On-line monitoring method of excitation system based on real-time pmu data
A technology of excitation system and data, applied in the field of online monitoring of excitation system based on real-time PMU data, can solve the problems that the dynamic response characteristics of the excitation system cannot be fully reflected, and the preparatory work cannot be performed frequently, so as to achieve the effect of no special requirements.
Active Publication Date: 2016-01-06
STATE GRID CORP OF CHINA +2
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Problems solved by technology
At present, in order to analyze and evaluate the performance of the excitation system, and at the same time, in order to avoid interference with the normal operation of the power grid, the conventional test method is carried out through a separate offline test of the excitation system, which not only requires a lot of preparatory work but also cannot be done frequently Execution, and the specific limit requirements of the test method for the strength and action time of the disturbance signal used in the test also lead to some test results not fully reflecting the dynamic response characteristics of the excitation system in actual operation
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[0015] Such as figure 1 Shown, a kind of excitation system online monitoring method based on real-time PMU data, this method comprises the following steps:
[0016] (1) The data measurement unit collects the real-time data of the generator set and its excitation system, monitors the changes of its voltage / current and excitation voltage signal online, and detects the occurrence of generator set disturbance and excitation action in real time;
[0017] (2) When the generator set disturbance and excitation action are detected, analyze and calculate the dynamic / static behavior characteristics of the excitation system during the disturbance process in real time.
[0018] The detection of generator set disturbance and the occurrence of excitation action includes: 1) extracting generator terminal voltage / current data in real time, calculating and judging whether their variation within a given time satisfies the disturbance discrimination condition to determine that the unit is disturb...
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The invention relates to an excitation system on line monitoring method based on real time PMU data, which comprises the steps that 1, a data measuring unit acquires the real time data of a power generator unit and an excitation system thereof, monitors the changing condition of the voltage / current and excitation voltage signals on line and detects the occurrence of disturbance and excitation actions of the power generator unit in real time; and 2, the dynamic / static action characteristics of the excitation system in the disturbance process are analyzed and computed in real time under the condition of detecting the occurrence of the disturbance and the excitation actions of the power generator unit. Compared with the prior art, the excitation system on line monitoring method based on the real time PMU data has the advantages of convenience, simplicity, supporting on line operation, no limits of special requirements and the like.
Description
technical field [0001] The invention relates to an on-line monitoring method of an excitation system, in particular to an on-line monitoring method of an excitation system based on real-time PMU data. Background technique [0002] As an important control unit of a synchronous generator, the generator excitation system's dynamic performance has a direct impact on the stability and reliability of the generator and power system operation. At present, in order to analyze and evaluate the performance of the excitation system, and at the same time, in order to avoid interference with the normal operation of the power grid, the conventional test method is carried out through a separate offline test of the excitation system, which not only requires a lot of preparatory work but also cannot be done frequently Execution, and the specific limitation requirements of the test method for the strength and action time of the disturbance signal used in the test also lead to some test results...
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IPC IPC(8): G01R31/34
Inventor 崔勇郭强
Owner STATE GRID CORP OF CHINA