scholarly journals Integration of a Heuristic Multi-Agent Protection System into a Distribution Network Interconnected with Distributed Energy Resources

Energies ◽  
2020 ◽  
Vol 13 (20) ◽  
pp. 5250
Author(s):  
Pejman Peidaee ◽  
Akhtar Kalam ◽  
Juan Shi
Keyword(s):  
Real World ◽  
Distribution Network ◽  
Wind Farms ◽  
Distribution Networks ◽  
Protection System ◽  
Operation Conditions ◽  
Protection Systems ◽  
Multi Agent ◽  
And Performance ◽  
Doubly Fed

In conventional method protection schemes are devised for certain operation conditions with fixed settings throughout their operation life, however, protection systems in interconnected distribution networks rely on a detailed analysis of fault current contribution and variation in operation conditions under real-world scenarios. In fact, the concept of Adaptive Protection System (APS) and possibility of the adjustment for protection settings within modern Intelligent Electronic Devices (IEDs) have introduced desired functionalities for protection systems to cope with complex operation scenarios envisioned within future power system networks. In this paper, a novel protection system based on Multi-Agent System (MAS) and heuristic decision-making is proposed to update protection settings of the protection IEDs with respect to prevailing operation conditions in an interconnected distribution network. The adopted methodology is reliant on real-time simulation of a distribution network interconnected with Doubly-fed Induction Generator (DFIG) wind farms where different fault scenarios are applied to evaluate the functionality and performance of the proposed Multi-Agent Protection System (MAPS). In addition to that, combination of knowledge sharing between different protection IEDs and logic reasoning are integrated to fulfill protection task under real-world operation scenarios. The significance of the proposed MAPS is the improvement in protection system of the interconnected distribution network.

Protection System Monitoring in Electric Networks with Embedded Generation Using Petri Nets

2008 ◽  
Vol 9 (6) ◽  
Author(s):  
Vito Calderaro ◽  
Vincenzo Galdi ◽  
Antonio Piccolo ◽  
Pierluigi Siano
Keyword(s):  
Petri Nets ◽  
Distribution Systems ◽  
Short Circuit ◽  
Distribution Network ◽  
Distribution Networks ◽  
Protection System ◽  
Electric Networks ◽  
Embedded Generation ◽  
Network Operation ◽  
Monitoring Architecture

The connection of distributed generation (DG) essentially changes the distribution network operation and creates a range of well-documented effects varying the voltage levels and short circuit currents. Among others, DG can alter protection system operations in distribution networks, leading to the failure of reclosing, the disconnection of the healthy feeder or the prevention of a protection operation. This paper proposes a procedure, based on Petri nets and supported by a centralized monitoring architecture, for monitoring failures of the protection systems in radial distribution networks. Some case studies applied to a real Italian distribution network proved the effectiveness of the proposed procedure that can therefore represent an effective solution to improve distribution systems reliability in the presence of DG.

A Novel Modulated Power Filter Compensator for Distribution Networks with Distributed Wind Energy

2007 ◽  
Vol 8 (3) ◽  
Author(s):  
Adel M Sharaf ◽  
Weihua Wang ◽  
Ismail H. Altas
Keyword(s):  
Wind Energy ◽  
Power Quality ◽  
Wind Farms ◽  
Distribution Networks ◽  
Remote Communities ◽  
Power Filter ◽  
Operation Conditions ◽  
Power Quality Improvement ◽  
Electrical Distribution Networks ◽  
Fully Connected

During the last two decades, renewable wind energy has become increasingly popular as a consequence of strong ecological concerns and appealing advantages with regard to economical energy solutions in remote communities. Furthermore, with very large wind farms emerging, the dispersed renewable wind energy is required to be fully connected to the electrical distribution networks. However, the integration of dispersed renewable wind energy will pose a great challenge to the power quality in the distribution networks when the weak nature of the grid in remote areas and the uncertainty of wind are taken into consideration.This paper presents a novel Modulated Power Filter Compensator (MPFC) for the distribution networks with dispersed renewable wind energy interfaced. A tri-loop error driven controller is used to adjust the PWM switching of the modulated power filter compensator. Full power factor correction and power quality improvement is validated under different operation conditions, like load switching and wind velocity excursions. The MPFC device is a member of novel FACTS based compensators developed by the first author.

scholarly journals Fractional-Order PI Control of DFIG-Based Tidal Stream Turbine

2020 ◽  
Vol 8 (5) ◽  
pp. 309
Author(s):  
Hao Chen ◽  
Wei Xie ◽  
Xiyang Chen ◽  
Jingang Han ◽  
Nadia Aït-Ahmed ◽  
...  
Keyword(s):  
Fractional Order ◽  
Control Strategies ◽  
Dynamic Performance ◽  
Similar System ◽  
Operation Conditions ◽  
Tidal Stream ◽  
And Performance ◽  
Doubly Fed ◽  
Tidal Stream Turbine ◽  
Fopi Controller

