Impact of STATCOMs in Dominion Energy's System Restoration Plan

The goal of a system restoration plan is to re-energize the entirety of the power system as quickly as possible. Identifying a cranking path at the 500 kV level can help to decrease the downtime after a blackout and to rapidly restore critical loads. Along the identified cranking path, energizing hi...

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Bibliographic Details
Published in2020 IEEE/PES Transmission and Distribution Conference and Exposition (T&D) pp. 1 - 6
Main Authors Niemann, Bernd, Liu, Ren, Yang, Duotong, Wang, Yajun, Pinceti, Andrea
Format Conference Proceeding
LanguageEnglish
Published IEEE 12.10.2020
Subjects
Automatic voltage control
blackstart
cranking path
electrical system restoration
Generators
Inductors
Natural gas
Power transmission lines
Reactive power
STATCOM
Switches
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Summary:The goal of a system restoration plan is to re-energize the entirety of the power system as quickly as possible. Identifying a cranking path at the 500 kV level can help to decrease the downtime after a blackout and to rapidly restore critical loads. Along the identified cranking path, energizing high voltage transmission lines requires capacitive/inductive reactive power compensation. Restoring loads and/or switching capacitors/inductors provide a certain amount of reactive power. However, manually switching these shunt compensation devices could cause transient/sustained over-voltages or dynamic instability. Instead of using fixed switched reactive power compensation, the use of Static Synchronous Compensators (STATCOMs) as a potential blackstart resource is considered to provide dynamic reactive power support. In this paper, the impact of a STATCOM on the restoration process is investigated. The study is conducted based on an identified cranking path at the 500 kV level in Dominion's system network. Simulation results in PSS/E and PSCAD show that implementing a STATCOM brings significant benefits to the system restoration process.
ISSN:2160-8563
DOI:10.1109/TD39804.2020.9299902