基于D-S证据理论的成品油管道泄漏融合识别方法研究

STUDY ON FUSION DIAGNOSTIC METHOD FOR PRODUCTS PIPELINE LEAK BASED ON D-S EVIDENCE THEORY

成品油管道是石油、石化行业的关键输送设备之一,必须对意外发生的泄漏事故及时报警,并准确估计泄漏点位置。针对成品油干扰工况较多的特点,提出基于Dempster-Shafer证据理论的成品油管道泄漏融合识别方法,实现对泄漏过程和干扰工况的有效区分。实例分析表明,基于证据理论的多证据体融合后的基本可信度分配较融合前各单一证据的基本可信度分配具有较好的峰值性和可分性,提高泄漏诊断系统对干扰工况和泄漏的区分能力,降低误报警率。

Products pipelines are the key equipment in petroleum and chemical industry.It is very important to report the leakage event timely and leakage point precisely.Considering that the products pipeline has much operation modes,a leak detection method for products pipeline based on Dempster-Shafer evidence theory is presented to distinguish leakage from operation modes.Experimental results show that after the multi-evidence fusion transform,the better peak feature and the discriminative character is get.The res...