Power Quality Measurement System With PMU Functionality Based on Interpolated Sampling

Kitzig, Jan-Philipp; Schlaghecke, Sven; Bumiller, Gerd

doi:10.1109/tim.2018.2863458

Cited by 30 publications

(10 citation statements)

References 20 publications

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“…The duplications refer to different combinations that result to the same placement. For instance, combinations of [1,3,2], [2,1,3], [2,3,1], [3,1,2] and [3,2,1] are duplications to a combination of [1,2,3]. Unlike other test systems, buses in the IEEE 24-bus are labelled in a very bad sequence, in which only two interconnected buses can be identified as the longest path in a sequence.…”

Section: Resultsmentioning

confidence: 99%

“…This step is carried out together with the procedure in Section 3.1 until AL is empty. By applying this step, combinations such as [3,1,4]…”

Section: Symmetry Constraintsmentioning

confidence: 99%

“…, [5,2] and [5,3,1] can be avoided as they are duplication or symmetrical to the combinations of [1,3,4], [1,3,5] and [2,5].…”

Section: Symmetry Constraintsmentioning

confidence: 99%

“…The first prototype of PMU was developed in 1980s by Virginia Tech, and currently, there are a number of PMU technologies being deployed all over the world to get precise power system state measurements [1]. The data collected from PMUs can be used to identify fault location [2], detect power quality events [3] and evaluate power system stability [4]. PMUs are suggested to be installed at all buses to ensure full system observability.…”

Section: Introductionmentioning

confidence: 99%

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A Bounded Exhaustive Search Technique for Optimal Phasor Measurement Unit Placement in Power Grids

et al. 2020

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This paper proposes a technique to determine the possible optimal placement of the phasor measurement unit (PMU) in power grids for normal operating conditions. All possible combinations of PMU placement, including infeasible combinations, are typically considered in finding the optimal solution, which could be a massive search space. An integer search algorithm called the bounded search technique is introduced to reduce the search space in solving a minimum number of PMU allocations whilst maintaining full system observability. The proposed technique is based on connectivity and symmetry constraints that can be derived from the observability matrix. As the technique is coupled with the exhaustive technique, the technique is called the bounded exhaustive search (BES) technique. Several IEEE test systems, namely, IEEE 9-bus, IEEE 14-bus, IEEE 24-bus and IEEE 30-bus, are considered to showcase the performance of the proposed technique. An initial Monte Carlo simulation was carried out to evaluate the capability of the bounded search technique in providing a smaller feasible search space. The effectiveness of the BES technique in terms of computational time is compared with the existing exhaustive technique. Results demonstrate that the search space can be reduced tremendously, and the computational burden can be eased, when finding the optimal PMU placement in power grids.

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Section: Resultsmentioning

confidence: 99%

“…This step is carried out together with the procedure in Section 3.1 until AL is empty. By applying this step, combinations such as [3,1,4]…”

Section: Symmetry Constraintsmentioning

confidence: 99%

“…, [5,2] and [5,3,1] can be avoided as they are duplication or symmetrical to the combinations of [1,3,4], [1,3,5] and [2,5].…”

Section: Symmetry Constraintsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A Bounded Exhaustive Search Technique for Optimal Phasor Measurement Unit Placement in Power Grids

et al. 2020

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“…PMUs provide such synchronized time-stamped data using global positioning system (GPS) clock. The data from PMUs are widely used in frequency control systems [2], state estimation [3], power quality measurement [4], etc. PMU sends the synchro-phasor data to the phasor data concentrator (PDC) through unicast or multicast.…”

Section: Introductionmentioning

confidence: 99%

A Wide Range and High Swing Charge Pump for Phase Locked Loop in Phasor Measurement Unit

Estebsari

2019

2019 IEEE International Conference on Environment and Electrical Engineering and 2019 IEEE Industrial and Commercial Power Syst

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Phasor Measurement Units are widely utilized in power systems to provide synchrophasor data for a verity of applications, mainly performed by Energy Management Systems (EMS). Synchrophasors are measured at different parts of the network and transmitted to Phasor Data Concentrator (PDC) at a rate of 30-60 samples per second. The synchronization is done by means of a phase locked oscillator inside PMU which uses clock signal of the Global Positioning System (GPS). In this paper a novel charge pump with an appropriate operation capability in phaselocked-loops is presented. By using this phase locked loop in phase measurement unit, the total performance of this circuit will be improved. The proposed charge pump uses current mirror techniques in order to achieve a wide range of output voltage to control the oscillator and also has a good performance in a wide range of frequency from 33MHz to 555MHz. This circuit is designed and simulated in TSMC 0.18um CMOS technology. The proposed charge pump only consumes 390uW power in supply voltage of 1.8V at 500MHz and has a maximum current of 16.43uA with a acceptable current matching between source and sink currents. It is also capable to be used in a wide frequency range and low power applications.

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Adaptive current harmonic estimation under fault conditions for smart grid systems

Rivas

Silva

Abrão

2020

Electric Power Systems Research

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Power Quality Measurement System With PMU Functionality Based on Interpolated Sampling

Cited by 30 publications

References 20 publications

A Bounded Exhaustive Search Technique for Optimal Phasor Measurement Unit Placement in Power Grids

A Bounded Exhaustive Search Technique for Optimal Phasor Measurement Unit Placement in Power Grids

A Wide Range and High Swing Charge Pump for Phase Locked Loop in Phasor Measurement Unit

Adaptive current harmonic estimation under fault conditions for smart grid systems

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