净水厂数字孪生模型构建方法研究与实践

Digital twin model construction method of water treatment plant

为解决净水厂数字孪生模型构建问题,基于数字孪生五维模型,结合净水厂全流程工艺要求提出全要素数字孪生模型构建方法。通过净水厂多层次多尺度数字孪生几何模型,对净水厂全要素及其关系进行数字化呈现;通过标识解析、数据采集、语义描述和有限状态机行为搭建净水厂数字孪生信息模型,实现物理世界与数字空间的虚实映射和数字化表达;通过“机理+智能”混合驱动搭建净水厂数字孪生决策模型,对净水厂的运行机理和规律进行刻画。基于所提理论和方法设计开发了数字孪生净水厂运维管控一体化平台,为构建净水厂数字孪生模型提供了参考。

To establish the digital twin model of water treatment plant,a digital twin model construction method was proposed based on five-dimension digital twin model with considering the whole water treatment process.In the proposed construction method,the multi-level digital twin geometric model was carried out to digitally present the whole elements of water treatment plant and their relationships.The digital twin information model was established with these technologies of device identifier resolution,data collection,semantic description and finite state machine,so as to ensure the mapping and digital representation between physical world and digital space.The digital twin decision-making model was built with mechanism and intelligent model-driven hybrid frame work to describe the operation mechanism and law in water treatment plant.The integrated platform was developed,which verified the effectiveness of the proposed method,and provided an effective reference for the realization of digital twin modeling of water treatment plant.