Phasor-Measurement-Based State Estimation for Synchrophasor Data Quality Improvement and Power Transfer Interface Monitoring

Ghiocel, Scott G.; Chow, Joe H.; Stefopoulos, George; Fardanesh, B.; Maragal, Deepak; Blanchard, Brent; Razanousky, Michael; Bertagnolli, David B.

doi:10.1109/tpwrs.2013.2284098

Cited by 77 publications

(43 citation statements)

References 16 publications

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“…Future work will focus on measurement redundancy analysis, the inclusion of smoothing reactors in the classic HVDC link model, and the development of a VSC-HVDC link model including DC link capacitor dynamics. Both classic and VSC-HVDC links will be included in the Phasor State Estimator (PSE) approach [5], [9] and contrasted with the algorithm presented in this paper.…”

Section: Discussionmentioning

confidence: 99%

“…Similarly to [5], [9], the AC network model is comprised of a line with series admittance and shunt admittance, as well as transformers. All these components are enough to formulate the AC network model, which describes the relation between complex voltages on buses and complex currents flowing through the lines connected to these buses.…”

Section: Hybrid Ac/dc Network Model a Ac Networkmentioning

confidence: 99%

“…Although conventional SEs including classic HVDC links have been developed [7][8], the use of conventional measurements makes these SEs complex. In contrast, PMU-only SEs [5], [9], [10] use Kirchhoff's laws with voltage and current phasors, which significantly reduce the nonlinearities in the model compared to the power flow network equations, as well as reducing the computation burden of the numerical solution algorithms. On the other hand, both of them may apply a similar optimization algorithm to obtain an SE solution, namely the weighted least squares method.…”

Section: Introductionmentioning

confidence: 99%

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Inclusion of classic HVDC links in a PMU-based state estimator

Vanfretti

2014

2014 IEEE PES General Meeting | Conference &Amp; Exposition

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Abstract-This article presents a PMU-based state estimator algorithm that considers the presence of classic HVDC links. A hybrid AC/DC network model is developed to combine the AC network and DC links. The algorithm assumes that DC link measurements can be sampled synchronously, are time-stamped and reported at the same rate as PMU measurements. Then, by applying the weighted least squares algorithm, a linear state estimator can solve for both AC and DC states simultaneously. To validate the algorithm, a state estimation model is built for a 9-bus and the KTH-Nordic 32 systems, for both AC-only and hybrid AC/DC networks. In addition, the influence of losing DC measurements and effects of measurement noise on the state estimator are briefly discussed.

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Section: Discussionmentioning

confidence: 99%

Section: Hybrid Ac/dc Network Model a Ac Networkmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Inclusion of classic HVDC links in a PMU-based state estimator

Vanfretti

2014

2014 IEEE PES General Meeting | Conference &Amp; Exposition

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“…It removes much of the effort and risk of error associated with collating other forms of data such as triggered fault records (which may be accurately timestamped but have different start/end times). Two main model validation approaches are raised in the literature [24][25][26][27]: system-wide and subsystem.…”

Section: Dynamic Model Validationmentioning

confidence: 99%

Deployment and demonstration of wide area monitoring system in power system of Great Britain

Wall

Dattaray

Jin

et al. 2016

J. Mod. Power Syst. Clean Energy

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The creation of a suitable wide area monitoring system (WAMS) is widely recognized as an essential aspect of delivering a power system that will be secure, efficient and sustainable for the foreseeable future. In Great Britain (GB), the deployment of the first WAMS to monitor the entire power system in real time was the responsibility of the visualization of real time system dynamics using enhanced monitoring (VISOR) project. The core scope of the VISOR project is to deploy this WAMS and demonstrate how WAMS applications can in the near term provide system operators and planners with clear, actionable information. This paper presents the wider scope of the VISOR project and the GB wide WAMS that has been deployed. Furthermore, the paper describes some of the WAMS applications that have been deployed and provides examples of the measurement device performance issues that have been encountered during the project.

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“…However, communication of data from remote PMUs can introduce data loss, corruption, and latency. Data loss and corruption can be partially mitigated using data reconstruction methods or state estimation techniques [1]. On the other hand, latency is inherent in remote signals and is increased by such data processing algorithms.…”

Section: Introductionmentioning

confidence: 99%

Stability of an adaptive switched controller for power system oscillation damping using remote synchrophasor signals

Safaei

Ghiocel

Hespanha

et al. 2014

53rd IEEE Conference on Decision and Control

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Abstract-This paper is concerned with the stability of an adaptive switched controller for interarea power system oscillation damping using remote signals. These signals introduce variable latency into the damping control system due to phasor processing and communication network delays. In previous work, we designed an adaptive controller that dynamically switches among different compensators depending on the latency of the incoming measurements. To prevent switching instability, a long reset time was implemented. We demonstrated the stability of the adaptive system using simulations. In this work, we use the concept of average dwell time (ADT) of switched control systems to develop a sufficient condition that guarantees the stability of our adaptive switching algorithm. Using this condition, we formulate a feasibility problem to compute the minimum average dwell time for the set of designed compensators. We apply the algorithm to a thyristor-controlled series compensator on a two-area power system and show that the adaptive controller is stable for time-varying latency.

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Phasor-Measurement-Based State Estimation for Synchrophasor Data Quality Improvement and Power Transfer Interface Monitoring

Cited by 77 publications

References 16 publications

Inclusion of classic HVDC links in a PMU-based state estimator

Inclusion of classic HVDC links in a PMU-based state estimator

Deployment and demonstration of wide area monitoring system in power system of Great Britain

Stability of an adaptive switched controller for power system oscillation damping using remote synchrophasor signals

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