A LRT Control Method using Sensor Information in Distribution Systems with a Large Amount of PVs and EVs

Nose, Yotaro; Tsuji, Takeshi; Oyama, Tsutomu; Ito, Takaharu; Abe, Katsuya; Minami, Masaki; Ishibashi, Kazunari

doi:10.1541/ieejpes.136.390

Cited by 4 publications

(4 citation statements)

References 17 publications

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“…In Ref. [3], the total P T of consumed and generated powers between 2 LBSs is first determined based on the above (i), (ii) and (iii) measured with the LBSs. Then voltage profile on the MV distribution system with DGs is estimated based on P T and the measured voltage V L .…”

Section: Introductionmentioning

confidence: 99%

“…This paper describes a new method for estimating line voltage vectors and line current vectors on the particular locations of a MV distribution line with LV loads and DGs. Table I summarizes the characteristics of our method and previous studies [1][2][3][4][5][6][7][8]. As shown in the eighth line in Table I, our method performs calculation by considering separation of the actual load current and the actual generation current.…”

Section: Introductionmentioning

confidence: 99%

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State Estimation of Medium Voltage Distribution Line with Distributed Generations: Selected Utilization of Smart Meter Measurements

Hikoyama

Yokomizu

Nonoyama

et al. 2022

IEEJ Transactions Elec Engng

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With regard to a medium-voltage distribution system with low voltage electrical loads (hereafter written as ELs) and distributed generations (hereafter written as DGs), this study proposes a new calculation method for estimating electrical states such as lineto-line voltage vectors and line current vectors at connection points. The proposed method uses the following selected electrical data as input data: (i) active powers and reactive powers measured with the smart meters (hereafter written as SMs) on low voltage ELs and DGs and (ii) a line-to-line voltage and a current measured with a load break switch on the medium voltage distribution line, but does not use voltages and currents measured with the SMs on low voltage ELs and DGs. The selection of the used data attains reduction in the enormous number of data collected from SMs and also contributes to needless information on vast number of low voltage distribution lines such as their line impedances. Simulation results obtained, using the proposed method, show that the accurate electrical state of a medium voltage distribution line is derived through a small correction number for various generation powers of a DG. The knowledge acquired through this study is actually applied to the centralized voltage control system installed in an electric power company.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

State Estimation of Medium Voltage Distribution Line with Distributed Generations: Selected Utilization of Smart Meter Measurements

Hikoyama

Yokomizu

Nonoyama

et al. 2022

IEEJ Transactions Elec Engng

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“…In this context, many studies have been conducted on voltage regulation in distribution systems. Literature [1][2][3][4][5][6][7] explores new methods of voltage control using LRT (Load Ratio control Transformer) and SVR (Step Voltage Regulator) installed at distribution substations. With voltage regulation using LRT, SVR, and so on, voltage profile on the feeder terminal side can be controlled uniformly, thus producing a wide-range effect.…”

Section: Introductionmentioning

confidence: 99%

Voltage Regulation Utilizing Electric Vehicle Rapid Chargers in a Distribution System

Nakamura

Hara

Kita

et al. 2018

Electrical Engineering Japan

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From growing interests in the environment issues, promotion of photovoltaic power generation (PV) is accelerated in the world. Meanwhile, rapid chargers (RCs) for popularized electric vehicles are being installed in urban areas. These two trends in distribution system might cause severer voltage fluctuation problems. On the other hand, a RC can provide the reactive power support, which is capable of voltage regulation. Based on this viewpoint, this paper proposes a new framework of voltage regulation, in which the reactive power compensation by RCs is actively utilized. The proposed voltage regulation method combines two different control functions with consideration for overcompensation avoidance. This paper ascertains the validity of proposed voltage regulation method through numerical simulations. C⃝ 2018 Wiley Periodicals, Inc. Electr Eng Jpn, 204(3): 21-30, 2018; Published online in Wiley Online Library (wileyonlinelibrary.com).

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“…To solve the overvoltage problem, a series of studies have been performed. The operation and coordination of voltage control devices in a distribution system, such as on‐load tap changer (OLTC), step voltage regulator (SVR), static var compensator (SVC), shunt capacitor (SC), and/or shunt reactor (SR), are basic approaches from the distribution system operator's (DSO's) aspect . These studies aim at maintaining the grid voltage within the allowed range and to relieve the stress on mechanical‐switching‐based devices stress.…”

Section: Introductionmentioning

confidence: 99%

Coordinated control of OLTC and multi‐CEMSs for overvoltage prevention in power distribution system

Xie

Hara

Kita

et al. 2017

IEEJ Transactions Elec Engng

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The high degree of penetration of residential rooftop photovoltaic systems causes the overvoltage problem in power distribution systems. This paper aims to introduce demand‐side management for a distribution system for overvoltage prevention. A real‐time overvoltage prevention coordination scheme between an on‐load tap changer (OLTC) and multi‐community energy management systems (multi‐CEMSs) is proposed. The main objectives of this control are to relieve the stress in the OLTC tap operation using household schedulable loads and to maximize customer profit in each CEMS. The load scheduling performed by each CEMS is formulated as a combinatorial, nonlinear, time‐series scheduling optimization problem and is solved by a sequential search method named voltage‐ranking‐based load combination search algorithm. The effectiveness of the proposed method is validated in a model distribution system with1800 customers. © 2017 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.

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A LRT Control Method using Sensor Information in Distribution Systems with a Large Amount of PVs and EVs

Cited by 4 publications

References 17 publications

State Estimation of Medium Voltage Distribution Line with Distributed Generations: Selected Utilization of Smart Meter Measurements

State Estimation of Medium Voltage Distribution Line with Distributed Generations: Selected Utilization of Smart Meter Measurements

Voltage Regulation Utilizing Electric Vehicle Rapid Chargers in a Distribution System

Coordinated control of OLTC and multi‐CEMSs for overvoltage prevention in power distribution system

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