A5076360090- Microgrid Control and Optimization
- Smart Grid Energy Management
- Optimal Power Flow Distribution
- Smart Grid Security and Resilience
- Real-time simulation and control systems
- Islanding Detection in Power Systems
- Energy Load and Power Forecasting
- Global Energy Security and Policy
- Wind Turbine Control Systems
- Distributed and Parallel Computing Systems
- Global Energy and Sustainability Research
- Power Systems and Technologies
- Infrastructure Resilience and Vulnerability Analysis
- Power Systems and Renewable Energy
- Electric Power System Optimization
- HVDC Systems and Fault Protection
- Multilevel Inverters and Converters
- Power System Optimization and Stability
- Hybrid Renewable Energy Systems
- Photovoltaic System Optimization Techniques
- Water-Energy-Food Nexus Studies
- Energy and Environment Impacts
- Power Systems Fault Detection
- Induction Heating and Inverter Technology
- Power Quality and Harmonics
National Renewable Energy Laboratory
2015-2024
Glenn Research Center
2023
National Aeronautics and Space Administration
2023
Case Western Reserve University
2023
University of Strathclyde
2023
University of Colorado Boulder
2023
Duchenne Parent Project
2022
3E (Belgium)
2022
University Surgical Associates
2022
National Statistical Institute of Portugal
2022
With the rapid integration of distributed energy resources (DERs), distribution utilities are faced with new and unprecedented issues. New challenges introduced by high penetration DERs range from poor observability to overload reverse power flow problems, under-over-voltages, maloperation legacy protection systems, requirements for planning procedures. Distribution utility personnel not adequately trained, control centers properly equipped cope these Fortunately, resource management systems...
Electric distribution systems around the world are seeing an increasing number of utility-owned and non-utility-owned (customer-owned) intelligent devices being deployed. New deployments assets include self-healing systems, microgrids, automation. Non-utility-owned solar photovoltaic generation, behind-the-meter energy storage electric vehicles. While these provide potential data control points, existing centralized architectures do not have flexibility or scalability to integrate variety...
The focus of this paper is on analyzing the impact conservation voltage reduction in presence active devices such as solar photovoltaic (PV) and developing controls that leverage these distributed energy resources. An event-driven predictive approach for real-time volt/volt-ampere reactive (VAR) optimization, along with a local two-level adaptive volt/VAR droop-based control algorithm advanced distribution management systems, introduced. methodology covers aggregated autonomous under...
This paper presents a test bed that utilities, vendors, and researchers can use to evaluate the performance of existing emerging advanced distribution management systems (ADMS) or specific applications such systems. The provides realistic laboratory setting, including detailed modeling power system, controller and/or hardware, industry-standard communication protocols. further represent current state utility's system anticipated with increased penetrations distributed energy resources, as...
This paper develops an integrated synchronization control technique for a grid-forming inverter operating within microgrid that can improve the microgrid's transients during transition operation. includes disconnection and reconnection control. The simulation results show developed works effectively to smooth angle change of Thus, are significantly improved compared case without
A doubly-fed induction generator grid side converter is studied under voltage disturbances. During dips, conventional current control techniques involving the decoupling of d-q axis in synchronous reference frame (SRF) exhibits oscillations stiff dc link voltage, as well active and reactive power outputs source (VSC). To mitigate oscillations, an advanced technique called sequence domain (SDC) evaluated. This approach implements individual controllers positive negative domains demonstrates...
Microgrids have long been deployed to provide power customers in remote areas as well critical industrial and military loads. Today, they are also being proposed grid-interactive solutions for energy-resilient communities. Such microgrids will spend most of the time operating while synchronized with surrounding utility grid but be capable separating during contingency periods due storms or temporary disturbances such local faults. Properly designed grid-integrated can flexibility,...
Power hardware-in-the-loop (PHIL) simulation, where actual hardware under text is coupled with a real-time digital model in closed loop, powerful tool for analyzing new methods of control emerging distributed power systems. However, without careful design and compensation the interface between simulated systems, PHIL simulations may exhibit instability modeling inaccuracies. This paper addresses issues that arise simulation battery inverter interfaced distribution feeder. Both stability...
This paper studies the coordinated use of smart inverters with legacy voltage regulating devices to help increase energy savings from conservation reduction (CVR) in distribution systems high photovoltaic penetration. Two optimization algorithms are developed evaluate CVR benefit by considering two types inverter functions: aggregated reactive power control and autonomous volt/VAR control. In each algorithm, coordinately controlled operation including load tap changers capacitor banks. Both...
