Aranya Chakrabortty

article

Smart Grid Simulations and Their Supporting Implementation Methods

Aranya Chakrabortty, Anjan Bose

Proceedings of the IEEE > 2017 > 105 > 11 > 2220 - 2243

In this tutorial we present the state-of-the-art as well as new methods for simulating various planning, operation, stability, reliability, and economic models of electric power systems. The discussion is driven by both first-principle models and empirical models. First-principle models result from the fundamental physics and engineering principles that govern the behavior of various components of...

chapter

Infusing autonomy in power distribution networks using smart transformers

Aranya Chakrabortty

2017 IEEE Conference on Control Technology and Applications (CCTA) > 1110 - 1116

2017 IEEE Conference on Control Technology and Applications (CCTA)

In this tutorial we describe a list of analytical methods from optimization, control theory, and machine learning that can be used for infusing autonomy in large-scale interconnected networks of microgrids with as little human intervention in their control loops as possible. The cornerstone medium for promoting this autonomy is smart transformers made out of solid-state technology, which serve the...

article

Identification and Predictive Analysis of a Multi-Area WECC Power System Model Using Synchrophasors

Govind Chavan, Matthew Weiss, Aranya Chakrabortty, Subhashish Bhattacharya, more

IEEE Transactions on Smart Grid > 2017 > 8 > 4 > 1977 - 1986

This paper describes the construction of a reduced-order five-machine dynamic equivalent electro-mechanical model of the Western Electricity Coordinating Council (WECC) 500 kV power system network using slow mode oscillations of power flows derived from phasor measurement unit data. We first extract the slow oscillations using modal decomposition, and use them to estimate four key parameters of the...

chapter

An online structurally constrained LQR design for damping oscillations in power system networks

Abhishek Jain, Aranya Chakrabortty, Emrah Biyik

2017 American Control Conference (ACC) > 2093 - 2098

2017 American Control Conference (ACC)

This paper presents an online distributed control design for suppressing inter-area oscillations in large power systems under structural constraints posed on the underlying communication network. The presence of multiple clusters of generators in a power system results in several inter-area oscillation modes. By modal analysis, we first show that the contribution of each inter-area mode on the electromechanical...

chapter

LQG control of large networks: A clustering-based approach

Nan Xue, Aranya Chakrabortty

2017 American Control Conference (ACC) > 2333 - 2338

2017 American Control Conference (ACC)

In this paper we present a Linear Quadratic Gaussian (LQG) control design for large-dimensional network dynamic systems using the idea of network clustering. When networks have tens of thousands of nodes spread over a wide geographical span, the design of conventional output feedback controllers becomes numerically challenging, and their implementation requires a large number of communication links...

chapter

A retrofitting-based supplementary controller design for enhancing damping performance of wind power systems

Tomonori Sadamoto, Aranya Chakrabortty, Takayuki Ishizaki, Jun-ichi Imura

2017 American Control Conference (ACC) > 2755 - 2760

2017 American Control Conference (ACC)

In this paper we address the growing concerns of wind power integration from the perspective of power system dynamics and stability. We propose a new retrofit control technique where an additional controller is designed at the doubly-fed induction generator site inside the wind power plant. This controller cancels the adverse impacts of the power flow from the wind side to the grid side on the dynamics...

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Identifying data-manipulators in power system mode estimation loops with noisy measurements

Mang Liao, Aranya Chakrabortty

2017 American Control Conference (ACC) > 2773 - 2778

2017 American Control Conference (ACC)

We develop an algorithm that can detect the identity of false data-injection attackers in distributed optimization loops for estimating oscillation modes in power system models when the measurements used for the estimation are noisy. The fundamental set-up for the optimization is based on a distributed version of total least-squares (TLS) executed via Alternating Direction Multiplier Method (ADMM)...

chapter

Distributed cyber-physical algorithms for wide-area control of power systems

Aranya Chakrabortty

2017 51st Annual Conference on Information Sciences and Systems (CISS) > 1

2017 51st Annual Conference on Information Sciences and Systems (CISS)

With the number of Phasor Measurement Units (PMUs) in the North American power grid scaling up into the thousands, system operators are gradually inclining towards distributed cyber-physical architectures for executing wide-area monitoring and control operations using Synchrophasors. Traditional centralized approaches, in fact, are anticipated to become untenable soon due to various factors such as...

