无功补偿器作为提升新能源场站电压支撑的关键设备而大规模应用，然而在弱电网大扰动下新能源场站仍面临暂态同步失稳风险。因此，为明确静止无功补偿器、静止无功发生器、静止同步调相机等多元无功补偿器对新能源场站弱电网适应性的提升效果，亟需研究多元无功补偿器对新能源场站的暂态同步稳定性影响机理。首先，考虑多元无功补偿器和新能源场站同步机制与输出特性，构建多元无功补偿器接入新能源场站的暂态同步模型；其次，考虑电网短路比和无功补偿容量分析多元无功补偿器对场站等效阻尼惯量和频率突变量的影响，并通过相平面法对比分析弱电网下多元无功补偿器暂态稳定性的提升效果；最后，基于MATLAB/Simulink搭建多元无功补偿器接入新能源场站的电磁暂态仿真模型，验证了本文理论分析正确性。

Reactive power compensators (RPCs), as key devices for enhancing the voltage support capability of renewable energy plants, have been widely applied. However, renewable energy plants still face the risk of transient synchronization instability under large disturbances in weak grids. Therefore, to clarify the improvement effect of multi-type RPCs—including static var compensators (SVC), static var generators (SVG), and static synchronous condenser (SSC)—on the weak grid adaptability of renewable energy plants, it is imperative to investigate the mechanism by which multi-type RPCs influence the transient synchronization stability of renewable energy plants. First, considering the synchronization mechanisms and output characteristics of both multi-type RPCs and renewable energy plants, a transient synchronization model for renewable energy plants integrated with multi-type RPCs is established. Second, considering the grid Short-Circuit Ratio (SCR) and reactive power compensation capacity, the influence of multi-type RPCs on the equivalent damping, inertia, and frequency variation of the plant is analyzed; meanwhile, the improvement effect of multi-type RPCs on transient stability under weak grid conditions is comparatively studied via the phase plane method. Finally, an electromagnetic transient simulation model of renewable energy plants integrated with multi-type RPCs is built based on MATLAB/Simulink, which verifies the correctness of the theoretical analysis in this paper.