| 引用本文: | 刘科学,宣文华,魏少鹏,等.一种基于高级Petri网的微电网故障诊断方法[J].电力系统保护与控制,2016,44(15):106-111.[点击复制] |
| LIU Kexue,XUAN Wenhua,WEI Shaopeng,et al.A method of micro grid fault diagnosis based on high-level Petri net[J].Power System Protection and Control,2016,44(15):106-111[点击复制] |
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| 摘要: |
| 微电网拓扑结构灵活，运行方式多样，是一个相对自治系统。针对微电网拓扑结构多变导致故障诊断建模困难问题，提出基于微电网线路故障保护信息的分层Petri网分析模型。该模型以分层保护集形式处理微电网保护信息。当微电网拓扑结构改变时，只需更新相应的保护集信息，不需要重新建模，对微电网的灵活多变有较强的适应性。该模型还可以有效判别保护和断路器的拒动、误动和处理含有时序关系的保护信息。为增强诊断系统的容错性和可靠性，采用智能加权模糊Petri网理论自适应调整权值。仿真算例验证了方法的有效性。 |
| 关键词: 微电网 故障诊断 Petri网 BCC算法 |
| DOI：10.7667/PSPC151433 |
| 投稿时间：2015-08-14 |
| 基金项目: |
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| A method of micro grid fault diagnosis based on high-level Petri net |
| LIU Kexue,XUAN Wenhua,WEI Shaopeng,TIAN Leilei |
(Qinhuangdao Power Supply Company, State Grid Jibei Electric Power Company Limited, Qinhuangdao 066000, China
;XJ Group Corporation, Xuchang 461000, China;School of Electrical Engineering,
Yanshan University, Qinhuangdao 066004, China) |
| Abstract: |
| The micro-grid is a relatively autonomous system with flexible topology and diverse operation mode. In order to solve the fault diagnosis problem resulted from the varied topology of micro-grid, this paper proposes a hierarchical Petri net diagnosis model. The micro-grid protection information is described with hierarchical protection set. And when the micro-grid topology changes, only the corresponding information of the protection sets need updating, instead of changing the whole model, so as to improve the adaptability to the flexible topology of micro-grid. The diagnosis model can effectively distinguish the misoperation of protection and circuit breaker, and deal with the sequential data come from the protection. In order to enhance fault tolerance of the diagnosis system, this paper uses intelligent weighted fuzzy Petri net and adaptive cumulative value to improve the accuracy of fault diagnosis. The effectiveness of the proposed method is verified by simulation example. |
| Key words: micro-grid fault diagnosis Petri net BCC algorithm |
