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Three-Point Synchrophasor Estimator with Better Off-Nominal Frequency Leakage Reduction
2021
IEEE Access
Preserved Fulltext
Novak : Three-Point Synchrophasor Estimator with Better Off-Nominal Frequency Leakage Reduction [9] Simple and well understood Steady-state conditions preferred Off-nominal frequency leakage (reduced ...
Again, the off-nominal frequency of 51.5 Hz is selected to demonstrate the differences between the three estimators. ...
doi:10.1109/access.2021.3069043
fatcat:uzydp3bylbfs7kbktbqgdb34ue
Phasors Estimation at Offnominal Frequencies Through an Enhanced-SVA Method With a Fixed Sampling Clock
2017
IEEE Transactions on Power Delivery
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This paper provides a solution to estimate synchrophasors with high accuracy at off-nominal frequencies using a nominal frequency clock. ...
The test cases include: steady-state with off-nominal frequencies, harmonic distortions, amplitude and phase modulations, positive and negative ramps of frequency, and frequency jump. ...
If the estimated frequency is off-nominal, then the sampled signal will be resampled at a rate which is synchronized with the off-nominal power system frequency. ...
doi:10.1109/tpwrd.2016.2597778
fatcat:e4uh3qqq5vctjbvo3fcudoywam
Dynamic Impedance Estimation: Challenges and Considerations
2021
Applied Sciences
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The paper makes several considerations and highlights the challenges to obtain a precise estimation. Transducer equalization and harmonic synchrophasor estimation (HSpE) are reviewed and discussed. ...
Dynamic impedance estimation will continue to be a great challenge for the power systems engineer as the system complexity increases with the massive insertion of power electronic inverters and the associated ...
Each of the circles shows different off-nominal frequencies.
Figure 7 . 7 TVE for the harmonic synchrophasor for a signal with noise and harmonics. ...
doi:10.3390/app11020558
fatcat:4x5znr6btna73fgqg3px24s5zi
High Accuracy Measurement Device For Railways Applications
[article]
2018
Zenodo
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Furthermore, the switching frequencies associated with IGBT train drives can resonate causing serious over-voltages, particularly in overhead line (catenary) systems. ...
All the trains shall be equipped with an Energy Measurement Function (EMF), whose measurement accuracy has to be assessed and periodically reverified. ...
Consider that a sinusoid off-nominal system frequency is observed at intervals {0, T0, 2T0, 3T0,.. ...
doi:10.5281/zenodo.3332749
fatcat:nbfgd56vonhwvj54h3fmp5xere
Multifunction phasor analysis for distribution networks
2016
2016 IEEE International Workshop on Applied Measurements for Power Systems (AMPS)
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To deal with the off-nominal issue, TFT has been further refined to include iterative estimation of the actual fundamental frequency [6] . ...
Usually, T W is also assumed to span an integer number M of periods of the nominal power system frequency f 0 , which assures exact estimates for any multiple of frequency (f 0 /M ). ...
doi:10.1109/amps.2016.7602868
dblp:conf/amps/FrigoGBN16
fatcat:tj46tsnelzetff5nl7cqw4jjpi
Low-Cost Monitoring of Synchrophasors Using Frequency Modulation
2019
Energies
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Based on Frequency Modulation (FM) of the measured fundamental frequency (and harmonics), followed by immediate re-injection of the modulated waveform back into the network, the proposed method can be ...
Furthermore, the method does not require a separate communication media, but instead uses the power line itself to propagate the FM signals back to a central point. ...
The HV feeder runs at a nominal voltage of 10kV and is modelled as a three phase wood pole overhead line (also shown in Appendix A). ...
doi:10.3390/en12040611
fatcat:ext4yjn4xbasnjzycmw2v33nyq
A Phasor Measurement Unit Algorithm Using IIR Filters for FPGA Implementation
2019
Electronics
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Steady state errors for a rated voltage ± 10% and a rated frequency ± 5 Hz are < 0.000001% for total vector error (TVE) and < 1 µHz for frequency, with a latency of two mains cycles. ...
The IIR-based PMU easily satisfies all the requirements of IEC/IEEE standard and has a much better out of band signal rejection performance than a FIR-based PMU. ...
IIR filters are normally realised using the bilinear Z transform, together with cut-off frequency pre-distortion. ...
doi:10.3390/electronics8121523
fatcat:tgmjfon4obegtf6gjsavdv6j7a
Filter Design Masks for C37.118.1a-Compliant Frequency-Tracking and Fixed-Filter M-Class Phasor Measurement Units
2015
IEEE Transactions on Instrumentation and Measurement
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In particular, there is a delicate trade-off between passband flatness (the bandwidth test) and stopband rejection in the Out-Of-Band (OOB) test. ...