This study mainly investigates the current and speed control strategies of a doubly-fed induction generator (DFIG), which is applied to a tidal stream turbine (TST). Indeed, DFIG using integer-order PI (IOPI) controller has been widely proposed in the applications with a similar system, especially in wind energy conversion system (WECS). However, these conventional controllers cannot deal with the problems caused by the parameter variations satisfactorily under complex and harsh operation conditions, and may even deteriorate the performance. As a result, a fractional-order PI (FOPI) controller is considered to improve the efficiency and performance of DFIG-based TST in this paper. The FOPI controller, developed from the traditional IOPI controller and the fractional calculus theory, has a lot of prominent merits in many aspects, such as robustness, stability, and dynamic performance. In this paper, the proposed control strategies are embedded into the whole TST model which contains the tidal stream turbine, and the generator. The obtained simulation results demonstrate the prominent effectiveness and advantages of the proposed strategies compared with the conventional IOPI controller in terms of overshoot, static error, adjustment time, and robustness. It implies that FOPI controller could be a good candidate in TST applications.

Multi-Agent Information Interaction Research for Distribution Dispatch Monitoring

2013 ◽  
Vol 791-793 ◽  
pp. 962-966
Author(s):  
Zhi Jian Qu ◽  
Liang Guo ◽  
Hong Ping Ling ◽  
Ge Chen ◽  
Li Liu
Keyword(s):  
Distribution Network ◽  
Measurement Data ◽  
Real Time Processing ◽  
Information Interaction ◽  
Mapping Technology ◽  
Quantity Measurement ◽  
On Line ◽  
Multi Agent ◽  
And Performance ◽  
News Event

In allusion to the transmission difficult difficulties problem of massive monitoring information flow, due to numerous on-line processing points and quick variation of operating parameters in distribution network monitoring dispatching, an new asynchronous processing method for batch information based on multi-agent alliance technology is proposed. Multi-agent alliance Platform is constructed by means of designing JACK software. Then using CIM-mapping technology and news event asynchronous trigger technology, massive data interactive real-time processing is implemented. Taking the monitoring system for 10kV railway distribution network as example, the synchronous interaction and performance tests are carried out for 10000 analog quantities and state quantity measurement data, the transmission interaction processing time is 582.08ms.

scholarly journals The Power System and Microgrid Protection—A Review

2020 ◽  
Vol 10 (22) ◽  
pp. 8271 ◽  
Author(s):  
Jalal Sahebkar Farkhani ◽  
Mohammad Zareein ◽  
Arsalan Najafi ◽  
Rui Melicio ◽  
Eduardo M. G. Rodrigues
Keyword(s):  
Renewable Energy ◽  
Power Systems ◽  
Renewable Energy Sources ◽  
Distribution Network ◽  
Protection System ◽  
Local Network ◽  
Energy Sources ◽  
Generation Model ◽  
Protection Scheme ◽  
Protection Systems

In recent years, power grid infrastructures have been changing from a centralized power generation model to a paradigm where the generation capability is spread over an increasing number of small power stations relying on renewable energy sources. A microgrid is a local network including renewable and non-renewable energy sources as well as distributed loads. Microgrids can be operated in both grid-connected and islanded modes to fill the gap between the significant increase in demand and storage of electricity and transmission issues. Power electronics play an important role in microgrids due to the penetration of renewable energy sources. While microgrids have many benefits for power systems, they cause many challenges, especially in protection systems. This paper presents a comprehensive review of protection systems with the penetration of microgrids in the distribution network. The expansion of a microgrid affects the coordination and protection by a change in the current direction in the distribution network. Various solutions have been suggested in the literature to resolve the microgrid protection issues. The conventional coordination of the protection system is based on the time delays between relays as the primary and backup protection. The system protection scheme has to be changed in the presence of a microgrid, so several protection schemes have been proposed to improve the protection system. Microgrids are classified into different types based on the DC/AC system, communication infrastructure, rotating synchronous machine or inverter-based distributed generation (DG), etc. Finally, we discuss the trend of future protection schemes and compare the conventional power systems.

scholarly journals Evaluating the Evolution of Distribution Networks under Different Regulatory Frameworks with Multi-Agent Modelling

Energies ◽  
2019 ◽  
Vol 12 (7) ◽  
pp. 1203 ◽  
Author(s):  
Miguel Manuel de Villena ◽  
Raphael Fonteneau ◽  
Axel Gautier ◽  
Damien Ernst
Keyword(s):  
Distribution System ◽  
Distribution Network ◽  
Distribution Networks ◽  
Distributed Energy ◽  
Time Step ◽  
Agent Based ◽  
Regulatory Frameworks ◽  
Discrete Time Dynamical System ◽  
System Operator ◽  
Multi Agent

