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Voltage regulator of the reactive power compensation capacitor cabinet
Product description
The series voltage regulator of the reactive power compensation capacitor cabinet (hereinafter referred to as " series voltage regulator") is one of the power technologies that have been widely promoted in recent years. By utilizing the concentrated capacitance impedance formed by the capacitor banks connected in series on the line, the distribution inductance impedance on the circuit can be compensated. In this way, the following purposes can be fulfilled: the transmission capacity of the line can be inc reased, the quality of the distribution voltage can be improved, and the load distribution among the parallel lines in parallel can be improved. All these lead to one aim, that is, reduce the total loss.
Product model
Composition mechanism and working principle
10kV Series voltage regulators for reactive power compensation capacitor cabinet is mainly composed of the series compensation capacitor, the zinc oxide assembly, the fast discharge switch, the current limiting damper, the sampling PT and so on.
The main wiring diagram of the series voltage regulators for reactive power compensation capacitor cabinet
When the capacitor C is inserted into the transmission line, the impedance of the line is changed as follows:
Z=R+j(XL-XC)
XL: The line inductance, XL=WL
XC: The capacitance reactance which are connected in series; because the inductance and capacitance are reduced, the total impedance of the transmission line is reduced due to the connection of compensation capacitance. As the result, the voltage drop on the line is reduced, and the voltage drop from the series voltage regulators for reactive power compensation capacitor cabinet to the end of the line is improved.
4. Product characteristics
(1) The device adopts an integrated structure, which is simple and only need a small area to be occupied. The equipment is easy to install.
(2) Improve the voltage distribution in the lines of a radial distribution network, so that the voltage of each load point will be within the require range; the voltage flicker caused by the electric starts can be controlled.
(3) It can significantly improve the utilization rate of the transmission lines and reduce the network loss. It can promote the transmissions of long distance, large capacity and high efficiency .
(4) It can reduce the reactance in the transmission line, improve the stability of the system, and help to control the voltage drop in the transmission line.
(5) The equipment is especially suitable for a distribution line with starts and breakdowns in heavy loaded state as well as serious voltage fluctuation problems.
Table of main parameters
|
Description |
Specifications parameters |
|
Rated voltage |
10kV |
|
Rated frequency |
50Hz |
|
Energy of the zinc oxide group |
1.5MJ |
|
Power frequency withstand voltage |
42kV/min |
|
Lightning shock withstand voltage |
75kV |
|
Quick switch rated current |
630A |
|
Quick switch short circuit switching current |
25kA |
|
Fast switching closing time |
≤ 10ms |
|
Fast switching time |
≤ 5ms |
|
Fast switch closing out of synchronization |
≤ lms |
|
Short circuit current detection time |
< 3ms |
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