Multi-port flexible interconnection and power mutual aid device

Through multi-port flexible interconnection and power mutual assistance devices, mutual assistance and seamless power transfer between AC and DC distribution networks are realized, solving the problems of unidirectional power supply in traditional low-voltage distribution network areas and the problem of new energy consumption, improving the stability and economic benefits of the power grid, and possessing power quality management functions.

CN122136878AInactive Publication Date: 2026-06-02SUZHOU AIKE BORUI POWER SUPPLY TECH
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Patent Information

Application Number
CN202610536694.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-04-22
Publication Date
2026-06-02
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

The traditional low-voltage distribution network's unidirectional power supply mode and the difficulty in integrating new energy sources lead to grid instability and low economic benefits. Furthermore, seamless power transfer is difficult, and existing solutions suffer from high investment, low economic efficiency, or significant power outages for users.

Method used

The device employs a multi-port flexible interconnection and power exchange system, including AC/DC power distribution section, STS module, TRAN isolation transformer and Converter main power unit, to achieve AC/DC power exchange and seamless power transfer. Through grid-connected, off-grid and grid-connected-off-grid switching modes, combined with bidirectional anti-parallel thyristors and main control unit, it realizes grid voltage detection and fast switching.

Benefits of technology

It realizes mutual support between AC and DC distribution networks, solves the problems of grid stability and new energy consumption, improves power supply reliability and economic benefits, avoids power outages during transformer maintenance, and has power quality management functions.

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Abstract

The invention discloses a multi-port flexible interconnection and power mutual aid device, which comprises an alternating current and direct current power distribution part, an STS module, a TRAN isolation transformer and a Converter main power unit, and is characterized in that the alternating current and direct current power distribution part comprises a QF1 alternating current side circuit breaker, a QF2 bypass circuit breaker, a QF3 uninterruptible power supply circuit breaker, an alternating current side lightning protection device, a QF4 direct current circuit breaker and a direct current side lightning protection device; the STS module is composed of a bidirectional anti-parallel thyristor, a heat dissipation assembly and a main control unit. And the Converter main power unit is formed by connecting a plurality of single-stage AC / DC (Alternating Current / Direct Current) bidirectional topologies in parallel. When two or more devices are interconnected, the problem that a power distribution area cannot cope with voltage sag and long-term low voltage can be effectively solved, and meanwhile alternating current and direct current mutual assistance and alternating current mutual assistance can be achieved, and energy utilization is maximized.
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