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

A technology for thermal power units and safe operation, applied in data processing applications, instruments, calculations, etc., can solve the problems of evaluation, lack of unit safety adaptability, inability to prevent power oscillation, combustion instability and large machine vibration, etc., to prevent power oscillation. , the effect of ensuring the safety of power generation

Active Publication Date: 2021-08-24
STATE GRID HENAN ELECTRIC POWER ELECTRIC POWER SCI RES INST +3
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  • Application Information

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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

Method used

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

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Embodiment 1

[0030] Such as figure 1 As shown, in a certain period of time, the coal type of the power plant will not change too much. Therefore, the unit performance can refer to the unit performance table under different working conditions corresponding to the design coal type and the check coal type, and compare the actual system output curve, so as to compare and analyze the theoretical state and actual operating state of the main equipment of the unit system the degree of deviation;

[0031]Each sub-system, such as wind and smoke, water supply, main steam temperature, fuel combustion, main container water level, main machine body, etc., can establish a mathematical model respectively, and verify the accuracy of the relevant model parameters of the speed control system of the unit according to the input and output data; After obtaining more accurate model parameters, the output of each subsystem under different working conditions can be simulated, and then compared with the actual out...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q10/06G06Q50/06
CPCG06Q10/0635G06Q50/06
Inventor 李炳楠朱峰崔杨赵钰婷张广涛梁正玉郭为民唐耀华段松涛
Owner STATE GRID HENAN ELECTRIC POWER ELECTRIC POWER SCI RES INST
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