A5102990529- Power System Optimization and Stability
- Power Systems Fault Detection
- Optimal Power Flow Distribution
- Smart Grid Security and Resilience
- Islanding Detection in Power Systems
- Smart Grid Energy Management
- Power Line Communications and Noise
- Caching and Content Delivery
- High-Voltage Power Transmission Systems
- HVDC Systems and Fault Protection
- Control Systems and Identification
- Advanced Data Storage Technologies
- Real-time simulation and control systems
- Microgrid Control and Optimization
- Computational Physics and Python Applications
- Water Systems and Optimization
- Probabilistic and Robust Engineering Design
- High voltage insulation and dielectric phenomena
- Peer-to-Peer Network Technologies
École Polytechnique Fédérale de Lausanne
2014-2018
We intend to prove that phasor-measurement-unit (PMU)-based state estimation processes for active distribution networks exhibit unique time determinism and a refresh rate makes them suitable satisfy the time-critical requirements of protections as well accuracy dictated by faulted line identification. In this respect, we propose real-time fault detection identification functionality obtained computing parallel synchrophasor-based estimators. Each estimator is characterized different...
We describe the real-time monitoring infrastructure of smart-grid pilot on EPFL campus. experimentally validate concept a state-estimation for 20 kV active distribution network. designed and put into operation whole composed by following main elements: (1) dedicated PMUs connected medium-voltage side network secondary substations means specific current/voltage transducers; (2) communication engineered to support stringent time limits (3) an innovative state estimation process that...
This paper aims to assess the performance of linear state estimation (SE) processes power systems relying on synchrophasor measurements. The assessment is conducted with respect two different families SE algorithms, i.e., static ones represented by weighted least squares (WLS) and recursive Kalman filter (KF). To this end, firstly recalls analytical formulation WLS estimator (LWLS-SE) Discrete KF (DKF-SE). We formally quantify differences in algorithms. validation result, together...
In this paper, we present a new method for the estimation of prediction-error covariances Kalman filter (KF), which is suitable step-varying processes. The uses series past innovations (i.e., difference between upcoming measurement set and KF predicted state) to estimate covariance matrix by means constrained convex optimization problem. latter designed ensure symmetry positive semidefiniteness estimated matrix, so that numerical stability guaranteed. Our proposed straightforward implement...
The paper proposes a specific algorithm for the pre-estimation filtering of bad data (BD) in PMU-based power systems linear State Estimators (SEs). approach is framed context so-called real-time SEs that take advantage high measurement frame rate made available by PMUs (i.e., 50-60 frames per second). In particular, proposed examines PMU innovations each new received set order to locate anomalies and apply countermeasures. detection identification scheme based on: (i) forecasted state...
In recent years, the Phasor Measurement Unit (PMU) technology is rapidly evolving towards potential deployment also in power distribution systems (DSs). general, this specific field of applications requires PMUs whose accuracy levels are beyond those required by IEEE Std. C37.118. Additionally, there need to define architecture an associated calibration system capable assess metrological performances these devices. paper, we first analyse impact uncertainties (in term phase and magnitude)...
The paper describes the development of a Hardware-in-the-Loop (HIL) test platform for performance assessment PMU-based sub-second linear Real-Time State Estimator (RTSE) Active Distribution Networks (ADNs). estimator relies on availability data coming from Phasor Measurement Units (PMUs) and can be applied to both balanced unbalanced ADNs. first illustrates architecture experimental HIL setup that has been fully designed by Authors. It consists Simulator (RTS) models electrical network model...
Limited scalability, reliability, and security of todays utility communication infrastructures are main obstacles to the deployment smart grid applications. The C-DAX project aims at providing investigating a middleware for grids address these problems, applying information-centric networking publish/subscribe paradigm. We briefly describe architecture, extend it with flexible resilience concept, based on resilient data forwarding redundancy. Different levels support defined, their...
We intend to prove that phasor-measurement-unit (PMU)-based state estimation processes for active distribution networks exhibit unique time determinism and a refresh rate makes them suitable satisfy the time-critical requirements of protections as well accuracy dictated by faulted line identification. In this respect, we propose real-time fault detection identification functionality obtained computing parallel synchrophasor-based estimators. Each estimator is characterized different...
The paper aims at assessing the effects of combined voltage and/or current synchrophasor measurements, and their associated uncertainties, on accuracy state estimators adopted in distribution systems. Such an assessment is first carried out with respect to a generic transmission line purpose determining combination measurements that provides best estimated quantities. A comprehensive analysis impact different measurement uncertainties operating conditions included for this specific case. In...
We present and experimentally validate in a real-scale medium voltage (MV) grid synchrophasor network that exploits the availability of public 4G LTE communication infrastructure. An 18 buses, 10 kV feeder located Huissen, The Netherlands, has been equipped with Phasor Measurement Units (PMUs) connected to MV by means dedicated current sensors. PMUs stream data through via an information-centric networking-based middleware, named C-DAX. measurements are received time-aligned at phasor...
An increasing number of phasor measurement units (PMUs) are being deployed in power systems order to enhance the situational awareness and, near future, we expect that many networks will be extensively equipped with PMUs. These devices provide accurate and synchronized voltage/current phasors (called synchrophasors) at a reporting rate up 60 measurements-per-second, which is significantly different type information respect commonly-used magnitude measurements remote terminal (RTUs). PMUs...
This paper presents successful field results of a novel fault location approach for active distribution networks, which exploits time-synchronized measurements from Phasor Measurement Units (PMUs). In this respect, we show how centralized combining synchrophasor multiple Distribution-PMUs (D-PMUs) allows to address the challenge accurately locating many types (such as 3-phase, 2-phase, earth faults) in all grid topologies and grounding systems radial or meshed well solidly grounded isolated...
This paper presents a real-scale field validation of Distributed System State Estimation (DSSE) in medium-voltage active distribution network Germany. study two DSSE solutions using different measurement configurations: non-linear state estimator based on conventional measurements from Remote Terminal Units (RTUs), and linear time-synchronized Distribution Phasor Measurement (D-PMUs). The compares the performances both estimators demonstrates how D-PMU-based DSSE, with same number devices,...