scholarly journals Enhanced Loadability and Inapt Locations

2019 ◽  
Vol 8 (4) ◽  
pp. 3881-3888
Keyword(s):  
Power System ◽  
Distributed Generation ◽  
Distribution System ◽  
Network Reliability ◽  
Voltage Profile ◽  
Loss Minimization ◽  
Distributed Generator ◽  
Transmission Parameters ◽  
Emerging Trends ◽  
Profile Correction

: Inclusion of Distributed Generation in the power system facilitates many features like voltage profile correction, improvement of power factor, network reliability, loadability enhancement that improve the performance of the system. Vast increase in the energy requirements to cope up with emerging trends in the community, all types of loads like residential, commercial, Industrial etc demands network up gradation. The urgency of network restructuring may be differed by an appropriate deployment of Distributed Generation in the system. Whereas, it is found that improper allocation of DGs may also degrade the system performance due to increased power losses, declined voltage profile etc. Thus, now a day’s network operators are paying wide attention towards appropriate DG allocation. This paper introduces a Modified Transmission Parameters Method considering the loss minimization as a constraint, for Siting and Sizing the Distributed Generator (DG) for installation in Distribution System based on Two Port Transmission Equations. It demonstrates an implication of Distributed Generator in power system to attain the enhanced system loadability. It also analyses the number of buses swept up from the competition of being an optimal location for DG allocation. Thus, it can be said that the proposed method facilitates enhanced ability of the system to sustain load expansion without network upgrades along with evaluation reduced candidate locations for DG installation called as ‘Inapt Locations’.

scholarly journals Optimal distributed generation placement using artificial intelligence for improving active radial distribution system

2021 ◽  
Vol 10 (5) ◽  
pp. 2345-2354
Author(s):  
Fadhel A. Jumaa ◽  
Omar Muhammed Neda ◽  
Mustafa A. Mhawesh
Keyword(s):  
Artificial Intelligence ◽  
Distribution System ◽  
Power Loss ◽  
Network Reliability ◽  
Power Grids ◽  
Voltage Profile ◽  
Radial Distribution System ◽  
Distributed Generator ◽  
Optimum Position ◽  
Arbitrary Location

There are several profits of distributed generator (DG) units which are believed for improving the safety of the distribution power grids. However, these profits can be maximized by ensuring optimum sizing and positioning of DG units because an arbitrary location of DG units may adversely affect and jeopardize power grids which could contribute to maximising of power loss and degradation of the voltage profile. Therefore, several approaches were suggested to ensure optimum position and size of DGs. The primary aim of this article is for establishing technique for optimum scheduling and operating of DG to lessen power loss, revamp voltage profile and overall network reliability. Artificial intelligence method called particle swarm optimization (PSO) is utilized for finding the best site and size of DG to lessen power loss and boost the voltage profile. In this paper, IEEE 33 distribution system is utilized to display applicability of PSO. The results of the PSO are compared with the results gotten by other methods in the literature. Finally, the results show that the PSO is superior than the other methods.

scholarly journals Loss Minimization of Power Distribution Network using Different Types of Distributed Generation Unit

2015 ◽  
Vol 5 (5) ◽  
pp. 918
Author(s):  
Su Hlaing Win ◽  
Pyone Lai Swe
Keyword(s):  
Power System ◽  
Distributed Generation ◽  
Radial Distribution ◽  
Distribution System ◽  
Reactive Power ◽  
Distribution Network ◽  
Loss Reduction ◽  
Voltage Profile ◽  
Optimum Location ◽  
Power Losses

A Radial Distribution network is important in power system area because of its simple design and reduced cost. Reduction of system losses and improvement of voltage profile is one of the key aspects in power system operation. Distributed generators are beneficial in reducing losses effectively in distribution systems as compared to other methods of loss reduction. Sizing and location of DG sources places an important role in reducing losses in distribution network. Four types of DG are considered in this paper with one DG installed for minimize the total real and reactive power losses. The objective of this methodology is to calculate size and to identify the corresponding optimum location for DG placement for minimizing the total real and reactive power losses and to improve voltage profile   in primary distribution system. It can obtain maximum loss reduction for each of four types of optimally placed DGs. Optimal sizing of Distributed Generation can be calculated using exact loss formula and an efficient approach is used to determine the optimum location for Distributed Generation Placement.  To demonstrate the performance of the proposed approach 36-bus radial distribution system in Belin Substation in Myanmar was tested and validated with different sizes and the result was discussed.