article

A delay-aware cyber-physical architecture for wide-area control of power systems

Damoon Soudbakhsh, Aranya Chakrabortty, Anuradha M. Annaswamy

Control Engineering Practice > 2017 > 60 > C > 171-182

In this paper we address the problem of wide-area control of power systems using Synchrophasor measurements in the presence of network delays. We propose a novel cyber-physical architecture that uses an arbitrated network control systems approach for mitigating the destabilizing effects of delays in power systems. The approach consists of: (1) utilization of Synchrophasor measurements from distributed...

article

Game-Theoretic Multi-Agent Control and Network Cost Allocation Under Communication Constraints

Feier Lian, Aranya Chakrabortty, Alexandra Duel-Hallen

IEEE Journal on Selected Areas in Communications > 2017 > 35 > 2 > 330 - 340

Multi-agent networked linear dynamic systems have attracted the attention of researchers in power systems, intelligent transportation, and industrial automation. The agents might cooperatively optimize a global performance objective, resulting in social optimization, or try to satisfy their own selfish objectives using a noncooperative differential game. However, in these solutions, large volumes...

article

Structured Identification of Reduced-Order Models of Power Systems in a Differential-Algebraic Form

Seyedbehzad Nabavi, Aranya Chakrabortty

IEEE Transactions on Power Systems > 2017 > 32 > 1 > 198 - 207

In a recent paper, we proposed a system identification method for constructing reduced-order models for the electro-mechanical dynamics of large power systems, divided into multiple coherent clusters, using Synchrophasors. Every cluster in the actual model was represented as an aggregate generator in the reduced-order model. An aggregate network graph connected one aggregate generator to another....

chapter

ℋ₂-clustering of closed-loop consensus networks under generalized LQR designs

Nan Xue, Aranya Chakrabortty

2016 IEEE 55th Conference on Decision and Control (CDC) > 5116 - 5121

2016 IEEE 55th Conference on Decision and Control (CDC)

In this paper we present a Linear Quadratic Regulator (LQR) control design for large-scale consensus networks. When such networks have tens of thousands of nodes spread over a wide geographical span, the design and implementation of conventional LQR controllers become very challenging. Consider an n-node consensus network with both node and edge weights. Given any positive integer r, our objective...

chapter

Identifying covert data-manipulators in power system estimation loops

Mang Liao, Aranya Chakrabortty

2016 IEEE 55th Conference on Decision and Control (CDC) > 1273 - 1278

2016 IEEE 55th Conference on Decision and Control (CDC)

We develop a set of algorithms for identifying covert data manipulators in distributed optimization loops for estimating oscillation modes in power systems. The fundamental set-up for the optimization is based on Alternating Direction Multiplier Method (ADMM), implemented via message passing between a set of local estimators and a central coordinator. Some of these local estimators are assumed to...

chapter

Wide-area control of power systems using cloud-in-the-loop feedback

Matthew Weiss, Jianhua Zhang, Aranya Chakrabortty

2016 IEEE Global Conference on Signal and Information Processing (GlobalSIP) > 831 - 835

2016 IEEE Global Conference on Signal and Information Processing (GlobalSIP)

We propose the use of cloud-computing platforms and virtual network laboratories such as GENI (Global Environment for Network Innovations), together with high-speed software defined networks such as Internet2 to combat various cyber-physical implementation challenges for wide-area control of large power systems using Synchrophasors. Experimental results from a cloud-in-the-loop testbed environment...

article

Parallel Identification of Power System Dynamic Models Under Scheduling Constraints

Nan Xue, Aranya Chakrabortty

IEEE Transactions on Power Systems > 2016 > 31 > 6 > 4584 - 4594

In this paper we present two sets of parallel algorithms for identifying real-time, small-signal dynamic models of power systems using multiple sources of Synchrophasor data. The first problem is posed in terms of identifying the transfer matrix of single-input multiple-output (SIMO) power system models using linear least-squares (LLS), where parallelism can be implemented through parallel execution...

article

Time-Scale Modeling of Wind-Integrated<?Pub _newline ?> Power Systems

Souvik Chandra, Dennice F. Gayme, Aranya Chakrabortty

IEEE Transactions on Power Systems > 2016 > 31 > 6 > 4712 - 4721

This paper describes time-scale separation properties of dynamic models of wind-integrated power systems. We first derive a mathematical model for the dynamics of a power network consisting of synchronous generators, loads and a wind power plant modeled by a wind turbine and a controlled doubly-fed induction generator. We then aggregate this system into multiple coherent areas, and apply a linear...

