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Wide-area measurement-based fault tolerant control of power system during sensor failure

机译：传感器故障期间基于广域测量的电力系统容错控制

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Wide-area measurement systems (WAMS) have been used in power systems for centralized control purposes. One of the most important factors in the wide-area monitoring and control of power systems is availability of sensor measurements. Sensor failure can be called either a communication lost between sensor and controller or failure of a sensor itself. This paper, addresses fault tolerant control (FTC) of power systems subject to sensor failure. Hiding the fault from the controller allows the nominal controller to remain in the loop. We assume specific faults that violate observability of a subsystem, and cannot rely on these faulty subsystems when estimating states. We use a new method for reconfiguration control of these faults that lead to unobservability of subsystems. The method proposes augmenting a faulty subsystems with another subsystem(s) until a new subsystem is achieved that is observable. Next, finding the best subsystems among available candidates is considered and using structural analysis methods and grammian definition, a complete algorithm is proposed for robust control of power systems. IEEE 14-bus test case is selected as a benchmark in transient analysis to show effectiveness of the proposed method. Simulation results show that the introduced approach works as intended. (C) 2016 Elsevier B.V. All rights reserved.
机译：广域测量系统（WAMS）已在电力系统中用于集中控制目的。在电力系统的广域监视和控制中，最重要的因素之一是传感器测量的可用性。传感器故障可以称为传感器与控制器之间的通信丢失或传感器本身的故障。本文探讨了受传感器故障影响的电力系统的容错控制（FTC）。隐藏来自控制器的故障可使标称控制器保留在回路中。我们假设特定的故障违反了子系统的可观察性，并且在估计状态时不能依赖这些故障子系统。我们使用一种新方法对这些故障进行重新配置控制，这些故障导致子系统无法观察。该方法提出用另一个子系统来扩充故障子系统，直到实现可观察到的新子系统为止。接下来，考虑在可用候选对象中找到最佳子系统，并使用结构分析方法和葛兰姆式定义，提出了一种用于电力系统鲁棒控制的完整算法。选择IEEE 14总线测试用例作为瞬态分析的基准，以显示该方法的有效性。仿真结果表明，所引入的方法可以达到预期的效果。 （C）2016 Elsevier B.V.保留所有权利。

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