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.

10aelectricity markets10aload flow10apower system management10areliability and markets10aRM07-0031 aLesieutre, Bernard, C.1 aSchlindwein, Michael1 aBeglin, Edward, E. uhttps://certs.lbl.gov/publications/dc-optimal-power-flow-proxy-limits