Proxy limits are used to represent voltage constraints from an AC power flow as line flow constraints in a DC power flow. When a DC power flow is used to settle markets, the use of proxy limits can introduce errors in LMPs, dispatch, or both. This paper describes a method to obtain the optimal set of proxy limits for known voltage constraints. We discuss the general properties of these proxy limits.

}, keywords = {electricity markets, load flow, power system management, reliability and markets, RM07-003}, isbn = {978-1-4244-5509-6}, doi = {10.1109/HICSS.2010.130}, author = {Bernard C. Lesieutre and Michael Schlindwein and Edward E. Beglin} }