分析了当前母线保护设备在实际运行中存在的一些问题，提出了研究开发新的母线保护装置的意义，本文主要对理论分析、软件设计以及装置试验整个过程进行了阐述，并且成功的开发了一套母线保护装置。 论文通过研究母线保护技术要求，在分析国内外现有电流差动保护判据优缺点基础上，提出了一套新的母线差动保护综合判据，即采用复式比率制动差动保护与故障分量复式比率制动差动保护相结合，并使各判据分别配置不同的数据窗。通过ATP电力系统仿真软件分析说明了本判据的优越性，该综合保护判据打破了以往传统保护判据单一的局限性。分时段的差动保护综合判据以及快速TA断线识别是本文的两个主要特点。同时文中对母线的一些后备保护如：断路器失灵保护、母联充电保护等做了详细的说明和实现。此外，本论文对影响保护判据性能的TA饱和、TA断线等问题给出了行之有效的解决方案。 软件设计上根据各保护判据的功能将软件模块化，即根据故障发生的不同状态及故障发生后的不同时段投入相应的保护模块。差流数据处理模块和保护功能模块分开，不互相嵌套，各保护模块共享差流数据，使软件更为优化。为了满足母线保护的要求，采用DSP汇编语言进行编程，从而保证了软件的高效性。 最后，静模试验结果表明：基于母线差动保护综合判据而研制的保护装置，它能够根据母线的运行情况和故障状态的变化，实时改变动作判据，从而使其保护性能达到最优。

Analysis a number of problems in the operation of the current bus protection equipment, Proposed the significance to research and development new busbar protection devices. From theoretical research to software, as well as devices test made great work.. And the successful development of a bus protection devices。 Research papers by bus protection technical requirements,After analyzing the advantages and disadvantages of the domestic and alien current differential protection criterions, Propose a new set of comprehensive criteria bus differential protection.This criterion combines existing differential protection criterions and makes different criterions part work in different time after fault. Through the ATP power system simulation software analysis explains the advantages of this criterion, Criteria for the comprehensive protection of breaking the traditional protection of the limitations of a single criterion. Also, some of the bus as backup protection,such as: Breaker failure protection, Coupler protection done a detailed description and realize. In addition, the papers on the impact of performance criteria for the protection of the TA saturated, TA disconnected, and other issues are given effective solutions. Among them, the way using the voltage、operation mode adaptability and the choice of fault busbar are innovation in this paper. The software design is an important part in system important. Generally, software reliability includes protection principle accuracy, logical organization strictness, computational method accuracy and stability. Based on the engineering project, paper has carried on the design to DSP platform software as well as protection software, and has carried on the actual programming and debugs to realize the software function. Finally, the test result indicated that the adaptive busbar differential protection in this paper is one kind of quite ideal protection. It can real-time change protection criterion according to the change of busbar movement and fault station to enables its protection performance to achieve superiorly.