Control of a Battery Energy Storage and STATCOM for Black Start Services: A Study on Power System Restoration in PSCAD
Translated title
Control of a Battery Energy Storage and STATCOM for Black Start Services
Authors
Walti, Marc ; Klaus Schwarzkopf, Julian
Term
4. term
Education
Publication year
2024
Submitted on
2024-05-30
Abstract
As conventional power plants are retired to meet climate targets, new black start providers are needed to restart the grid after a total outage. A black start means bringing parts of the grid back online without external power. This thesis tests a STATCOM with an integrated battery (STATCOM-BESS) using grid-forming control (it can set its own voltage and frequency). The goal is to create a temporary power island by energizing sections of the transmission system (an overhead line and transformers) and a distribution system that includes a grid-following unit (which needs an existing grid to synchronize to) and both static and dynamic loads. Electromagnetic transient (EMT) simulations in the PSCAD software show that the proposed control can deliver fast power, provide an inertial frequency response that damps frequency swings during sudden load changes, and interact stably with the grid-following unit. The approach meets the black start requirements set by the Belgian and British transmission system operators (TSOs).
Når konventionelle kraftværker udfases for at nå klimamål, bliver nye black start-løsninger afgørende for at genstarte elnettet efter et totalt udfald. En black start betyder, at man kan bringe dele af nettet i drift uden ekstern forsyning. Dette speciale afprøver en STATCOM med integreret batterilager (STATCOM-BESS) med grid-forming styring (den kan selv sætte spænding og frekvens). Målet er at skabe en midlertidig ødrift ved at spændingssætte dele af transmissionsnettet (en luftledning og transformere) og et distributionsnet, der rummer en grid-following enhed (som kræver et eksisterende net at synkronisere til) samt både statiske og dynamiske belastninger. Elektromagnetiske transient (EMT) simulationer i PSCAD viser, at den udviklede styring kan levere hurtig effekt, give en inertiel frekvensrespons, der dæmper frekvensudsving ved pludselige belastningsændringer, og interagere stabilt med grid-following enheden. Løsningen opfylder black start-kravene fra de belgiske og britiske transmissionssystemoperatører (TSO'er).
[This apstract has been rewritten with the help of AI based on the project's original abstract]
Keywords