Study of energy management for decreasing reverse power flow from photovoltaic power systems

Hatta, Hiroyuki; Asari, Masahiro; Kobayashi, Hiromu

doi:10.1109/sae.2009.5534838

Cited by 42 publications

(15 citation statements)

References 6 publications

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“…However, there is a critical problem for applying distributed generation into the main power system. When the volume of the distributed generation is increased, the reverse power flow from the distributed generation can cause problems, such as a voltage rise at the distribution line [27]. Therefore, analysis of the reverse power flow due to the interconnection of the distributed energy resource with an LVDC distribution system is very important.…”

Section: Analysis Of Reverse Power Flow By Interconnection Of a Pv Symentioning

confidence: 99%

Modeling and Analysis of a Low-Voltage DC Distribution System

Han

Gwon

et al. 2015

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Abstract:It is well known that the Low-Voltage DC (LVDC) distribution system is a promising topology as a future smart distribution system due to its high efficiency and reliability. However, there are still some challenges in the construction and implementation of an LVDC system. For practical application of the LVDC system, therefore, it is necessary to perform any simulation in advance by considering various conditions that can occur in an LVDC system. In order to provide a foundation for analyzing a DC system, this paper presents an LVDC distribution system model including essential components such as power electronic devices, Distributed Energy Resource (DER), and Energy Storage System (ESS), which can be considered for implementation in an LVDC system using Electro-Magnetic Transient Program (EMTP) software. Moreover, an analysis of the characteristic in both the steady state and the transient state is conducted in an LVDC distribution system.

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Section: Analysis Of Reverse Power Flow By Interconnection Of a Pv Symentioning

confidence: 99%

Modeling and Analysis of a Low-Voltage DC Distribution System

Han

Gwon

et al. 2015

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“…Major functions of the SDI are communication, monitoring and controlling. The central control system controls the voltage and power flow of whole distribution systems communicating with the SDI through the communication network [10]- [12]. DG1 …”

Section: Configuration Of Distribution System For Remote Control Mmentioning

confidence: 99%

Reactive power control method between DG using ICT for proper voltage control of utility distribution system

Kobayashi

Hatta

2011

2011 IEEE Power and Energy Society General Meeting

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Penetration of distributed power generation (DG) such as photovoltaic systems is increasing for reducing CO 2 emission etc. The large penetration may lead to excessive voltage rise in the utility distribution line by reverse power flow. DG usually reduces the active output power to restrain the voltage rise according to Japanese grid-interconnection code. As the result, large energy loss may occur in the large penetration. Reactive power control method of DG is a measure for restraining the active power reduction. However, sufficient reactive power may not be obtained with conventional local autonomous control of DG by monitoring distribution line voltage because the voltage is usually different according to location. In this study, a proper reactive power sharing method between DG using ICT to prevent the reduction of active power is proposed. The availability and effect of the proposed method are confirmed by demonstration test and simulation analyses.

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“…First, It has affinity with dispersion type power sources such like photovoltaic power generations and wind turbine generations. In current power systems, reverse power flow from dispersion type sources causes problems including voltage fluctuations that degrade power line quality to neighboring consumers [5]. In contrast, reverse power flow with power packets does not cause such problems because of collision avoidance executed among power fragments in power lines.…”

Section: Introductionmentioning

confidence: 99%

Pulsed Power Network Based On Decentralized Intelligence For Reliable And Lowloss Electrical Power Distribution

Sugiyama

2015

Journal of Artificial Intelligence and Soft Computing Research

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Pulsed power network is proposed for reliable and low loss electrical power distribution among various type of power sources and consumers. The proposed scheme is a derivative of power packet network so far investigated that has affinity with dispersion type power sources and has manageability of energy coloring in the process of power distribution. In addition to these advantages, the proposed scheme has system reliability and low loss property because of its intelligent operation performed by individual nodes and direct relaying by power routers. In the proposed scheme, power transmission is decomposed into a series of electrical pulses placed at specified power slots in continuous time frames that are synchronized over the network. The power slots are pre-reserved based on information exchanges among neighboring nodes following inherent algorithm of the proposed scheme. Because of this power slots reservation based on decentralized intelligence, power pulses are directly transmitted from various power sources to consumers with the least power dissipation even though a partial failure occurs in the network. The network operations with the proposed scheme is simulated to confirm the algorithms for the power slots reservation and to evaluate the power network capacity.

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Study of energy management for decreasing reverse power flow from photovoltaic power systems

Cited by 42 publications

References 6 publications

Modeling and Analysis of a Low-Voltage DC Distribution System

Modeling and Analysis of a Low-Voltage DC Distribution System

Reactive power control method between DG using ICT for proper voltage control of utility distribution system

Pulsed Power Network Based On Decentralized Intelligence For Reliable And Lowloss Electrical Power Distribution

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