Bulk Power System Dynamics with Varying Levels of Synchronous Generators and Grid-Forming Power Inverters

Yashen Lin; Brian Pierre; Hugo Villegas Pico; Ryan Elliott; Jack Flicker; Brian Johnson; Joseph Eto; Robert Lasseter; Abraham Ellis

doi:10.1109/PVSC40753.2019.8980733

Bulk Power System Dynamics with Varying Levels of Synchronous Generators and Grid-Forming Power Inverters

Yashen Lin, Brian Pierre, Hugo Villegas Pico, Ryan Elliott, Jack Flicker, Brian Johnson, Joseph Eto, Robert Lasseter, Abraham Ellis

Power Systems Engineering

Research output: Contribution to conference › Paper › peer-review

22 Scopus Citations

Abstract

Inverters using phase-locked loops for control depend on voltages generated by synchronous machines to operate. This might be problematic if much of the conventional generation fleet is displaced by inverters. To solve this problem, grid-forming control for inverters has been proposed as being capable of autonomously regulating grid voltages and frequency. Presently, the performance of bulk power systems with massive penetration of grid-forming inverters has not been thoroughly studied as to elucidate benefits. Hence, this paper presents inverter models with two grid-forming strategies: virtual oscillator control and droop control. The two models are specifically developed to be used in positive-sequence simulation packages and have been implemented in PSLF. The implementations are used to study the performance of bulk power grids incorporating inverters with gridforming capability. Specifically, simulations are conducted on a modified IEEE 39-bus test system and the microWECC test system with varying levels of synchronous and inverter-based generation. The dynamic performance of the tested systems with gridforming inverters during contingency events is better than cases with only synchronous generation.

Original language	American English
Pages	880-886
Number of pages	7
DOIs	https://doi.org/10.1109/PVSC40753.2019.8980733 https://doi.org/10.1109/PVSC40753.2019.8980733
State	Published - Jun 2019
Event	46th IEEE Photovoltaic Specialists Conference, PVSC 2019 - Chicago, United States Duration: 16 Jun 2019 → 21 Jun 2019

Conference

Conference	46th IEEE Photovoltaic Specialists Conference, PVSC 2019
Country/Territory	United States
City	Chicago
Period	16/06/19 → 21/06/19

Bibliographical note

See NREL/CP-5D00-74107 for preprint

NREL Publication Number

NREL/CP-5D00-76330

Keywords

Droop control
frequency control
gridforming inverters
inverter control
photovoltaic inverters
virtual oscillator control

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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Lin, Y., Pierre, B., Villegas Pico, H., Elliott, R., Flicker, J., Johnson, B., Eto, J., Lasseter, R., & Ellis, A. (2019). Bulk Power System Dynamics with Varying Levels of Synchronous Generators and Grid-Forming Power Inverters. 880-886. Paper presented at 46th IEEE Photovoltaic Specialists Conference, PVSC 2019, Chicago, United States. https://doi.org/10.1109/PVSC40753.2019.8980733, https://doi.org/10.1109/PVSC40753.2019.8980733

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title = "Bulk Power System Dynamics with Varying Levels of Synchronous Generators and Grid-Forming Power Inverters",

abstract = "Inverters using phase-locked loops for control depend on voltages generated by synchronous machines to operate. This might be problematic if much of the conventional generation fleet is displaced by inverters. To solve this problem, grid-forming control for inverters has been proposed as being capable of autonomously regulating grid voltages and frequency. Presently, the performance of bulk power systems with massive penetration of grid-forming inverters has not been thoroughly studied as to elucidate benefits. Hence, this paper presents inverter models with two grid-forming strategies: virtual oscillator control and droop control. The two models are specifically developed to be used in positive-sequence simulation packages and have been implemented in PSLF. The implementations are used to study the performance of bulk power grids incorporating inverters with gridforming capability. Specifically, simulations are conducted on a modified IEEE 39-bus test system and the microWECC test system with varying levels of synchronous and inverter-based generation. The dynamic performance of the tested systems with gridforming inverters during contingency events is better than cases with only synchronous generation.",

