Analysis and optimization test for 660MW supercritical unit under slidingpressure operation

Abstract

Abstract:

With the continuous improvement of economic level and living standard, the demand for electricity is gradually rising, and the total load of power grid is increasing, which increases the disparity between peak loads and valley loads. The demand for peak load regulating is more urgent. At present, the effective operation mode of steam turbine under low load is slidingpressure operation, which is more economic and more coalsaving. It is of great significance to study the lowload operation mode of steam turbines in order to reduce the energy consumption. Through slidingpressure test, the initial load point of slidingpressure operation and the initial pressure of constantpressure operation are determined. The relationship between the load and the main steam pressure in front of the engine is given to guide the economic operation of the unit.

Key words:

660 MW, supercritical unit, slidingpressure operation, constantpressure operation, operation optimization, optimization tests, heat consumption rate of unit, cycle thermal efficiency

CHEN Shuilin1，ZHANG Xiaolei2，WU Shun1.

Analysis and optimization test for 660MW supercritical unit under slidingpressure operation

[J]. Huadian Technology, 2019, 41(4): 6-9.

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Analysis and optimization test for 660MW supercritical unit under slidingpressure operation

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