scholarly journals Optimal Siting of Distributed Generation Unit in Power Distribution System considering Voltage Profile and Power Losses

2022 ◽  
Vol 2022 ◽  
pp. 1-14
Author(s):  
Muhammad Aamir Aman ◽  
Xin Cheng Ren ◽  
Wajahat Ullah Khan Tareen ◽  
Muhammad Abbas Khan ◽  
Muhammad Rizwan Anjum ◽  
...  
Keyword(s):  
Power System ◽  
Electric Power ◽  
Distributed Generation ◽  
Power Distribution ◽  
Distribution System ◽  
Total Power ◽  
Test Case ◽  
Voltage Profile ◽  
Power Losses ◽  
Power Distribution System

Many underdeveloped countries are facing acute shortage of electric power and short term measures are important to consider to address the problems of power outage, power plant failures, and disaster areas. Distributed generation (DG) is a promising approach for such cases as it allows quick on-site installation and generation of electric power. Injection of DG can improve the system voltage profile and also reduce the system's total power losses. However, the placement and sizing of the DG unit is an optimization problem in the radial distribution system. As a test case, this study examines voltage profile improvement and system power losses for an 11 KV residential feeder at the Abdul Rehman Baba grid station in Pakistan, which is modelled using the Electrical Transient Analyzer Program (ETAP). For various scenarios, several tests are conducted to assess the effects of DG on the distribution system. The results show that proper design considerations of size and location of a DG, to be inserted in to the system, lead to significant reduction in power losses and improvement in voltage profile and thus improvement in the overall efficiency of the power system. The projections of this work can be used to optimize the expansion of a power system and tackling different issues related to voltage profile in distribution sector worldwide.

scholarly journals Voltage Profile Improvement of Distribution System via Integration of Distributed Generation Resources

2021 ◽  
Vol 1 (1) ◽  
pp. 33
Author(s):  
Biswas Babu Pokhrel ◽  
Ashish Shrestha ◽  
Sudip Phuyal ◽  
Shailendra Kumar Jha
Keyword(s):  
Ant Colony Optimization ◽  
Distributed Generation ◽  
Power Supply ◽  
Distribution System ◽  
Load Flow ◽  
Voltage Profile ◽  
Radial Distribution System ◽  
Distributed Generator ◽  
Sweep Algorithm ◽  
Voltage Profile Improvement

This study attempts to identify the causes and possible solutions for voltage profile issues in the lower land of Nepal, and is specifically focused on Laukahi feeder, a radial distribution system with an approximate length of 65 km and distributed at 11KV system voltage. Currently, the end-users feeding through this feeder are getting extremely poor voltage along with frequent interruptions in the power supply. In this study, a forward/ backward sweep algorithm is used to analyze the load flow of the distribution system, whereas ant colony optimization (ACO) technique is used to identify the best location for the Distributed Generator (DG) penetrations. After completion of this study, it is found that, the branch loss of the feeder can be reduced up to 87.22%, and voltage profile can be improved from 0.828 pu to 0.982 pu by integrating some form of DGs.

scholarly journals Reliability / Security of Distribution System Network under Supporting by Distributed Generation

2019 ◽  
Vol 2 (1) ◽  
pp. 1 ◽  
Author(s):  
Ali M. Eltamaly ◽  
Yehia Sayed Mohamed ◽  
Abou-Hashema M. El-Sayed ◽  
Amer Nasr A. Elghaffar
Keyword(s):  
Renewable Energy ◽  
Power System ◽  
Distribution System ◽  
Reactive Power ◽  
System Quality ◽  
Voltage Profile ◽  
Power Losses ◽  
Distributed Generator ◽  
Energy Technologies ◽  
The Impact

