直流潮流計算下的孤島處理模型
連宏匯，潘歡
（寧夏大學(xué) 物理與電子電氣工程學(xué)院，寧夏 銀川 750021）
摘 要：在計及潮流特性的電網(wǎng)連鎖故障研究中，針對孤島處理環(huán)節(jié)，建立直流潮流計算下的孤島處理模型。當(dāng)電網(wǎng)發(fā)生故障而造成分割，應(yīng)用連通分量法判別各個孤島；針對每個孤島，以功率平衡為目的，進行發(fā)電站和負(fù)荷調(diào)節(jié)；為了避免潮流計算時出現(xiàn)奇異矩陣，增加新的類型點；使用Matpower在IEEE30節(jié)點和新英格蘭39節(jié)點電力系統(tǒng)上進行模擬仿真，結(jié)果顯示經(jīng)過孤島處理后，電網(wǎng)直流潮流計算收斂，證實該孤島處理模型的有效性。
關(guān)鍵詞：電網(wǎng)；孤島；潮流計算；Matpower軟件
中圖分類號：TM711 文獻標(biāo)識碼：A 文章編號：1007-3175(2018)12-0008-04
Island Processing Model Based on Direct Current Power Flow Calculation
LIAN Hong-hui, PAN Huan
（School of Physics and Electronic-Electrical Engineering, Ningxia University, Yinchuan 750021, China）
Abstract: In the research of cascading failures considering power flow characteristics, aiming at the island processing link, this paper established the island processing model based on the direct current (DC) power flow calculation. When the power grid was divided due to failure, the connected component method was used to distinguish the islands; power balance was used to adjust the power generation and load for each island; in order to avoid singular matrix in power flow calculation, new type points were added; Matpower was used to simulate the IEEE 30-bus system and the new England 39-bus system. The results show that the DC power flow calculation of the power grid is convergent after the islanding process, which verifies the validity of this island processing model.
Key words: power grid; island; power flow calculation; Matpower
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