Means and trends of reactive power management at large ironworks

Корнилов, Г. П.; Nikolaev, A.A.; Коваленко, А. С.; Кузнецов, Е. А.

doi:10.3103/s1068371208050052

Cited by 14 publications

(8 citation statements)

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“…Примеры математического моделирования синхронных генераторов с АРВ подробно изложены в трудах [32][33][34][35][36][37]. В работах [38,39] приведены сведения о математическом моделировании элементов систем электроснабжения металлургических предприятий с использованием пакета MATLAB и приложением Simulink.…”

Section: Introductionunclassified

Analysis of Excitation Systems of Synchronous Generators of Factory Power Plants

Корнилов¹,

Gazizova²,

Sokolov³

et al. 2022

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One of the priorities in the development of metallurgical enterprises is to increase own generation of electricity. At the largest enterprises in the sector – PJSC MMK (Magnitogorsk), Severstal PJSC (Cherepovets), PJSC “NLMK” (Lipetsk) Electricity generation is 60–70% of total consumption. This contributes to two factors: firstly, the presence of secondary fuel gases – coke and domain; and secondly, unreasonably high electricity tariffs. Thus there is an urgent need to ensure sustainable trouble-free operation of factory generators and basic systems. Automatic excitation control systems (ARV) are the most important factor when determining the state of the generator in various modes. The main requirements for ARV systems determine the specific working conditions. We will highlight the most significant and significant of these. 1. Low power 10–50 MW generators are connected to an external power system on 110 kV buses, where the short circuit capacity is within 3000–5000 mba. Thus the possibilities of regulating and maintaining voltage are very limited. 2. Since the electricity produced by its own power plants is 2–2.5 times cheaper than purchased power, almost all generators work with a power factor close to one. This significantly reduces their stability in the power supply system. 3. The voltage at the point of connection and loading of the Eigen needs for the generator voltage stations are unsta-ble. Therefore, in order to preserve the stability of generators in transient modes, the most preferred is the ARV system with a switching structure in which the settings and regulation laws are selected depending on Work modes. The work gives a general review of the existing laws and the proposed arousal regulation law, adapted to the condi-tions of factory generators of small and medium-sized power, working concomitantly with a high power grid.

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Section: Introductionunclassified

Analysis of Excitation Systems of Synchronous Generators of Factory Power Plants

Корнилов¹,

Gazizova²,

Sokolov³

et al. 2022

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“…Широкое распространение получили статические тиристорные компенсаторы (СТК), которые обладают достаточным быстродействием для компенсации резкопеременной нагрузки и возможностью пофазного регулирования для устранения несимметрии напряжений. Также к достоинствам СТК можно отнести их невысокую стоимость по сравнению с быстродействующими статическими компенсаторами (СТАТКОМ) [2][3][4].…”

Section: Introductionunclassified

Comparative analysis of static var compensator control modes for high power electric arc furnace

2016

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In addition, this paper describes the developed mode, which maintains a constant active power of an electric arc furnace. The effects of supply main parameters and SVC control modes on the EAF electrical characteristics are investigated with a mathematical model of the EAF-120 and SVC-100 MVAr steel-smelting complex developed in the Matlab's Simulink application. Thus, advantages and disadvantages of the discussed SVC control modes are determined and main recommendations for their application are given.

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“…Основными задачами данного исследования являются анализ и оценка влияния поперечной компенсации на пропускную способность линий электропередач, а также изучение динамики процесса на основе сформированных зависимостей различных параметров, при моделировании изменчивости характеристик элементов системы [12].…”

Section: Introductionunclassified

Study of transmission lines in various modes working static var compensator

2015

RIJEE

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Аннотация. В статье проанализированы проблемы повышения пропускной способности линий электропередач. Рассмотрены основные факторы, влияющие на пропускную способность линий. На математической модели исследованы перетоки мощности в электрической сети при использовании статического тиристорного компенсатора, проанализированы пределы передаваемой мощности для различных режимов работы исследуемой системы. Ключевые слова: пропускная способность линии электропередач, статический тиристорный компенсатор, компенсация реактивной мощности.

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Means and trends of reactive power management at large ironworks

Cited by 14 publications

References 0 publications

Analysis of Excitation Systems of Synchronous Generators of Factory Power Plants

Analysis of Excitation Systems of Synchronous Generators of Factory Power Plants

Comparative analysis of static var compensator control modes for high power electric arc furnace

Study of transmission lines in various modes working static var compensator

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