A method for evaluating the safety adaptability of thermal power unit operation in the primary frequency regulation performance test

Abstract

The invention discloses a method for evaluating the safety adaptability of unit operation in the primary frequency regulation performance test of thermal power units, belonging to the field of automatic control of electric power systems. It includes three sub-assessment methods: unit steady-state characteristic assessment, unit dynamic characteristic assessment and unit low-frequency oscillation risk assessment. According to the WAMS data uploaded by the power plant through the PMU, through state comparison, model simulation, parameter identification, disturbance test simulation and other methods, it is ensured that the disturbance amplitude imposed by a frequency modulation performance test of the thermal power unit is limited within the safety boundary of the unit, so as to prevent the unit from Power oscillation, combustion instability, main machine vibration and other consequences occurred during the test, effectively ensuring the safety of power generation.

Description

technical field [0001] The invention relates to a method for evaluating the safety adaptability of unit operation in the primary frequency regulation performance test of thermal power units, belonging to the field of automatic control of electric power systems. Background technique [0002] In order to make the power grid dispatching more comprehensive and accurately grasp the current primary frequency regulation capability and model parameter accuracy information of the unified dispatching unit in real time, and improve the monitoring and evaluation of the power grid’s operation status and adjustment capability of thermal power units, more and more provinces have launched A test job for FM performance. However, since a frequency regulation test belongs to the disturbance test performed by power grid dispatching on the generator set, if the disturbance test is carried out rashly without knowing the operating environment, operating state, and operation safety risks of the uni...

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Problems solved by technology

[0008] The above-mentioned existing technologies aim at the primary frequency regulation performance index of the generator set, and comprehensively evaluate the primary frequency regulation performance of the generator set, but there is no assessment of the safety adaptability of the unit operation, and it cannot guarantee that the disturbance amplitude imposed by the primary frequency regulation performance test of the thermal power unit can be limited to the safety of the unit. Therefore, it is impossible to prevent the power oscillation, combustion instability, main machine vibration and other consequences of the unit during the test

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