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The Challenge:
To design and develop an application responsible for monitoring and data logging of energy generated and consumed in combined cycle power station.
The Solution:
The system is implemented with a Stand Alone data logger using FP-2000 Controller and FP-CTR500 Counter
We selected LabVIEW RT and LabVIEW implement this demanding application. The intuitive graphical user interface (GUI), combined with the powerful graphical programming language, G, gave us a SCADA system capable of monitoring the generated power. The power monitoring SCADA system we developed with LabVIEW provides monitoring of generated power from remote computers in the plant having network connectivity and capable of generating reports. The periodic checking of the generated power generation of reports made easy and efficient to operate and maintain with the system provided. The Field point controller will act as a stand-alone system for data acquisition, which is operating in real time mode The remote monitoring, is possible with the remote systems running with SCADA system.
Introduction:
Combined cycle power project of NTPC located in Kayamkulam, Kerala, needed a data logging and monitoring system for the energy generated and the energy consumed and compare the generation and supply based on the availability based tariff (Generation requirement).
The Combined Cycle power plant is a combination of a fuel-fired turbine with a Heat Recovery Steam Generator (HRSG) and a steam powered turbine. These plants are very large, typically rated in the hundreds of mega-watts.
Depending on the power requirements at the time, the combined cycle plant may operate only the fired turbine and divert the exhaust. However, this is a substantial loss of efficiency. Large fired turbines are in the low 30% eff. range, while combined cycle plants can exceed 60% efficiency.
System Configurations:
The SCADA application made with LabVIEW, monitors energy generated in the plant. The System incorporates distributed, real-time controllers FP-2000 with FP-CTR-500 networked with Local Area Network through Ethernet protocol. We implemented the MMI/SCADA application on a PC-based system running LabVIEW on Windows .The system has enhanced security for interrupting the controller by changing user settable parameters.
The entire setup is working as two system one is a stand alone data logger, which will log the data on user specified intervals the other is a host application which will act as a interface between Stand alone controller and user.
Our challenge was to provide a SCADA system that would monitor, control the field point module archive the data to host computer. We developed this feature in LabVIEW to provide the operator with a hierarchy of user interface screen displays through which the user can easily navigate the system. We chose LabVIEW because of its reliability with windows environment and connectivity to existing LabVIEW device drivers. The data is logged in to the controller database on user specified logging interval. The generated power will be analysed at the end of a day with reports generated by the SCADA. There are three types of reports generated using SCADA application the generated power in megawatt hour, the reactive power and net generation and consumption. The report generated by SCADA system is send to Kerala State Electricity Board as the proof of generation. The Monitoring system is distributed and is possible to monitor generation status remotely, the remote application is running in Control room and maintenance Engineers Room
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