Wide-area measurement, protection and control systems link the cyber power system with the physical power system to realize a cyber-physical power system (CPPS). This paper proposes a reliability modeling and assessment method for the wide-area protection system (WAPS). The proposed WAPS model takes into account the decision accuracy of protection algorithms with limited available data at the control center, and combines it with the tripping reliability of protection devices in corresponding substations to form the operation accuracy of WAPS. In particular, the directional comparison algorithm used in decision-making is functionally divided into three modules, namely the initiation module, the fault area positioning module, and the faulted element recognition module. The proposed reliability models are established based on the Permutation and Combination method under the assumption that the data acceptance rate of the control center is ${d}$ . The sequential Monte-Carlo simulation is used to solve the proposed reliability indices. Finally, the WAPS reliability assessment is presented for the IEEE 14-bus system and the key influencing factors are identified and discussed.

中文翻译：

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考虑信息物理系统约束的广域保护系统可靠性分析

广域测量、保护和控制系统将网络电力系统与物理电力系统连接起来，实现网络物理电力系统（CPPS）。本文提出了一种广域保护系统（WAPS）的可靠性建模和评估方法。所提出的WAPS模型考虑了控制中心可用数据有限的保护算法的决策精度，并结合相应变电站保护装置的脱扣可靠性，形成WAPS的运行精度。特别地，决策中使用的定向比较算法在功能上分为三个模块，即启动模块、故障区域定位模块和故障要素识别模块。 ${d}$ . 顺序蒙特卡洛模拟用于解决建议的可靠性指标。最后，提出了IEEE 14总线系统的WAPS可靠性评估，并确定和讨论了关键影响因素。