【摘要】：當電力系統(tǒng)遭受嚴重擾動后,主動解列策略是防止災(zāi)害性大停電事故積極而有效的手段,其核心內(nèi)容是搜索最優(yōu)解列斷面,通常理解為是一種含約束的組合優(yōu)化問題。提出了一種基于譜聚類的考慮柔性直流落點約束的最優(yōu)主動解列斷面搜索算法,該方法通過譜聚類算法將電力系統(tǒng)的最優(yōu)解列斷面搜索問題映射為圖的分割問題進行求解,直接求取最優(yōu)解且計算速度較快;以最小有功潮流沖擊為目標函數(shù),最小化解列后系統(tǒng)潮流的改變提高了孤島系統(tǒng)的暫態(tài)穩(wěn)定性;考慮了基于電壓源換流器的高壓直流輸電(VSC-HVDC)的終端落點作為約束條件,將VSC-HVDC的終端置于不同孤島內(nèi)可實現(xiàn)孤島間功率的交換,降低了系統(tǒng)整體恢復(fù)穩(wěn)定的成本。最后通過IEEE 10機39節(jié)點系統(tǒng)以及廈門系統(tǒng)實際算例的仿真驗證,證明了該方法的有效性和快速性。
[Abstract]:When the power system is seriously disturbed, the active decoupling strategy is an active and effective method to prevent the catastrophic blackout. The core of the strategy is to search the optimal disconnected section, which is generally understood as a constrained combinatorial optimization problem. In this paper, an optimal active de-listing section search algorithm based on spectral clustering is proposed, which considers the constraint of flexible DC landing point. By using spectral clustering algorithm, the optimal discontinuous cross-section search problem of power system is mapped to a graph segmentation problem. Taking the minimum active power flow as the objective function, the transient stability of the isolated island system can be improved by the change of the system power flow after the minimum solution. The terminal landing point of VSC-HVDC based on voltage source converter is considered as the constraint condition. The power exchange between isolated islands can be realized by placing the terminal of VSC-HVDC in different isolated islands, and the cost of restoring stability of the system as a whole is reduced. Finally, the effectiveness and rapidity of this method are proved by the simulation results of 39 bus system of IEEE 10 machine and Xiamen system.
【作者單位】： 東北電力大學電氣工程學院;
【基金】：國家電網(wǎng)公司科技發(fā)展項目資助(NEDU20150002)
【分類號】：TM712

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