制动电阻在电力系统暂态稳定控制中可以发挥较大作用。文中提出基于扩展等面积法的制动电阻控制策略 ,将制动电阻控制设计转化为静态优化问题 ;然后以电力系统最大稳定域为目标函数 ,采用遗传算法进行求解。结果表明 ,所提出的控制策略易行 ,设计方法简单 ,控制效果良好 Braking resistor in the power system transient stability control can play a greater role. In this paper, a braking resistance control strategy based on extended equal area method is proposed, which transforms the design of brake resistor control into a static optimization problem. Then, the maximum stability region of the power system is taken as the objective function and the genetic algorithm is used to solve the problem. The results show that the proposed control strategy is easy, the design method is simple and the control effect is good