Provision for Guaranteed Inertial Response in Diesel-Wind Systems via Model Reference Control

Zhang, Yichen; Melin, Alexander M.; Djouadi, Seddik M.; Olama, Mohammed M.; Tomsovic, Kevin

doi:10.1109/tpwrs.2018.2827205

Cited by 47 publications

(32 citation statements)

References 27 publications

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“…For example, a two-stage, robust dynamic state estimator [36] has been integrated for estimating static and dynamic states from SCADA and PMU data. Remedial action schemes [37], such as a controlled system separation scheme [38] and guaranteed frequency response [39,40] has been implemented as a remedial action scheme for the largescale Western Electricity Coordinating Council (WECC) test system. Also, a wide-area damping control allocation algorithm [41] and frequency control frameworks [42,43] have also been implemented.…”

Section: Application Layermentioning

confidence: 99%

“…1, pp. [32][33][34][35][36][37][38][39] This is an open access article published by the IET and Tianjin University under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/) and networked physical devices with low latency. In the proposed testbed, networked physical devices modelled by distributed software programs can exchange data through the low-latency distributed messaging channels, while wide-area applications can communicate over the highly configurable emulated Internet Protocol (IP) network.…”

Section: Introductionmentioning

confidence: 99%

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Cyber‐physical system testbed for power system monitoring and wide‐area control verification

Cui

Tomsovic

2020

IET Energy Systems Integration

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The electric power system is intrinsically a cyber-physical system (CPS) with power flowing in the physical system and information flowing in the cyber-network. Testbeds are crucial for understanding the cyber-physical interactions and provide environments for prototyping novel applications. This study proposes a four-layer architecture for CPS testbeds with emphases on communication network emulation and networked physical components. A configurable software-defined network is employed to bridge physical components with wide-area applications for closed-loop control. In order to distribute physically coupled devices into multiple software simulations, this study proposes a data broker setup based on a distributed messaging environment to achieve low-latency data streaming. The decoupled design with data streaming allows for building testbed components as modules and running them in a distributed manner. Case studies verify the data broker setup for low-latency sensing and actuation, as well as the communication emulation setup for the desired network latency. Also illustrated is a replay attack scenario using synchrophasors in the Western Electricity Coordinating Council (WECC) 181-bus system for demonstrating the closed-loop cyber-physical simulation capability of the testbed.

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Section: Application Layermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Cyber‐physical system testbed for power system monitoring and wide‐area control verification

Cui

Tomsovic

2020

IET Energy Systems Integration

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“…The other type of approaches is to mimic the power-angle relation of traditional synchronous generators by means of modifying either the phase-lock loop (PLL) [26], [27] or the active power controller [28]- [30]. The angle used by the Park's transformation for synchronization is no longer obtained through the vector alignment, but calculated using the swing dynamics.…”

Section: A Literature Reviewmentioning

confidence: 99%

Set Theory-Based Safety Supervisory Control for Wind Turbines to Ensure Adequate Frequency Response

Zhang

Raoufat

Tomsovic

et al. 2019

IEEE Trans. Power Syst.

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Inadequate frequency response can arise due to a high penetration of wind turbine generators (WTGs) and requires a frequency support function to be integrated in the WTG. The appropriate design for these controllers to ensure adequate response has not been investigated thoroughly. In this paper, a safety supervisory control (SSC) is proposed to synthesize the supportive modes in WTGs to guarantee performance. The concept, region of safety (ROS), is stated for safe switching synthesis. An optimization formula is proposed to calculate the largest ROS. By assuming a polynomial structure, the problem can be solved by a sum of squares program. A feasible result will generate a polynomial, the zero sublevel set of which represents the ROS and is employed as the safety supervisor. A decentralized communication architecture is proposed for small-scale systems. Moreover, a scheduling loop is suggested so that the supervisor updates its boundary with respect to the renewable penetration level to be robust with respect to variations in system inertia. The proposed controller is first verified on a single-machine three-phase nonlinear microgrid, and then implemented on the IEEE 39-bus system. Both results indicate that the proposed framework and control configuration can guarantee adequate response without excessive conservativeness.

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“…For clear illustration, the derivations are briefly repeated in this section with necessary modifications. Definitions of well-known variables can be referred to [17] and will be omitted here due to space limitations.…”

Section: Microgrid Modeling With Dgs and Wtgsmentioning

confidence: 99%

Synthesizing Distributed Energy Resources in Microgrids with Temporal Logic Specifications

Zhang

Olama

Melin

et al. 2018

2018 9th IEEE International Symposium on Power Electronics for Distributed Generation Systems (PEDG)

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Grid supportive (GS) modes integrated within distributed energy resources (DERs) can improve the frequency response. However, synthesis of GS modes for guaranteed performance is challenging. Moreover, a tool is needed to handle sophisticated specifications from grid codes and protection relays. This paper proposes a model predictive control (MPC)-based mode synthesis methodology, which can accommodate the temporal logic specifications (TLSs). The TLSs allow richer descriptions of control specifications addressing both magnitude and time at the same time. The proposed controller will compute a series of Boolean control signals to synthesize the GS mode of DERs by solving the MPC problem under the normal condition, where the frequency response predicted by a reduced-order model satisfies the defined specifications. Once a sizable disturbance is detected, the pre-calculated signals are applied to the DERs. The proposed synthesis methodology is verified on the full nonlinear model in Simulink. A robust factor is imposed on the specifications to compensate the response mismatch between the reduce-order model and nonlinear model so that the nonlinear response satisfies the required TLS.

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Provision for Guaranteed Inertial Response in Diesel-Wind Systems via Model Reference Control

Cited by 47 publications

References 27 publications

Cyber‐physical system testbed for power system monitoring and wide‐area control verification

Cyber‐physical system testbed for power system monitoring and wide‐area control verification

Set Theory-Based Safety Supervisory Control for Wind Turbines to Ensure Adequate Frequency Response

Synthesizing Distributed Energy Resources in Microgrids with Temporal Logic Specifications

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