【作者】 刘天野；

【导师】 张志杰； 任一峰；

【作者基本信息】 中北大学 ， 电子信息技术及仪器， 2014， 博士

【摘要】 矿用综合保护器（简称矿用综保）在使用中易失效，失去对电气设备、系统的保护功能，危害人身设备安全，在特定情况下能引起瓦斯、煤尘爆炸等严重危害矿井安全的事故。矿用综保在使用中定期进行功能测试（称为在用测试）能及时筛选出失效综保，杜绝此类情况发生，从而保证矿井生产安全。如何提高矿用综合保护器在用测试的准确性和测试过程的自动化程度，并提高测试系统自身的工作可靠性，影响矿用综合保护器在用测试工作的开展，具有重要意义。针对测试激励电源成为在用测试准确性和自动化程度提高的限制因素这一情况，采用直接波形合成技术研制了可程序控制的测试激励电源，提高了测试的准确性和测试过程自动化程度；针对综保测试扩展的需要，对测试系统硬件系统和软件系统进行了通用性、可扩展性研究，使得测试系统交付后能针对新型号综保进行测试功能扩展幵发；针对测试系统进行了可靠性分析，得出了提高测试系统自身可靠性的建议。论文首先分析了波形合成原理，设计了一套可程控输出的矿用综合保护器的测试激励电压源、电流源。激励电压源、电流源采用数字波形直接合成技术产生原始可控信号，进行高精度线性功率放大后作为综保测试激励电压、电流，实现了激励电压、电流的程控输出、高精度输出。其次，进行了系统硬件通用性研究和软件体系结构研究。硬件通用性研究中，首先在矿用综合保护器接口标准化程度提高的预期前提下，对矿用综保在用测试硬件资源需求进行了分析，得出了最少硬件资源需求。其次，对两种测试系统接口匹配方式一开关阵列方式和型号专用匹配电路方式——进行了对比分析，确定测试系统接u采用型号对应匹配电路方式。随后，设计了采用型号专用匹配电路接口方式的测试系统硬件系统。最后，以WZBH3GT型号综合保护器为例说明了型号专用接口匹配电路设计过程与方在测试系统软件体系结构研究中，首先分析了矿用综合保护器在用测试系统软件的需求特点，提出了满足通用性和可扩展性要求的矿用综保测试软件设计原则；在该设计原则基础上，进行了测试软件数据组织（数据结构）设计和测试软件功能（模块）设最后，对测试系统硬件部分进行了可靠性分析。本章在测试系统前代产品结构框图基础上建立了其可靠性模型，采用FMECA方法对该测试系统进行了可靠性分析，确定了各部件的故障模式、影响和危害度，找出了影响该测试系统可靠性的主要因素，并提出了改进设计、提高整个系统可靠性的建议。更多还原

【Abstract】 Mining comprehensive protector (referred to comprehensive protector) is easy to failwhen it is in use, it can lose the protection function to the electrical equipment and system,and this is dangerous for personal safety. In some special situation, it can cause gasexplosion, coal-dust explosion and some other accidents that endanger the mine. Theperiodic function test (called test in use) on mining comprehensive protection can screen outthe invalid comprehensive protector to avoid the accident and guarantee the safety of mineproduction. It is significant for carrying out of the in use test work to improve the veracity,the automatic degree of the test process and its work reliability of comprehensive protector inuse system. On account of the situation that the excitation power is the limited factor whichaffects the veracity and the improvement of the in use system, so the using of direct waveformsynthesis technology develops a program-controlled excitation power that improves theveracity and automatic degree of the test process. Aim at the demand for the extension ofthe comprehensive protector; the universality and expansibility of hardware system andsoftware system of the test system are studied. Then aim at the test system, the reliabilityanalysis has been done and work out a suggestion that improves the test system reliability.The following is the main ideas of the thesis:Fisrt，this thesis analyzed waveform synthesis principle and designed a system which canoutput program-controlled exciting voltage and current source that was used tocomprehensive protector test. By adopting waveform direct digital synthesis technology, theexciting voltage and current source can produce controllable original signal, and the power ofthe original signal is amplified by using high-precision linear technology, then it can be usedin comprehensive protector, which further realized the controllable output and high-precisionoutput of excitation voltage and current.Then,the thesis also conducted systematic studies on hardware. First, under the presupposition that the interface standardization of comprehensive protector has beenimproved as expected, the thesis analyzed hardware resource requirements of comprehensiveprotector test in use and ifnd that it own the least resource requirements. Secondly, bymaking a contrastive analysis to the interface matching modes of the two tests systems-switch array mode and model-speciifc matching circuit mode, the later mode was decidedbeing used to the test system. And then, the thesis took WZB-6GT model Protector asexample and illustrated the design process and design method of model-specific interfacematching circuit.What’s more, software parts were also systematically studied. Firstly, the sotfwarerequirements features of comprehensive protector test in use system were analyzed and thenthe author put forward the software design principles that need to be complied with to fulfillthe requirements of both universality and expandability. In addition, based on these principles,data organization (data structure) design and function (mode) design about the test sotfwarewere made in this study.At last,analyzing the reliability of the hardware system. In this chapter, on the base ofthe structure diagram of former generation system, a reliable model has been build.Adopting the method of FMECA does a reliable analysis to the test system and indentifies thefault mode, effect, and criticality of the assembly units. Find out the main factorsinfluencing the reliability of the test system, and puts forward reliable suggestions on theimprovement of design and the whole system.更多还原