A Study of Autonomous Decentralized Voltage Profile Control Method considering Control Priority in Future Distribution Network

IEEJ Transactions Elec Engng

et al. 2012

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The introduction of distributed generators (DGs) that can utilize renewable energy is of prime importance to solve the energy and environmental issues. When a distribution network has a large number of DGs, voltage maintenance becomes a serious problem. To solve this problem, we had proposed the ‘voltage profile control method’ using reactive power control of DGs. However, the control is limited to continuous reactive power control so far, and tap control has not been considered. It is important that the conventional voltage control equipment such as the load ratio tap changer (LRT) or step voltage regulator (SVR) is utilized in order to enhance the control efficiency of the voltage profile control method. Therefore, in this paper, we develop a new method that can realize a cooperative work between inverters and tap control of LRT and SVR. The proposed method is tested in 8‐ and 24‐node model systems and its effectiveness is shown. © 2012 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.

“…According to the above assumptions, the multiagent technology proposed in our previous papers is utilized for inverter control (see Ref. [14]). Agent programs are introduced to all DGs.…”

Section: Autonomous Decentralized Control Of Invertermentioning

confidence: 99%

A study on cooperative tap control method for voltage profile maintenance in distribution networks with distributed generators

Nguyen

IEEJ Transactions Elec Engng

et al. 2012

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“…However, with high penetration of PV into a power grid, it is predicted that voltage rise caused by reverse power flow and frequency fluctuations caused by PV output will be problematic. Moreover, investigations of voltage/reactive power control using static voltage compensators (SVCs) and power conditioning systems (PCSs) of PV plants have been carried out [10,11]. As regards grid voltage, there are studies on voltage control using load ratio control transformers (LRTs) and step voltage regulators (SVRs) [9,10].…”

Section: Introductionmentioning

confidence: 99%

A Study on Cooperative Voltage and Frequency Control Method Using Distributed Generations Considering Large Penetration of Renewable Energy Sources

Shiohara

Electrical Engineering Japan

et al. 2016

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SUMMARY In order to solve energy and environmental issues, the introduction of photovoltaics (PVs) has been progressed in recent years. Due to the uncertain PV output fluctuation depending on the weather conditions, the proper frequency management becomes an important issue when a large amount of PVs are included in power systems. On the other hand, since the voltage increase in the end of feeder lines can be caused by the reverse power flow in distribution systems with PVs, it is needed to enhance the voltage controllability. When gas engine generators are included in distribution systems, they can contribute to both frequency and voltage control issues. However, the coordination between those control purposes will be another problem because the frequency and voltage controls have interactions each other. Hence, in this paper, we developed a distributed frequency control method taking into account the voltage constraint in distribution systems.

“…But inverter‐connected distributed generators can contribute to voltage limitation by controlling the reactive power in the inverter, and thus they may be able to avoid or at least ease the occurrence of output limitation. We previously proposed a method to take advantage of reactive power limitation as described above in a group of distributed generators spread across the whole area of a distribution network as a “voltage profile control method,” and evaluated an implementation of our method .…”

Section: Introductionmentioning

confidence: 99%

Real‐Time Pricing of Reactive Power in the Voltage Profile Control Method of a Future Distribution Network

Koide

Electrical Engineering Japan

et al. 2014

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SUMMARY It is of great importance to solve the voltage maintenance problem caused by the introduction of a large number of distributed generators. We have proposed a “voltage profile control method” using reactive power control for distributed generators, and in previous works we developed new systems that can provide economic incentives to owners of distributed generators who cooperate with voltage profile management. However, it is difficult to apply the proposed economic systems to real‐time operation because they are based on optimization technology and the specific amount of incentive is given after the control action has ended. Therefore, in this paper we develop a new method that can determine the amount of incentives in real time and encourage the customers to cooperate with the voltage profile control method. The proposed method was tested in a one‐feeder distribution network and its effectiveness was demonstrated. © 2014 Wiley Periodicals, Inc. Electr Eng Jpn, 187(1): 1–15, 2014; Published online in Wiley Online Library (http://wileyonlinelibrary.com). DOI 10.1002/eej.22427