一种紧急事件优先插入的低延时高速传输策略  

A low-delay and high-speed transmission strategy for emergency priority insertion

作　　者：汪光森[1] 王凯旋 王康 WANG Guangsen;WANG Kaixuan;WANG Kang(National Key Laboratory of Electromagnetic Energy,Naval Univ.of Engineering,Wuhan 430033,China)

机构地区：[1]海军工程大学电磁能技术全国重点实验室,武汉430033

出　　处：《海军工程大学学报》2024年第5期9-14,105,共7页Journal of Naval University of Engineering

基　　金：国家自然科学基金资助项目(61902422)。

摘　　要：在电力电子系统中,某些特殊拓扑电路出现故障不能直接采取保护措施,必须上传故障信号至上层控制器并由其进行统一协调保护,避免引发二次故障,而功率器件可承受的短路故障时间很短,要求对故障等紧急事件的传输延时要小。因此,采用适当的低延时传输策略是确保及时响应和处理紧急信号的关键。为此,设计了一种紧急事件优先插入的低延时高速传输策略。首先,对电力电子装置输入输出信号进行分析,确定不同数据类型的优先级,其中紧急事件的优先级最高,在任何时刻均能优先插入链路中进行传输;然后,依据模块划分原则,采用硬件描述语言完成相关模块的编程;最后,经软件仿真验证及硬件测试,验证了紧急事件优先插入策略的正确性。研究结果表明:该策略能够有效降低紧急事件的传输延时,使系统快速对紧急事件做出响应,达到维护电力电子系统安全的目的。In power electronics systems,some special topological circuits can′t be directly protected when they fail,so it is necessary to upload fault signals to the upper controller for unified and coordinated protection,so as to avoid secondary faults.However,the short-circuit fault time that power devices can withstand requires a small transmission delay for emergencies such as faults.Therefore,employing an appropriate low-latency transmission strategy is crucial to ensure timely response and processing of urgent signals.To address this,a low-latency high-speed transmission strategy with prio-rity insertion for emergency events was designed.Firstly,the input and output signals of the power electronic device were analyzed to determine the priority of different data types,with the highest prio-rity assigned to emergency events,ensuring their insertion into the communication link for transmission at any time.Secondly,based on the module segmentation principle,relevant modules were programmed using verilog language.Finally,the correctness of emergency priority insertion strategy was verified by software simulation and hardware test.The results show that the strategy can effectively reduce the transmission delay of emergency events,enabling the system to respond quickly to urgent events,and achieve the goal of maintaining the safety of power electronics systems.

关 键 词：紧急事件 传输策略 优先插入 电力电子系统 

分 类 号：TN919[电子电信—通信与信息系统]