Examples of Ferroresonance in a High Voltage Power System
The phenomenon of ferroresonance is of particular concern during capacitor voltage transformer (CVT) or coupling capacitor voltage transformer (CCVT) transients, and can cause noticeable deviation of
Event-EEHE-2023-managing-high-voltage-line-ripple-rejection
Attenuated by transformer Component damage (overvoltage) due to filter gain near resonance Semiconductor devices must block (withstand) both HVDC voltage AND ripple voltage superimposed
Resonance characteristic analysis and damping control for
The resonance-induced current and voltage spikes may cause damage or nuisance tripping to sensitive equipment, leading to failure of the automatic transfer and interruption of the
Understanding the Impact of Circuit Resonance
The additive current from the fundamental frequency and the resonance frequency raises the effective current''s magnitude to a point where it can cause fuses to
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Research on the causes of resonance of DC bus voltage in subway
Research on the causes of resonance of DC bus voltage in subway power supply system
Research on the causes of resonance of DC bus voltage in subway
In this paper, the chaos dynamics behavior of a third-order nonautonomous ferroresonance chaotic circuit with single phase transformer has been analyzed and simulated.
General approach for accurate resonance analysis in transformer
In this case, the total impedance becomes either minimum (series resonance) or maximum (parallel or anti-resonance). In case of a series resonance, the transformer is exposed to high
Research on the causes of resonance of DC bus voltage in subway
Not only the traction side may have special loads similar to the line short circuit, but also the DC bus may produce resonance. Therefore, it is necessary to explore the mechanism of DC bus voltage
DC Impedance-Model-Based Resonance Analysis of a VSC-HVDC
ailed VSC-HVDC model simulated in a real-time digital simulator. Reso-nances are examined in frequency domain (e.g., Bode plots . nd Nyquist plots) using the derived analytical imped.
Resonance propagation analysis for inverterâ dominated multiâ ACâ bus
However, under special circumstances, the harmonic source has almost no effect on neighbouring converters, but causes resonance with the remote converters. In this situation, the resonance path
Research on the causes of resonance of DC bus voltage in subway
Electric traction is adopted in subway, and its safe operation depends on the stability and reliability of the power supply system. With the increasing traffic density and the high-density grid-connected
Research on the causes of resonance of DC bus voltage in subway
With the increasing traffic density and the high-density grid-connected application of new energy systems, the electrical characteristics of the subway power supply system often change greatly. Not
Resonance analysis for DC-side laminated bus-bar of a high speed
Recently, research and development of next-generation power semiconductors, such as SiC and GaN, have been done, then high speed switching inverter circuit has also been discussed. On the other
High‐frequency resonance in HVDC and wind systems:
Such harmonic amplification is an important consideration in power quality analysis of traditional power systems . With unstable (i.e. negatively
Sequence Impedance Modeling and Converter-Grid Resonance Analysis
At lower frequency, especially within 10-20 Hz of the fundamental frequency in which dc bus voltage control is active and dc bus capacitor impedance is high, the assumption becomes
Examples of Ferroresonance in a High Voltage Power System
Abstract— Catastrophic equipment failures continue to occur today due to ferroresonance even though this phenomenon has been extensively studied over the past ninety years. This paper is concerned
Analysis and experimental verification of the high voltage DC bus
Electric vehicles (EV) require the main inverter to convert the DC current of the high voltage traction battery to an AC current suitable for the electrical motor. By switching its semiconductors, the
High-frequency resonance in HVDC and wind systems: Root causes
Since impedance is the root cause for resonance in electri-cal systems, an effective method to characterize power system resonance involving converter-based generation and trans-mission is by
Mechanical Resonance and Inverter DC Bus Overvoltage
Mechanical resonance can excite electrical harmonics in the drive system. These harmonics can interact with the inverter''s control loops, causing instability or oscillatory energy
DC Bus Voltage High-Frequency Disturbances Analysis for DC
This article examines high-frequency disturbances in interconnected converters within dc microgrids, focusing on the effects of electromagnetic interference (EMI) filters and long
SOLVING STATOR END-WINDING DUSTING AND RESONANCE
BACKGROUND Generator stator end winding resonance and high levels of end winding vibration are a significant industry issue that affects many generators. The authors will discuss in this paper, two
High‐frequency resonance in HVDC and wind systems: Root causes
Mentioning: 2 - This paper presents methods to model and solve high‐frequency resonance problems in HVDC and wind power systems. Control and digital PWM delays are identified as a common root
Resonance Analysis Focusing on Stray Inductance and Capacitance
In general, high-speed switching operations, such as high-di/dt and -d dt, may cause electromagnetic noise and a surge voltage v/ in the circuits. Moreover, the stray induc-tance between a DC-capacitor
Dynamic Resonance Analysis and Oscillation Damping of Multi
In order to improve the system stability, this paper proposes an effective active damping method as a remedy to suppress voltage and power resonances in the VSC-MTDC grids by injecting damping
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