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同步发电机的同步转矩分量及阻尼转矩分量是影响电力系统稳定性最直接的因素,转矩面积则将这2个转矩分量有机结合起来。文中推导出转矩面积的计算方法,再利用最大转矩面积原理对静止同步补偿器(STATCOM)稳定控制器进行优化设计,解决了STATCOM稳定控制器可能会恶化系统同步转矩这一问题。所设计的稳定控制器投入运行后,可以保证同步发电机同时拥有足够大的同步转矩和阻尼转矩,使得系统的稳定水平得以提高。最后给出一个算例进行验证,EMTDC的仿真结果证实了此方法的有效性。
The synchronous torque component and damping torque component of synchronous generator are the most direct factors that affect the stability of power system. The torque area combines these two torque components organically. In this paper, the calculation method of torque area is deduced, and then the optimal design of the STATCOM stabilizer is made by the principle of the maximum torque area, which solves the problem that the STATCOM controller may deteriorate the system synchronous torque. The designed stability controller is put into operation, which can ensure that the synchronous generator has enough synchronous torque and damping torque at the same time, so that the stability of the system can be improved. Finally, an example is given for verification. The EMTDC simulation results confirm the effectiveness of this method.