Evaluating Utility-Scale PV-Battery Hybrids in an Operational Model for the Bulk Power System

Durvasulu, Venkat; Murphy, Caitlin; Denholm, Paul

doi:10.2172/1780668

Title: Evaluating Utility-Scale PV-Battery Hybrids in an Operational Model for the Bulk Power System

Full Record
Other Related Research

Abstract

Systems that combine solar photovoltaic and battery energy storage technologies (PV-BES) are increasingly being proposed and deployed on the bulk power system. The operations and value of PV-BES systems have been extensively studied from the project developer's perspective through analyses that maximize plant-level revenue. However, PV-BES hybrids' operational characteristics are seldom studied from the perspective of bulk power system operators, who seek to optimize the performance of a suite of generation and storage assets that are connected via the transmission network. This work presents modeling approaches for representing and evaluating PV-BES hybrids in a model that optimizes operations across the bulk power system. Its novel contributions include demonstrating a technique to modify a unit commitment and dispatch model to represent the operational synergies of PV-BES hybrids. In particular, we describe the challenges and an approach for representing so-called DC-coupled PV-BES - which utilize a single bi-directional inverter - as a dispatchable resource in a commercial, production cost model (PCM), PLEXOS. We demonstrate this technique in a PCM study of the Los Angeles Department of Water and Power (LADWP) test system, by replacing existing PV and battery generators on the test system with our PV-BES hybrids. We then pursue scenario analysismore »« less

Authors:

Durvasulu, Venkat ^[1]; Murphy, Caitlin ^[1];

^[1]

National Renewable Energy Lab. (NREL), Golden, CO (United States)

Publication Date:: 2021-04-01

Research Org.:: National Renewable Energy Lab. (NREL), Golden, CO (United States)

Sponsoring Org.:: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Solar Energy Technologies Office; USDOE Office of Energy Efficiency and Renewable Energy (EERE), Strategic Programs Office

OSTI Identifier:: 1780668

Report Number(s):: NREL/TP-6A20-78850
MainId:32767;UUID:0c3b7afc-b0cd-48d7-989a-d0e6e067a734;MainAdminID:22307

DOE Contract Number:: AC36-08GO28308

Resource Type:: Technical Report

Country of Publication:: United States

Language:: English

Subject:: 14 SOLAR ENERGY; 24 POWER TRANSMISSION AND DISTRIBUTION; 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; DC-coupled; PV+battery; hybrid; production cost model; optimization; system

Citation Formats


                    Durvasulu, Venkat, Murphy, Caitlin, and Denholm, Paul. Evaluating Utility-Scale PV-Battery Hybrids in an Operational Model for the Bulk Power System.  United States: N. p., 2021. 
        Web.  doi:10.2172/1780668.

Copy to clipboard


                    Durvasulu, Venkat, Murphy, Caitlin, & Denholm, Paul. Evaluating Utility-Scale PV-Battery Hybrids in an Operational Model for the Bulk Power System.  United States.  https://doi.org/10.2172/1780668

Copy to clipboard


                    Durvasulu, Venkat, Murphy, Caitlin, and Denholm, Paul. 2021.  
        "Evaluating Utility-Scale PV-Battery Hybrids in an Operational Model for the Bulk Power System".  United States.  https://doi.org/10.2172/1780668.  https://www.osti.gov/servlets/purl/1780668.

Copy to clipboard


                    
@article{osti_1780668,

  title        = {Evaluating Utility-Scale PV-Battery Hybrids in an Operational Model for the Bulk Power System},

  author       = {Durvasulu, Venkat and Murphy, Caitlin and Denholm, Paul},

  abstractNote = {Systems that combine solar photovoltaic and battery energy storage technologies (PV-BES) are increasingly being proposed and deployed on the bulk power system. The operations and value of PV-BES systems have been extensively studied from the project developer's perspective through analyses that maximize plant-level revenue. However, PV-BES hybrids' operational characteristics are seldom studied from the perspective of bulk power system operators, who seek to optimize the performance of a suite of generation and storage assets that are connected via the transmission network. This work presents modeling approaches for representing and evaluating PV-BES hybrids in a model that optimizes operations across the bulk power system. Its novel contributions include demonstrating a technique to modify a unit commitment and dispatch model to represent the operational synergies of PV-BES hybrids. In particular, we describe the challenges and an approach for representing so-called DC-coupled PV-BES - which utilize a single bi-directional inverter - as a dispatchable resource in a commercial, production cost model (PCM), PLEXOS. We demonstrate this technique in a PCM study of the Los Angeles Department of Water and Power (LADWP) test system, by replacing existing PV and battery generators on the test system with our PV-BES hybrids. We then pursue scenario analysis that is designed to isolate the various drivers of operational strategies for DC-coupled PV-BES hybrids, including the nature of coupling, PV penetration on the system, and varying inverter loading ratios (or degrees of over-sizing of the PV field). Results from the analysis include utilization profiles for the PV DC energy across available pathways, dispatch profiles for the battery component, and the hybrid technologies' impacts on system-wide production costs. The approach presented in this paper can be used in any PCM that is looking to study PV-BES hybrids as a resource in different power system configurations and services.},

  doi          = {10.2172/1780668},

  url          = {https://www.osti.gov/biblio/1780668},
  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2021},

  month        = {4}

}

Copy to clipboard

Technical Report:

View Technical Report

https://doi.org/10.2172/1780668

Save / Share:

Export Metadata

Save to My Library

Similar records in OSTI.GOV collections:

Modular HF Isolated MV String Inverters Enable a New Paradigm for Large PV Farms

Technical Report Divan, Deepak

The “Modular HF Isolated MV String Inverters Enable a New Paradigm for Large PV Farms” project focuses on exploring alternative power converter and system-level plant configurations to achieve the lowest cost and highest energy output for a given solar plus storage (e.g., PV + battery) plant, including the use of medium voltage (MV) collection while taking into account detailed models of all elements. To realize this objective, four approaches were utilized (i) employ a novel Medium Voltage String Inverter (MVSI) topology (soft switching solid state transformer – S4T) to convert 1000 Vdc to 4.16 kVac; (ii) plant collection using standard,more »« less
https://doi.org/10.2172/1907385

Full Text Available
The evolving energy and capacity values of utility-scale PV-plus-battery hybrid system architectures

Journal Article Schleifer, Anna; Murphy, Caitlin; Cole, Wesley; ... - Advances in Applied Energy

In this study, we explored how the value of hybrid systems comprising solar photovoltaics (PV) and lithium-ion battery storage could evolve over time. Using a price-taker model with hourly energy and capacity prices projected to 2050, we simulated the revenue-maximizing dispatch of three PV-plus-battery architectures, with fixed component sizing, in three locations. The architectures reflect different coupling types, which vary in terms of whether the PV and battery systems have separate inverters or a shared inverter and whether the battery can charge from the grid. We found that the highest-value architecture today varies largely based on PV penetration and themore »« less
https://doi.org/10.1016/j.adapen.2021.100015
Complementarity of Renewable Energy-Based Hybrid Systems

Technical Report Murphy, Caitlin; Harrison-Atlas, Dylan; Grue, Nicholas; ...

Increased attention has focused on scenarios of rapid and deep decarbonization of the U.S. electricity supply, with least-cost solutions typically involving significant expansion of renewable energy, energy storage, and transmission assets. Strategies that enable the integration of renewable energy projects while minimizing transmission expansion could be especially valuable in the future. It is within this context that the concept of hybrid power plants (or hybrid energy systems) has gained prominence. One specific example is the FlexPower concept, which seeks to demonstrate how coupling variable renewable energy (VRE) and energy storage technologies can result in renewable-based hybrid power plants that providemore »« less
https://doi.org/10.2172/1972008

Full Text Available
Exploring the design space of PV-plus-battery system configurations under evolving grid conditions

Journal Article Schleifer, Anna; Murphy, Caitlin; Cole, Wesley; ... - Applied Energy

In this study, we explore how the energy and capacity values of coupled systems comprising solar photovoltaic arrays and battery storage (PV-plus-battery systems) could evolve over time based on the evolution of the bulk power system. Using a price-taker model with simulated hourly energy and capacity prices projected from the present to 2050, we simulate the revenue-maximizing dispatch of a range of DC-coupled PV-plus-battery configurations in three locations in the United States. These configurations are defined by the inverter loading ratio (ILR, the ratio of the PV array capacity to the inverter capacity, which we vary from 1.4 to 2.6)more »« less
https://doi.org/10.1016/j.apenergy.2021.118339

Full Text Available
CyDER: A Cyber Physical Co-simulation Platform for Distributed Energy Resources in Smartgrids

Technical Report Gehbauer, Christoph

The CyDER project aimed at developing an open-source, modular and scalable co-simulation platform for power grids with large shares of Distributed Energy Resources (DERs). The project partners are the Lawrence Berkeley National Lab (LBNL), Lawrence Livermore National Lab (LLNL), PG&E, SolarCity, and ChargePoint. The prime recipient is LBNL; SolarCity and ChargePoint were partners for the project’s first two years. Increased DER integration introduces a number of challenges in power grid operation including a more dynamic interaction between the transmission grid and distribution grids, and increased modeling complexity. Although specialized software exists to precisely model different components of the power system,more »« less
https://doi.org/10.2172/1634767

Full Text Available

Similar Records