This novel de-icing method is based on characteristics of sinusoidal AC and theory of shunt capacitor over-compensation. By utilizing 10kV capacitor bank, which is installed as standard apparatus in substation, reactive current can be transmitted to the specific de-icing power line, which leads to over-compensation of network, and temperature ...
This novel de-icing method is based on characteristics of sinusoidal AC and theory of shunt capacitor over-compensation. By utilizing 10kV capacitor bank, which is installed as standard apparatus in substation, reactive current can be transmitted to the specific de-icing power line, which leads to over-compensation of network, and temperature ...
This paper analyzes the voltage quality problems on transmission line of 10kv distribution network, and then introduces a series compensation device, which is based on fast …
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The pre-test stipulates that the capacitance value of each section should be kept within the range of -5%~+10% of rated value, and the tanδ value at 10kV shall not exceed 0.4% (film-paper …
Properly placed shunt capacitors can improve power factor and voltage quality, and reduce reactive power demand so that active power loss. The nodes with violated voltage-unbalance limits or much varying reactive power demands are considered as to compensate with automatic-switched capacitors (ASC). While fixed shunt capacitors (FC) are
In this paper,a theoretical method for calculating the capacity and compensation point of series compensated capacitor is proposed,and the effects of fixed series capacitor compensation with different compensation points,series compensation degree and load rate are analyzed and simulated for a 10kV radial distribution network in Xiangshan county...
At the view of reducing grid loss and improving power quality and relying on the practical operating condition of power system, the intelligent grouping arithmetic used in Capacitor Optimal Configuration Programming Decision is able to provide optimal compensation capacity of reactive power compensation and voltage regulation under various ...
At the view of reducing grid loss and improving power quality and relying on the practical operating condition of power system, the intelligent grouping arithmetic used in Capacitor …
This paper analyzes the voltage quality problems on transmission line of 10kv distribution network, and then introduces a series compensation device, which is based on fast switching and can effectively solve the above problem. Furthermore, this paper calculates the voltage under a actual situation, which fits the expected results.
The extended grading capacitor (EGC) installed in parallel to multi-break circuit breaker (CB) chamber is a promising technique to suppress secondary arc. The effect of EGC on the interrupting performance of CB during is investigated in this paper. As CBs are subject to various operating burdens in practice, this paper is mainly devoted to the out-of-step fault. …
Capacitor reactive power compensation plays an important role in improving system voltage stability, reducing transmission line losses and substation losses. In this paper, for the 10kV …
To guarantee the uniform distribution of transient recovery voltage for double-break circuit breaker, grading capacitors are often installed in parallel with each interrupter unit. In this study, the influence of the capacitors on the secondary arc is systematically investigated. First, the equivalent circuit for ultra high voltage transmission line is developed. Taking the …
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Capacitor reactive power compensation plays an important role in improving system voltage stability, reducing transmission line losses and substation losses. In this paper, for the 10kV system of a 220kV substation, the capacitor external fuse protection all melted and the body burned accident, based on the faulty capacitor deconstruction ...
During the switching on/off of shunt capacitor banks in substations, vacuum circuit breakers (VCBs) are required to switch off or to switch on the capacitive current. Therefore, the VCBs have to be operated under a harsh condition to ensure the reliability of the equipment. This study presents a complete comparison study of ordinary and phase-controlled VCBs on switching 10 …
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The pre-test stipulates that the capacitance value of each section should be kept within the range of -5%~+10% of rated value, and the tanδ value at 10kV shall not exceed 0.4% (film-paper composite insulation). However, in the actual test, all the …
In this paper,a theoretical method for calculating the capacity and compensation point of series compensated capacitor is proposed,and the effects of fixed series capacitor compensation …
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A discharge breakdown fault of grading capacitor of 500 kV circuit breaker in a converter station, which occurred in breaker opening process, is analyzed.
As one of the main reactive power compensation methods, applications of the parallel compensation capacitor system are extensively observed in substations of different voltage …
Properly placed shunt capacitors can improve power factor and voltage quality, and reduce reactive power demand so that active power loss. The nodes with violated voltage-unbalance …
The influence of not applying any form of capacitive grading (capacitors completely removed from the model) produces a considerable divergence exceeding 300 kV in the fourth module (600–800 kV). Download : Download full-size image; Fig. 7. Deviation of voltage distribution from linear reference when implementing a fixed value of capacitive grading along …
As one of the main reactive power compensation methods, applications of the parallel compensation capacitor system are extensively observed in substations of different voltage grades. Capacitor switch of the system is the main component which affects the capacitor usability and reactive compensation performance. The operation status and ...
This novel de-icing method is based on characteristics of sinusoidal AC and theory of shunt capacitor over-compensation. By utilizing 10kV capacitor bank, which is installed as standard …
CONDIS'' Grading Capacitors can be found worldwide in most of the installed circuit breakers, when system requires them: Live tank circuit breaker. Dead tank circuit breaker. Gas insulated circuit breaker. General terms & conditions. …
Grading caps are found on breakers with more than one break, live tank/air blast breakers can have up to 10 breaks per phase (800kv) and have a grading capacitor for each breaks. The first picture shown above should …
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