An Automated Transient Stability Constrained Optimal Power Flow Based On Trajectory Sensitivity Analysis

Keywords

Linear programming; time-domain simulation; trajectory approximation; trajectory sensitivity; transient stability; transient stability constrained OPF

Abstract

This paper presents an automated transient stability constrained optimal power flow (ATSC-OPF). ATSC-OPF automates the design of linear transient stability constraints without online human interference thus is adaptive to the change of real-time operating conditions and suitable for applications in industrial dispatch programs. The design of transient stability constraints uses trajectory sensitivities to separate the integration of time-domain simulation from the online computing of optimal power flow. For identified unstable cases, a generic iterative algorithm is proposed to search corresponding stable base cases required to calculate trajectory sensitivities. ATSC-OPF identifies and limits only the key generators at critical time to minimize the extra computational burden brought by the transient stability constraints. The designed transient stability constraints are incorporated into ATSC-OPF only when needed in operation. The limits in the transient stability constraints are determined with manageable stability margin to avoid unnecessary increase of operational cost. The performance of ATSC-OPF is studied with the New England 39-bus system for a single-contingency situation and a 140-bus simplified NPCC system for a multicontingency situation.

Publication Date

1-1-2017

Publication Title

IEEE Transactions on Power Systems

Volume

32

Issue

1

Number of Pages

590-599

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1109/TPWRS.2016.2551278

Socpus ID

85008481842 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/85008481842

This document is currently not available here.

Share

COinS