Open AccessSub‐synchronous resonance mitigation by a STATCOM in doubly fed induction generator‐based wind farm connected to a series‐compensated transmission network
Author(s) -
Gao Benfeng,
Hu Yunting
Publication year - 2019
Publication title -
the journal of engineering
Language(s) - English
Resource type - Journals
ISSN - 2051-3305
DOI - 10.1049/joe.2018.8393
Subject(s) - transient (computer programming) , control theory (sociology) , controller (irrigation) , induction generator , electric power system , compensation (psychology) , transmission (telecommunications) , series (stratigraphy) , wind power , doubly fed electric machine , transmission system , electric power transmission , permanent magnet synchronous generator , generator (circuit theory) , ac power , computer science , power (physics) , engineering , electrical engineering , voltage , control (management) , telecommunications , physics , artificial intelligence , psychoanalysis , biology , operating system , psychology , paleontology , quantum mechanics , agronomy
With the fast development of wind power generation, large‐scale wind farms are connected to an electrical network which is series compensated to increase transmission capacity. However, a series‐compensated power system may encounter with a sub‐synchronous resonance (SSR) problem. Flexible AC transmission systems controllers are widely applied to mitigate SSR and improve the transient stability of the power system. A static synchronous compensator (STATCOM) with an SSR damping controller is proposed to mitigate the potential of SSR in a series‐compensated doubly fed induction generator‐based wind farm. The local signal is used as the input of the damping controller, which is feasible to be implemented in a practical project. Taking account of different series compensation levels and operating conditions, extensive transient simulations have been carried out using power systems computer aided design/electromagnetic transients including DC (PSCAD/EMTDC) to demonstrate the capability of STATCOM in damping SSR. It is shown that the SSR is successfully alleviated by STATCOM, which also verifies the effectiveness of the proposed STATCOM controller in improving the stability of the transmission system.