中文摘要：

随着PMU/WAMS技术的广泛应用,基于广域响应的暂态稳定紧急控制技术已成为可能。针对互联电网区间暂态失稳,分析扰动后区间联络线功率的动态特征及其与系统不平衡能量的关系,提出一种基于区间联络线能量预测的暂态稳定紧急切机方法。根据扩展等面积法则建立振荡中心所在联络线的功率-相角差相平面,映射系统暂态能量变化,并以此计算联络线的紧急调节功率。系统运行中,根据地区特征发电机的受扰响应刷新切机序位表,并利用离线计算得到的功率转移分布因子实现在线切机功率分摊计算,制定基于最小代价的紧急切机策略。所提方法无需健全广域测量,计算效率高。

英文摘要：

With the wide application of PMU / WAMS,the transient stability emergency control technology based on wide-area response has become possible. Aiming at the inter-area transient instability between regional power grids,the dynamic characteristics of inter-area tie-line power and its relationship with the unbalanced system energy are analyzed,and a method of transient stability emergency generator tripping based on the inter-area tie-line energy prediction is proposed. According to the extended equal area criterion,the tie-line phase plane of power and angle difference in the oscillation centre is established to reflect the variation of system transient energy and calculate the emergency adjusting power of tie-line.During the system operation,the generator tripping sequence table is updated according to the response of generator to disturbance,the power allocation of on-line generator tripping is calculated based on the generalized generation distribution factors obtained by off-line calculation,and the emergency generator tripping scheme with the minimum cost is set. The proposed method does not depend on the complete wide-area measurements and has high computation efficiency.