Ecava IGX Validates for Fairview Gas Metering System
How It Started
In the oil and gas industry, it is not news that flow metering validation systems are essential in order to reach the revenue billing stage. The Fairview project in Brisbane, Australia was initiated in year 2014 by Santos to comprise of gas metering skid (which was formed by flow meters, valves, transmitters, Gas Chromatograph (GC), Moisture Analyzer, etc. ), flow computers, and SCADA supervisory system. The project integration is handled by Krohne Oil & Gas (KOG), in which they have approached Ecava to furnish the SCADA supervisory system by using Ecava IGX. The metering skid instruments will send the observation data from field to flow computers and Ecava IGX SCADA. These field data shall be flow rates, temperature and pressure measurements, valves status, and GC composition data.
在石油和天然气工业中，为了达到收入结算阶段，流量计量验证系统是必不可少的，这已经不是什么新闻了。2014年，澳大利亚布里斯班的锦绣项目由桑托斯公司发起，由气体计量器装置(由流量计、阀门、变送器、气相色谱仪(GC)、水分分析仪等组成)、流量计算机和SCADA监控系统组成。项目集成由Krohne石油和天然气公司(KOG)负责，在该系统中，他们与Ecava接触，使用Ecava IGX提供的SCADA监控系统。该计量器将观测数据从现场传送到流量计算机和Ecava IGX SCADA。这些现场数据应该是流量、温度和压力测量、阀门状态和GC组成数据。
Ecava IGX Can Do All the Magic in a Flick
The magical moment of this project is, the metering skid may seem so huge, but yet the configuration required in Ecava IGX is so simple and minor, that one could hardly believe it actually supported the entire system. Ecava IGX is required to integrate and communicate with flow computers supplied by ABB Group via Modbus TCP/IP protocol. The integration involves the observation for flow rates, totalization, transmitter values, valves status, gas composition values, flow meter diagnostics, etc. All these data will be used in mimic design for the overview screen, in which operators can monitor the metering system in a glance.
这个项目的神奇时刻是，计量器可能看起来如此庞大，但是Ecava IGX所需的配置是如此简单和微不足道，以至于人们几乎无法相信它实际上支持了整个系统。Ecava IGX需要通过ModbusTCP/IP协议与ABB集团提供的流计算机进行集成和通信。集成包括对流量、整体化、变送器值、阀门状态、气体成分值、流量计诊断等的观测。所有这些数据都将用于模拟屏幕的设计，操作人员可以在该设计中一目了然地监视计量系统。
Fairview gas metering skid in post assembly stage
The analyzer shelter for Fairview gas metering system (which consists of Gas Chromatograph, Moisture Analyzer, Flow Computer, etc.)
Flow rate totalization will be designed in separate page of SCADA mimic also, these totalizer values will be polled from flow computers which performed the calculation. Gas Totals screen is designed to shows totalizers of Run 1 and Run 2 for previous day, current day and eternal. Each of the 3 sets (6 sets in both run) has totalization for forward and reverse flow, while maintenance flow is only available for eternal totalizer.
Other than that, there are different challenges such as sampling operation and metering validation. Operators are required to login to the authorized role level in order to proceed for the metering validation operation. In order to perform validation, several interlocks are implemented based on project requirements, such as valves alignment and active alarm clearance. During validation, error percentage will be calculated between duty and master meter, which will be generated into report later.
Similarly with other SCADA projects, data will be logged into databases and presented as graphical trends as well as scheduled reports. There is a special requests to customize the reports into particular templates in order to meet the customer’s standard, as well as automated generation of PDF reports in the server hard disk.
SCADA Mimics Screenshot
Fairview Gas metering system overview mimic
Fairview Gas metering system totalization screen
Fairview Gas metering validation screen
The Hardware / Software:
Server Machine: Pepperl+Fuchs VisuNet XT PC9715
OS: Windows 7 Ultimate
Device: ABB Flow Computer
Protocol: Modbus TCP/IP
SCADA: Ecava IGX
IO tags: Supported for unlimited (300 in-used)
Database: Microsoft SQL Server Database