突變量保護(hù)對風(fēng)電接入系統(tǒng)的適應(yīng)性分析
發(fā)布時間：2018-09-07 17:22
【摘要】：突變量保護(hù)在傳統(tǒng)電力系統(tǒng)中得到了廣泛應(yīng)用,其對風(fēng)電系統(tǒng)的適應(yīng)性值得深入研究。為此,對突變量保護(hù)的判據(jù)進(jìn)行分析,得出其最佳適應(yīng)條件,針對該適用條件結(jié)合建模仿真和現(xiàn)場故障錄波數(shù)據(jù)對風(fēng)電系統(tǒng)進(jìn)行故障特征分析,進(jìn)而研究突變量保護(hù)對風(fēng)電接入系統(tǒng)的適應(yīng)性。理論分析結(jié)果表明,背側(cè)系統(tǒng)正序阻抗穩(wěn)定或正負(fù)序阻抗基本相等是突變量保護(hù)的最佳應(yīng)用條件;在風(fēng)電系統(tǒng)發(fā)生故障時,風(fēng)場側(cè)等值電源的正負(fù)序阻抗不相等,且正序阻抗有較大波動,該特征將使風(fēng)電系統(tǒng)中的突變量保護(hù)元件工作于非最佳應(yīng)用條件,其保護(hù)性能大大降低。突變量保護(hù)應(yīng)用于風(fēng)電系統(tǒng)時應(yīng)選擇犧牲靈敏度的保守整定。
[Abstract]:Catastrophe protection has been widely used in traditional power systems, and its adaptability to wind power systems is worthy of further study. Therefore, the criterion of sudden change protection is analyzed, and the optimal adaptive condition is obtained. The fault characteristics of wind power system are analyzed by combining modeling, simulation and field fault recording data. Then the adaptability of sudden change protection to wind power access system is studied. The results of theoretical analysis show that the stability of the positive sequence impedance or the equivalent of the positive and negative sequence impedance of the back side system is the best application condition for the sudden change protection, and the positive and negative sequence impedance of the equivalent power supply at the wind field side is not equal when the wind power system fails. Moreover, the positive sequence impedance fluctuates greatly, which will make the sudden change protection element in wind power system work in the non-optimal application conditions, and its protection performance will be greatly reduced. When applying sudden change protection to wind power system, we should choose conservative setting of sacrificial sensitivity.
【作者單位】： 西安交通大學(xué)電氣工程學(xué)院;ABB(中國)有限公司研究中心;
【基金】：國家重點基礎(chǔ)研究發(fā)展計劃項目(973計劃)(2012CB215105)~~
【分類號】：TM773
[Abstract]:Catastrophe protection has been widely used in traditional power systems, and its adaptability to wind power systems is worthy of further study. Therefore, the criterion of sudden change protection is analyzed, and the optimal adaptive condition is obtained. The fault characteristics of wind power system are analyzed by combining modeling, simulation and field fault recording data. Then the adaptability of sudden change protection to wind power access system is studied. The results of theoretical analysis show that the stability of the positive sequence impedance or the equivalent of the positive and negative sequence impedance of the back side system is the best application condition for the sudden change protection, and the positive and negative sequence impedance of the equivalent power supply at the wind field side is not equal when the wind power system fails. Moreover, the positive sequence impedance fluctuates greatly, which will make the sudden change protection element in wind power system work in the non-optimal application conditions, and its protection performance will be greatly reduced. When applying sudden change protection to wind power system, we should choose conservative setting of sacrificial sensitivity.
【作者單位】： 西安交通大學(xué)電氣工程學(xué)院;ABB(中國)有限公司研究中心;
【基金】：國家重點基礎(chǔ)研究發(fā)展計劃項目(973計劃)(2012CB215105)~~
【分類號】：TM773
【參考文獻(xiàn)】
相關(guān)期刊論文 前10條
1 王曉波;嚴(yán)干貴;鄭太一;范國英;王建勛;郭雷;董存;崔運海;周志強(qiáng);;雙饋感應(yīng)風(fēng)電機(jī)組聯(lián)網(wǎng)運行仿真及實證分析[J];電力系統(tǒng)自動化;2008年07期
2 索南加樂;康小寧;宋國兵;焦在濱;，
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