The M-class PMU with reporting rate 25Hz is the most difficult to design, for reasons given in this paper. ...
, then the deviation of the filter gain from unity is minimised, even during off-nominal frequency. ...
doi:10.1109/tim.2015.2445111
fatcat:2nilac5oc5dargsugocffgmfnm
Synchrophasor for enhancing operational reliability of Nigerian electric power grid
2017
SoutheastCon 2017
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This has increased the burdens on the existing transmission assets and in some cases, has caused the loading of the transmission assets beyond their design limits with consequent reduction in power quality ...
This paper looks into these techniques with the view to exploring their applicability to the Nigerian 330KV electric power grid, towards seeking ways to enhancing the performance of the grid for better ...
The conductors of the line were replaced with the same conductor size but three conductors bundle. ...
doi:10.1109/secon.2017.7925399
fatcat:cl3hgl4zcng77jsqvsxm65w4tq
Dynamic Security of Interconnected Electric Power Systems - Volume 1
2018
Figshare
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A Phasor Measurement U synchronized phasor, frequency, and rate of change of frequency estimates from As shown in Fig. 1 .5, the needed high speed synchronization sampling is achieved by a phase-lock ...
Sudden or large reductions in the energy production in power systems can be attributed to three main causes. ...
These drawbacks are mainly associated, for example, with: ...
doi:10.6084/m9.figshare.6169508.v1
fatcat:iztm2jwl5racvexdypaswm7xk4
Control and Communication Techniques for the Smart Grid: An Energy Efficiency Perspective
2014
IFAC Proceedings Volumes
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In their model, a charger is turned either off or on at full charging rate. ...
Point-to-point,
point-to-multipoint
Point-to-point Point-to-point,
point-to-multipoint
Point-to-multipoint
Supporting
case
Choi et al. (2008) Smallwood and
Wennermark (2010)
Unknown
Unknown ...
doi:10.3182/20140824-6-za-1003.01736
fatcat:26u7xwtucfc37psv3jve6un5ry
The Development of IoT Within Energy Infrastructure
[chapter]
2019
eIoT
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This information is used to make decisions either independently in a decentralized fashion or in coordination with the informatic components of other devices. ...
(4) the machine must deactivate the artificial megawatt output once the frequency has returned to the nominal frequency [266] . ...
In addition to point-to-point capabilities, it can create meshed networks with a range of 1-100 m at data rates of up to 3 Mbps [412, 427]. ...
doi:10.1007/978-3-030-10427-6_3
fatcat:bivdubpfq5dang2cqgbowqyxoy
A Survey of Machine Learning Methods for Detecting False Data Injection Attacks in Power Systems
[article]
2020
arXiv
pre-print
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Adversaries can successfully perform FDIAs in order to manipulate the power system State Estimation (SE) by compromising sensors or modifying system data. ...
SE is an essential process performed by the Energy Management System (EMS) towards estimating unknown state variables based on system redundant measurements and network topology. ...
The results proved that the machine learning algorithms perform better than any other algorithm (e.g., state vector estimation approach) in detecting FDIAs. ...
arXiv:2008.06926v1
fatcat:grxa2q5vords3ew2a6kuzrw3im
Survey of machine learning methods for detecting false data injection attacks in power systems
2020
IET Smart Grid
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Adversaries can successfully perform FDIAs to manipulate the power system state estimation (SE) by compromising sensors or modifying system data. ...
SE is an essential process performed by the energy management system towards estimating unknown state variables based on system redundant measurements and network topology. ...
The results proved that the machine learning algorithms perform better than any other algorithm (e.g. state vector estimation approach) in detecting FDIAs. ...
doi:10.1049/iet-stg.2020.0015
fatcat:kzfjgzhmybgntijdpszkhk4p7i
Toxicity Analysis and Cry Gene Profiling of Bacillus Thuringiensis Isolated from Western Ghats of Tamil Nadu State, India
2018
Proceedings of the Indian National Science Academy
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The most satisfactory way, in my opinion, is that of reducing the concept of finite procedure to that of a machine with a finite number of parts, as has been done by the British mathematician Turing". ...
The data collected was in the IEEE synchrophasor format C37.118 2005 [Min and Shengsong, 2005 ] that consists of frequency and three phases of voltages and currents. ...
The trajectories of the resulting three time scale redesigned system approach those of the nominal system when the filter gains are increased. ...
doi:10.16943/ptinsa/2018/49413
fatcat:2w6rohpbava5zh6m26tsiz7qky
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