chapter

Comprehensive dynamic modeling of a solid-state transformer based power distribution system

Md Tanvir Arafat Khan, Alireza Afiat Milani, Aranya Chakrabortty, Iqbal Husain

2016 IEEE Energy Conversion Congress and Exposition (ECCE) > 1 - 8

2016 IEEE Energy Conversion Congress and Exposition (ECCE)

This paper presents a physics based comprehensive dynamic model of a future power distribution system, termed as the FREEDM system, for plug-and-play interface of distributed renewable energy resources and distributed energy storage devices. The system allows for high penetration of renewable generation with energy storage at the distribution level. FREEDM system consists of an energy router, which...

chapter

Distributed monitoring of wide-area oscillations in the presence of GPS spoofing attacks

Yongqiang Wang, Aranya Chakrabortty

2016 IEEE Power and Energy Society General Meeting (PESGM) > 1 - 5

2016 IEEE Power and Energy Society General Meeting (PESGM)

Phasor Measurement Units (PMU) are playing an increasingly important role in wide-area monitoring and control of power systems. PMUs allow synchronous real-time measurements of voltage, phase angle and frequency from multiple remote locations in the grid, enabled by their ability to align to Global Position System (GPS) clocks. Given that this ability is vulnerable to GPS spoofing attacks, which have...

chapter

A resilient software infrastructure for Wide-Area Measurement Systems

Tao Qian, Hang Xu, Jianhua Zhang, Aranya Chakrabortty, more

2016 IEEE Power and Energy Society General Meeting (PESGM) > 1 - 5

2016 IEEE Power and Energy Society General Meeting (PESGM)

To support the scalability and resilience requirements of distributed Wide-Area Measurement System (WAMS) architectures, we design and implement a software infrastructure to estimate power grid oscillation modes based on real-time data collected from Phasor Measurement Units (PMUs). This estimation algorithm can be deployed on a hierarchical structure of Phasor Data Concentrators (PDCs), which calculate...

chapter

Mitigating Denial-of-Service attacks in wide-area LQR control

Nachiappan Chockalingam, Aranya Chakrabortty, Alefiya Hussain

2016 IEEE Power and Energy Society General Meeting (PESGM) > 1 - 5

2016 IEEE Power and Energy Society General Meeting (PESGM)

In this work we study the impacts of Denial-of-Service (DoS) attacks on the cyber-physical implementation of wide-area control. The controller is desgined as a Linear Quadratic Regulator (LQR) for damping power flow oscillations. We first derive a nominal mathematical model of the power system network considering a delay-aware LQR controller without any DoS. Thereafter, we model how DoS enters the...

INFONA - science communication portal

Search results for: Aranya Chakrabortty

Smart Grid Simulations and Their Supporting Implementation Methods

Infusing autonomy in power distribution networks using smart transformers

Identification and Predictive Analysis of a Multi-Area WECC Power System Model Using Synchrophasors

An online structurally constrained LQR design for damping oscillations in power system networks

LQG control of large networks: A clustering-based approach

A retrofitting-based supplementary controller design for enhancing damping performance of wind power systems

Identifying data-manipulators in power system mode estimation loops with noisy measurements

Distributed cyber-physical algorithms for wide-area control of power systems

A delay-aware cyber-physical architecture for wide-area control of power systems

Game-Theoretic Multi-Agent Control and Network Cost Allocation Under Communication Constraints

Structured Identification of Reduced-Order Models of Power Systems in a Differential-Algebraic Form

ℋ₂-clustering of closed-loop consensus networks under generalized LQR designs

Identifying covert data-manipulators in power system estimation loops

Wide-area control of power systems using cloud-in-the-loop feedback

Parallel Identification of Power System Dynamic Models Under Scheduling Constraints

Time-Scale Modeling of Wind-Integrated<?Pub _newline ?> Power Systems

Comprehensive dynamic modeling of a solid-state transformer based power distribution system

Distributed monitoring of wide-area oscillations in the presence of GPS spoofing attacks

A resilient software infrastructure for Wide-Area Measurement Systems

Mitigating Denial-of-Service attacks in wide-area LQR control

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