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The work done in this paper attempts to exploit a Stackelberg game theoretic approach for resilient control of a networked system. A switching control design has been incorporated to modify the system dynamics on occurrence of an attack to enable online recovery. A case of grid forming Voltage Source Inverters (VSI's) is considered and systematic analysis concerning effectiveness of the proposed control...
As in cutting-in control process of pitch-controlled doubly-fed wind power generation system, the synchronized control strategy of DFIG can only regulate the stator voltages before cut in, the performance of pitch control for maintaining wind turbine rotating speed is studied, in order to prevent turbine over-speed. For accomplishing the whole cutting-in process simulation, a method based on modeling...
Fast and proper synchronization of generation stations is becoming inevitable specially in micro grids. Increased number of small generation units raised total quantity of their synchronization process to the micro grids. This Paper provides improvements in synchronization between an emulated power system and its power generation stations in a laboratory scaled power grid. Three methods including...
This paper presents a hierarchical control scheme using a multi-agent system for black start operation of a microgrid with power electronic interfaces. Five types of agents are proposed in this architecture, namely Grid Agent, Central Agent, Generation Agent, Load Agent and Breaker Agent. With this architecture, the multi-agent system is able to coordinate distributed generators (DG) and loads to...
This In this paper a stochastic automation networks (SANs) model for the computing the availability of communication based train control (CBTC) system is developed, which captures the lossy radio communication link and the transmission procedures based on 802.11 protocols. A scaled generalized minimum residual (SGMRES) iterative method is provided to reduce the ill-condition of steady-state equation...
The continuity of power supply can be improved by power system islanding. A possible solution, synchronous islanded operation, enables the islanded system to remain in phase with the main power system while not electrically connected, and so avoids out-of-synchronism re-closure. Specific consideration is required for the multiple-set scenario, and is the topic of this paper. A suitable island management...
The paper studies distribution network with comprehensive micro-grid systems with an aim to design an advanced protection and control scheme. The proposed integrated protection and control (IPC) unit, interfacing to the substation measurement devices and micro-grid components through a substation optical Ethernet, is responsible for the protection of the distribution substation and control of its...
Low power design is becoming the mainstream in VLSI. However, since most of the technologies minimizing power consumption have only focused on normal mode operation, test mode operation is often posing the high power consumption because of the high switching activity during scan shift operation. On the other hand, test data volume has become big issue as the size of digital designs continues to grow...
Class D amplifiers are becoming the most feasible solution for embedded audio application. However, distortions due to the non-linear nature of switching stage are the main drawback for this amplifier topology. This paper discusses the design and implementation of high fidelity audio class D using sliding mode control scheme. This design method proves to be a cost effective solution for industrial...
A high bandwidth critical path monitor (1 sample/ cycle at 4-5 GHz) capable of providing real-time timing margin information to a variable voltage/frequency scaling control loop is described. The critical path monitor tracks the critical path delay to within 1 FO2 inverter delay with a standard deviation less than 3 FO2 delays over process, voltage, temperature, and workload. The CPM is sensitive...
MPSS simulates the behavior of a high traffic transaction processing system. An effective use of MPSS is the analysis of the impact of exclusive control of system resources over multiple processes. MPSS consists of a control process and multiple application processes. The control process is designed to simulate a transaction processing monitor. It initiates and oversees multiple application processes...
A grid connected power generation systems based on the superior controllers of an active and reactive power are useless during a grid failures like grid short-circuit or line braking. Therefore the change of operation mode from grid connection to stand alone allows for uninterruptible supply of a selected part of grid connected load. However, in the stand alone operation mode the superior controllers...
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