Capacitor series connection compensation device and protection device thereof

Abstract

The invention provides a capacitor series connection compensation device and a protection device thereof and belongs to the technical field of capacitor compensation. The technical problems that in the prior art, the device maintenance cost is high, the electric energy loss of circuit running is large, and the device stability and reliability are poor are solved. The capacitor series connection compensation device comprises an upright capacitor, a switching operation mechanism and the protection device, wherein the upright capacitor is connected with a power transmission line through the switching operation mechanism. The protection device of the capacitor series connection compensation device is used for protecting the upright capacitor in the capacitor series connection compensation device. The protection device comprises MOVs, a damping reactor, a high-speed switch and by-pass switches, wherein the MOVs are connected to the two ends of the upright capacitor in parallel, the damping reactor and the high-speed switch are connected in series and then connected to the two ends of the upright capacitor in parallel, and the by-pass switches are connected to the two ends of the quick switch in parallel. The capacitor series connection compensation device and the protection device thereof are applied to improve the voltage and power factors of a power transmission line.

Description

technical field [0001] The invention relates to the technical field of capacitor compensation, in particular to a capacitor series compensation device and protection equipment thereof. Background technique [0002] At present, my country's 10kV and 6kV distribution networks are huge in scale and complex in load conditions, so their operation and power quality are more important. Voltage quality is an important indicator of power quality. From the perspective of engineering practicality, voltage quality refers to the deviation between the actual voltage and the ideal voltage, which reflects whether the electric energy provided by the power supply department to the user is qualified. Moreover, with the sharp increase of electricity consumption, the problem of power quality, especially the voltage quality, is becoming more and more serious, which seriously restricts the development of industry and agriculture. [0003] Capacitor compensation devices are often used to adjust t...

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Problems solved by technology

[0004] In the process of realizing the present invention, the inventor found that there are at least the following problems in the prior art: the performance of the protection equipment of the capacitance compensation device in the prior art is low, and the capacitor cannot be well protected when the transmission line fails, and the protection equipment is not The service life is low, which increases the depreciation amount and maintenance cost of the protection equipment, and easily reduces the performance of the capacitor, thereby potentially affecting the stability of the transmission line

Therefore, the prior art has the technical problems of high equipment maintenance cost, large power loss in line operation, and poor equipment stability and reliability.

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