Selfoptimization Modes of Electric Grids with Renewable Energy Sources Using the Principle of Least Action

Лежнюк, Петро; Kravchuk, S.; Buslavets, O.

doi:10.1109/ess.2019.8764181

Cited by 5 publications

(3 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…5 shows the scheme of replacing a network node with a parallel-serial UPFC [6,11]. U calculated according to the formula: Reactive power is compensated by the power supply, parallel and series UPFC compensators [9,10].…”

Section: Simulation Of Parallel-serial Upfc In Static Modementioning

confidence: 99%

Automatic Adjustment of Reactive Power by Facts Devices Under Conditions of Voltage Instability in the Electric Network

Burbelo,

Babenko,

Loboda

et al. 2023

IAPGOS

View full text Add to dashboard Cite

This article describes the problem of automatic regulation of reactive power using electronic devices FACTS (Flexible AC Transmission Systems): static synchronous compensator (STATCOM) and unified power flow controller (UPFC). With the help of a complex writing form, the following are determined: voltages at the installation nodes of the FACTS device and loads, currents of loads, power sources and electronic compensators in case of voltage instability at the load node of the electrical network. Voltages and currents are determined using the node-voltage method. The task of STATCOM is partial or full compensation of reactive power. During the reduction of the voltage at the load node, the reactive power generated by the power source decreases. The STATCOM should partially or fully compensate for the reactive power imbalance as quickly as possible. However, at the same time, it is not possible to fully compensate for the voltage reduction. A series-parallel or parallel-series UPFC can be used to solve this problem. As a result of using the UPFC, it is possible to automatically raise the voltage level to acceptable values with the help of the UPFC series compensator. The analysis shows that the parallel-serial UPFC is characterized by the stability of operation. In the case of using a series-parallel UPFC, there are restrictions on the ability to adjust the imaginary voltage component of the series compensator, since the angle of the voltage vector changes, which causes a failure in the operation of the regulator of the parallel compensator UPFC.

show abstract

Section: Simulation Of Parallel-serial Upfc In Static Modementioning

confidence: 99%

Automatic Adjustment of Reactive Power by Facts Devices Under Conditions of Voltage Instability in the Electric Network

Burbelo,

Babenko,

Loboda

et al. 2023

IAPGOS

View full text Add to dashboard Cite

show abstract

“…Сукупність сучасних електроннообчислювальних машин, математичних методів моделювання та вимірювальних технічних засобів, що реалізують ідентифікацію технічного стану, дозволяє перейти на якісно новий рівень визначення технічного стану ФЕМ, використовуючи макромоделювання [12].…”

Section: вступunclassified

Software-hardware complex for diagnosing the technical condition of photovoltaic station equipment

Komar,

Lezhniuk,

Lesko

et al. 2022

EREE

View full text Add to dashboard Cite

In the article, a software-hardware complex for diagnosing the equipment of photovoltaic stations was developed. First of all, the article deals with the assessment of the technical condition of photovoltaic modules as an element that has the greatest influence on the generation of solar power plants. Since photovoltaic stations occupy a prominent place in the balance of power and electricity of electric power systems, it is important to know the amount of electricity and according to what possible time schedule photovoltaic stations can generate it. In addition to the insolation of the sun, another reason for the unstable generation of photovoltaic stations is their technical condition, in particular, the gradual degradation of photovoltaic modules. For the participation of photovoltaic stations in the process of balancing power and electricity in the electric power systems, it is necessary to know their current technical condition and prospects regarding the possibility of generating electricity in a given volume. The investor is also interested in the evaluation of the technical condition of the photovoltaic stations. For the planning of electricity generation and the feasibility of the costs for the repair of the photovoltaic stations, the investor is also interested. In particular, it is about the residual resource of the photovoltaic stations in relation to the estimated resource at the start of operation. This puts forward appropriate conditions for the methods and means of assessing the technical condition of the photovoltaic stations. As for the photovoltaic modules, it is necessary to monitor the indicator coefficients that indicate the abnormal operation of the photovoltaic modules in the string and actually signal the presence of a problem in its operation. Software-hardware complex allows checking the contact connections of the photovoltaic stations and determine whether the resistances of the contact connections are within the permissible limits. If necessary, a database is formed using a quadcopter. With the help of a thermal imager and a pyrometer, the photovoltaic modules is examined for defects manifested by areas with a temperature higher than the temperature of an exploitation photovoltaic modules. Defects of elements are detected on photovoltaic modules, which are examined in more detail. To determine the degree of efficiency of the photovoltaic modules, a database is formed for the construction and comparison of separates current-voltage characteristic. The information is transferred to a laptop, where it is processed by a developed program for detecting and diagnosing the appearance of defects or damages, as well as determining the coefficients of the remaining resource and the coefficients indicating the abnormal operation of the photovoltaic modules. Based on these results, a decision is made regarding the expediency of further photovoltaic modules operation. The possibility of their recovery or complete replacement is determined.

show abstract

“…As a result, massive storage devices have been installed in the grid to compensate the volatile generation via renewable energies and the accompanied bidirectional power flow. This paradigm shift in energy supply comes along with great optimization potential (Lezhniuk et al (2019); Atzeni et al (2013); Bolognani and Zampieri (2013)). In (Hubert and Grijalva (2011)) the authors discussed the importance of optimization algorithms on a residential level.…”

Section: Introductionmentioning

confidence: 99%

Distributed Control Enforcing Group Sparsity in Smart Grids

et al. 2020

View full text Add to dashboard Cite

Selfoptimization Modes of Electric Grids with Renewable Energy Sources Using the Principle of Least Action

Cited by 5 publications

References 3 publications

Automatic Adjustment of Reactive Power by Facts Devices Under Conditions of Voltage Instability in the Electric Network

Automatic Adjustment of Reactive Power by Facts Devices Under Conditions of Voltage Instability in the Electric Network

Software-hardware complex for diagnosing the technical condition of photovoltaic station equipment

Distributed Control Enforcing Group Sparsity in Smart Grids

Contact Info

Product

Resources

About