Balanced arc suppression coil-compensating system
A technology of arc suppression coil and compensation system, which is applied in the field of distribution network, can solve problems such as insufficient compensation of arc suppression coils, and achieve the effects of saving equipment costs, optimizing balance, and avoiding investment
Inactive Publication Date: 2011-07-13
STATE GRID ZHEJIANG NINGBO YINZHOU POWER SUPPLY LTD CO
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[0003] The purpose of the present invention is to provide a balanced arc suppression coil compensation system, which can easily solve the problem of insufficient arc suppression coil compensation caused by the continuous increase of system capacitive current, and can prevent local resonance overvoltage
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[0019] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0020] The balanced arc-suppression coil compensation system provided in the present invention installs automatic compensation arc-suppression coil equipment in the substation, which can ensure that its capacity is at least 50% of the system capacitive current, and the automatic compensation arc-suppression coil equipment located in the substa...
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The invention provides a balanced arc suppression coil-compensating system. The system comprises automatically-compensating arc suppression coil equipment positioned in a transformer substation and fixed arc suppression coil equipment positioned in a ring station. The automatically-compensating arc suppression coil equipment and the fixed arc suppression coil equipment compensate a capacitor current of the system together. The compensating current of the automatically-compensating arc suppression coil equipment can be adjusted and that of the fixed arc suppression coil equipment is fixed. The compensating current of the fixed arc suppression coil equipment is 50 to 60 percent of the capacitor current of the ring station to which the equipment belongs. According to the balanced arc suppression coil-compensating system provided by the invention, by combining collective compensation and distributed compensation, the problem of insufficient compensation of arc suppression coil due to the gradual increase of the capacitor current of the system is easily solved. Meanwhile, by the system, the balance between the fixed arc suppression coil equipment during the distributed compensation is optimized and overvoltage of local resonance is avoided.
Description
technical field [0001] The invention relates to the field of distribution networks, in particular to a balanced arc suppression coil compensation system. Background technique [0002] About 80% of distribution network faults are one-way grounding faults. In order to improve the reliability of power supply, most of the distribution network adopts the arc suppressing coil grounding method. With the extensive use of cables in recent years, the power supply system is increasingly facing the problem of insufficient compensation capacity of arc suppression coils. When the capacity of the arc-suppression coil installed in a substation can no longer meet the needs of the system capacitive current increase, the usual solution in the prior art is to replace the arc-suppression coil with a larger capacity, although this method can temporarily solve the arc-suppression coil Compensation for the problem of insufficient capacity, but the scalability is not good, when the capacity of the ...
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Inventor 张彦胡杰高颂九凌荣光李光军王伟何辅江
Owner STATE GRID ZHEJIANG NINGBO YINZHOU POWER SUPPLY LTD CO