Control of parallel EHV interconnection lines using Phase Shifting Transformers

Hraiech, Anas El; Ben-Kilani, Khadija; Elleuch, M.

doi:10.1109/ssd.2014.6808829

Cited by 10 publications

(6 citation statements)

References 4 publications

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“…Additional equations result from (19) and (23). Besides, equations for Pi, Qi, Pk, Qk where i and k are indices of terminal buses of the branch with the phase shifter, are more complex (20), (21). The number of state variables increases.…”

Section: Discussionmentioning

confidence: 99%

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Properties of State Estimation for Power System with Quadrature Booster in Rectangular Coordinates

Okoń¹,

Wilkosz²

2018

ElAEE

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The paper presents a state estimation of a power system with a phase shifter. A new versatile model of the phase shifter for steady state analyses is introduced. The mentioned model allows for consideration of different types of phase shifters. In the paper, original investigations of properties of the state estimation for a power system with a quadrature booster (to be one of types of phase shifters) are performed. The state estimation is considered in the rectangular coordinate system. During the investigations, impact of data redundancy on such parameters of the state estimation as: the number of iterations, a condition number of a coefficient matrix, parameters characterizing accuracy of calculation results are taken into account. At the end of the paper, conclusions from the conducted investigations are presented.

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Section: Discussionmentioning

confidence: 99%

“…One of them is in a shunt branch and second one is in a series branch. The assumed model is other than models of phase shifters that can be found in other papers [2], [3], [8], [9], [12]- [20]. The here-considered model can be used for modeling different types of phase shifters, otherwise than models from the earlier-mentioned papers.…”

Section: Introductionmentioning

confidence: 99%

Properties of State Estimation for Power System with Quadrature Booster in Rectangular Coordinates

Okoń¹,

Wilkosz²

2018

ElAEE

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“…We know that shifting transformers are installed in HV electrical networks [13,[15][16][17], but on the above considerations, we believe that it is also advisable to investigate the feasibility and effectiveness of shifting transformers installation in LV networks. This installation will not only relieve the LV network under EPS normal conditions and partially unload overloaded intersystem HV transmission lines when repairing or under emergency operation.…”

Section: Analysis Of the Literature Sourcesmentioning

confidence: 99%

Optimal control of mutual impact of electric grids for the reduction of their electric energy losses

Лежнюк

Rubanenko

Kylymchuk

2014

EEJET

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Розглянуто математичні моделі й алгоритми визначення втрат електроенергії в неоднорідних електричних мережах, викликаних їх взаємовпливом. Показано спосіб зменшення цих втрат за допомогою лінійних регуляторів, встановлених в мережі нижчої напруги. Запропоновано метод визначення оптимального місця встановлення цих пристроїв Ключові слова: взаємовплив електричних мереж, додаткові втрати електроенергії, керування потоками потужності, лінійні регулятори, крос-трансформатор Рассмотрено математические модели и алгоритмы определения потерь электроэнергии в неоднородных электрических сетях, вызванных их взаимовлиянием. Показан способ уменьшения этих потерь с помощью линейных регуляторов, установленных в электрических сетях низшего напряжения. Предложен метод определения оптимального места установки этих устройств Ключевые слова: взаимовлияние электрических сетей, дополнительные потери электроэнергии, управление потоками мощности, линейные регуляторы, кросс-трансформатор

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“…In the literature, many manuscripts document the influence of a given PST type on power flows in interconnection lines [14,15] and in some power system regions as well. Different PST types have been analyzed during simulations on the power flows [16,17].…”

Section: Introductionmentioning

confidence: 99%

Phase-Shifting Transformer Efficiency Analysis Based on Low-Voltage Laboratory Units

Albrechtowicz

2021

Energies

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Phase-shifting transformers are effective elements used to control power flows in many power systems. Their positive influence on power flows has been proved in the literature. However, the efficiency of phase-shifting transformers has not been analyzed, especially not with regard for their various types. This study is therefore focused on the efficiency question with respect to electrical energy parameters. Research was performed on a laboratory phase-shifter unit with longitudinal and quadrature voltage regulation, and then these results were correlated to the simulation model equivalent. Laboratory transformer parameter data were used to prepare asymmetrical and symmetrical phase-shifting transformer simulation models. Simulation results were then used to compare the electrical properties and efficiency of all the types of phase-shifting transformer considered. All phase-shifting transformer types had a significant impact on the transmitted active power, but each type had different features. The symmetrical unit had the lowest power losses and a stable output voltage level compared to the asymmetrical one, which increased the output voltage, while the quadrature voltage also grew. These features must be considered, taking into account power system conditions such as the voltage variability profile and active power transfer demand. In this study, we propose the construction of an asymmetrical controllable phase-shifting transformer in order to achieve flexible control.

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Control of parallel EHV interconnection lines using Phase Shifting Transformers

Cited by 10 publications

References 4 publications

Properties of State Estimation for Power System with Quadrature Booster in Rectangular Coordinates

Properties of State Estimation for Power System with Quadrature Booster in Rectangular Coordinates

Optimal control of mutual impact of electric grids for the reduction of their electric energy losses

Phase-Shifting Transformer Efficiency Analysis Based on Low-Voltage Laboratory Units

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