管网故障水力瞬变检测实验系统研发

Water distribution system simulation and fault detection platform by means of transient analysis

为克服传统管网故障检测系统模型校验误差较大及基于恒定流模型检测的不足,尝试基于瞬变流模型方法设计开发一种能够兼顾模拟泄漏孔、局部阻塞在内的管网实验平台系统,用于水力建模的校验测试和故障检测,并提出相应故障辨识方法。该平台包括常规供水水箱、简单管网、实验控制系统、变速泵、管网故障模拟装置、低强度瞬变流激发器等,以RSView组态软件为基础研发了管网故障水力检测实验平台的SCADA系统,实现水位、流量、压力和阀门激励动作等计算机自动控制以及实时监测和采集。其中新的可控式低强度瞬变流激发器可取代传统阀门,能够产生阀门关闭激发瞬变水击波的类似效果,克服了传统管道试验平台末端关阀造成的水锤压力波动过大和不易控制的缺点。该实验平台拓展了管网实验室故障控制模拟和检测的思路,为支撑和推广实用化的智慧供水管网及故障检测技术研究提供了手段。

To overcome the deficiency such as check error of the traditional model for fault detection and steady flow model itself,this paper tries to design and develop a Smart Water Distribution System(WDS)simulation and fault detection platform including leaks and blockage by means of transient analysis.Besides,the corresponding fault identification method is presented.The platform includes the conventional water supply tank,water distribution system,experimental control system,variable-speed pump,fault simulation device,low intensity transient exciter and so on.Based on the RSView configuration software,a Supervisory Control and Data Acquisition(SCADA)system for the WDS was developed and thus,the pressure and flow conditions in the WDS can be monitored.The newly controllable and low intensity transient exciter was developed and it can replace the traditional valve and produce the similar effect of transient fluctuation excited by the valve closure.The experimental platform expands the idea of control,simulation,fault detection and response determination for WDS in the laboratory,and provides a reference for supporting and popularizing the practical smart WDS and fault detection analysis.