Data analysis-based real-time monitoring system and method for primary frequency modulation capability of power grid

Abstract

The invention discloses a data analysis-based real-time monitoring system and method for the primary frequency modulation capability of a power grid. The method comprises the steps as follows: a signal collector module transmits collected real-time load values of units to first function setting modules, comparator modules and second function setting modules; output of each first function setting module is connected to a first input end of a first selector module; the output of each second function setting module is connected to the first input end of a second selector module; the output of each comparator module is connected to set terminals of the corresponding first selector module and second selector module separately; real-time primary frequency modulation upper limit values output by the first selector modules of all grid-connected frequency modulation units are summated; and real-time primary frequency modulation lower limit values output by the second selector modules of all grid-connected frequency modulation units are summated. Summary and analysis of the primary frequency modulation capability of each unit in various load intervals are achieved through a disturbance test; the primary frequency modulation conditions of the grid-connected frequency modulation units can be effectively monitored; and effective supervision and management are achieved.

Description

technical field [0001] The invention relates to the field of frequency regulation of thermal power units, in particular to a system and method for real-time monitoring of the primary frequency regulation capability of a power grid based on data analysis. Background technique [0002] Power system frequency is a very important parameter for the safe operation of the entire system, and an important indicator for monitoring power quality and safety conditions. Whether the system frequency is too high or too low, it will bring serious damage to the generator sets and equipment of the entire system. harm. The generator set participating in the frequency regulation of the power system is an auxiliary service, which directly affects the quality of the system frequency and plays an important role in the stable operation of the system. When unbalanced power is generated in the system, the frequency of the system will change, and the frequency exceeds the normal range allowed by the ...

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Problems solved by technology

[0004] At present, since the primary frequency regulation capability of grid-connected units cannot be effectively predicted and monitored, when large load fluctuations occur in the power grid, such as a large amount of power loss due to external DC blocking, the power grid dispatching department can only rely on the power gap Quickly cut off the corresponding line load. This method is likely to cause secondary accidents such as power outages for important loads and large-scale residential power outages, resulting in greater social impact. It is not only detrimental to normal production and operation, but also detrimental to the safety and stability of the power grid.

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