A control model of virtual power plant with reactive power supply for small signal system stability studies

Bertram, Reinhold; Schnettler, Armin

doi:10.1109/ptc.2017.7980838

Cited by 4 publications

(4 citation statements)

References 2 publications

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“…Involving distributed sources to solve the problem of reactive power balancing, by analogy with a virtual power plant, can be combined into virtual reactive power sources. In [21,22] the problem of reactive power is not allocated separately but included in the list of tasks for the organization of VPP. [23] presents the concept of a dynamic VRPP as an ancillary service to reasonably combine decentralized power distribution sources into a coordinated pool to provide reactive power for the needs of power transmission system operators.…”

Section: Introductionmentioning

confidence: 99%

Multi Operated Virtual Power Plant in Smart Grid

Fediv¹,

Sivakova²,

Korchak³

2020

Adv. sci. technol. eng. syst. j.

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The resources of active and reactive power for which can be obtained using an AC voltage controller with a phase-angle control for regulation of operating modes of the ohmic load of consumers, for example, distributed systems of electric space heating or electric water heating, etc. A method is proposed and the results of the analysis of the phase-angle control modes by gate turn off (GTO) thyristors of the AC voltage regulator, which provides the generation of virtual reactive power by consumers of active power, are presented. The process equipment of such a virtual power plant is fully suitable both for the dynamic production of a virtual resource of active power to balance, for example, the power of dynamic distributed renewable energy sources (virtual power plant (VPP) mode), and to regulate reactive power to ensure adequate voltage levels and increase stock stability of operation of electric load units (virtual reactive power plant (VRPP) mode). References 24, figures 8.

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Section: Introductionmentioning

confidence: 99%

Multi Operated Virtual Power Plant in Smart Grid

Fediv¹,

Sivakova²,

Korchak³

2020

Adv. sci. technol. eng. syst. j.

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“…Constraints ( 14) and ( 15) are the active power and reactive power output constraints, where P Gi,min and P Gi,max are the minimum and maximum magnitudes of the generator active output of node i, and Q Gi,min and Q Gi,max are the minimum and maximum magnitudes of the generator reactive output of node i. Constraint formula (16) specifies the main grid voltage amplitude limit, where V i,min and V i,max are the minimum and maximum voltage magnitudes of node i. Constraint formula (17) identifies the transmission capacity constraint for each line, where S ij,max is the maximum transmission capacity of branch ij.…”

Section: Main Grid Modelmentioning

confidence: 99%

“…Vale et al [16] presented a multi-level consultation mechanism that leverages the advantages of VPP management to achieve optimal operation and negotiation in power markets with smart grids. Bertram et al [17] used a reactive power supply control model to analyze the small-signal stability of voltage regulation in medium-voltage distribution networks. Ruthe et al [18] introduced a new distributed coordination algorithm as well as the concept of direct control to allow small loads or generator sets to provide a secondary control reserve.…”

Section: Introductionmentioning

confidence: 99%

Coordinated Dispatch Optimization between the Main Grid and Virtual Power Plants Based on Multi-Parametric Quadratic Programming

Yang

Wang

et al. 2023

Energies

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Virtual power plants (VPPs) are a critical technology for distribution systems that can integrate various renewable energy resourcescontrollable loads and energy storage systems into one specific power plant through a distributed energy management system. This paper proposes a coordinated dispatch optimization model between the main grid and VPPs aiming to minimize both the power generation cost and total system active loss. When the time of the equivalent dispatching model is not divisible due to the existence of a time coupling constraint inside the VPPs, this model can obtain the global optimal solution through iteration between the main grid and the VPPs. By employing multi-parametric quadratic programming to obtain accurate critical domains and optimal cost functions, the convergence speed and stability are significantly improved. Additionally, a reactive power and voltage optimization technique leveraging the generalized Benders decomposition is presented for the coordination of the main grid and the VPPs. Moreover, the impact of distributed energy resource (DER) clusters on the main grid was studied, from which we proved that the proposed approach can expeditiously abate energy production expenditure and system active dissipation whilst enhancing the system equilibrium.

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“…Ensuring the balance of reactive power in the established modes of power supply systems by using devices to compensate for reactive power achieves the appropriate voltage levels in the nodes of electrical networks [1][2][3]. The balance of reactive power during transition processes in power supply systems contributes to an increase in the reserve of static stability of the asynchronous load [4]. To solve these problems, dynamic compensation of reactive power is used, which means the installation of regulated sources of reactive power in power supply systems [5].…”

Section: Introductionmentioning

confidence: 99%

Determining the mode characteristics of voltage regulator with capacitive load

Fediv

Sivakova

2022

EEJET

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The tasks of dynamic compensation of reactive power are solved by means of flexible AC transmission systems using power electronics devices. The object of this study is a variable voltage regulator with a capacitive load. This paper considered the problem of the efficiency of phase voltage regulation on the capacitor battery to use it as a source to compensate for reactive power. The results of the study are presented, which justify the effectiveness of the technique for obtaining a dynamic source of reactive power based on the use of a thyristor voltage regulator with a capacitive load. A comparative study of two regimes of the regulator was carried out: the phase-controlled mode of closing fully controlled semiconductor gates and the phase-controlled mode for opening single-core semiconductor gates. Analytical expressions for angular characteristics of power according to the main harmonics are derived. It is shown that under the first mode the current through the capacitor is capacitive, which makes it possible to obtain a thyristor-adjustable capacitor battery for dynamic compensation of reactive power in power supply systems. It was found that under the second mode, simultaneously with the regulation of reactive power, there is a phenomenon of consumption from the active power supply network according to the main harmonics. This means that the regulation of current through an ideal capacity using ideal phase-controlled semiconductor gates is accompanied by the consumption of the active component of the current from the power supply network. The resulting component of active power in the electrical circuit without active resistances is proposed to be called "active artificial shear power". The results have been confirmed by studies on virtual models

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A control model of virtual power plant with reactive power supply for small signal system stability studies

Cited by 4 publications

References 2 publications

Multi Operated Virtual Power Plant in Smart Grid

Multi Operated Virtual Power Plant in Smart Grid

Coordinated Dispatch Optimization between the Main Grid and Virtual Power Plants Based on Multi-Parametric Quadratic Programming

Determining the mode characteristics of voltage regulator with capacitive load

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