PGE/REWE 2015

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How the Operation Flexibility Need Affects Power Station Chemical Management? (Room G104, Auditorium Centre, First Floor)

To operate in a challenging market conditions, like smart grid or secondary regulation the power stations load and operation are not predictable. The operation of the plants are driven by market need. In the case of big power stations the load change speed is limited by many factors what can drive the profitability of the plant. The challenge is even bigger when water sources are limited and need to operate on a profitable way. In the natural gas fired units the flexibility is easier to achieve especially the CCGT stations designed to flexibility. The coal/biomass stations operational flexibility is a bigger challenge since in the past designed them as base load stations. In this paper the power stations flexibility driven water treatment challenges are reviewed through more real life case history. Through those cases introduced the importance of the accurate & automated water chemistry control is essential for the market driven operation! The paper considers the concept of Best Available Technologies (BAT) in the IPPC Directive, and cost effective application to power plant water systems. It addresses the impact of water system management flexibility charges on traditional measures of operational excellence, such as plant availability and heat rate, but also on Environmental Return On Investment (e-ROI).