Automatic quasi-synchronization real-time power generator monitoring method and system

A technology of automatic quasi-synchronization and real-time monitoring, applied in real-time monitoring, generator automatic quasi-synchronization real-time monitoring system, generator automatic quasi-synchronization real-time monitoring field, can solve the problems of slow automatic adjustment process, insufficient precision, large phase error, etc. , to achieve the effect of no debugging, high precision and fast closing speed

Inactive Publication Date: 2013-01-02
南京保合太和电力科技有限公司
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0004] The phase error of the traditional manual synchronous operation is relatively large, and the accuracy of the traditional quasi-synchronous automatic grid-connected device based on analog circuits is not high enough, and the automatic adjustment process is slow. The device must be strictly debugged and regularly calibrated

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  • Automatic quasi-synchronization real-time power generator monitoring method and system
  • Automatic quasi-synchronization real-time power generator monitoring method and system

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Embodiment 1

[0039] The invention discloses a method for automatic quasi-synchronous real-time monitoring of generators. The method includes: converting the sine wave signals on both sides to be merged into digital signals, and then using a scientific method to calculate and process them through a processing unit, so as to accurately determine Closing output time.

[0040] The method also includes: sampling the frequency and voltage of the signals on both sides, and displaying it on the display after data processing; The amount of change in the frequency of the rear generator achieves proportional control.

[0041] see figure 1, the present invention also discloses an automatic quasi-synchronous real-time monitoring system for generators. The system includes: a processing unit, a signal input and conversion circuit, an indication and control output circuit, an anti-interference and power monitoring circuit; the signal input and conversion circuit , indication and control output circuit, ...

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Abstract

The invention discloses an automatic quasi-synchronization real-time power generator monitoring method and system. The system comprises a processing unit, a signal input and conversion circuit, an indication and control output circuit, and an interference-proof and power monitoring circuit, wherein the signal input and conversion circuit, the indication and control output circuit, and the interference-proof and power monitoring circuit are respectively connected with the processing unit; the signal input and conversion circuit is used for converting sinusoidal signals at both sides to be merged into digital signals; the processing unit performs calculation processing on the signals adopting a scientific method, thereby accurately determining a switch-on output moment; and the indication and control output circuit is used for sending the output signal to a power generator. The invention completely overcomes disadvantages of a simulation device; frequency difference and phase difference are calculated with high precision; and switch-on ahead time is determined with millisecond precision. Under the conditions that two-side pressure difference is qualified, frequency difference is qualified, and set leading time and breaker mechanical action time conform to each other, rapid shock-free switching on can be realized.

Description

technical field [0001] The invention belongs to the technical field of automatic control, and relates to a real-time monitoring method, in particular to an automatic quasi-synchronous real-time monitoring method for a generator; meanwhile, the invention also relates to an automatic quasi-synchronous real-time monitoring system for a generator. Background technique [0002] Quasi-synchronous paralleling is to add excitation to the generator that has not been put into the system, and adjust its voltage and frequency. When the outlet switch of the generator is closed, the circulating current in the stator circuit of the generator will be zero, so that the impact of current and electromagnetic torque will not be generated. This is the biggest advantage of quasi-contemporaneous juxtaposition. [0003] The quasi-synchronous paralleling of generators is a very important operation in the power system. When the generators are put into parallel operation in the system, it is often ac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/40
Inventor 晋兆安
Owner 南京保合太和电力科技有限公司
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