Double-door reactive power compensation cabinet provided with redundant power supply

Abstract

The invention provides a double-door reactive power compensation cabinet provided with a redundant power supply. A reactive power compensation controller is arranged for inside compensation, data acquired by a current transformer are analyzed and compared, a combination switch and a miniature circuit breaker are adjusted, a feedback loop is formed, and the surge protection efficiency of a reactive power compensation device is improved; the compensation precision of the reactive power compensation device and the capacity load increment are increased while the surge protection is adjusted; the power supply redundancy is added, so that a redundant power supply module can be adopted to replace a power supply module in case that the electricity of the power supply module is exhausted or the power supply module breaks down, the storage quantity of electric energy is larger, the safety coefficient is higher, and the cabinet is more applicable to outdoor long-term reactive power compensation. Structurally, a cabinet body and a top cover are movably assembled, and assembly components can be assembled through larger workpieces at upper parts in the assembly technology, so that the mounting efficiency is greatly improved; heat of components in the cabinet body can be dissipated effectively by the aid of heat dissipation holes, and the service life of the cabinet is prolonged.

Description

technical field [0001] The invention relates to the field of reactive power compensation, in particular to a double-door reactive power compensation cabinet with redundant power supplies. Background technique [0002] In reactive power compensation, the compensation accuracy reflects the efficiency of effective compensation. Low compensation accuracy will cause under-compensation or over-compensation, and a large amount of power will be consumed in this process, which will reduce the efficiency of effective compensation. When the load is relatively stable , its influence is particularly obvious; and can increase the capacity load. [0003] Reactive power compensation devices are usually used outdoors for reactive power compensation. In addition, the power consumption is large. Therefore, a reactive power compensation device with high protection efficiency and high compensation accuracy is urgently needed, and can realize reactive power compensation outdoors for a long time. ...

AI Technical Summary

Problems solved by technology

[0002] In reactive power compensation, the compensation accuracy reflects the efficiency of effective compensation. Low compensation accuracy will cause under-compensation or over-compensation, and a large amount of power will be consumed in this process, which will reduce the efficiency of effective compensation. When the load is relatively stable , its effect is particularly obvious; and can increase the capacity load

[0003] Reactive power compensation devices are usually used for reactive power compensation outdoors, coupled with large power consumption, so there is an urgent need for a reactive power compensation device with high protection efficiency and high compensation accuracy, and can achieve long-term outdoor reactive power compensation

[0004] Reactive power compensation devices in the prior art generally use surge protectors for surge protection to improve the safety of reactive power compensation devices, but their protection limits are small and cannot be applied to the needs of outdoor reactive power compensation

[0005] The existing reactive power compensation equipment cannot be completely disassembled on the cabinet, and mass production requires a lot of labor and low efficiency; the IP level and heat dissipation of the existing reactive power compensation equipment cannot be handled well, and the higher the IP level, the airtightness The higher the value is, the worse the heat dissipation effect will be. If you increase the heat dissipation fan, it will increase the investment cost and affect the overall size of the cabinet, which does not meet the installation conditions.

[0006] In reactive power compensation, the compensation accuracy reflects the efficiency of effective compensation. Low compensation accuracy will cause under-compensation or over-compensation, and a large amount of power will be consumed in this process, which will reduce the efficiency of effective compensation. When the load is relatively stable , its impact is particularly obvious; and it can increase the capacity load; reactive power compensation devices in the prior art generally use surge protectors for surge protection to improve the safety of reactive power compensation devices, but the protection limit is small

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