scholarly journals Protection Coordination of Properly Sized and Placed Distributed Generations–Methods, Applications and Future Scope

2018 ◽  
Author(s):  
Sunny Katyara ◽  
Lukasz Staszewski ◽  
Zbigniew Leonowicz
Keyword(s):  
Distributed Generation ◽  
Distribution System ◽  
Power Flow ◽  
Distribution Networks ◽  
System Stability ◽  
Distributed Generations ◽  
High Penetration ◽  
Multi Agent ◽  
Utility Network ◽  
Radial Distribution Networks

The radial distribution networks are designed for unidirectional power flows and are passive in nature. However, with the penetration of Distributed Generation (DG), the power flow becomes bidirectional and the network becomes active. The integration of DGs into distribution network creates many issues with: system stability, protection coordination, power quality, islanding, proper placement and sizing etc. Among these issues, the two most significant are optimal sizing and placement of DGs and their protection coordination in utility network. The proper coordination of relays with high penetration of DGs placed at optimal location increases the availability and reliability of the network during abnormal operating conditions.This research addresses most of the available methods for efficient sizing and placement of DGs in distribution system (numerical, analytical and heuristic) as well as the developed protection coordination techniques for utility networks in the presence of DGs (Artificial Intelligence (AI), adaptive and non-adaptive, multi-agent, hybrid). This paper indicates the possible research gaps and highlights the applications possibilities and methods’ limitations in the area of DGs.

scholarly journals Protection Coordination of Properly Sized and Placed Distributed Generations–Methods, Applications and Future Scope

2018 ◽  
Author(s):  
Sunny Katyara ◽  
Lukasz Staszewski ◽  
Zbigniew Leonowicz
Keyword(s):  
Distributed Generation ◽  
Distribution System ◽  
Power Flow ◽  
Distribution Networks ◽  
System Stability ◽  
Distributed Generations ◽  
High Penetration ◽  
Multi Agent ◽  
Utility Network ◽  
Radial Distribution Networks

The radial distribution networks are designed for unidirectional power flows and are passive in nature. However, with the penetration of Distributed Generation (DG), the power flow becomes bidirectional and the network becomes active. The integration of DGs into distribution network creates many issues with: system stability, protection coordination, power quality, islanding, proper placement and sizing etc. Among these issues, the two most significant are optimal sizing and placement of DGs and their protection coordination in utility network. The proper coordination of relays with high penetration of DGs placed at optimal location increases the availability and reliability of the network during abnormal operating conditions.This research addresses most of the available methods for efficient sizing and placement of DGs in distribution system (numerical, analytical and heuristic) as well as the developed protection coordination techniques for utility networks in the presence of DGs (Artificial Intelligence (AI), adaptive and non-adaptive, multi-agent, hybrid). This paper indicates the possible research gaps and highlights the applications possibilities and methods’ limitations in the area of DGs.

scholarly journals Protection Coordination of Properly Sized and Placed Distributed Generations–Methods, Applications and Future Scope

Energies ◽  
2018 ◽  
Vol 11 (10) ◽  
pp. 2672 ◽  
Author(s):  
Sunny Katyara ◽  
Lukasz Staszewski ◽  
Zbigniew Leonowicz
Keyword(s):  
Distribution System ◽  
Power Flow ◽  
Distribution Networks ◽  
Operating Conditions ◽  
System Stability ◽  
Distributed Generations ◽  
High Penetration ◽  
Multi Agent ◽  
Utility Network ◽  
Abnormal Operating Conditions

The radial distribution networks are designed for unidirectional power flows and are passive in nature. However, with the penetration of Distributed Generation (DG), the power flow becomes bidirectional and the network becomes active. The integration of DGs into distribution network creates many issues with: system stability, protection coordination, power quality, islanding, proper placement and sizing etc. Among these issues, the two most significant are optimal sizing and placement of DGs and their protection coordination in utility network. The proper coordination of relays with high penetration of DGs placed at optimal location increases the availability and reliability of the network during abnormal operating conditions. This research addresses most of the available methods for efficient sizing and placement of DGs in distribution system (numerical, analytical and heuristic) as well as the developed protection coordination techniques for utility networks in the presence of DGs (Artificial Intelligence (AI), adaptive and non-adaptive, multi-agent, hybrid). This paper indicates the possible research gaps and highlights the applications possibilities and methods’ limitations in the area of DGs.

