{"id":1445,"date":"2025-04-14T12:11:20","date_gmt":"2025-04-14T16:11:20","guid":{"rendered":"http:\/\/localhost:10003\/dsa-tools-module\/opf-ra-remedial-actions-based-on-optimal-power-flow\/"},"modified":"2025-08-24T14:43:08","modified_gmt":"2025-08-24T18:43:08","slug":"opf-ra-remedial-actions-based-on-optimal-power-flow","status":"publish","type":"dsa-tools-module","link":"https:\/\/powertechlabs.com\/dsa-tools-module\/opf-ra-remedial-actions-based-on-optimal-power-flow\/","title":{"rendered":"Remedial Actions based on Optimal Power Flow"},"content":{"rendered":"\n\n\t\t\t\t<img decoding=\"async\" src=\"https:\/\/powertechlabs.com\/wp-content\/uploads\/2025\/04\/VSAT-OPF-RA-1.png\" alt=\"VSAT-OPF-RA\" itemprop=\"image\" title=\"VSAT-OPF-RA\" onerror=\"this.style.display='none'\" loading=\"lazy\" \/>\n\t<h3>Remedial Action Determination Using Optimal Power Flow<\/h3>\n<p>OPF-RA is an add-on module for VSAT. It can help identify measures to alleviate thermal and voltage stability violations of a power system under pre- and post-contingency conditions.<\/p>\n<p>OPF-RA is integrated with VSAT, providing a user-friendly interface and seamless interaction with VSAT models and data, as well as the relevant VSAT analysis options. The resulting powerflow case with the RA implemented can be directly opened by other DSATools\u2122 modules for further studies.<\/p>\n\t\t\t\t<img decoding=\"async\" src=\"https:\/\/powertechlabs.com\/wp-content\/uploads\/2025\/04\/powertech-opf-ra-featured-image.jpg\" alt=\"Screenshot\" itemprop=\"image\" title=\"Screenshot\" onerror=\"this.style.display='none'\" loading=\"lazy\" \/>\n\t\t\t\tApproach\n\t\t\t\t<p>Whereas conventional remedial action studies for resolving thermal and voltage insecurity issues rely on significant human effort by systematically adjusting system control settings to reach a satisfactory solution, OPF-RA formulates and solves an optimal powerflow (OPF) problem, which automatically determines the appropriate remedial actions enough to bring the system back to security, based on a set of user-defined controls and system operational criteria.<\/p>\n<p><strong>OPF-RA is based on the following techniques: <\/strong><\/p>\n<ul>\n<li>Full AC OPF formulation<\/li>\n<li>Robust primal-dual interior-point solution algorithm<\/li>\n<\/ul>\n<p><strong>Control measures incorporated into OPF-RA: <\/strong><\/p>\n<ul>\n<li>Generator voltage settings<\/li>\n<li>SVC\/shunt voltage settings<\/li>\n<li>Switchable shunts<\/li>\n<li>Transformer taps<\/li>\n<li>Generator active power dispatches<\/li>\n<li>Load shedding<\/li>\n<\/ul>\n<p><strong>Types of constraints enforceable in OPF-RA:<\/strong> <\/p>\n<ul>\n<li>Bus voltage limits<\/li>\n<li>Branch thermal limits (MVA, Ampere, MW, MVAr)<\/li>\n<li>Interface flow limits (MVA and MVAr)<\/li>\n<li>Generator MW and MVAr limits<\/li>\n<li>Switchable, continuous\/discrete shunt limits<\/li>\n<li>Transformer tap limits<\/li>\n<li>Load shedding limits<\/li>\n<li>All contingencies supported by VSAT<\/li>\n<\/ul>\n\t\t\t\tProduct Features\n\t\t\t\t<ul>\n<li> Fully integrated with VSAT in terms of UI, input data compatibility, and computation engine<\/li>\n<li>Identification of remedial actions to resolve thermal and voltage stability violations<\/li>\n<li>Complementary to the existing sensitivity-base RA method in VSAT<\/li>\n<li>Capable of handling systems of very large size (up to 100,000 buses)<\/li>\n<li>Robust and highly efficient solver<\/li>\n<li>Customizable optimization and solution parameters<\/li>\n<\/ul>\n\t\t\t\tApplications\n\t\t\t\t<p>OPF-RA&#8217;s fast and efficient solution algorithm allows system planners and operators to solve various power systems problems, such as:<\/p>\n<ul>\n<li>Relieve base-case and post-contingency thermal and voltage stability violations<\/li>\n<li>Maximize system power transfer capability<\/li>\n<li>Improve system voltage profile<\/li>\n<\/ul>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/powertechlabs.com\/wp-content\/uploads\/2025\/04\/powertech-opf-ra-control-selection-dialog-300x195.jpg\" alt=\"\" width=\"392\" height=\"255\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/powertechlabs.com\/wp-content\/uploads\/2025\/04\/powertech-opf-ra-solution-result-display-window-300x213.jpg\" alt=\"\" width=\"392\" height=\"278\" \/><\/p>\n\t\t\t\tSpecifications and Requirements\n\t\t\t\t<ul>\n<li>Runs on MS Windows 7\/10\/server 2012 R2\/server 2016 <\/li>\n<li>Requires VSAT to run<\/li>\n<\/ul>\n\n","protected":false},"featured_media":1646,"template":"","application-type":[16],"audience":[22,19],"compliance-standard":[],"module-type":[24],"class_list":["post-1445","dsa-tools-module","type-dsa-tools-module","status-publish","has-post-thumbnail","hentry","application-type-offline","audience-for-operators","audience-for-system-planners","module-type-add-on"],"acf":[],"_links":{"self":[{"href":"https:\/\/powertechlabs.com\/wp-json\/wp\/v2\/dsa-tools-module\/1445","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/powertechlabs.com\/wp-json\/wp\/v2\/dsa-tools-module"}],"about":[{"href":"https:\/\/powertechlabs.com\/wp-json\/wp\/v2\/types\/dsa-tools-module"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/powertechlabs.com\/wp-json\/wp\/v2\/media\/1646"}],"wp:attachment":[{"href":"https:\/\/powertechlabs.com\/wp-json\/wp\/v2\/media?parent=1445"}],"wp:term":[{"taxonomy":"application-type","embeddable":true,"href":"https:\/\/powertechlabs.com\/wp-json\/wp\/v2\/application-type?post=1445"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/powertechlabs.com\/wp-json\/wp\/v2\/audience?post=1445"},{"taxonomy":"compliance-standard","embeddable":true,"href":"https:\/\/powertechlabs.com\/wp-json\/wp\/v2\/compliance-standard?post=1445"},{"taxonomy":"module-type","embeddable":true,"href":"https:\/\/powertechlabs.com\/wp-json\/wp\/v2\/module-type?post=1445"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}