IEEE Electrification - December 2022 - 93

NEWSFEED
Energy System Integration
Group Workshop on Grid-Forming
Inverter-Based Resources
By Julia Matevosyan and Deepak Ramasubramanian
I
N JUNE 2022, THE ENERGY
System Integration Group
(ESIG) held a Special Topic
Workshop on Grid-Forming InverterBased
Resources (GFM IBRs). The
focus was on breaking the chickenand-egg
issue impeding the broader
deployment of GFM technology.
Without having a clear understanding
of the state-of-the-art capabilities
of the equipment, grid operators cannot
require these capabilities from
IBRs. Without clear technical specifications
of the capabilities sought by
the grid operators, manufacturers do
not know what capabilities to include
in the equipment design.
ESIG's recent report " Grid-Forming
Technology in Energy Systems Integration "
proposed a solution to the
circular problem (Figure 1). The idea
is to define the target system based
on set environmental policy targets,
load growth expectations, and resilience
expectations; perform system
studies; identify the needs of this
future system; formulate the requirements
for system services and determine
the optimal form of provision
(market products or interconnection
requirements); specify performance
verification; and monitor
performance. This approach focuses
on system needs and provides
certainty to manufacturers and
Digital Object Identifier 10.1109/MELE.2022.3211129
Date of current version: 24 November 2022
developers regarding the needed
capabilities, available incentives, and
performance expectations. The workshop
agenda was built around this
proposed approach. Here, we provide
some key highlights.
The workshop began with a tutorial
on GFM IBR technology. The tutorial
examined the concepts of GFM
from the first principles, such as the
continued validity of Kirchhoff's
Laws in a 100% current source network.
With such a background, the
tutorial subsequently took a deep
dive into modeling and analysis
using GFM. Preliminary insights into
the specifications needed from GFM
were also touched upon.
Proposed Process for Deploying New Grid-Forming Capabilities
9
1
Monitor
performance.
Define
the target
system.
8
Implement
services.
IBR
developers
undergo testing
and qualification
for new
services.
7
Define
technical
benchmarking.
IBR
developers
evaluate and
build projects
to provide the
required system
services.
4
6
Determine
the economically
optimal form
of a service
provision.
5
Quantify
system
services.
Figure 1. Breaking the circular problem for deploying new inverter capabilities.
IEEE Electrification Magazine / DECEMBER 2022
93
Formulate
technical
requirements
for system
services.
Equipment
manufacturers
develop and
test required
capabilities.
3
Perform studies
to determine
the system
needs.
2
Define
the resilience
parameters.

https://orcid.org/0000-0003-3989-1739

IEEE Electrification - December 2022

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