Opportunities for Energy Storage to Provide Spinning Reserve in Cordova, Alaska

Schenkman, Benjamin L.; Benson, C.E.; VanderMeer, Jeremy; Mueller-Stoffels, Marc; Koplin, Clay

doi:10.1109/speedam.2018.8445397

Cited by 3 publications

(5 citation statements)

References 11 publications

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“…Historically, the villagers reported 3 to 4 power interruptions per month, but recently the number of interruptions has increased due to the poor condition of the generators. Data logged during 163 days captured 69 power interruptions totaling 9.97 h of interrupted service; 30 of those were sustained interruptions lasting for a total of 7.93 h. 4 If extrapolated to a full year, those would result in annualized SAIFI and SAIDI indices of 67.23 and 17.76 h (1065.59 min), respectively. 5 These indices are much larger than averages for the USA and the state of Alaska in 2019 30 shown in Table 1.…”

Section: Reliability Concerns and Improvement With Bessmentioning

confidence: 99%

“…In these cases, the local electric power system (EPS) is commonly based on diesel-fueled generators but might also include renewable energy resources such as solar, wind, or hydro power. [1][2][3][4][5][6] When one or more of such technologies are combined with some form of energy storage, these systems are called hybrid energy systems (HESs). In small scale and remote HESs, electricity costs are often high, power quality is inadequate, and fuel supply and equipment maintenance logistics are challenging.…”

Section: Introductionmentioning

confidence: 99%

“…The flexibility and controllability of ESSs, which can absorb or inject energy in the network, can help to balance intermittent generation and fluctuating loads. Further, fast-acting storage devices such as battery ESSs (BESSs) can provide spinning reserves, regulate system frequency, time-shift renewable generation, improve grid resiliency, and help compliance with the operating limitations of generation sources, to name a few of their benefits, 4,8,9 and many have focused on the application of ESSs for renewable power grids.…”

Section: Introductionmentioning

confidence: 99%

“…BESSs have also been used to provide spinning reserves to self-sustaining communities. 4 The functionality of BESSs comes with a cost though. In spite of the significant cost reductions driven by electric vehicles, 10 investments in BESS can still be expensive.…”

Section: Introductionmentioning

confidence: 99%

“…11 To balance costs and benefits from BESSs, optimal sizing algorithms have been proposed. These methods are typically based on mathematical optimization algorithms, such as mixed-integer linear programming (MILP) 1,4,8,9 or heuristics, like genetic algorithms. 5 In this paper, we present contributions to the modeling of HESs containing BESSs, renewables, and diesel generation using a mixed-integer quadratic programming (MIQP) approach.…”

Section: Introductionmentioning

confidence: 99%

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Integration of energy storage with diesel generation in remote communities

Trevizan

Headley

Geer

et al. 2021

MRS Energy & Sustainability

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Highlights Battery energy storage may improve energy efficiency and reliability of hybrid energy systems composed by diesel and solar photovoltaic power generators serving isolated communities. In projects aiming update of power plants serving electrically isolated communities with redundant diesel generation, battery energy storage can improve overall economic performance of power supply system by reducing fuel usage, decreasing capital costs by replacing redundant diesel generation units, and increasing generator system life by shortening yearly runtime. Fast-acting battery energy storage systems with grid-forming inverters might have potential for improving drastically the reliability indices of isolated communities currently supplied by diesel generation. Abstract This paper will highlight unique challenges and opportunities with regard to energy storage utilization in remote, self-sustaining communities. The energy management of such areas has unique concerns. Diesel generation is often the go-to power source in these scenarios, but these systems are not devoid of issues. Without dedicated maintenance crews as in large, interconnected network areas, minor interruptions can be frequent and invasive not only for those who lose power, but also for those in the community that must then correct any faults. Although the immediate financial benefits are perhaps not readily apparent, energy storage could be used to address concerns related to reliability, automation, fuel supply concerns, generator degradation, solar utilization, and, yes, fuel costs to name a few. These ideas are shown through a case study of the Levelock Village of Alaska. Currently, the community is faced with high diesel prices and a difficult supply chain, which makes temporary loss of power very common and reductions in fuel consumption very impactful. This study will investigate the benefits that an energy storage system could bring to the overall system life, fuel costs, and reliability of the power supply. The variable efficiency of the generators, impact of startup/shutdown process, and low-load operation concerns are considered. The technological benefits of the combined system will be explored for various scenarios of future diesel prices and technology maintenance/replacement costs as well as for the avoidance of power interruptions that are so common in the community currently. Graphic abstract Discussion In several cases, energy storage can provide a means to promote energy equity by improving remote communities’ power supply reliability to levels closer to what the average urban consumer experiences at a reduced cost compared to transmission buildout. Furthermore, energy equity represents a hard-to-quantify benefit achieved by the integration of energy storage to isolated power systems of under-served communities, which suggests that the financial aspects of such projects should be questioned as the main performance criterion. To improve battery energy storage system valuation for diesel-based power systems, integration analysis must be holistic and go beyond fuel savings to capture every value stream possible.

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Section: Reliability Concerns and Improvement With Bessmentioning

confidence: 99%