Fusion of Multirate Measurements for Nonlinear Dynamic State Estimation of the Power Systems

Ghosal, Malini; Rao, V. Srinivasa

doi:10.1109/tsg.2017.2737359

Cited by 50 publications

(20 citation statements)

References 23 publications

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“…Aunque el objetivo de estos trabajos está dirigido a la a fusión multisensor, los modelos presentados son un claro ejemplo de la sinergia entre datos faltantes y MF. También destacan, trabajos que combinan los datos de medición de todos los sensores que utilizan algoritmos especiales para la fusión de datos multisensor (Nwe y Tun, 2017;Ghosal y Rao, 2019). Salt et al (2008) introducen lineamientos de los SMNC para ofrecer alternativas referente a los Sistemas de Control Basados en Red (NCS: Networked Control Systems) con el propósito de atender el desfase entre los muestreadores de las partes remota y local, cuando se requiere su sincronización.…”

Section: E1-4unclassified

Modelo de sistema multisensor con enfoque de muestreo multifrecuencia

Yánez

Alfonsi

2021

recibe

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En la fase temprana de diseño de un multisensor están las especificaciones funcionales que establecen el comportamiento sus señales, donde es importante analizar la influencia de los tiempos de muestreo en el despliegue temporal entre los datos de entrada y salida disponibles del multisensor, como del enlace de comunicación que pudieran utilizar. Por tanto, en este trabajo se desarrolla un modelo de sistema multisensor considerando múltiples señales con periodos de muestreo que pueden ser diferentes del proceso y datos de estado, incluyendo la limitación temporal del enlace de comunicación. El sistema consta de los componentes: multisensor y estación base. Además, se desarrolló un modelo de simulación en Scilab/Xcos para ejercitar diferentes escenarios. El modelo ofrece un perfil temporal de la secuencia de datos sensoriales bajo diferentes esquemas de muestreo, permitiendo presentar la evolución de las señales con pérdidas o ausencias de muestras, las cuales al ser tratadas sistemáticamente con operadores multifrecuencia y funciones de interpolación para su reconstrucción, conducen a resultados utilizables para la abstracción del mundo real. Finalmente, la efectividad del modelo se ilustra mediante simulaciones numéricas.

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Section: E1-4unclassified

Modelo de sistema multisensor con enfoque de muestreo multifrecuencia

Yánez

Alfonsi

2021

recibe

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“…Synchronous multi-sensor systems have been investigated in the literature [37], [38]. However, only a few works discuss asynchronous systems, including sensors with various sampling rates [39], [40]. A multi-rate multiple sensors fusion method is developed in [41].…”

Section: A Literature Reviewmentioning

confidence: 99%

A New Fusion Estimation Method for Multi-Rate Multi-Sensor Systems With Missing Measurements

et al. 2020

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A new fusion strategy is introduced in this article to estimate state for multi-rate multisensor systems with missing measurements. N sensors, which possess various sampling rates, render the measurements. Missing measurements with a certain probability pattern are also investigated. For these types of systems, Multi-rate Kalman filters are designed to estimate a target position at various sampling rates. Next, Ordered Weighted Averaging (OWA) operator is utilized to integrate multi-rate Kalman filters and improve the estimation quality. A new fusion strategy based on a real covariance matrix is introduced for updating the weighting factors, and proof of convergence is granted. Simulation studies on a tracking system verify the superior performance of the proposed fusion strategy in comparison with the Kalman filter, the multi-rate Kalman filters, and also the previous fusion methodology. INDEX TERMS Multi-rate Kalman filter, estimation, sensor data fusion, missing measurements, OWA operator.

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“…When a large number of DERs are connected to the distribution network, SCADA cannot effectively solve the DER access control problem. This is mainly because the SCADA has a low sampling density, remote terminal unit (RTU) data upload rate is low, often in the range of 0.5-2 frames/s [22], and the clocks of the stations are not uniform, resulting in inconsistent data time sections, an inaccurate system operation status [23], failures of the traditional radiation current protection scheme of the distribution network [24], a limited state estimation accuracy [25], and other issues. From the perspective of the protocol, since the IEC 60870-5-101/104 protocol does not include synchronization time and phasor data, the data time accuracy is not high, and the voltage phasor accuracy obtained by iteratively solving other measurement information is difficult to guarantee.…”

Section: Active Distribution Network Business Traffic Demandmentioning

confidence: 99%

“…From the perspective of application, whether all the information is needed in different application scenarios needs to be considered. For example, the master station needs all data to improve the accuracy of SCADA data [22,33]. However, for the hierarchical-distributed protection and control of the active distribution network, control units of each area or layer only need to acquire the synchronized phasor data to start the corresponding protection, and do not need to obtain all the information [8,34].…”

Section: Protocols Comparisonmentioning

confidence: 99%

A Priority-Based Synchronous Phasor Transmission Protocol Extension Method for the Active Distribution Network

Tao

Ding

et al. 2019

Applied Sciences

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With the advancement of active distribution network construction, to solve the shortcomings of the existing distribution network technology in distribution network perception and control, the relevant technologies of the Wide Area Measurement System (WAMS) in the transmission network have attracted more attention in terms of their usage in the distribution network. Micro Multifunction Phasor Measurement Unit (μMPMU), as an example, is being gradually utilized in the distribution network. However, the existing synchronous phasor transmission protocol is mainly designed for the transmission network, which requires an extension to meet the communication requirements to be directly used in the distribution network. In this work, the requirements of active distribution network communication are analyzed, and trade-offs between National Standard of the People’s Republic of China/Recommended (GB/T) 26865.2-2011 and International Electro technical Commission (IEC) 60870-5-101/104 protocol are compared. An extension method of the communication protocol is proposed, with the benefits of the prioritized transmission of important data, expanded remote control function of μMPMU, increased types of offline files, and reduced amount of network communication and data storage. The method is built upon the existing GB/T 26865.2-2011 protocol, and refers to the Application Service Data Unit (ASDU) of IEC 60870-5-101/104 to add an application extension frame. Application extension frames are used to transmit telemetry data, telesignalization, partial commands, and partial offline files. Finally, an experimental environment is set up, which includes a phasor measurement unit (PMU) Emulator, distribution network phasor data concentrator (PDC), and main station emulator to implement the standard GB/T 26865.2-2011 protocol and extension protocol. The feasibility and effectiveness of the method are confirmed by the superior performance of the extended protocol compared with the standard protocol.

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Fusion of Multirate Measurements for Nonlinear Dynamic State Estimation of the Power Systems

Cited by 50 publications

References 23 publications

Modelo de sistema multisensor con enfoque de muestreo multifrecuencia

Modelo de sistema multisensor con enfoque de muestreo multifrecuencia

A New Fusion Estimation Method for Multi-Rate Multi-Sensor Systems With Missing Measurements

A Priority-Based Synchronous Phasor Transmission Protocol Extension Method for the Active Distribution Network

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