Optimal design of solar–wind hybrid system-connected to the network with cost-saving approach and improved network reliability index

Eslami, Esmaeil; Kamarposhti, Mehrdad Ahmadi

doi:10.1007/s42452-019-1710-y

Cited by 12 publications

(7 citation statements)

References 20 publications

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“…According to Figure 1, an increase in reactive power Q in a stable voltage system will increase the bus voltage. For an instable voltage system, an increase in reactive power Q leads to a decrease in the bus voltage [11][12][13][14][15].…”

Section: Figure 1 Q-v Curve Methodsmentioning

confidence: 99%

A Voltage Stability-Based Approach to Determining the Maximum Size of Wind Farms in Power Systems

Lorenzini¹,

Kamarposhti²,

Solyman³

2021

IJDNE

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Current methods to determine the wind farms maximum size do not consider the effect of new wind generation on the Voltage Stability Margins (VSMs). Installing wind power in one area may affect VSMs in other areas of the power system. Buses with high VSMs before wind power injection may be converted into weak buses after wind power injections in other parts of power systems, which may lead to limited future wind farms expansion in other areas. In this paper, two methods are proposed to determine two new wind farms maximum size in order to maximize wind power penetration level. In both methods, the size of any new wind farm is determined using an iterative process which is increased by a constant value. Proposed methods were used in the IEEE 14-bus power system. The results of applying these new methods indicate that the second method results in higher maximum sizes than the first method.

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Section: Figure 1 Q-v Curve Methodsmentioning

confidence: 99%

A Voltage Stability-Based Approach to Determining the Maximum Size of Wind Farms in Power Systems

Lorenzini¹,

Kamarposhti²,

Solyman³

2021

IJDNE

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“…Applying the Fuzzy PID controller in this system due to controller proportional it decreases the depreciation time and because of controller connected to it, a line creates fixed state. Also, it increases the stability and improves the transient state [47], [49]- [51]. Next sub-section, the proposed Fuzzy-PID controller is introduced.…”

Section: A Under-study Power Systemmentioning

confidence: 99%

Optimal Designing of Fuzzy-PID Controller in the Load-Frequency Control Loop of Hydro-Thermal Power System Connected to Wind Farm by HVDC Lines

Kamarposhti

Shokouhandeh

Alipur³

et al. 2022

IEEE Access

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In this paper an optimized Fuzzy based controller is proposed for automatic generation control of two area hydro-thermal power system connected to the wind farm. The parameters and membership functions of the proposed controller are optimized by a modified version of Cuckoo search algorithm (CSA). Also, a weighted objective function is proposed to minimize the frequency deviation and transmission power oscillation. The suggested heuristic objective function is a weight function from maximum frequency drift and oscillations fading time. To assessing the performance of suggested controller, studies is accomplished by two different scenarios. In the first scenario, the simulations are performed without wind farm and in the second scenario, the simulation is done in the presence of a wind farm. The simulation results indicate that the wind farm presence has major effect on sustained improvement of power system and the reason is considering the load variations in the area, the demand electrical energy in the same area is provided by the wind farm and hence, the frequency oscillations are decreased in both areas.

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“…In the paper [16], a Markov hierarchical model for reliability analysis such as the impacts of various fault modes, failure separation strategy and load restoration according to the system configuration, integrity of control protection systems, and single protection component has been presented. Reference [17], also, presented an approach to reduce the complexity of radial distribution system using network equivalents to a set of general reliability of feeders. This method suggested a sequential and repetitive procedure for evaluating a person's reliability indicators from the point of load.…”

Section: A Backgroundmentioning

confidence: 99%

Automated Distribution Networks Reliability Optimization in the Presence of DG Units Considering Probability Customer Interruption: A Practical Case Study

et al. 2021

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Automation in power distribution systems and supervisory control and data acquisition (SCADA), which perform network switching automatically and remotely, allows distribution companies to flexibly control distribution power grids. Cross-section switches also has a significant role in the automation in distribution systems, in that the operational optimization of these switches is able to enhance the supply power quality and reliability indicators, and can be a prosperous solution to increase the reliability, efficiency and overall service quality in services to customers. In this regard, in this work, the genetic optimization algorithm (GOA) approach which integrated the Steepest Descend Technique (SDT) is proposed and enhanced based on the features of the mentioned issue to sketch the optimal location and control of automatic and manual cross-section switches and protection relay systems in distribution power systems. The GOA is able to search globally that can prevent the result from locally convergence, also, GOA gives superior primary solutions for the SDT. Thus, the SDT can search locally with higher performance which increase the solutions' accuracy. Therefore, an optimization formulation is proposed to improve the value-based reliability of the suggested layout considering the cost of customer downtime and the costs related to segmentation of switches and relay protection devices. Also, a distributed generation (DG) system in distribution networks is considered based on the islanded state of generation units. The effectiveness of the optimal suggested procedure is evaluated and represented via performing a practical test system in the distribution network of Ahvaz city in Iran. The results show that using proposed method and by optimally allocating switches maneuver, energy losses without switches are reduced from 310.17 (MWh) to 254.2 (MWh), and also by using DG, losses are reduced from 554.01 to 533.61 which confirms the ability and higher accuracy of the proposed method to improve reliability indices.

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Optimal design of solar–wind hybrid system-connected to the network with cost-saving approach and improved network reliability index

Cited by 12 publications

References 20 publications

A Voltage Stability-Based Approach to Determining the Maximum Size of Wind Farms in Power Systems

A Voltage Stability-Based Approach to Determining the Maximum Size of Wind Farms in Power Systems

Optimal Designing of Fuzzy-PID Controller in the Load-Frequency Control Loop of Hydro-Thermal Power System Connected to Wind Farm by HVDC Lines

Automated Distribution Networks Reliability Optimization in the Presence of DG Units Considering Probability Customer Interruption: A Practical Case Study

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