This paper evaluated the impact of smart inverter Volt-VAR function on voltage reduction energy saving and power quality in electric distribution systems. A methodology to implement optimization was developed by controlling substation LTC capacitor banks, having inverters participate through their autonomous control. In addition, a scoring proposed utilized quantify effect system quality. All these methodologies were applied utility model evaluate under various PV penetrations densities.
This paper evaluates voltage regulation coordinated across advanced distribution management systems (ADMS), distributed energy resources (DERs), and resource (DERMS) using an hardware-in-the-loop (HIL) platform. The HIL platform provides a realistic laboratory testing environment, enabling accurate dynamic modeling of real-world system from utility partner, with real controller (ADMS DERMS) power hardware (DER) standard communications protocols. test results show proper performance the by...
Reliable and resilient grid operations with high penetration levels of distributed energy resources (DERs) can be achieved improved situational awareness seamless integration DERs utility enterprise controls. This paper presents the details development a data-enhanced hierarchical control (DEHC) architecture results its evaluation. The DEHC is hybrid framework that enables efficient, reliable, secure operation distribution grids extremely penetrations solar photovoltaic (PV) generation by...
This paper evaluates the performance of coordinated control across advanced distribution management systems (ADMS), distributed energy resources (DERs), and resource (DERMS) using an hardware-in-the-loop (HIL) platform. platform provides a realistic laboratory testing environment, including accurate dynamic modeling real-world system from utility partner, real controllers (ADMS DERMS), physical power hardware standard communications protocols. One grid service—voltage regulation—is evaluated...
Increasing renewable penetration and grid modernization initiatives are having a significant impact on the operating fault characteristics of distribution systems. As result, protection systems need to account for changing nuances in transient response disturbances resulting voltage and/or current ensure safe reliable operation. The approaches modeling analyzing power also evolve accordingly, based choice system. Therefore, this paper reviews state-of-the-art evolving future energy...
High Impedance Faults (HIFs) occur when energized power lines come into contact with high impedance ground surfaces, such as tree branches and grassland. HIFs have the potential to cause arcing, leading vegetation ignition initiation of wildfires. The challenge in detecting comes from partially conductive materials lines. They create a fault current low magnitude traditional protective devices struggle detect faults. This paper proposes novel HIF detection algorithm based upon analyzed...
The rapid development of energy storage technologies is motivating researchers to understand the possible value storage. This paper evaluates multiservice dispatch distribution-sited systems with realistic degradation models by integrating a optimization model distribution system simulator. work attempts define theoretical can bring when multiple streams are considered in modeling environment. Use cases presented this deliver services both and transmission stakeholders that provide positive...
The aggregation of distributed energy resources (DERs) enables them to provide various grid services as a virtual power plant (VPP). Utilities use enterprise control solutions, such advanced distribution management systems (ADMS) and resource (DERMS), efficiently integrate DERs realize the benefits VPP. These solutions can complement each other offer additional benefits. This paper evaluates coordinated operation an ADMS DERMS that collectively implements VPP peak demand reduction voltage...
This paper presents a hardware-in-the-loop (HIL) simulation to evaluate the performance of voltage regulation Data-Enhanced Hierarchical Control (DEHC). DEHC uses an advanced distribution management system (ADMS) for grid operations control legacy and grid-edge devices coordinate with distributed energy systems (DERMS) manage high penetrations photovoltaics (PV) on utility system. The HIL platform provides realistic laboratory testing, including accurate modeling (legacy devices, PV)...
Grid modernization for distribution systems comprises the ability to effectively monitor and manage unplanned events while ensuring reliable operation. The integration of distributed energy resources proliferation autonomous smart controllers such as microgrids inverters in networks challenges status quo system Advanced management (ADMS) technologies are being increasingly deployed complexities operating systems. evaluate ADMS applications specific utility environments future scenarios will...
In this paper, a method for estimating power injected into an electrical distribution system from spatially distributed residential PV systems using data ground-based weather stations is described. This was developed as part of the High Penetration Deployment Project at Arizona Public Service (APS). Verification predictive also described in paper. Finally, correlation statistics and production ramp rates are calculated irradiance based on measured within APS study area two different sets...