The Los Angeles 100% Renewable Energy Study (LA100): Chapter 7. Distribution System Analysis

Palmintier, Bryan; Mooney, Meghan; Horowitz, Kelsey; Abraham, Sherin; Elgindy, Tarek; Sedzro, Kwami Senam; Sigrin, Ben; Lockshin, Jane; Cowiestoll, Brady; Denholm, Paul

doi:10.2172/1958737

Cited by 5 publications

(4 citation statements)

References 3 publications

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“…Both analyses use distribution grid feeder 10 models from the original LA100 study (Palmintier et al 2021) as a starting point. The forecasted electricity consumption, EV and distributed solar and storage adoption and use, along with their time-series demand and generation profiles are estimated at the census-tract scale for representative customers.…”

Section: Modeling Approach Backgroundmentioning

confidence: 99%

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LA100 Equity Strategies. Chapter 12: Distribution Grid Upgrades for Equitable Resilience and Solar, Storage, and Electric Vehicle Access

Palmintier,

Abraham,

Sedzro

et al. 2023

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This report is available at no cost from the National Renewable Energy Laboratory (NREL) at www.nrel.gov/publications. U.S. Department of Energy (DOE) reports produced after 1991 and a growing number of pre-1991 documents are available free via www.OSTI.gov. Cover photo from iStock 874139412NREL prints on paper that contains recycled content. iv PrefaceThe Los Angeles 100% Renewable Energy Study, or LA100, revealed that although all communities in Los Angeles will share in the air quality and public health benefits of the clean energy transition, increasing equity in participation and outcomes will require intentionally designed policies and programs. The LA100 Equity Strategies project was specifically designed to help Los Angeles identify pathways to such policies and programs in the form of equity strategies. The project aimed to do this by incorporating research and analysis to chart a course toward specific, community-prioritized, and equitable outcomes from the clean energy transition outlined in the LA100 study. viiiResearch was guided by input from the community engagement process, and associated equity strategies are presented in alignment with that guidance. Community GuidanceGuidance from the LA100 Equity Strategies Steering Committee, listening sessions with community members co-hosted with community-based organizations, and community meetings included the following:• Invest in infrastructure capacity for all Angelenos by understanding that barriers to accessing clean, energy efficient technologies arise from multiple intersecting sociodemographic factors. For example, consider the citywide infrastructure and investments needed to ensure new clean technologies, such as EVs, will be available for all Angelenos to access and use. • Redress historical and ongoing neighborhood neglect: outdated infrastructure needs remediation and attention to safety and health concerns. • Develop strategies to upgrade the grid and electrical capacity (i.e., panels) of existing housing stock in Los Angeles without further burdening low-and moderate-income communities, particularly in historically disenfranchised neighborhoods. • Guarantee access to safe and comfortable shelter during disaster events, such as heat waves and fires, particularly when access to cooling and grid reliability in participants' homes is compromised. Community members often stated that they relied on spaces outside their homes to provide a safe and comfortable environment. • Provide safety upgrades to residential electrical infrastructure in disadvantaged communities (DACs).In buildings with older electrical systems, outages have additional impacts, such as causing safety risks and negatively affecting home appliances.

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Section: Modeling Approach Backgroundmentioning

confidence: 99%

“…Specifically, they were modeled as using a combination of Volt-VAR and Volt-Watt inverter controls, consistent with LADWP's planned requirements. See Palmintier et al 2021 Appendix A for specific curves. )…”

Section: • Collaborate With Community-based Organizations For Prepare...mentioning

confidence: 99%

LA100 Equity Strategies. Chapter 12: Distribution Grid Upgrades for Equitable Resilience and Solar, Storage, and Electric Vehicle Access

Palmintier,

Abraham,

Sedzro

et al. 2023

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“…Hence, several cases of higher solar PV penetration of up to 400% penetration level are created for Feeder 1 by random allocation. The procedure for this allocation was developed by the National Renewable Energy Laboratory during their LA100 study [32].…”

Section: Network Modelmentioning

confidence: 99%

The Impact of Detailed Distribution System Representation in Dynamic Sub-Transmission-Distribution Co-Simulation

Thakar

Vittal

Rojas³

2023

IEEE Open J. Power Energy

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There has been a significant growth in the distributed energy resources (DERs) connected to the distribution networks in recent years, increasing the need for modeling the distribution networks in detail in conjunction with the sub-transmission/transmission networks. This paper models a real distribution/ sub-transmission network using a three-phase/three-sequence co-simulation. One of the modeled distribution feeders has a high penetration of DERs with significant reverse power flow and is modeled including the secondary network. Custom user-defined models are used to represent the solar photovoltaic (PV) units on the feeder including advanced controls and abnormal voltage responses from IEEE 1547-2018 standard. The co-simulation framework developed supports power flow/steady state as well as dynamic analysis. Using this developed framework, this paper studies the impact of balanced and unbalanced faults applied to the distribution and sub-transmission networks. The impacts of the faults on the feeder with the high penetration of DERs are studied in terms of the solar PV units tripping due to under/overvoltages and the resulting change in the feeder-head flow. It is seen that the detailed modeling of the distribution network is needed for accurately capturing the response from the distribution-connected DERs during fault events both on the distribution as well as sub-transmission networks.

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“…To perform this analysis, an NREL-developed, open-source tool called Distribution Integration Solution Cost Options (DISCO) is utilized (NREL 2019). This is a Python-based tool that performs electric distribution system analyses like static and dynamic hosting capacity (Wang et al 2022), PV scenario generation (Sedzro, Emmanuel, and Abraham 2022), and automated upgrade cost analysis (Palmintier et al 2021) on feeders using the OpenDSS input models and has been used on multiple projects for analyses of this kind. As shown in Figure 16, the DISCO automated upgrades cost module first conducts power flow and identifies the overloaded lines and transformers, as well as any voltage issues that are present in the feeder.…”

Section: Estimating Distribution Grid Infrastructure Investmentsmentioning

confidence: 99%

Federal Aviation Administration Vertiport Electrical Infrastructure Study

Solanki,

Sanders,

Miller

et al. 2023

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The Los Angeles 100% Renewable Energy Study (LA100): Chapter 7. Distribution System Analysis

Cited by 5 publications

References 3 publications

LA100 Equity Strategies. Chapter 12: Distribution Grid Upgrades for Equitable Resilience and Solar, Storage, and Electric Vehicle Access

LA100 Equity Strategies. Chapter 12: Distribution Grid Upgrades for Equitable Resilience and Solar, Storage, and Electric Vehicle Access

The Impact of Detailed Distribution System Representation in Dynamic Sub-Transmission-Distribution Co-Simulation

Federal Aviation Administration Vertiport Electrical Infrastructure Study

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