Title: Using distributed power electronics-based devices to improve the voltage and frequency stability of distribution systems

Abstract

Methods include, in response to a line frequency variation of a power grid, adjusting a voltage setpoint of a voltage regulator coupled to the power grid at a grid edge to maintain a voltage at the grid edge, wherein the adjusting the regulated voltage setpoint is configured to reduce the line frequency variation to stabilize the line frequency of the power grid. Apparatus include a voltage regulator configured to couple to a power grid at a grid edge and to maintain a voltage at the grid edge, wherein the voltage regulator is further configured to adjust a voltage setpoint of a voltage regulator in response to a line frequency variation of the power grid to reduce the line frequency variation and stabilize the line frequency of the power grid.

Inventors:

Du, Wei; Schneider, Kevin P.; Tuffner, Francis K.; Xie, Jing; Vu, Thanh T.

Issue Date:

2022-11-29

Research Org.:

Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1986874

Patent Number(s):

11515704

Application Number:

17/100,785

Assignee:

Battelle Memorial Institute (Richland, WA)

Patent Classifications (CPCs):

H - ELECTRICITY H02 - GENERATION H02J - CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

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H - ELECTRICITY H02 - GENERATION H02J - CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER

H02J2203/10 - Power transmission or distribution systems management focussing at grid-level, e.g. load flow analysis, node profile computation, meshed network optimisation, active network management or spinning reserve management
H02J2203/20 - Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
H02J3/00125 - {Transmission line or load transient problems, e.g. overvoltage, resonance or self-excitation of inductive loads
H02J3/12 - for adjusting voltage in ac networks by changing a characteristic of the network load
H02J3/1814 - {wherein al least one reactive element is actively controlled by a bridge converter, e.g. unified power flow controllers [UPFC]}
H02J3/241 - {The oscillation concerning frequency}

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

Y02E40/10 - Flexible AC transmission systems [FACTS]

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DOE Contract Number:  

AC05-76RL01830

Resource Type:

Patent

Resource Relation:

Patent File Date: 11/20/2020

Country of Publication:

United States

Language:

English