keywords = "Droop control, frequency control, gridforming inverters, inverter control, photovoltaic inverters, virtual oscillator control",

author = "Yashen Lin and Brian Pierre and {Villegas Pico}, Hugo and Ryan Elliott and Jack Flicker and Brian Johnson and Joseph Eto and Robert Lasseter and Abraham Ellis",

note = "See NREL/CP-5D00-74107 for preprint; 46th IEEE Photovoltaic Specialists Conference, PVSC 2019 ; Conference date: 16-06-2019 Through 21-06-2019",

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doi = "10.1109/PVSC40753.2019.8980733",

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Lin, Y, Pierre, B, Villegas Pico, H, Elliott, R, Flicker, J, Johnson, B, Eto, J, Lasseter, R & Ellis, A 2019, 'Bulk Power System Dynamics with Varying Levels of Synchronous Generators and Grid-Forming Power Inverters', Paper presented at 46th IEEE Photovoltaic Specialists Conference, PVSC 2019, Chicago, United States, 16/06/19 - 21/06/19 pp. 880-886. https://doi.org/10.1109/PVSC40753.2019.8980733, https://doi.org/10.1109/PVSC40753.2019.8980733

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AU - Pierre, Brian

AU - Villegas Pico, Hugo

AU - Elliott, Ryan

AU - Flicker, Jack

AU - Johnson, Brian

AU - Eto, Joseph

AU - Lasseter, Robert

AU - Ellis, Abraham

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N2 - Inverters using phase-locked loops for control depend on voltages generated by synchronous machines to operate. This might be problematic if much of the conventional generation fleet is displaced by inverters. To solve this problem, grid-forming control for inverters has been proposed as being capable of autonomously regulating grid voltages and frequency. Presently, the performance of bulk power systems with massive penetration of grid-forming inverters has not been thoroughly studied as to elucidate benefits. Hence, this paper presents inverter models with two grid-forming strategies: virtual oscillator control and droop control. The two models are specifically developed to be used in positive-sequence simulation packages and have been implemented in PSLF. The implementations are used to study the performance of bulk power grids incorporating inverters with gridforming capability. Specifically, simulations are conducted on a modified IEEE 39-bus test system and the microWECC test system with varying levels of synchronous and inverter-based generation. The dynamic performance of the tested systems with gridforming inverters during contingency events is better than cases with only synchronous generation.

AB - Inverters using phase-locked loops for control depend on voltages generated by synchronous machines to operate. This might be problematic if much of the conventional generation fleet is displaced by inverters. To solve this problem, grid-forming control for inverters has been proposed as being capable of autonomously regulating grid voltages and frequency. Presently, the performance of bulk power systems with massive penetration of grid-forming inverters has not been thoroughly studied as to elucidate benefits. Hence, this paper presents inverter models with two grid-forming strategies: virtual oscillator control and droop control. The two models are specifically developed to be used in positive-sequence simulation packages and have been implemented in PSLF. The implementations are used to study the performance of bulk power grids incorporating inverters with gridforming capability. Specifically, simulations are conducted on a modified IEEE 39-bus test system and the microWECC test system with varying levels of synchronous and inverter-based generation. The dynamic performance of the tested systems with gridforming inverters during contingency events is better than cases with only synchronous generation.

KW - Droop control

KW - frequency control

KW - gridforming inverters

KW - inverter control

KW - photovoltaic inverters

KW - virtual oscillator control

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T2 - 46th IEEE Photovoltaic Specialists Conference, PVSC 2019

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ER -

Bulk Power System Dynamics with Varying Levels of Synchronous Generators and Grid-Forming Power Inverters

Abstract

Conference

Bibliographical note

NREL Publication Number

Keywords

UN SDGs

Access to Document

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Cite this