An intelligent cabinet type reactive power compensation device

Abstract

The invention provides an intelligent cabinet type reactive power compensation device which comprises a control cabinet and a compensation cabinet I, wherein the control cabinet comprises a cabinet body, an instrument panel, a display instrument, an indicator light, an operating button, an isolation switch operating handle and an electromagnetic lock I; the cabinet body comprises a secondary control room I, a secondary wiring groove, an intelligent controller, a high-voltage circuit breaker, an isolating switch and a high-voltage presence indication device; the compensation cabinet comprises a cabinet body II, a wall bushing, a temperature and humidity controller, a digital ammeter, a flow conveying fan, an electromagnetic lock II and a shutter; and the cabinet body II comprises a surveillance camera, a secondary control room II, a vacuum contactor, a lightning arrester, a current transformer, a discharge coil, a capacitor, an insulator and an electric reactor. According to the device, the reliability is higher, the corrosion resistance is better, the temperature inside the device can be detected in real time, and the operating condition of the device can be monitored remotely; the structure of the device adopts a fully closed structure, and the IP protection grade of the device is improved; and modular arrangement is adopted, standardization, serialization and modularization are achieved, and a user can expand the capacity conveniently.

Description

technical field [0001] The invention relates to reactive power compensation of power distribution network, in particular to an intelligent cabinet type reactive power compensation device. Background technique [0002] The traditional cabinet-type reactive power compensation device adopts a cabinet made of cold-rolled plate, and installs parallel capacitors, fuses, and reactors in series in the cabinet (some even have no series reactor), and installs it directly on the secondary side of the transformer. loads in parallel. [0003] Traditional reactive power compensation devices have the following disadvantages: [0004] 1. The traditional cabinet-type reactive power compensation device, the cabinet shell is made of cold-rolled steel plate, sprayed with plastic, and the anti-corrosion performance is not high. In places with high levels of humidity and pollution, the plastic sprayed layer of the wires often falls off after a short service life, and the shell is rusted, which ...

AI Technical Summary

Problems solved by technology

[0004] 1. Traditional cabinet-type reactive power compensation device, the cabinet shell is made of cold-rolled steel plate, sprayed with plastic, and the anti-corrosion performance is not high

In places with high levels of humidity and pollution, the sprayed layer often falls off after the service life is not long, and the shell is rusted, which seriously affects the service life of the product.

[0005] 2. The protection of the traditional cabinet-type reactive power compensation device is not perfect, and the reliability is poor. The traditional cabinet-type automatic switching high-voltage reactive power compensation device only has over-current, over-voltage, under-voltage, and open triangle protection, and the quick-break protection depends on the upper switch. Protection, there is no quick-break protection and harmonic protection inside the device, so the protection reliability is not high

[0006] 3. The traditional cabinet-type reactive power compensation device has poor serialization and standardization capabilities in the industry, and the structure of the device is also arranged in different ways due to different capacities

Difficult to form standardized serialization

[0007] 4. The traditional cabinet-type reactive power compensation device lacks intelligence, has no relevant communication and monitoring interfaces, and cannot realize the intelligent requirements of "four remotes"

[0008] 5. For the traditional cabinet-type reactive power compensation device, the busbar connection form between single groups is connected by the insulator hanging busbar. The cabinet-type sealing is poor, so that the IP protection level of the traditional cabinet-type reactive power compensation device is not high.

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