Identification method of generator and condenser start-up process in the process of grid-connected power system

Abstract

The invention discloses a method for identifying the start-up process of a generator and a condenser during the grid-connected process of a power system, which comprehensively utilizes two states of normal and abnormal position contacts of the grid-connected circuit breaker during the start-up process, and when the position state of the grid-connected circuit breaker is normal, The position of the circuit breaker is used as the main criterion for grid-connected conditions. When the position of the circuit breaker is abnormal, voltage, frequency, current, electrical quantity, and other auxiliary contact information are used as the main criterion for grid-connected conditions, and various node information is used as the starting point. Machine identification conditions, high accuracy of start-up identification, significantly reducing the incidence of protection misoperation and fault refusal; support single-position and double-position grid-connected circuit breaker status access, applicable to various grid-connected circuit breakers The location access, wide application range, strong practicability.

Description

Technical field [0001] The present invention relates to a power generator and a chair starting process identification method in a power system in the network, belonging to the technical field of power systems. Background technique [0002] The generator / adjustment camera launtering is diverse, and there is a frequency of frequency of the starting process through the original motive, and there is a frequency of the starting process of the start-up process by the Static Frequency Converter, abbreviation SFC). . Taking the launching method of still inverter as an example, the startup process is divided into a stationary process, and the step-down process of the same period, the fastback process is quickly restarted. [0003] Generator / Monitor Camera launching process needs to develop specific protection, such as development starting differential protection, launch overcurrent protection, launching zero sequence overvoltage protection, error power protection, latching low pressur...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiencies in the prior art, provide a method for identifying the start-up process of the generator and the condenser during the grid-connected process of the power system, and solve the misjudgment caused by the judgment of the start-up process of the generator and the condenser in the prior art The rate is high, and there are technical problems such as protection malfunction and fault refusal

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