Simple and efficient method for steady‐state voltage stability analysis of islanded microgrids with considering wind turbine generation and frequency deviation

Hemmatpour, Mohammad Hasan; Mohammadian, Mohsen; Gharaveisi, Ali Akbar

doi:10.1049/iet-gtd.2015.1047

Cited by 24 publications

(26 citation statements)

References 28 publications

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“…In a medium‐voltage radial feeder, the line capacitance may often be ignored without much error because either the line is less than about 80 km long or the voltage is not over 69 kV . The short‐line model has been typically used in previous voltage stability studies …”

Section: Problem Formulationmentioning

confidence: 99%

“…To verify this, parameter a in can simply be substituted by 1, which leads to regardless of any value for λ. Equation has been already given in Hemmatpour et al

{(PX - QR)}^{2} + ((), italicPR + italicQX) < \frac{1}{4}

…”

Section: Problem Formulationmentioning

confidence: 99%

“…Safety in a power system is usually representative of its capability in maintaining stability against fluctuations and malfunctions . The phenomenon of voltage stability, as one of the restricting factors in power system operation in various sectors including generation, transmission, and distribution, has been received many researchers' and power companies' attention . It is approved that voltage stability can be used as a suitable criterion in order to assess the security level of power systems .…”

Section: Introductionmentioning

confidence: 99%

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Optimal location of step-up transformer in radial distribution networks to enhance static voltage stability

Rouholamini

Wang

Mohammadian

et al. 2018

Int Trans Electr Energ Syst

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Summary Electricity consumption has been increasing worldwide, and the growth is still significant, particularly in developing countries. When power consumption increases, the entire system is at a risk of voltage collapse. Power distribution companies have been using step‐up transformers or on‐load tap changing systems to overcome this crucial challenge. These devices are capable of increasing voltage and consequently promoting static voltage stability margin of the network. To use such equipment, it is essential to determine the optimal location and voltage ratio. This paper analytically investigates the presence of a step‐up transformer in a medium‐voltage radial feeder for improving voltage stability. The paper also introduces an easy‐to‐use coordinate rotation that provides a more tangible graphical representation of static stability of power systems. Furthermore, an open‐source software application, developed by the authors, to calculate voltage stability limit of power systems is introduced in this paper that is publicly available.

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Section: Problem Formulationmentioning

confidence: 99%

“…To verify this, parameter a in can simply be substituted by 1, which leads to regardless of any value for λ. Equation has been already given in Hemmatpour et al

{(PX - QR)}^{2} + ((), italicPR + italicQX) < \frac{1}{4}

…”

Section: Problem Formulationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Optimal location of step-up transformer in radial distribution networks to enhance static voltage stability

Rouholamini

Wang

Mohammadian

et al. 2018

Int Trans Electr Energ Syst

Self Cite

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“…Significant research on the influence of DGs on static voltage stability of distribution network, the static voltage stability index and the methods to improve the static voltage stability of ADNs are being conducted as shown in [15][16][17][18][19][20][21][22][23]. The static voltage stability based on the load flow equation theory of distribution system is proposed in [15,16], and the further improvement of voltage stability index (VSI) is discussed in [17].…”

Section: Introductionmentioning

confidence: 99%

“…The static voltage stability based on the load flow equation theory of distribution system is proposed in [15,16], and the further improvement of voltage stability index (VSI) is discussed in [17]. A new VSI is developed in [18] for identifying the most sensitive bus to the voltage collapse in distribution network by using the catastrophe theory; In [19], a method that using the load apparent power to characterize the VSI has been discussed; whereas [20,21] analyze the impact of distributed generations access on voltage stability index in distribution network; Furthermore, the optimal voltage stability-based distributed generation placement method have been proposed in [22,23] to improve the voltage stability of the whole system.…”

Section: Introductionmentioning

confidence: 99%

A coordinated consistency voltage stability control method of active distribution grid

Yang

Jian

Liu

et al. 2017

J. Mod. Power Syst. Clean Energy

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The presence of distributed generators (DGs) with high penetration poses new challenges in the management and operation of electrical grids. Due to the local character of DGs, they could in principle be used in emergency situations to prevent a voltage instability event of the grid. In this paper, a certain method is proposed to coordinate the operation of virtual power plant (VPP) and conventional voltage regulation device to improve the static voltage stability of distribution network with the multi-agent framework. The concept and the general framework of this coordinated control system is introduced, and the voltage instable nodes are determined based on the voltage instability indicator. The voltage coordinated control model of the distribution system is established according to the multi-agent consistency control theory and the coordinated controllers for agents are designed by solving a problem with bilinear matrix inequality constraints. The suggested method is implemented on an IEEE 33 nodes test system and the simulation results show its efficiency and validity.

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A brief review on microgrids: Operation, applications, modeling, and control

Shahgholian

2021

Int Trans Electr Energ Syst

155

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Microgrid is an important and necessary component of smart grid development. It is a small-scale power system with distributed energy resources. To realize the distributed generation potential, adopting a system where the associated loads and generation are considered as a subsystem or a microgrid is essential. In this article, a literature review is made on microgrid technology.The studies run on microgrid are classified in the two topics of feasibility and economic studies and control and optimization. The applications and types of microgrid are introduced first, and next, the objective of microgrid control is explained. Microgrid control is of the coordinated control and local control categories. The small signal stability and methods in improving it are discussed.The load frequency control in microgrids is assessed.

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Simple and efficient method for steady‐state voltage stability analysis of islanded microgrids with considering wind turbine generation and frequency deviation

Cited by 24 publications

References 28 publications

Optimal location of step-up transformer in radial distribution networks to enhance static voltage stability

Optimal location of step-up transformer in radial distribution networks to enhance static voltage stability

A coordinated consistency voltage stability control method of active distribution grid

A brief review on microgrids: Operation, applications, modeling, and control

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