MODELS WECC AND OTHER ISO’S EXPERIENCE WITH USER-DEFINED This report gathers information about the process overview of User-Defined Models (UDMs) in WECC This information will help the Dynamic Model Taskforce at region and other ISO’s. ERCOT to develop its own process overview. Lessons learned from using UDMs in the WECC region and other and supporting information are backed up by ISO’s is also documented references. What are the lessons WECC has learned by using User-Defined Models (UDMs)? From my research, WECC consider UDMs as very problematic. Reference [1] the early days of system studies, most dynamic models for wind and solar interconnection “In projects were user-defined models. These models, normally proprietary and distributed as object files, presented several challenges such as difficulty in model maintenance. Therefore, WECC has led a comprehensive effort to develop generic dynamic models for wind turbine generators (WTG) and Inverter based photovoltaic (PV) systems suitable for system analysis.” Best Practices plant models in accordance with WECC “Wind/Solar power plant owners shall provide their Wind/Solar Power Plant Power Flow Modeling Guidelines, WECC Wind/Solar Power Plant Dynamic Modeling Guidelines and WECC Data Preparation Manual. The dynamic models shall be WECC-approved models.” What working group is responsible for Dynamic Models? WECC Modeling and Validation Work Group (M&VWG). What is WECC Modeling and Validation Work Group (M&VWG) process for Models (UDMs)? of the problems with User Models, WECC only allows the use of Generic Equipment “Because models”[2] see slide 23 What are other process for User-Defined Models (UDMs)? ISO’s ISO-NE models (i.e. PSS/E models) and parameters can be proposed for “Only standardized component powerflow and see slide 24 dynamics cases” [2] models are to be placed on a swift path to inclusion in the library of standardized “User‐defined [2] see slide 24 models” all models must be standard “For all Interconnection Studies commencing after January 1, 2017, library models in PSS/E or applicable applications January 1, 2017, user-models will not be [2] see slide 31 –After accepted”
WECC AND OTHER ISO’S EXPERIENCE WITH USER-DEFINED MODELS This report gathers information about the process overview of User-Defined Models (UDMs) in WECC region and other ISO’s. This information will help the Dynamic Model Taskforce at ERCOT to develop its own process overview. Lessons learned from using UDMs in the WECC region and other ISO’s is also documented and supporting information are backed up by references. What are the lessons WECC has learned by using User-Defined Models (UDMs)? From my research, WECC consider UDMs as very problematic. Reference [1] “In the early days of system studies, most dynamic models for wind and solar interconnection projects were user-defined models. These models, normally proprietary and distributed as object files, presented several challenges such as difficulty in model maintenance. Therefore, WECC has led a comprehensive effort to develop generic dynamic models for wind turbine generators (WTG) and Inverter based photovoltaic (PV) systems suitable for system analysis.” Best Practices “Wind/Solar power plant owners shall provide their plant models in accordance with WECC Wind/Solar Power Plant Power Flow Modeling Guidelines, WECC Wind/Solar Power Plant Dynamic Modeling Guidelines and WECC Data Preparation Manual. The dynamic models shall be WECC-approved models.” What working group is responsible for Dynamic Models? WECC Modeling and Validation Work Group (M&VWG). What is WECC Modeling and Validation Work Group (M&VWG) process for Models (UDMs)? “Because of the problems with User Models, WECC only allows the use of Generic Equipment models”[2] see slide 23 What are other ISO’s process for User-Defined Models (UDMs)? ISO-NE “Only standardized component models (i.e. PSS/E models) and parameters can be proposed for powerflow and dynamics cases” [2] see slide 24 “User‐defined models are to be placed on a swift path to inclusion in the library of standardized models” [2] see slide 24 “For all Interconnection Studies commencing after January 1, 2017, all models must be standard library models in PSS/E or applicable applications –After January 1, 2017, user-models will not be accepted” [2] see slide 31
WECC_EXPERIENCE_WITH_USER.DOCX