer ◽  
Voltage Quality ◽  
Voltage Restorer ◽  
Point Of Common Coupling ◽  
Dynamic Voltage ◽  
Bridge Type ◽  
In The Beginning

In this paper, an incorporated bridge-type superconducting fault current limiter (BSFCL) and Dynamic Voltage Restorer (DVR) is presented to improve the voltage quality and limiting fault current problems in distribution systems. In order to achieve these capabilities, the BSFCL and DVR are integrated through a common DC link as a BSFCL-DVR system. The FCL and DVR ports of the BSFCL-DVR system are located in the beginning and end of the sensitive loads’ feeder integrated to the point of common coupling (PCC) in the distribution system. At first, the principle operation of the BSFCL-DVR is discussed. Then, a control system for the BSFCL-DVR system is designed to enhance the voltage quality and limit the fault current. Eventually, the efficiency of the BSFCL-DVR system is verified through the PSCAD/EMTDC simulation.

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