Real-time hybrid state estimation incorporating SCADA and PMU measurements

Das, Kaushik; Hazra, Jagabondhu; Seetharam, Deva P.; Reddi, Ramesh; Sinha, A.K.

doi:10.1109/isgteurope.2012.6465749

Cited by 46 publications

(24 citation statements)

References 7 publications

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“…age sampling using phasor measurement unit is one sample in 20 ms [19]. Here, t sample is set to be 10 ms for the advantage of the conventional method.…”

Section: Time Delay Setting a Typical Frequency Of Volt-mentioning

confidence: 99%

Improvement of real‐time power tracking in microgrid using multi‐agent system

Yin

Ding

2017

IEEJ Transactions Elec Engng

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A multi-agent system (MAS) provides flexible and intelligent control schemes for microgrids and their units. However, a certain period of time is required for a controllable source (CS) to change its output power, and the communication delay poses a challenge for real-time tracking of CS output power in MAS control, an important factor affecting the transient performance of MAS power coordination. In this paper, we propose and emulate a new power tracking method based on the communication inside MAS about the change of output variation speed in every CS together with a timestamp for each change. The MAS emulates and tracks the total output power of all CSs in real time. Compared to the conventional method, the emulation results indicate that this new method has a significantly better real-time performance, especially for a large number of CS and under more undesirable communication conditions.

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“…age sampling using phasor measurement unit is one sample in 20 ms [19]. Here, t sample is set to be 10 ms for the advantage of the conventional method.…”

Section: Time Delay Setting a Typical Frequency Of Volt-mentioning

confidence: 99%

Improvement of real‐time power tracking in microgrid using multi‐agent system

Yin

Ding

2017

IEEJ Transactions Elec Engng

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“…The combined use of remote measurements and PMU measurements in the rectangular coordinates provides a great benefit when solving the SE problem on-line in the system of on-line control [5]. Modification of the classical SE procedure with the use of linear SE algorithm [6] suggests faster solving the SE problem with the specification of power system configuration on the basis of PMU measurements. At the same time, the small-scale networks existing in different countries are well-equipped with the quality telemetry, and, therefore, they do not need the improvement in the speed of the SE problem which is represented by a linear algorithm of state estimation [7].…”

Section: Introductionmentioning

confidence: 99%

The test equation method for linear state estimation based on PMU data

Kolosok

Korkina

Buchinsky

2014

2014 Power Systems Computation Conference

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The advent of next generation devices for synchronized phasor measurements (voltage and current values in lines) -PMU-makes it possible to realize linear algorithms of state estimation. The paper suggests the development of the test equation technique for linear state estimation of power system facilities that are monitored on the basis of PMU measurements. New algorithms for the construction of the test equations on the basis of PMU measurements are presented. The algorithms are based on the exclusion of unmeasured variables or state vector components from the electrical circuit equations written in the rectangular coordinates. By virtue of linear nature of these equations the obtained test equations are also linear. The paper presents the algorithms for bad data detection in PMU measurements as well as the algorithms for calculation of estimates, using linear test equations which make it possible to obtain a solution within one iteration. Performance of the algorithms was tested on a test network equipped with PMUs. The developed algorithms allow us to make local state estimation of individual power system facilities (power plants, substations, network sections) that are monitored online on the basis of PMU measurements

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“…As a result, these two schemes can be run independently of disturbances and prioritised list of feeders to be disconnected. LLSP of (8) is a well known problem of state estimation and has been thoroughly studied and implemented [40], [41]. The advantage of (8) is that number of unknowns are 3 * total num f eeders which is much smaller than number of unknowns in traditional state estimation algorithms.…”

Section: E Practical Implementationmentioning

confidence: 99%

Improved Load-Shedding Scheme Considering Distributed Generation

Das

Nitsas

Altin

et al. 2017

IEEE Trans. Power Delivery

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Abstract-With high penetration of distributed generation (DG), the conventional under-frequency load shedding (UFLS) face many challenges and may not perform as expected. This article proposes new UFLS schemes, which are designed to overcome the shortcomings of traditional load shedding scheme. These schemes utilize directional relays, power flow through feeders, wind and PV measurements to optimally select the feeders to be disconnected during load shedding such that DG disconnection is minimized while disconnecting required amount of consumption. These different UFLS schemes are compared in terms of frequency response, amount of consumption and DG disconnected during load shedding.

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Real-time hybrid state estimation incorporating SCADA and PMU measurements

Cited by 46 publications

References 7 publications

Improvement of real‐time power tracking in microgrid using multi‐agent system

Improvement of real‐time power tracking in microgrid using multi‐agent system

The test equation method for linear state estimation based on PMU data

Improved Load-Shedding Scheme Considering Distributed Generation

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