Research on the Voltage Influence of Active Distribution Network with Distributed Generation Access

2014 ◽  
Vol 668-669 ◽  
pp. 749-752 ◽  
Author(s):  
Xiao Yi Zhou ◽  
Ling Yun Wang ◽  
Wen Yue Liang ◽  
Li Zhou
Keyword(s):  
Distributed Generation ◽  
Power Distribution ◽  
Distribution System ◽  
Power Flow ◽  
Distribution Network ◽  
Distribution Networks ◽  
Power Distribution Network ◽  
Active Distribution Network ◽  
Novel Approach ◽  
Active Distribution Networks

Distributed generation (DG) has an important influence on the voltage of active distribution networks. A unidirectional power distribution network will be transformed into a bidirectional, multiple power supply distribution network after DGs access to the distribution network and the direction of power flow is also changed. Considering the traditional forward and backward substitution algorithm can only deal with the equilibrium node and PQ nodes, so the other types of DGs should be transformed into PQ nodes, then its impact on active distribution network can be analyzed via the forward and backward substitution algorithm. In this paper, the characteristics of active distribution networks are analyzed firstly and a novel approach is proposed to convert PI nodes into PQ nodes. Finally, a novel forward and backward substitution algorithm is adopted to calculate the power flow of the active distribution network with DGs. Extensive validation of IEEE 18 and 33 nodes distribution system indicates that this method is feasible. Numerical results show that when DG is accessed to the appropriate location with proper capacity, it has a significant capability to support the voltages level of distribution system.

A Heuristic Analysis Method for the Impact of DGs to Power System Reliability

2014 ◽  
Vol 986-987 ◽  
pp. 187-191
Author(s):  
Bo Zeng ◽  
Kai Wang ◽  
Xiang Yu Kong ◽  
Yi Zeng ◽  
Qun Yang
Keyword(s):  
Distributed Generation ◽  
System Reliability ◽  
Power Distribution ◽  
Distribution System ◽  
Simulation Analysis ◽  
Analysis Method ◽  
Distributed Generations ◽  
Power Distribution System ◽  
High Penetration ◽  
The Impact

With high penetration of distributed generation connected to the grid, distribution system will have some huge impacts, and system reliability calculation models and assessment methods are changing. Based on Monte-Carlo method, a heuristic reliability analysis method for distribution system with distributed generations was proposed in the paper, which focuses on the mode of distributed generation in parallel to system power supply. Functional role of distributed generation in the power distribution system failure and distributed power adapter with load strategies were analyzed in this method. Cases simulation analysis was used to verify its effectiveness.

scholarly journals DISTRIBUTED GENERATION IMPACT ON DISTRIBUTION NETWORKS: A REVIEW

2014 ◽  
pp. 190-194
Author(s):  
GOPIYA NAIK. S ◽  
D. K. KHATOD ◽  
M. P. SHARMA
Keyword(s):  
Distributed Generation ◽  
Power Distribution ◽  
Distribution System ◽  
Power Flow ◽  
Distribution Networks ◽  
Loss Reduction ◽  
Power Distribution System ◽  
Power Loss Reduction ◽  
Planning Methods ◽  
Voltage Support

The concept of traditional distribution networks with unidirectional power flow is weakening due to large penetration of Distributed Generation (DG). The penetration of DG may impact the operation of a distribution network in both beneficial and detrimental ways. Some of the positive impacts of DG are voltage support, power loss reduction, support of ancillary services and improved reliability, whereas negative ones include protection coordination, dynamic stability and islanding. Therefore, proper planning methods that evaluate the composite impacts, i.e. technical, economical and environmental impacts of DG integration to existing distribution networks are very much essential. This paper presents a critical review of various impacts of DG on power distribution system. For ease of reference and to facilitate better understanding this literature is categorized and discussed under five major headings.

Modeling of Distributed Generation in Power Flow Calculations on Distribution Networks

2012 ◽  
Vol 263-266 ◽  
pp. 3387-3392
Author(s):  
Guan Wang ◽  
Wan Lin Gao ◽  
Kun Wang ◽  
Yuan Jing He
Keyword(s):  
Distributed Generation ◽  
Power Flow ◽  
Theoretical Foundation ◽  
Theoretical Models ◽  
Distribution Networks ◽  
Research Area ◽  
Power Equipment ◽  
Distributed Generations ◽  
New Challenges ◽  
Distribution Generation

Distributed Generation that is usually installed in the client or near them is a kind of power equipment whose capacity is generally small in the tens of kilowatts to tens of megawatts, which becomes a hot research area at home and abroad in recent years. The method for power flow calculations on distribution networks face new challenges because of the access of distribution generation, while, modeling of distribution generation is the basis and precondition for the research of power flow calculations on distribution networks with distributed generations. The article studies the modeling of distributed generations in power flow calculations, anylies most distributed generation forms, focuses on the interpretation of the principle and essence of them, and establishes theoretical models apply to the flow calculations. The modeling lay a solid theoretical foundation for the power calculations on distribution networks with distributed generations.

