提出了一种基于 Ｋｕｌｌｂａｃｋ信息测度的长输管线泄漏诊断方法．它通过对管线两个 端点附近的压力梯度所构成的时间序列进行分析，从而检测出泄漏，并在此基础上对泄 漏点进行定位．此法只需测量２个端点附近的４个压力信号，且计算量小．在实际中较 容易实现。用该方法在一条长１２０ｍ、内径１０ｍｍ的液体管线上进行了实验，当泄漏量 为０．５％时，定位误差为总管长的２％。结果表明．这是一种很有实用价值的诊断方法。 A diagnosis method of long-distance pipeline leakage based on Kullback information measure is proposed. It analyzes leaks by analyzing the time series of pressure gradients near the two endpoints of the pipeline and, based on this, locates the leak. This method only needs to measure 4 pressure signals near 2 endpoints, and the calculation is small. In fact easier to achieve. Using this method, experiments were carried out on a liquid line with a length of 120m and an inner diameter of 10mm. When the amount of leakage was 0.5%, the positioning error was 2% of the total pipe length. The results show. This is a very useful diagnostic method.