Circuit Breaker Rate-of-Rise Recovery Voltage in Ultra-High Voltage Lines with Hybrid Reactive Power Compensation

Liu, Hongshun; Wang, Zhen; Yang, Jingjing; Li, Bin; Ren, Ang

doi:10.3390/en11010100

Cited by 6 publications

(6 citation statements)

References 17 publications

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“…Energies 2022, 15 Figure 12a demonstrates the moment's waveform is nearly harmonic and its frequency is ca. 38 Hz, which is substantially more than the synchronous drive's own resonant frequency of about 11 Hz.…”

Section: Results Of Computer Simulationmentioning

confidence: 99%

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Voltage Stabilisation of a Drive System Including a Power Transformer and Asynchronous and Synchronous Motors of Susceptible Motion Transmission

2022

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A mathematical model is developed of the master circuit of an electric driver system including a power transformer and susceptible motion transmission of asynchronous and synchronous drives. Electric motors drive water pumps by means of motion transmission that comprises two elastic couplings of lumped mechanical parameters and a long shaft of distributed mechanical parameters. Differential equations for oscillatory processes for the long shaft and the elastic couplings are different. The shaft is described with partial derivative Euler–Poisson equations, which, combined with the boundary conditions, form mixed problems from the mathematical point of view. The elastic couplings, on the other hand, are described with the ordinary second type Lagrange equations. Based on the theory of electromagnetic field, the partial differential equations describe the skin effects across the rotor age bars. Vertical pumps are presented by means of a loading torque waveform as a function of the input shaft’s angular velocity. The complex mathematical model serves to analyse electromechanical transient processes across the integrated drive system. Starting from there, conditions of stabilisation of the drive system voltage are determined. Electromechanical state equations are presented in the normal Cauchy form and integrated using the fourth-order Runge–Kutta method. Results of computer simulations are shown with graphics, which are interpreted and described.

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Section: Results Of Computer Simulationmentioning

confidence: 99%

“…Static capacitor batteries are commonly used as compensation devices. The method gets more complicated in the case of high-power drive systems supplied from medium-voltage grids, which requires application of rather costly compensation equipment [12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Voltage Stabilisation of a Drive System Including a Power Transformer and Asynchronous and Synchronous Motors of Susceptible Motion Transmission

2022

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“…There may be damage to the control cables if the generator is switched off and then immediately switched on to the network without fulfilling the synchronization conditions [14][15][16][17]. Table 4 shows the values recorded during a time of 60 ms for I rms (effective value of the current) depending on the time during the considered case [14].…”

Section: Case Studymentioning

confidence: 99%

Important Factors for Consideration during the Specification of SF6 Circuit Breakers for High Voltage Generators

Alidemaj

Nika²

2020

Energies

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This paper describes and analyzes the phenomena that occur in the case of a current interruption due to faults in the high voltage circuit breaker. That happens during connection of a generator to the network without meeting the synchronization conditions. This paper also describes and analyzes the important factors that have to be considered during the specification of SF6 circuit breakers for high voltage generators. A high direct current component in the fault current poses a major problem during such interruptions. To investigate this problem and propose possible solutions, simulations were performed on a power network model completed with the network’s data, using software such as EMTP-ATP, PSS-E and MATLAB. Various modes of operation were simulated, which are important for analyzing the strain on circuit breakers near the generator. Based on the performed simulations, it can be concluded that circuit breakers with rapid reactions in interrupting the fault current in an energy system are not always a favorable solution due to the high value of the direct current component in the fault current, which prevents the current from passing through zero within a short time.

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“…The hybrid compensation of reactive power was examined in paper [14]. It is implemented through a stepped-man-aged shunt reactor.…”

Section: розглянуто конфIгурацiю та принцип роботи статичного тиристорного компенсатора реактивної потужностI з примусовою комутацIєю та mentioning

confidence: 99%

Constructing a method of multicoordinate control over the static thyristor compensators with forced commutation

Літковець

2020

EEJET

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Circuit Breaker Rate-of-Rise Recovery Voltage in Ultra-High Voltage Lines with Hybrid Reactive Power Compensation

Cited by 6 publications

References 17 publications

Voltage Stabilisation of a Drive System Including a Power Transformer and Asynchronous and Synchronous Motors of Susceptible Motion Transmission

Voltage Stabilisation of a Drive System Including a Power Transformer and Asynchronous and Synchronous Motors of Susceptible Motion Transmission

Important Factors for Consideration during the Specification of SF6 Circuit Breakers for High Voltage Generators

Constructing a method of multicoordinate control over the static thyristor compensators with forced commutation

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Circuit Breaker Rate-of-Rise Recovery Voltage in Ultra-High Voltage Lines with Hybrid Reactive Power Compensation

Cited by 6 publications

References 17 publications

Voltage Stabilisation of a Drive System Including a Power Transformer and Asynchronous and Synchronous Motors of Susceptible Motion Transmission

Voltage Stabilisation of a Drive System Including a Power Transformer and Asynchronous and Synchronous Motors of Susceptible Motion Transmission

Important Factors for Consideration during the Specification of SF6 Circuit Breakers for High Voltage Generators

Constructing a method of multi­coordinate control over the static thyristor compensators with forced commutation

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Constructing a method of multicoordinate control over the static thyristor compensators with forced commutation