Power Flow Calculation Based on Power Losses Sensitivity for Distribution System with Distributed Generation

2013 ◽  
Vol 391 ◽  
pp. 295-300 ◽  
Author(s):  
Na Li ◽  
Yong Gang Li ◽  
Qing Jie Zhou
Keyword(s):  
Distributed Generation ◽  
Distribution System ◽  
Power Flow ◽  
First Generation ◽  
Distribution Network ◽  
Load Flow ◽  
Basic Premise ◽  
Flow Calculation ◽  
Distributed Generations ◽  
Load Flow Calculation

The introduction of distributed generation (DG) into distribution network will greatly impact on its operation and security inevitably, load flow calculation with distributed generations is the basic premise for the optimization planning and operation of distribution network, so the power flow in distribution network containing DG should be calculated .This paper analyzes several common DG in the former back flow calculation and mathematical model, with the first generation method fail to deal with PV node problem, improves back/forward substitution method based on node-layer, the branch search method is presented to form node impedance matrix to modify the PV node reactive injection. so that it can effectively deal with PV nodes, and the program written by matlab7.1, several schemes are designed for the different modes of DGS and are tested in IEEE33 node system and verifies the feasibility of the method, the reliability of the program.

scholarly journals A Quasioppositional-Chaotic Symbiotic Organisms Search Algorithm for Distribution Network Reconfiguration with Distributed Generations

2021 ◽  
Vol 2021 ◽  
pp. 1-13
Author(s):  
Minh-Tuan Nguyen Hoang ◽  
Bao-Huy Truong ◽  
Khoa Truong Hoang ◽  
Khanh Dang Tuan ◽  
Dieu Vo Ngoc
Keyword(s):  
Distributed Generation ◽  
Search Algorithm ◽  
Distribution Network ◽  
Distribution Networks ◽  
Network Reconfiguration ◽  
Symbiotic Organisms Search ◽  
Distributed Generations ◽  
Distribution Network Reconfiguration ◽  
Radial Distribution Networks ◽  
Symbiotic Organisms

This study suggests an enhanced metaheuristic method based on the Symbiotic Organisms Search (SOS) algorithm, namely, Quasioppositional Chaotic Symbiotic Organisms Search (QOCSOS). It aims to optimize the network configuration simultaneously and allocate distributed generation (DG) subject to the minimum real power loss in radial distribution networks (RDNs). The suggested method is developed by integrating the Quasiopposition-Based Learning (QOBL) as well as Chaotic Local Search (CLS) approaches into the original SOS algorithm to obtain better global search capacity. The proposed QOCSOS algorithm is tested on 33-, 69-, and 119-bus RDNs to verify its effectiveness. The findings demonstrate that the suggested QOCSOS technique outperformed the original SOS and provided higher-quality alternatives than many other methods studied. Accordingly, the proposed QOCSOS algorithm is favourable in adapting to the DG placement problems and optimal distribution network reconfiguration.

scholarly journals OPF-based Active Network Management Strategy for Distribution Networks with High Penetration of Distributed Generation

2020 ◽  
Author(s):  
Celso Rocha ◽  
Paulo Radatz ◽  
Carlos Almeida ◽  
Nelson Kagan
Keyword(s):  
Network Management ◽  
Distributed Generation ◽  
Power Flow ◽  
Low Voltage ◽  
Distribution Networks ◽  
Active Network ◽  
Medium Voltage ◽  
Pv Systems ◽  
High Penetration ◽  
Three Phase

This paper presents a near real-time strategy for Active Network Management (ANM) considering distribution networks with high penetration of Distributed Generation (DG). It is built upon a centralized framework and availability of a broad communication infrastructure. Generation curtailment level of Medium Voltage (MV), residential and commercial-scale Photovoltaic (PV) systems are considered as control variables to manage voltage and asset loading levels in MV and Low-Voltage (LV) distribution networks through a three-phase unbalanced Non-Linear (NL) Optimum Power Flow (OPF) algorithm. The effectiveness of the strategy in maintaining the regulatory operational levels, its robustness and the effect of the processing and communication delays are assessed by simulating a real Brazilian network with 788 control elements.

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