Transformer Voltage Regulation—Compact Expression Dependent on Tap Position and Primary/Secondary Voltage

Todorovski, Mirko

doi:10.1109/tpwrd.2014.2311959

Cited by 25 publications

(10 citation statements)

References 2 publications

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“…The traditional distribution network has multiple voltage regulation methods, such as on-load tap changer (OLTC) [2], reactive power regulator [3]. However, these methods cannot always regulate the voltage flexibly and effectively, because the voltage is different from the network without PV.…”

Section: Introductionmentioning

confidence: 99%

Coordinated control for voltage regulation of distribution network voltage regulation by distributed energy storage systems

Zhang

Dong

2018

Prot Control Mod Power Syst

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With more and more distributed photovoltaic (PV) plants access to the distribution system, whose structure is changing and becoming an active network. The traditional methods of voltage regulation may hardly adapt to this new situation. To address this problem, this paper presents a coordinated control method of distributed energy storage systems (DESSs) for voltage regulation in a distribution network. The influence of the voltage caused by the PV plant is analyzed in a simple distribution feeder at first. The voltage regulation areas corresponding to DESSs are divided by calculating and comparing the voltage sensitivity matrix. Then, a coordinated voltage control strategy is proposed for the DESSs. Finally, the simulation results of the IEEE 33-bus radial distribution network verify the effectiveness of the proposed coordinated control method.

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Section: Introductionmentioning

confidence: 99%

Coordinated control for voltage regulation of distribution network voltage regulation by distributed energy storage systems

Zhang

Dong

2018

Prot Control Mod Power Syst

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“…EVs V2G power participating in frequency and voltage down regulation is determined by the increment from initial state to final state, the mathematical expression is ΔP EV down = P down − P char (23) All the EVs in the power grid can supply a total available power as…”

Section: Electric Vehicle Available Regulation Capacity Modellingmentioning

confidence: 99%

“…Voltage regulation is always an important problem in distribution network, nowadays many techniques for voltage support in distribution network have been proposed. Generally, the methods for voltage regulation include controlling the reactive power generation [21], using the tap changer transformers [22,23], increasing the conductor size [24], and installing a voltage regulator [25].…”

Section: Introductionmentioning

confidence: 99%

Unified strategy for electric vehicles participate in voltage and frequency regulation with active power in city grid

Xiang

Yang

2019

IET Generation, Transmission & Distribution

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“…The tap position of these transformers is traditionally controlled by means of the local voltage measurements [6]. This method is considered not suitable [7] in presence of the bidirectional power flows especially when optimality of the power flow is not considered. Thus, it has been studied numerically with help of optimal control algorithm to automatically regulate the feeder voltages with the minimum errors [8,9]; but there is no experimental data available to support the effectiveness of the methods in [8,9].…”

Section: Introductionmentioning

confidence: 99%

Automatic Voltage Stabilization Using IGBT Based on Load Tap Changer With Fault Consideration

2021

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In this work, a voltage regulation scheme to stabilize voltage variation in the consumer side is proposed. The voltage regulation scheme uses IGBT-based onload tap changer (OLTC) and nonlinear hysteresis control algorithm. The proposed switching algorithm establishes the commutation of the taps without redundant short circuit operation of the taps. The experimental results of the designed system show accurate voltage regulation at the consumer side and high ability of the designed system to fix voltage sag and voltage swell in maximum of one cycle period. The paper considers the consequences of fault in the drive circuit of the IGBT tap changer and discusses its reliability. The analysis and the experimental results of the faults in the drive circuit show that the loss of one drive signal results in a large circulating DC current in the primary circuit and may result in fault current of value more than three times the operated current, which leads to unavailability of the system. INDEX TERMSOn load tap changer, voltage regulation, distribution transformer, IGBT, OLTC fault analysis.

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Transformer Voltage Regulation—Compact Expression Dependent on Tap Position and Primary/Secondary Voltage

Cited by 25 publications

References 2 publications

Coordinated control for voltage regulation of distribution network voltage regulation by distributed energy storage systems

Coordinated control for voltage regulation of distribution network voltage regulation by distributed energy storage systems

Unified strategy for electric vehicles participate in voltage and frequency regulation with active power in city grid

Automatic Voltage Stabilization Using IGBT Based on Load Tap Changer With Fault Consideration

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