基于并行冗余协议的高可靠性过程总线通信研究

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摘要为确保采样测量值及跳闸命令在过程总线的无损传输, 采用双网并行冗余协议(PRP)构建高可靠性过程总线通信系统。分析了基于PRP协议的变压器差动保护过程总线构架及其运行机制。给出了基于采样值报文传输率的网络链路故障定位时间计算方法。根据分布式继电保护功能特征, 构建了4种典型保护结构及其可靠性框图, 考虑到冗余系统的最小割集相容事件问题, 采用最小割集直接不交化法计算量大, 引入了简化最小割集补偿算法求解系统可靠度, 分析、论证了基于PRP过程总线方案的高可靠性应用优势。

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	莫峻
	谭建成

关键词 ：冗余, PRP, 可靠性, 过程总线, 最小割集

Abstract：To guarantee the lossless transmission of sampled measured values and trip signals, a parallel redundancy protocol (PRP) is used to implement the high reliability process bus. The architecture and the running mechanism of PRP based transformer differential protection are analyzed. A transmission rate of sampled values based method used to calculate the time of fault location is proposed. According to the distributed relay protection logic function, four popular architectures of protection systems and their reliability block diagram are created. Considering the influence of joint events in minimal cuts which may involve very complicated calculations by using the direct disjoint form calculation method, a simplified compensation algorithms based on minimal cuts is adopted to calculate and analyze the system reliability. The calculation result indicates the high-reliability advantage of the application of PRP based process bus solution.

Key words： Redundancy PRP reliability process bus minimal cuts

收稿日期: 2010-04-23 出版日期: 2014-03-20

PACS:	TM764
	TM73

作者简介: 莫峻男, 1983年生, 博士研究生, 研究方向为数字化变电站技术、信息技术在电力系统中的应用。谭建成女, 1963年生, 教授, 博士生导师, 主要从事电力系统运行规划和继电保护以及基于IEC 61850的变电站自动化系统的研究。

引用本文:

莫峻, 谭建成. 基于并行冗余协议的高可靠性过程总线通信研究[J]. 电工技术学报, 2012, 27(4): 263-268. Mo Jun, Tan Jiancheng. Highly Reliable Process Bus Communication Parallel Based on Redundancy Protocol. Transactions of China Electrotechnical Society, 2012, 27(4): 263-268.

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http://dgjsxb.ces-transaction.com/CN/Y2012/V27/I4/263

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