Control method for improving transient characteristics of STATCOM (Static Synchronous Compensator)

The invention discloses a control method for improving transient characteristics of an STATCOM (Static Synchronous Compensator). The control method comprises the steps of deducing a transient reactive response model of the STATCOM, analyzing key factors influencing the transient characteristics of the STATCOM, optimizing a traditional control strategy of the STATCOM and the like. According to the method, the reactive current reference value of the current inner loop of the STATCOM is optimized, so that the transient reactive response speed of the STATCOM at the fault moment is increased, the transient response capability of the STATCOM is improved, and the actual application of the STATCOM in a new energy high-voltage direct-current transmission delivery system is ensured. 本发明公开了一种提高STATCOM暂态特性的控制方法，包括推导STATCOM暂态无功响应模型、分析影响其暂态特性的关键因素、对STATCOM传统控制策略进行优化等步骤。本发明通过对STATCOM电流内环无功电流参考值进行优化，加快了故障瞬间STATCOM暂态无功响应速度，提升了STATCOM暂态响应能力，保证了STATCOM在新能源经高压直流输电外送系统的实际运用。