Synchronized Waveforms – A Frontier of Data-Based Power System and Apparatus Monitoring, Protection, and Control

Xu, Wilsun; Huang, Zhenyu; Xie, Xiaorong; Liu, Chun

doi:10.1109/tpwrd.2021.3072889

Cited by 41 publications

(8 citation statements)

References 36 publications

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“…The faster dynamics of the future grid due the use of IBRs is a challenge for current measurement systems as already recognized by system operators [114], [115].…”

Section: E Lack Of Situational Awareness and System Understandingmentioning

confidence: 99%

Survey of Real-World Grid Incidents–Opportunities, Arising Challenges and Lessons Learned for the Future Converter Dominated Power System

Wachter,

Gröll,

Hagenmeyer

2024

IEEE Open J. Power Electron.

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To reach the climate goals set by national and international institutions, a vast transition of the legacy power system is unavoidable. The necessary integration of distributed, renewable generation devices, which are often interfaced with power electronic converters, has a non-negligible influence on the characteristics of the power grid. This is particularly visible during abnormal grid conditions such as faults. For rotating machines, the fast-timescale reaction to these events is mainly determined by physical properties. However, power electronic devices lack this strong coupling and their behavior is generated by the control and automation system, making them a major field of interest during this transition. The present paper provides a survey of real-world incidents, as for example blackouts or oscillatory incidents, that are discussed with respect to the implications for future converter dominated power grids. For typical cascading outages it is shown, where the increasing penetration of distributed, renewable generation and smart grid technologies can be leveraged to increase the system resilience, e.g. by providing grid services through adequate control design or by enabling microgrid concepts. Further, real-world examples of newly emerging challenges driven by power electronic devices are presented. The mechanisms of control system interactions with the neighboring grid and its inherent complex dependency on various factors is illustrated. Lastly, resulting structural developments such as the changed resonance properties of low voltage grids and the increase of harmonic emissions are exemplified.

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“…The faster dynamics of the future grid due the use of IBRs is a challenge for current measurement systems as already recognized by system operators [114], [115].…”

Section: E Lack Of Situational Awareness and System Understandingmentioning

confidence: 99%

Survey of Real-World Grid Incidents–Opportunities, Arising Challenges and Lessons Learned for the Future Converter Dominated Power System

Wachter,

Gröll,

Hagenmeyer

2024

IEEE Open J. Power Electron.

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“…With the development of modern communication technology [21], current differential protection is basically unaffected by distance between stations [11,22]. Based on the dedicated communication channel or wide-area network channel, the exchange of current data with time stamp can be realized by the transmission protection devices at double terminals or multiple terminals [23], and the wide-area protection of long-distance transmission lines can be realized.…”

Section: Novel Principle Of Wide-area Current Differential Protectionmentioning

confidence: 99%

Power supply arm protection scheme of high-speed railway based on wide-area current differential

Lin

Hong

et al. 2023

Rail. Eng. Science

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When fault occurs on cross-coupling autotransformer (AT) power supply traction network, the up-line and down-line feeder circuit breakers in the traction substation trip at the same time without selectivity, which leads to an extended power failure. Based on equivalent circuit and Kirchhoff’s current law, the feeder current characteristic in the substation, AT station and sectioning post when T–R fault, F–R fault, and T–F fault occur are analyzed and their expressions are obtained. When the traction power supply system is equipped with wide-area protection measurement and control system, the feeder protection device in each station collects the feeder currents in other two stations through the wide-area protection channel and a wide-area current differential protection scheme based on the feeder current characteristic is proposed. When a short-circuit fault occurs in the power supply arm, all the feeder protection devices in each station receive the feeder currents with time stamp in other two stations. After data synchronous processing and logic judgment, the fault line of the power supply arm can be identified and isolated quickly. The simulation result based on MATLAB/Simulink shows that the power supply arm protection scheme based on wide-area current differential has good fault discrimination ability under different fault positions, transition resistances, and fault types. The verification of measured data shows that the novel protection scheme will not be affected by the special working conditions of the electrical multiple unit (EMU), and reliability, selectivity, and rapidity of relay protection are all improved.

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“…Once it keeps burning, there may be some serious consequences, even to be a power outage accident for transmission system in the worst case, which may go against the carbon peak and carbon neutrality strategies [3,4]. In the past years, some typical arc-related accidents have occurred in the power transmission system in China [5][6][7][8]. For example, an insulator string, which was paralleled with an arcing horn (Arcing horn, which is a widely used protecting device in high voltage DC transmission grounding lines, is a pair of rod-rod electrodes in parallel with insulator [9][10][11], as shown in figure 1), was burst and exploded.…”

Section: Introductionmentioning

confidence: 99%

Dynamic climbing behavior and self-extinction mechanism of DC arc in a gradually changed air gap

Guan,

Yang,

Yin

et al. 2024

Phys. Scr.

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DC arc behavior is normally a complicated and rapid time-dependent evolution process. To investigate the climbing behavior, dynamic properties, as well as the self-extinction mechanism, an experimental platform in collaboration with a pair of Jacob’s ladder electrodes was established. The overall evolution process including arc generation, arc combustion, and arc self-extinction was well accomplished. The dynamic climbing behavior and dynamic emission spectrum were captured. The dynamic volt-ampere characteristic, excitation temperature and electron density were all analyzed during the overall evolution process. Furthermore, the self-extinction mechanism under the function of Jacob’s ladder electrodes was explored. The experimental observations show that a two-stage climbing behavior is performed in succession. The dynamic resistance is fluctuated significantly in purple arc stage, while it is stable in yellow arc stage. The excitation temperature is positively correlated with arc current, but not strictly linear. The co-action results of two dynamic features make it more favorable for quick separation from the external ability of power supply. As a result, the arc is transitioned from self-sustaining state to non-self-sustaining state. This paper is regarded as a preliminary research aiming to provide some references for dynamic properties and self-extinction mechanism of the climbing arc in arcing horn.

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Synchronized Waveforms – A Frontier of Data-Based Power System and Apparatus Monitoring, Protection, and Control

Cited by 41 publications

References 36 publications

Survey of Real-World Grid Incidents–Opportunities, Arising Challenges and Lessons Learned for the Future Converter Dominated Power System

Survey of Real-World Grid Incidents–Opportunities, Arising Challenges and Lessons Learned for the Future Converter Dominated Power System

Power supply arm protection scheme of high-speed railway based on wide-area current differential

Dynamic climbing behavior and self-extinction mechanism of DC arc in a gradually changed air gap

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