Power System Frequency Monitoring Network (FNET) Implementation

Zhong, Zhian; Xu, Chunchun; Billian, B.J.; Zhang, Li; Tsai, S.-J.S.; Conners, Richard W.; Centeno, Virgilio; Phadke, A.G.; Liu, Yilu

doi:10.1109/tpwrs.2005.857386

Cited by 297 publications

(101 citation statements)

References 22 publications

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“…The power grid frequency dataset used in this paper is provided by FNET/GridEye. As a pioneering WAMS, FNET/GridEye was originally developed in 2003 and is now operated by the University of Tennessee, Knoxville (UTK), and Oak Ridge National Laboratory (ORNL) [15].…”

Section: Wide-area Frequency Monitoring Network Fnet/grideyementioning

confidence: 99%

Impacts of Power Grid Frequency Deviation on Time Error of Synchronous Electric Clock and Worldwide Power System Practices on Time Error Correction

et al. 2017

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Synchronous electric clocks utilize power grid frequency as their timing reference. Power grid frequency deviation away from its nominal value results in synchronous electric clocks running fast or running slow (also known as the time error). In this article, statistical analysis on time error of synchronous electric clocks around the world is firstly presented using the power grid frequency measurements recorded by the wide-area frequency monitoring network FNET/GridEye. Then, the time error correction (TEC) process provided by electric utilities is analyzed and the worldwide TEC practice is investigated. Eventually, regions of the world where electric utilities provide TEC service are differentiated from those without TEC services. Analytical results demonstrate that the average time error of synchronous electric clocks in North America seems to be less than five seconds, and it has not changed very much over the past few years. On the other hand, the identification results present that up to the end of 2016, many electric utilities around the world, especially in North America and Europe, provided the TEC service to periodically remove the accumulative time error of synchronous electric clocks.

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Section: Wide-area Frequency Monitoring Network Fnet/grideyementioning

confidence: 99%

Impacts of Power Grid Frequency Deviation on Time Error of Synchronous Electric Clock and Worldwide Power System Practices on Time Error Correction

et al. 2017

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“…1 shows the smart storage concept for the ubiquitous power grid. Supply and demand imbalance of the power system can be observed from frequency deviation at home outlet [15]- [17]. V2G power output is controlled as droop characteristics against the frequency deviation shown in Fig.…”

Section: Smart Storage For Ubiquitous Power Grid [13]mentioning

confidence: 99%

Autonomous Distributed Vehicle-to-Grid for Ubiquitous Power Grid and its Effect as a Spinning Reserve

Ota¹,

Taniguchi

Nakajima

et al. 2011

Journal of International Council on Electrical Engineering

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-This paper propose an autonomous distributed vehicle-to-grid control scheme of gridconnected (plug-in hybrid) electric vehicle. Grid-friendly charge and discharge maintaining user convenience for plug-out and battery state-of-charge is realized based on frequency measurement at the plug-in terminal. Implementing proposed scheme to automotive power electronics circuit, (plug-in hybrid) electric vehicle works as a smart storage which is an alternative to stationary battery. The smart storage is expected to be a spinning reserve because of its high-speed response without information exchange to a central load dispatch center. An effect of the autonomous distributed vehicle-to-grid and cooperation with centralized speed governor control and load frequency control of conventional thermal power generator is evaluated.

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“…These concerns drive the development of power system technology. Among all the newly-developed applications that aim at satisfying those new technological demands, the so-called wide area measurement system (WAMS) opens a new avenue for power system stability analysis and control, and it has been attracting increasing attention in recent years, since it is a powerful tool for power system monitoring, protection and control, and has been widely used in the energy management systems of power systems [8][9][10][11]. WAMS measurements have high precision and short updating cycles and can measure the node states directly, but due to the high costs of PMU devices and their placement problems, how to utilize WAMS measurements and SCADA information in state estimation effectively must be faced and solved now [12,13].…”

Section: Introductionmentioning

confidence: 99%

A Mixed WLS Power System State Estimation Method Integrating a Wide-Area Measurement System and SCADA Technology

Jin

Shen

2018

Energies

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Abstract:To address the issue that the phasor measurement units (PMUs) of wide area measurement system (WAMS) are not sufficient for static state estimation in most existing power systems, this paper proposes a mixed power system weighted least squares (WLS) state estimation method integrating a wide-area measurement system and supervisory control and data acquisition (SCADA) technology. The hybrid calculation model is established by incorporating phasor measurements (including the node voltage phasors and branch current phasors) and the results of the traditional state estimator in a post-processing estimator. The performance assessment is discussed through setting up mathematical models of the distribution network. Based on PMU placement optimization and bias analysis, the effectiveness of the proposed method was proved to be accurate and reliable by simulations of different cases. Furthermore, emulating calculation shows this method greatly improves the accuracy and stability of the state estimation solution, compared with the traditional WLS state estimation.

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Power System Frequency Monitoring Network (FNET) Implementation

Cited by 297 publications

References 22 publications

Impacts of Power Grid Frequency Deviation on Time Error of Synchronous Electric Clock and Worldwide Power System Practices on Time Error Correction

Impacts of Power Grid Frequency Deviation on Time Error of Synchronous Electric Clock and Worldwide Power System Practices on Time Error Correction

Autonomous Distributed Vehicle-to-Grid for Ubiquitous Power Grid and its Effect as a Spinning Reserve

A Mixed WLS Power System State Estimation Method Integrating a Wide-Area Measurement System and SCADA Technology

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