<p>This paper discusses the impact of Distributed Generator (DG) on the power system for enhancing the power system quality by improving the voltage profile and power losses reduction. With the increasing on the demand power and the power system extension, the distributed renewable energy technologies are becoming increasingly important in the energy supply systems of many countries. DGs units can be defined as a small-units that generate electric power near to the location of customers based on the renewable energy techniques, including wind energy, solar energy, and geothermal energy. Interconnecting DG to an existing distribution system provides various benefits to several entities as for example the owner, utility and the final user. DG provides an enhanced power quality, higher reliability of the distribution system and can peak shaves and fill valleys. However, the integration of DG into existing networks has associated several technical, economic and regulatory questions. Also, this paper uses the power system IEEE-12 busses for an example to illustrate the voltage control and decreases the active and reactive power losses by adding the wind generation DGs with the distribution network. </p>

scholarly journals Optimal Harmonic Mitigation in Distribution Systems with Inverter Based Distributed Generation

2021 ◽  
Vol 11 (2) ◽  
pp. 774 ◽  
Author(s):  
Ahmed S. Abbas ◽  
Ragab A. El-Sehiemy ◽  
Adel Abou El-Ela ◽  
Eman Salah Ali ◽  
Karar Mahmoud ◽  
...  
Keyword(s):  
Power Quality ◽  
Distributed Generation ◽  
Distribution System ◽  
Distribution Systems ◽  
Renewable Energy Sources ◽  
Harmonic Distortion ◽  
Planning Problem ◽  
Voltage Profile ◽  
Harmonic Mitigation ◽  
The Impact

In recent years, with the widespread use of non-linear loads power electronic devices associated with the penetration of various renewable energy sources, the distribution system is highly affected by harmonic distortion caused by these sources. Moreover, the inverter-based distributed generation units (DGs) (e.g., photovoltaic (PV) and wind turbine) that are integrated into the distribution systems, are considered as significant harmonic sources of severe harmful effects on the system power quality. To solve these issues, this paper proposes a harmonic mitigation method for improving the power quality problems in distribution systems. Specifically, the proposed optimal planning of the single tuned harmonic filters (STFs) in the presence of inverter-based DGs is developed by the recent Water Cycle Algorithm (WCA). The objectives of this planning problem aim to minimize the total harmonic distortion (THD), power loss, filter investment cost, and improvement of voltage profile considering different constraints to meet the IEEE 519 standard. Further, the impact of the inverter-based DGs on the system harmonics is studied. Two cases are considered to find the effect of the DGs harmonic spectrum on the system distortion and filter planning. The proposed method is tested on the IEEE 69-bus distribution system. The effectiveness of the proposed planning model is demonstrated where significant reductions in the harmonic distortion are accomplished.

scholarly journals Integrating the PV-Diesel Hybrid System for Reliability Improvement in Distribution System

2019 ◽  
Vol 3 (2) ◽  
Author(s):  
Cho Cho Myint ◽  
Ohn Zin Lin ◽  
Soe Soe Ei Aung
Keyword(s):  
Power Generation ◽  
Distributed Generation ◽  
Hybrid System ◽  
System Reliability ◽  
Distribution System ◽  
Voltage Drop ◽  
Load Condition ◽  
Voltage Profile ◽  
Hydro Power ◽  
Reliability Indices

In Myanmar, as the main power generation is hydro power generation. the utility cannot supply sufficient power to customers during the dry season. Besides interruptions occur frequently due to aging system and lack of prospered protection. Therefore, reliability is an urgent issue in Myanmar. As a result of unbalance between generation and load, the distribution system is getting poor voltage profile, instability and high power losses in high load condition. According to network characteristics, the failure of a component always leads to consequence interruption in a radial distribution system.  Therefore, it is a must consideration to mitigate these challenges to enhance the system reliability. There are many techniques to solve the reliability problems such as reclosers, switching devices (manual and automated switches), system reconfiguration, feeder re-conducting and integration of distributed generation (DG). In this paper, system reliability assessment is evaluated in detail with the integration of the distributed generation such as PV-Diesel Hybrid System. The location of DG is chosen according to the expected energy not supply (EENS) and the voltage drop in proposed system. Next, the optimal sizing of DG is chosen depends on the penetration level of generator. Reliability indices can be evaluated depending on the failure rate(λ), repair time(r) and annual outage time(U) in Electrical Transient and Analysis Program (ETAP) software. The case study of this thesis is carried out in 33/11 kV network which is connected Kyatminton Substation, Kyaukse, Middle Myanmar.

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