Smart Transformer and Low Frequency Transformer Comparison on Power Delivery Characteristics in the Power System

Chen, Junru; Zhu, Rongwu; OlDonnell, Terence; Liserre, Marco

doi:10.23919/aeit.2018.8577375

Cited by 15 publications

(11 citation statements)

References 13 publications

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“…The bus voltage variation range (20) is also limited by grid code requirements. Equation (14)(15)(16)(17) and constraints (18)(19)(20) define the static power flow for the transmission system. The parameters are the line information ( , , ).…”

Section: B Constraintsmentioning

confidence: 99%

Smart transformer Modelling in Optimal Power Flow Analysis

Chen

Soroudi

et al. 2019

IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society

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The smart transformer (ST) implemented using power electronics converters, has the capability of independent voltage control and reactive power isolation between it primary and secondary terminals. This capability provides a flexibility in the power system to support the voltage at the primary side and control the demand at the secondary side. Using this flexibility, the system power flow could for example be optimized for lower costs. This paper proposes an ST model suitable for OPF analysis. The effects of using multiple STs at different penetration levels, on the daily generation costs in an IEEE 39 bus test system are presented.

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Section: B Constraintsmentioning

confidence: 99%

Smart transformer Modelling in Optimal Power Flow Analysis

Chen

Soroudi

et al. 2019

IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society

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“…The expected energy for the load active power and reactive are defined as (8) and (9). The expected active and reactive demand not supplied, i.e., and , due to the active power and reactive power shortages, are calculated using (10) and (11), respectively. Where NC is the number of the scenarios, and are the active and reactive loading for the scenario i;…”

Section: B System Reliability Parameters and Indicesmentioning

confidence: 99%

“…These scenarios are combined with the components' outage scenarios to form the final set of scenarios. Finally, with πm and Nm, as the probability of scenario m and number of final scenarios (index by m), the expected energy not supplied can be calculated using (10,11).…”

Section: Reliability Evaluation Techniquementioning

confidence: 99%

“…This feature can be used to better control the active and reactive power demands considering the voltage dependent nature of the system loads [8]. By adjusting the voltage amplitude in response to the change in the grid frequency, the ST has the potential to improve the frequency stability [9,10]. In some under-frequency situations, the ST may be able to keep the entire load online and to obviate the need for load curtailment [9].…”

Section: Introductionmentioning

confidence: 99%

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Methodology for Assessment of the Impact of Smart Transformers on Power System Reliability

Chen

Nouri

Keane

et al. 2019

IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society

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The smart transformer (ST) has been proposed as an alternative to the traditional low frequency transformer as a means to provide extra control functionality in the smart power system. The ST has merits in terms of reactive power decoupling and voltage decoupling at the primary and secondary side. This provides flexibility for reactive power compensation in the transmission system and demand reduction in the distribution system. Using its ability to control demand through voltage regulation, the ST provides the possibility to reduce demand while keeping the entire load online, which can provide an alternative to load curtailment. Thus, it may provide a means to improve power system reliability. However, no of previous research has investigated these potential system reliability benefits of the ST. The paper presents a methodology which can be used to quantify the system reliability impacts of the use of STs as an interface between the transmission and distribution systems. Using the methodology, the ST impacts on the system reliability are assessed using the IEEE 39-bus system as an example.

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“…The ST can be used as a voltage control device at the secondary side. Therefore, ST is an economical solution for voltage regulation without the need for DSTATCOM and OLTC [12].…”

Section: Introductionmentioning

confidence: 99%

Voltage control using smart transformer via dynamic optimal setpoints and limit tolerance in a residential distribution network with PV sources

Manojkumar

Kumar

Ganguly

et al. 2020

IET gener. transm. distrib.

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Smart Transformer and Low Frequency Transformer Comparison on Power Delivery Characteristics in the Power System

Abstract: Some rights reserved. For more information, please see the item record link above.

Cited by 15 publications

References 13 publications

Smart transformer Modelling in Optimal Power Flow Analysis

Smart transformer Modelling in Optimal Power Flow Analysis

Methodology for Assessment of the Impact of Smart Transformers on Power System Reliability

Voltage control using smart transformer via dynamic optimal setpoints and limit tolerance in a residential distribution network with PV sources

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