Grid Forming: Industry Status and Expected Developments

Lecture 1 (40 min.)
Grid Forming Inverters: Modeling, analysis, and road to performance standardization – An Update
Deepak Ramasubramanian (EPRI, USA)

With many power systems around the world rapidly going towards high percentage of inverter based resources, the concept of grid forming will be important. This tutorial will provide a detailed discussion on the notion of grid forming and what it entails. It goes beyond the aspect of voltage source behind impedance and showcases the importance of hierarchy of control within an IBR plant. Delivery of services and focus on performance is stressed. Further, the tutorial will walk through details of developing simulation models and identification of grid forming property from these models. Finally, through the use of application examples, a preliminary road to standardization will be discussed.

Discussion &  Short Break (10 min)

Lecture 2 (40 min.)
Global Landscape of Grid Forming Interconnection Requirements
Julia Matevosyan (ESIG, USA)

With grid forming controls being considered as one of the solutions for reliable integration of high shares of inverter-based resources (wind, solar, storage), there is a need to define interconnection requirements (or grid codes) and performance expectations for this technology. Around the world there is a growing number of entities that has already started working on grid codes for grid forming technology, among those National Grid Electricity System Operator (NGESO) in Great Britain, Australian Energy and Markets Operator (AEMO) and ENTSO-E. North American Reliability Corporation has also developed a white paper listing out grid forming capabilities and how a utility or a system operator wanting to deploy this technology today should test for grid forming capabilities through simulations and some of the independent system operators (ISO), e.g. Electric Reliability Council of Texas (ERCOT), Midcontinental ISO (MISO) have followed with requiring all future batteries to be grid forming. This part of the tutorial will cover capabilities sought from grid forming inverter-based resources by the system operators and compare various existing or proposed requirements.

Discussion &  Short Break (10 min)

Coffee Break

Lecture 3 (40 min.)
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Discussion & Short Break (10 min)

Lecture 4 (40 min.)
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Discussion & Short Break (10 min)

Short Break

Lecture 5 (40 min.)
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Discussion (10 min)

LUNCH