Coordination control method for multi-wind farm systems to prevent sub/super-synchronous oscillations

In recent years, the sub/super-synchronous oscillations occur frequently in large-scale wind power bases of China. Since oscillation frequencies are close to fundamental frequency, current components can spread over a large area, and may destroy shafting rotating devices grid. Improving control strategy parameters turbines prevent this problem some extent, however, due complex operation conditions continuous development power, off-line improvement measure on cannot eliminate potential risks. This paper is propose an risk screening stability assessment method, develop coordination method for farm systems oscillations. The Nyquist criterion modal analysis combined generate quantitative factors design. consists minute-level coordinated allocation second-level fast Detailed simulation model multiple farms system originated from actual base China presented verify effectiveness proposed method.