Quantitative Analysis Method of Output Loss due to Restriction for Grid-connected PV Systems

Ueda, Yoshisuke; Oozeki, Takashi; Kurokawa, Kosuke; Itou, Takamitsu; Kitamura, Kiyoyuki; Miyamoto, Yusuke; Yokota, Masaharu; Sugihara, Hiroyuki

doi:10.1541/ieejpes.125.1317

Cited by 9 publications

(5 citation statements)

References 3 publications

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“…For example, if demand in January to June is higher than that in July to December, then high‐load operation increases during battery charge‐discharge or power supply from PV to distribution board, and the loss rate may decrease. Besides, if air temperature is low, then the loss rate may decrease because of smaller losses due to the rise in PCS internal temperature, 18 and so forth.…”

Section: Premises Of Analysismentioning

confidence: 99%

Analysis of partial load loss of the PCS and internal storage battery loss in residential PV power generation and storage battery systems

Yamada,

Nishio

2024

Elect Comm in Japan

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This study aims to quantify the amount of loss due to partial load of power conditioning system (PCS) and internal loss of storage battery in residential photovoltaic (PV) power generation and storage battery system by using home energy management system (HEMS) data. After identifying the configuration of the PV power generation and storage battery system, HEMS data on PV power generation, household demand, storage battery charging, storage battery discharging, purchased power and sold power were extracted and analyzed according to the research purpose. As a result, the loss due to partial load of the PCS and the average internal loss of the storage battery were quantified. In addition, it was confirmed that a more realistic system simulation could be performed by considering the impact of the partial load of the PCS and the average internal loss of the storage battery.

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Section: Premises Of Analysismentioning

confidence: 99%

Analysis of partial load loss of the PCS and internal storage battery loss in residential PV power generation and storage battery systems

Yamada,

Nishio

2024

Elect Comm in Japan

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“…Operating in this manner would violate many of the assumptions that were made when the system was built. One of the largest concerns is the potential voltage rise that could occur with solar PV inverters feeding back into the feeders (Ueda et al 2005a(Ueda et al , 2005b and (PG&E 2008). Because the voltage is assumed to drop continually on a distribution feeder (Kersting 2007), it is common practice to set the voltage high at the substation.…”

Section: H2 Review H21 Power Production With Solar Pvmentioning

confidence: 99%

The Smart Grid: An Estimation of the Energy and CO2 Benefits

Pratt¹,

Balducci²,

Gerkensmeyer³

et al. 2010

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This report articulates nine mechanisms by which the smart grid can reduce energy use and carbon impacts associated with electricity generation and delivery. The quantitative estimates of potential reductions in electricity sector energy and associated CO 2 emissions presented are based on a survey of published results and simple analyses. This report does not attempt to justify the cost effectiveness of the smart grid, which to date has been based primarily upon the twin pillars of cost-effective operation and improved reliability. Rather, it attempts to quantify the additional energy and CO 2 emission benefits inherent in the smart grid's potential contribution to the nation's goal of mitigating climate change by reducing the carbon footprint of the electric power system. v SummaryThis report provides an assessment of nine mechanisms by which the smart grid can reduce energy use and carbon impacts associated with electricity generation and delivery. To the extent possible, the associated reductions in electricity and CO 2 emissions were quantified to illustrate the benefits inherent in the smart grid's potential contribution to the nation's goal of mitigating climate change from reducing the carbon footprint of the electric power system. Environmental impacts to air and water quality and land use were not considered, nor were impacts on end users that rely upon natural gas as their energy source.The reductions in electric utility electricity and CO 2 emissions in 2030 attributable to the nine mechanisms by direct and indirect effect are shown in Table S.1. The direct reductions were calculated for the mechanisms that affected electricity and CO 2 emissions directly through implementation of the smart grid technologies. Indirect reductions are derived by translating the estimated cost savings in energy and/or capacity into their energy and carbon equivalents through purchase of additional costeffective energy efficiency. This can represent a policy decision to reinvest the savings to purchase additional more cost effective energy efficiency and renewable resources. (a) Assumes 100% penetration of the smart grid technologies.The estimates in Table S.1 are based on the annual electricity supplied to the U.S. grid and the associated CO 2 emissions in 2030, as forecast by the U.S. Energy Information Agency. They represent the percentage reduction in the annual U.S. electrical energy production and resulting CO 2 reductions, based on the emissions of average U.S. generating power plant. This allows the percentage reductions to be placed in context with RPSs for their electric system that have been already adopted by many states, typically 20% or more over a period of one or two decades. viThe uncertainties in these estimates are relatively high, based on the range of estimates provided by the studies drawn upon for this report, and the judgment of the authors. While the individual reduction estimates are typically judged to be uncertain in a range of ±50%, and in some cases larger, the variety inherent in t...

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“…The authors developed an evaluation method for PV systems and described it [1] together with loss quantification results and results of the analysis of output regulation due to high grid voltage. This method was limited to PV systems without shading.…”

Section: Quantified Loss Factors and Its Definitionmentioning

confidence: 99%

“…It was treated as an output regulation loss at AC voltages of less than 107 V in our previous work [1]. This loss includes output regulation due to the overtemperature of the PCS.…”

Section: Definition Of the Mpp Mismatch Lossmentioning

confidence: 99%

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Advanced analysis of grid‐connected PV system's performance and effect of batteries

Ueda

Kurokawa

Itou

et al. 2008

Electrical Engineering Japan

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SUMMARYAn advanced method of analysis for grid-connected PV systems is developed in this research. To investigate the issues which may arise in the clustered PV systems, a "Demonstration Project on Clustered PV Systems" was initiated in December 2002 in Oota, Japan, involving the installation of more than 500 residential PV systems in the demonstrative research area, and the development of battery-integrated PV systems to avoid restrictions on output power due to the raising of the grid voltage. The annual performance of commercial PV systems without battery was analyzed and a performance ratio of 80% on average was found to have been achieved. Overvoltage of power distribution lines and snow are two major factors capable of causing very low performance ratio on a daily basis. The effects of batteries have also been analyzed, and the results indicate that there will be some reduction of energy losses due to the grid voltage, but the PCS efficiency will be at least 8% worse than that of commercial PV systems. It was also found that nonoptimized battery operation sometimes results in a fully charged situation at noontime and maximum reverse power flow may not be minimized in this situation.

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Quantitative Analysis Method of Output Loss due to Restriction for Grid-connected PV Systems

Cited by 9 publications

References 3 publications

Analysis of partial load loss of the PCS and internal storage battery loss in residential PV power generation and storage battery systems

Analysis of partial load loss of the PCS and internal storage battery loss in residential PV power generation and storage battery systems

The Smart Grid: An Estimation of the Energy and CO2 Benefits

Advanced analysis of grid‐connected PV system's performance and effect of batteries

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