Modification of MOD-010 through MOD-015

1. Modification of MOD-010 through MOD-015

2. August 10, 1996 WSCC Outage Real event Dynamic simulations Bad modeling can lead to bad decisions

3. What We Must Achieve WECC Confidence today Simulations of June 14, 2004 Frequency COI power - grid frequency - COI power Real event Simulations

4. Background • Modeling Improvements Initiative Loosely Initiated in 2006 • Basis • NERC Recommendation 14 and US-Canada Task Force Recommendation 24 • Both called for improvements in quality of system modeling data and data exchange practices • Focus of whitepaper is on MOD-010 through -015 Standards • MOD-010, -011, and -014 address steady state data and model development • MOD-012, -013-1, and -015-0.1 address dynamic data and model development • MOD-011, MOD-013, MOD-014 and MOD-015 were not approved by FERC Order No. 693

5. Key Issues with MOD-010 through -015 • Lack of clear delineation of responsibilities for providing and receiving data and models • Lack of specificity in: • certain data and model requirements • Performance requirements of models under static and dynamic conditions. • Newer Reliability Standards such as TPL-001-2 require a level of modeling not supported • How to deal with “proprietary” models • CEII and non-disclosure agreements • Models for new technology are introduced in a non-uniform manner

6. Suggested Improvements • Reduction in the number of MOD standards • For example, two standards: one for steady state and one for dynamic models • Add Short Circuit data to MOD standards • Add specific requirements to supply data and models • Identify what data is to be provided, who is responsible to provide it and, who should receive it • Define acceptability/performance requirements for both powerflow and dynamics • Require standard format for data and model exchange • How to deal with new technology • Model Validation including new technology models provisions

7. Question?