In-situ reactive compensation device
A compensation device, three-phase sub-compensation technology, applied in reactive power compensation, reactive power adjustment/elimination/compensation, electrical components, etc., can solve the problems of contact sintering that cannot be separated, inconvenient for users to install on-site, contact sintering, etc. , to achieve the effect of eliminating the failure phenomenon that sintering cannot be separated, meeting the requirements of the length of the short connecting line, and meeting the requirements of the impedance value
Pending Publication Date: 2017-05-10
ZHEJIANG NANDA ELECTRICAL
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Problems solved by technology
[0003] However, the existing on-site reactive power compensation devices are usually large in size (greater than 0.5 cubic meters), which is not convenient for users to install on site
If the volume of the in-situ reactive power compensation device is reduced, it means that the connection copper wire of the capacitor loop in the device must be shortened. However, the contact sintering of the capacitor intelligent synchronous switch in the reactive power compensation device that saves the connection copper wire cannot be sintered during operation. Separate Symptoms
[0004] Therefore, the existing on-site reactive power compensation device, on the basis of ensuring a small volume, has the defect that the contacts of the capacitor intelligent synchronous switch are sintered and cannot be separated, so it cannot be safely and effectively installed and used on the load side
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[0045] The single discharger provided by the embodiment of the present invention may be composed of an inductor and a resistor connected in series with the inductor. In actual use, a plurality of dischargers can be used to form a combined discharger and a capacitor for use together. For example, three dischargers are potted with a plastic shell and epoxy resin to form a quick combined discharger matching the three-phase common compensation capacitor and the three-phase split compensation capacitor. In this way, by changing the parameters and dimensions of a single discharger, a combination discharger matching various three-phase capacitors with different specifications and capacities can be made, and the discharge time is shortened to within 1 second. The specific implementation is as follows:
[0046] As a possible implementation, the connection circuit between the discharger and the three-phase co-complementary capacitor is as follows: Figure 4 Shown: K1 and K2 are capaci...
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The invention discloses an in-situ reactive compensation device, comprising a cabinet, a capacitor and a plurality of groups of capacitance loops connected with the capacitor. The capacitor and the capacitance loops are uniformly arranged in the cabinet. The connection wires of the capacitance loops are inrush current suppressing resistors made of manganese copper alloy wires. According to the device, the capacitor and the capacitance loops connected with the capacitor are gathered in the cabinet, thereby reducing the size of the whole device. The inrush current suppressing resistors of the capacitance loops are made of the manganese copper alloy wires with high resistivity, connection long wires are replaced, the demand of small size installation for short connection wire length is satisfied, and the demand of impedance values and the demand for passing high capacitance current in the capacitance loops are satisfied. When the device is used, the impedance and sizes of the inrush current suppressing resistors are determined according to specific capacitance loop demands, a fault phenomenon that contactors of a capacitor smart synchronous switch are sintered and cannot be separated is removed, and the device can be installed and used safely and effectively in situ at a load side.
Description
technical field [0001] The invention relates to the technical field of power supply, in particular to an on-site reactive power compensation device. Background technique [0002] Usually, the design institute adopts a centralized reactive power compensation scheme when designing the user's power distribution room, because at this time the design institute only knows the transformer capacity requested by the user, but does not know how much load the user uses and the specific location where the load is used Therefore, it is impossible to design the reactive power compensation scheme in advance. The on-site reactive power compensation device requires a small space for the installation site and flexible installation. In fact, using the local reactive power compensation scheme on the load side can reduce line loss and compensate reactive power better than the centralized reactive power compensation scheme on the power supply side. [0003] However, the existing on-site reactiv...
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IPC IPC(8): H02J3/18H01G2/08
CPCH02J3/18H01G2/08Y02E40/30
Inventor 郑坚戴珏珺
Owner ZHEJIANG NANDA ELECTRICAL