A high-voltage cascade energy storage device cabin stage-to-stage towing test system and control method

By designing a cabin-level towing test system for high-voltage cascaded energy storage devices, and utilizing a closed-loop test circuit and a power cabin test control and protection platform, the circuit structure was simplified, and the control and protection system was directly reused. This solved the problems of complex circuits and incomplete verification of protection functions in traditional tests, and improved the accuracy of test data and the operational safety of the energy storage cabin.

CN122283442APending Publication Date: 2026-06-26西安西电电力电子有限公司
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Patent Information

Application Number
CN202610410876.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-03-31
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

Traditional high-voltage cascaded energy storage system module-level subsystem testing technologies suffer from incomplete coverage, complex loops, high dependence on auxiliary systems, and difficulty in balancing safety and efficiency, making it impossible to fully verify the coordinated response of module-level subsystems and the communication linkage of the control system.

Method used

A high-voltage cascaded energy storage device cabin-to-tow test system is designed. It forms a closed test loop through two cabin-level subsystems, Hall current sensors, connecting reactors, voltage measuring transformers, disconnecting switches with grounding switches, grid-connected circuit breakers, and a power cabin test control and protection platform. The loop structure is simplified, and the energy cycle of the cabin-level subsystems is utilized. The water cooling system is integrated and the control and protection system is directly reused to achieve stable control of the towing power and verification of fault scenarios.

Benefits of technology

It simplifies the test loop structure, reduces construction and maintenance costs, improves the accuracy and security of test data, comprehensively covers fault scenarios, improves the matching degree between test results and actual operating scenarios, and helps energy storage cabin products to iterate and optimize rapidly.

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Abstract

This invention relates to the field of high-voltage cascaded energy storage system technology, and discloses a module-level towing test system and control method for a high-voltage cascaded energy storage device. Two module-level subsystems, a Hall current sensor, a connecting reactor, a voltage measuring transformer, a single-phase disconnecting switch with grounding switch, and a grid-connected circuit breaker are connected in series to form a closed test loop. One end of each of the two module-level subsystems is connected to a water-cooling system to provide water cooling for the subsystems. The two ends of the power module test and control platform are communicatively connected to the two module-level subsystems, and the power module test and control platform is also connected to the Hall current sensor and the voltage measuring transformer for signal transmission. This invention solves the technical problems of complex module-level towing loops, incomplete protection function verification, and inability to fully verify the module-level control and protection system in traditional methods, thereby ensuring the functionality and performance of the high-voltage cascaded energy storage system.
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Citation Information

Patent Citations

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