基于V形曲線的定子電流限制改進方法
發(fā)布時間:2019-06-30 20:45
【摘要】:首先通過分析現(xiàn)有典型定子電流限制器動作對系統(tǒng)電壓穩(wěn)定的影響,指明其存在無法保護發(fā)電機主設備安全且加劇系統(tǒng)電壓崩潰的隱形缺陷。然后基于單機無窮大系統(tǒng)V形曲線特性分析,提出利用發(fā)電機機端功率因數(shù)角小于系統(tǒng)外功角識別發(fā)電機定子電流最小值點的判據,并給出改善定子電流限制涉網特性的控制方法及系統(tǒng)阻抗整定建議。最后,通過實際裝置的測試結果驗證了所提定子電流限制優(yōu)化方法的有效性。
[Abstract]:Firstly, the effect of the current limiter operation on the stability of the system voltage is analyzed, and it is indicated that it is an invisible defect that can not protect the main equipment of the generator and to increase the voltage collapse of the system. Then, based on the analysis of the V-shape curve of the single-machine infinite system, the criterion of using the power factor angle of the generator to identify the minimum point of the stator current of the generator is proposed, and the control method and the system impedance tuning suggestion for improving the stator current limiting network-related characteristic are given. Finally, the effectiveness of the proposed stator current limit optimization method is verified by the test result of the actual device.
【作者單位】: 華北電力科學研究院有限責任公司;國家電網機網協(xié)調運行仿真實驗室;南京國電南自美卓控制系統(tǒng)有限公司;
【基金】:國家電網指南項目“發(fā)電機勵磁調節(jié)器涉網性能仿真評估技術及功能規(guī)范研究”~~
【分類號】:TM31
本文編號:2508243
[Abstract]:Firstly, the effect of the current limiter operation on the stability of the system voltage is analyzed, and it is indicated that it is an invisible defect that can not protect the main equipment of the generator and to increase the voltage collapse of the system. Then, based on the analysis of the V-shape curve of the single-machine infinite system, the criterion of using the power factor angle of the generator to identify the minimum point of the stator current of the generator is proposed, and the control method and the system impedance tuning suggestion for improving the stator current limiting network-related characteristic are given. Finally, the effectiveness of the proposed stator current limit optimization method is verified by the test result of the actual device.
【作者單位】: 華北電力科學研究院有限責任公司;國家電網機網協(xié)調運行仿真實驗室;南京國電南自美卓控制系統(tǒng)有限公司;
【基金】:國家電網指南項目“發(fā)電機勵磁調節(jié)器涉網性能仿真評估技術及功能規(guī)范研究”~~
【分類號】:TM31
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