Three-phase low-voltage line voltage-regulating system

Abstract

The invention discloses a three-phase low-voltage line voltage-regulating system. The system comprises a three-phase low-voltage line voltage-regulator. The system is characterized in that the three-phase low-voltage line voltage-regulator comprises a molded case circuit breaker, a three-phase voltage-regulating controller, current transformers, AC contactors, a three-phase isolation transformer, AC voltage stabilization modules, a combination switch and a self-healing electric capacitor, wherein the molded case circuit breaker is connected to the current transformers, the current transformers are connected to the three-phase voltage-regulating controller, the AC contactors are connected to the three-phase voltage-regulating controller, the three-phase isolation transformer is connected to the AC contactors, the AC voltage stabilization modules are connected to the three-phase isolation transformer and obtain voltages from the three-phase isolation transformer, the AC contactors are connected to the AC voltage stabilization modules and the AC voltage stabilization modules provide working voltages, the self-healing electric capacitor is connected to the combination switch, and the three-phase voltage-regulating controller will emit instructions to automatically regulate opening and closing of the AC contactors to change the access mode of a three-phase isolation transformer winding so that a secondary side of the three-phase isolation transformer outputs qualified voltages.

Description

technical field [0001] The invention relates to a low-voltage voltage regulating system, in particular to a three-phase low-voltage line voltage regulating system. Background technique [0002] The 0.4kV station area line in the rural distribution network is at the end of the power system in the medium and low voltage distribution network. In the early stage of the power distribution system, the planning of the station area line was chaotic and the load distribution was uneven, which caused low voltage problems in the low voltage station area line. Secondly, with the development of the economy, a large number of rural users have begun to use inductive equipment such as air conditioners and induction cookers, resulting in serious reactive power loss, increasing the instability of rural electricity consumption, and unable to meet the electricity consumption of normal residents. Therefore, improving the voltage of end users and ensuring the qualified power supply voltage of use...

AI Technical Summary

Problems solved by technology

It can not only effectively solve the problem of terminal low voltage caused by too long power supply radius in the station area, but also solve the problem of voltage fluctuation caused by peak and valley periods and seasonal power consumption.

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