引用本文: | 赵丽莉,王梦璕,倪 明,等.安全稳定控制装置硬件系统可靠性分析[J].电力系统保护与控制,2016,44(13):67-73.[点击复制] |
ZHAO Lili,WANG Mengxun,NI Ming,et al.Analysis of hardware system’s reliability of security and stability control device[J].Power System Protection and Control,2016,44(13):67-73[点击复制] |
|
摘要: |
安全稳定控制装置的可靠性对电力系统的运行有着重要影响。以SCS-500E安全稳定控制装置为例,分析了安全稳定控制装置硬件系统的组成及内在配合关系。将故障树法与马尔可夫状态空间法相结合,建立了安全稳定控制装置硬件系统的故障树模型和马尔可夫状态空间模型,由此求得装置分别处于正常运行、隐性误动、隐性拒动和停运4个不同运行状态时的概率。并定义了安全稳定控制装置硬件系统的可用度、处于隐性故障状态的概率及因隐性故障发生停运的概率。最后以算例验证了所求结果符合实际情况,表明所用方法的准确性。 |
关键词: 安全稳定控制装置 硬件系统 隐性故障 故障树 马尔可夫 |
DOI:10.7667/PSPC151313 |
投稿时间:2015-07-29修订日期:2015-10-21 |
基金项目:国家电网公司科技项目“考虑通信信息系统风险的电网安全稳定防御关键技术研究” |
|
Analysis of hardware system’s reliability of security and stability control device |
ZHAO Lili,WANG Mengxun,NI Ming,LI Xueming |
(NARI Technology Co., Ltd., Nanjing 211106, China;Jiangxi Electric Power Design Institute, Nanchang 330096, China) |
Abstract: |
The reliability of security and stability control device is important to the operation of electric power grid. Taking SCS-500E which is one kind of security and stability control device for example, the components and their logical relationship in the hardware system of the device are analyzed. Based on the analysis, the fault tree model and the Markov state space model are built by fault tree method and Markov state space methodology. The paper believes that the device has 4 operation states which are normal operation, hidden mal-operation, hidden anti-operation, and outage. The probabilities of the 4 operation states are got by fault tree model and the Markov state space model. Other reliability indexes of the hardware system of the device which are availability, hidden failure probability, and probability of outage caused by hidden failure are also delimited. It is proved that the results worked by the method proposed in the paper are matched with the actual facts and the method is correct. |
Key words: security and stability control device hardware system hidden failure fault tree Markov |