基于節(jié)點電氣耦合連接度的配電網(wǎng)啟發(fā)式孤島劃分
何樺1,李軍2,沈亞楠2,陳凡2,呂干云2,張小蓮2
(1 南京南瑞繼保電氣有限公司,江蘇 南京 211102;2 南京工程學(xué)院 電力工程學(xué)院,江蘇 南京 211167)
摘 要:分布式電源(DG) 供電能力和周圍負荷需求需要進行功率匹配,以保證故障后孤島劃分區(qū)域供電的穩(wěn)定性和良好的電能質(zhì)量。通過采集配電網(wǎng)中的量測終端數(shù)據(jù),在研究基于單元融合法的配電網(wǎng)孤島劃分的基礎(chǔ)上,提出利用節(jié)點電氣耦合連接度指標篩選重要負荷節(jié)點,使得關(guān)鍵負荷單元能夠得到優(yōu)先融合,在較短的時間內(nèi),制定出孤島劃分的最優(yōu)方案。仿真數(shù)據(jù)表明計及節(jié)點電氣耦合連接度的配電網(wǎng)孤島劃分算法能夠較為有效地融合配電網(wǎng)中一些關(guān)鍵節(jié)點,使配電網(wǎng)故障后,能夠借助分布式電源的供電能力為非故障區(qū)域的負荷提供持續(xù)的供電服務(wù)。
關(guān)鍵詞:配電網(wǎng);單元融合法;節(jié)點電氣耦合連接度;分布式電源
中圖分類號:TM715 文獻標識碼:A 文章編號:1007-3175(2017)10-0007-05
Heuristic Method Island Partition of Distribution Network Based on Node Electrical Coupling Connectivity
HE Hua1, LI Jun2, SHEN Ya-nan2, CHEN Fan2, LV Gan-yun2, ZHANG Xiao-lian2
(1 Nari-Relays Electric Co., Ltd, Nanjing 2111 02, China;
2 School of Electric Power Engineering, Nanjing Institute of Technology, Nanjing 21116 7, China)
Abstract: The power supply capacity of distributed generation has to carry out power matching with the periphery load requirements to ensure the stability of power supply in island partition and the good power quality after faults. Via the acquisition of the measurement terminal data in distribution network and on the basis of research on the island partition of distribution network of units merging algorithm, this paper proposed to carry out the important load nodes index selection with the consideration of node electrical coupling connectivity to make the key load units get priority merging, so as to obtain the optimal island partition scheme in a relatively short period of time. The simulation data shows that the island partition algorithm in distribution network based on node electrical coupling connectivity could effectively merge some key nodes in distribution network, which could provide continuous power supply services for the loads in non-fault regions with the help of distributed generation after the power system failures.
Key words: distribution network; units merging algorithm; node electrical coupling connectivity; distributed generation
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