In the context of increasing decentralised electricity generation, this paper evaluates the effect of different regulatory frameworks on the evolution of distribution networks. This problem is addressed by means of agent based modelling in which the interactions between the agents of a distribution network and an environment are described. The consumers and the distribution system operator are the agents, which act in an environment that is composed by a set of rules. For a given environment, we can simulate the evolution of the distribution network by computing the actions of the agents at every time step of a discrete time dynamical system. We assume the electricity consumers are rational agents that may deploy distributed energy installations. The deployment of such installations may alter the remuneration mechanism of the distribution system operator. By modelling this mechanism, we may compute the evolution of the electricity distribution tariff in response to the deployment of distributed generation.

scholarly journals Robust Design of a Real-Life Water Distribution Network under Different Demand Scenarios

Water ◽  
2021 ◽  
Vol 13 (6) ◽  
pp. 753
Author(s):  
Ina Vertommen ◽  
Karel van Laarhoven ◽  
Maria da Conceição Cunha
Keyword(s):  
Robust Design ◽  
Water Demand ◽  
Water Distribution ◽  
Demand Uncertainty ◽  
Distribution Network ◽  
Real Life ◽  
Water Distribution Network ◽  
Distribution Networks ◽  
Optimization Approach ◽  
And Performance

In this paper a scenario-based robust optimization approach is proposed to take demand uncertainty into account in the design of water distribution networks. This results in insight in the trade-off between costs and performance of different designs. Within the proposed approach the designer is able to choose the desired degree of risk aversion, and the performance of the design can be assessed based on the water demand effectively supplied under different scenarios. Both future water demand scenarios and scenarios based on historical records are considered. The approach is applied to the design of a real-life water distribution network supplying part of a city in the Netherlands. From the results the relation between costs and performance for different scenarios becomes evident: a more robust design requires higher design costs. Moreover, it is proven that numerical optimization helps finding better design solutions when compared to manual approaches. The developed approach allows water utilities to make informed choices about how much to invest in their infrastructure and how to design it in order to achieve a certain level of robustness.

The Impact on the Voltage Fluctuation of Wind Power Integrated Separately in Chongqing Distribution Network

2013 ◽  
Vol 385-386 ◽  
pp. 1053-1058
Author(s):  
Hui Peng ◽  
Sheng Fang Li ◽  
Ya Jun Li ◽  
Yuan Yuan Li ◽  
Jian Ding ◽  
...  
Keyword(s):  
Wind Power ◽  
Large Scale ◽  
Wind Farm ◽  
Distribution Network ◽  
Wind Farms ◽  
Distribution Networks ◽  
National Standards ◽  
Voltage Fluctuation ◽  
Access Mode ◽  
The Impact

Recently, the development of Chinese wind power generation has formally entered the strategic transformation stage with the combination of large-scale integrated exploitation and distributed access exploitation. It is suitable to adopt distribution access mode due to the characteristics of Chongqings planning wind farm including small generation capacity and distributed location. However, considering that most of planning wind farms are located in the mountain area of northeast and southeast Chongqing with the large-scale geographic area and small load request and the distribution networks are relatively weak, there may be remarkable effect on quality of electric energy even though the distribution access mode is adopted. In this paper, aiming at the voltage fluctuation of access point, the relationships among variables affecting the voltage fluctuation is analyzed, then taking two planning wind farms in northeast and southeast Chongqing respectively as examples, the effects of voltage fluctuation caused by different access points are calculated and analyzed in order to get the allowed maximum capacity of wind farms fitting national standards. In the end, the proposals relevant to the development of wind power and contribution of distribution network are submitted according to the case results.

scholarly journals A short communication to define the overcurrent protection system of the CIGRE European benchmark distribution networks for RES penetration studies

2021 ◽  
Author(s):  
J. M. Maza-Ortega ◽  
F. J. Zarco-Soto ◽  
S. Gkavanoudis ◽  
D. Tampakis ◽  
C. Demoulias
Keyword(s):  
Distribution System ◽  
Distribution Systems ◽  
Positive Impact ◽  
Task Force ◽  
Renewable Energy Sources ◽  
Distribution Networks ◽  
Protection System ◽  
Lack Of Information ◽  
Protection Systems ◽  
European Distribution

AbstractThe use of clean energies in distribution networks is an unstoppable trend which has a significant positive impact on the progressive power system decarbonization. However, it has to be considered that conventional distribution systems have been designed to operate as passive networks. Therefore, a massive penetration of distributed generation may create several operational problems, such as malfunction of the protection systems, which may limit the deployment of this technology. The analysis of these limitations by means of representative benchmark networks is of utmost importance. Most of the proposed benchmark networks proposed so far, however, lack of information about their protection system. To overcome this shortcoming, this letter specifies the protection system of the benchmark European distribution networks proposed by the CIGRE Task Force C06.04.02 for this purpose. In this way, this letter facilitates the analysis of the possible impact that renewable energy sources may have in the distribution system protections.

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