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4 Models for Transmission Planning
Pages 31-40

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From page 31...
... ; Branden Sudduth, W ­ estern Electricity Coordinating Council (WECC) ; and Amos Ang, S ­ outhern California Edison (SCE)
From page 32...
... For example, steady-state and dynamic power flow modeling tools are needed to study and plan for Automatic Operator Generation Operations Protection Investment Controls Actions Dispatch Real-time Short-circuit, Steady-State Contingency Optimal Power Generation and Planning Electromagnetic and Dynamic Analysis, Flow, Transmission Tools Transient Power Flow Short-term Production Cost Expansion Forecasting Simulation Changing Multiple Planning Based on Technological Resource Mix, Contingencies Market Structure Synchronous Change, Challenges Digital Generation Resource and Behavior Public Policies Technologies Variability hour-ahead scheduling and resolution of most renewables one a.c. cycle AGC signal integration studies dynamic synchro-phasors system wind and solar protective relay output variation service high-frequency response T&D planning operation restoration carbon emission switching devices, (stability)
From page 33...
... The most significant challenges for transmission planning, according to Eto, are the changing resource mix, the challenges associated with incorporating new inverter-based generation technologies, modeling for resource variability, changing market structure and behavior, and understanding long-term impacts of new public policies and technologies. Transmission planning increasingly also requires careful investigation of the interplay between electric power and other sectors, and must also incorporate new factors, such as integrated transmission-distribution planning and cybersecurity, Eto said.
From page 34...
... More widespread support for publications focused on solving real engineering problems would better facilitate meaningful exchange between the two communities and enhance future solutions. DOUGLAS WELSH, GENERAL ELECTRIC Welsh, managing director of software at GE Energy Consulting, oversees multiple modeling products, including GE MAPS for production simulation, GE MARS for resource adequacy evaluation, and Positive Sequence Load Flow (PSLF)
From page 35...
... BRANDEN SUDDUTH, WESTERN ELECTRICITY COORDINATING COUNCIL Sudduth is vice president of reliability planning and performance analysis at WECC, the regional entity responsible for bulk power system reliability in the Western Interconnection. WECC uses models to perform reliability and economic analyses, with a focus on reliability impacts at an interconnection-wide perspective.
From page 36...
... The 2016 Blue Cut fire in California created unexpected periods of momentary cessation for certain inverterbased resources, which were previously unknown and so not incorporated into the models at the time. A final challenge, Sudduth said, is ensuring that the data used in bulk electric system modeling -- typically collected from a variety of sources including transmission planners, planning coordinators, and non­ traditional entities such as load serving entities that have information on rooftop solar panels -- are as accurate as possible.
From page 37...
... and other technologies; safety, reliability, and resiliency concerns; and improving models through accessibility and validation. HPC and Other Technologies The speakers were asked whether utilities were pursuing real-time digital simulators, cloud computing, data analytics, and other HPC technology to enhance electricity infrastructure modeling.
From page 38...
... Ang added that public policy could drive investment in renewable energy if it were balanced with financial incentives. A participant asked if current models accounted for nonwire alternatives (NWAs)
From page 39...
... Overbye also noted that most models do have extensive validation standards and requirements, but a challenge to making them open is that many models use protected grid information that cannot be made public. While recognizing that the vendor model code may never be fully open, a participant asked if open source tools could nonetheless help to improve modeling accuracy.
From page 40...
... 40 MODELS TO INFORM PLANNING FOR THE FUTURE OF ELECTRIC POWER those currently using them. Last, Bose pointed out that any new simulation tool should be designed to address a real problem, as opposed to a mere reworking of existing tools that only approximate the behavior of new technologies.


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