The Detection Of Pipe Leakage And Break Based On The SCADA System Water Supply Distribution System

Since long ago, the water leakage of distribution system is the most significant problem which affects the water department production and marketing difference. At the same time, it is the most essential way to enhance the distribution system operating efficiency by reducing the water leakage reaction time and controlling loss of water. Grounding on the knowledge of the leakage, several countries developed some leakage control ways and invented some instruments to find the leakage place one by one. For example, the methods to detect leakage which are used by the developed country such as Germany, England and so on are regular sounding, detection by leak noise correlator, waste metering, combined district and waste metering, active leakage control and so on.Firstly, by analyzing the abnormal hydraulic pressure changing in distribution system, the characteristic of hydraulic pressure is get. According to this, the pipe break characteristic is obtained about the distribution system. The estimation of distribution system is done in a high precision in this article by using the data which is carried back immediately from the pressure inspector. On the basis of this, the analysis and the research are done on the distribution system. And then the reasonable result about the pressure change capacity is obtained which will take place when a large outflow occurs in the distribution system. Being based upon the information carried back by pressure inspectors, to use the results which are get by a serial of continuous estimation about distribution, the analysis is done on change characteristic in the points of knot pressure, loss of pipe and so on. Then, the abruptly possible outflow will be guess out. At last, we can judge the place is a normal flow or break leakage by the characteristic in its history. In fact, the method has a high precision to judge the abrupt outflow. At the same time, it still has a reasonable precision on estimating the loss of the water in a area which includes the pressure inspector. It is also useful to enhance leakage control and reduceleakage percentage.Secondly, on the basis of summarizing research about former and me, software of distribution system is developed which will give the study a high efficiency. At the same time, AutoCAD is redeveloped for the research result. Its interface is like AutoCAD, so it is ease to study and be used.The study gives a new feasible way in leakage control and detection in water supply distribution system, and provides a useful tool for the next step of research.