Optimal placement of PMUs with limited number of channels for complete topological observability of power systems under various contingencies

Rashidi, Farzan; Abiri, Ebrahim; Niknam, Taher; Salehi, Mohammad Reza

doi:10.1016/j.ijepes.2014.11.015

Cited by 49 publications

(34 citation statements)

References 28 publications

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“…Placing PMU at every bus in the system provides complete information on the system state estimation but results in a complex communication system. Optimal placement of PMUs proposed in References to obtain the complete observability of the system. These methodologies consider available PMU channels and installation costs of PMUs and obtained the optimal placement, which is effective even with PMU communication link failure or with contingencies.…”

Section: Online Indices/methodologiesmentioning

confidence: 99%

“…These methodologies consider available PMU channels and installation costs of PMUs and obtained the optimal placement, which is effective even with PMU communication link failure or with contingencies. The rules in state that direct measurements are taken at buses with PMUs and at other buses, either KCL or KVL is applied to calculate the voltage and current phasors.…”

Section: Online Indices/methodologiesmentioning

confidence: 99%

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Voltage instability detection using synchrophasor measurements: A review

Chappa¹,

Thakur

2020

Int Trans Electr Energ Syst

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Summary This article presents the concept of voltage instability and a critical review of the literature available for detecting voltage instability in the power system. Initially, the problem of voltage instability, the signification of P‐V, Q‐V curves, the effect of load models, on‐load tap changer (OLTC), and over‐excitation limits of generators on voltage instability are lucidly explained. A very brief description of conventional methodologies for voltage instability detection is also presented. This literature review mainly focuses on methodologies based on synchrophasor measurements including both local and global measurements. These methodologies' feasibility for real‐time application has been investigated. The indices that are compared for instability detection may serve as an introduction to measurement‐based voltage instability detection methodologies. The measurement‐based indices that are analyzed and compared are mainly based on the concept of Thevenin parameters estimation, generator equivalent models, nodal reactive power loss concept, and apparent power difference criteria. Thus, this paper attempted to compile all the work reported so far for voltage instability detection using synchrophasor measurements and for each methodology merits and demerits are lucidly discussed and are tabulated.

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Section: Online Indices/methodologiesmentioning

confidence: 99%

Section: Online Indices/methodologiesmentioning

confidence: 99%

Voltage instability detection using synchrophasor measurements: A review

Chappa¹,

Thakur

2020

Int Trans Electr Energ Syst

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“…However, there are several contributions to obtain full observability in the frequency-domain, i.e. using phasor quantities [25][26][27][28][29][30]. These contributions can be exploited extending the concept to the time domain.…”

Section: ) Number Of Communication Channelsmentioning

confidence: 99%

“…2) Minimal number of measuring devices: Power system observability analysis can be performed using numerical [25] and topological analysis [26][27][28][29]. The topological analysis follows observability rules.…”

Section: ) Number Of Communication Channelsmentioning

confidence: 99%

A Methodology for Transient State Estimation Based on Numerical Derivatives, Optimal Monitoring, and Filtered Measurements

Molina-Moreno

Medína

Cisneros-Magana

et al. 2018

IEEE Trans. Power Delivery

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This paper proposes a methodology for transient state estimation in power systems. The proposed methodology is formulated using approximation methods for derivatives to relate the state variables to measurements. It does not require knowledge of the steady state to establish the pre-disturbance operation conditions. The method uses an optimal monitoring system based on topological analysis to obtain full observability. A saving index is introduced to analyze the effectiveness of the instrumentation used. The adverse effect of noisy measurements in the estimation process is mitigated using an Infinite Impulse Response (IIR) filter. A transient index is introduced to estimate the fault location. The transient state estimation is assessed using two test systems. The results are validated through direct comparison against those obtained by simulation using SimPowerSystems toolbox of Simulink®. With the proposed methodology, the transient state estimation can be obtained with an important saving in the implementation of the measuring system and with considerably less computational effort.Index Terms-Approximation methods, infinite impulse response filters, observability, optimal monitoring, steady state, transient state estimation. I. Molina-Moreno is with the Facultad

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“…The aim of the authors in [77] is to recognize the effect of channel capacity of PMUs on their optimal placement for complete power system observability. Initially, the conventional full observability of power networks is formulated.…”

Section: Integer Programming (Ip)mentioning

confidence: 99%

Artificial Intelligence Versus Conventional Mathematical Techniques: A Review for Optimal Placement of Phasor Measurement Units

Negash

Khan

Yohannes

2016

Technol Econ Smart Grids Sustain Energy

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The Phasor Measurement Unit (PMU) is a contemporary metering device installed on system to enable the power system monitoring and control. PMUs are most accurate and advance time synchronized technology which provides measurements of voltages at the buses and also current phase values which are connected to those buses where these PMUs are located. PMU placement on each bus of a system is difficult to achieve either due to cost factor or due to non-existence limitation of communication facilities in some parts of the system. Moreover, as a consequence of Ohm's Law, when a PMU is placed at a bus, neighboring busses also become observable. This implies that a system can be made observable with a lesser number of PMUs than the number of busses. It is necessary to determine the minimum number of PMUs for entire observability of the power network. The optimal placement of PMUs (OPP) problem can be solved by various techniques. Hence in this paper a comprehensive review is presented on the OPP problems under the characterization of heuristic and mathematical methodologies. Also a comparison between

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Optimal placement of PMUs with limited number of channels for complete topological observability of power systems under various contingencies

Cited by 49 publications

References 28 publications

Voltage instability detection using synchrophasor measurements: A review

Voltage instability detection using synchrophasor measurements: A review

A Methodology for Transient State Estimation Based on Numerical Derivatives, Optimal Monitoring, and Filtered Measurements

Artificial Intelligence Versus Conventional Mathematical Techniques: A Review for Optimal Placement of Phasor Measurement Units

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