蘇州某產業園區域交直流混合配電網控制方法研究
李斌1,金雪2,王輝2,姜彤1
(1 華北電力大學 電氣與電子工程學院,北京 102206;2 國網江蘇省電力有限公司蘇州供電分公司,江蘇 蘇州 215004)
摘 要:交直流混合配電網因其兼具交流配電網和直流配電網的優勢是未來的發展趨勢。介紹了蘇州某產業園區域交直流混合配電網結構與運行特點,結合產業園區域交直流混合配電網實際網架結構、運行原則以及運行方式等特點,給出了產業園區交直流混合配電網的協調控制方法,包括配電網正常運行、故障情況和離并網切換3種情況下的控制策略。提出的控制策略有利于提升供電能力,提高供電可靠性和電能質量,實現多點同期與離網靈活切換和實現快速故障隔離與自愈,具有極強的推廣性。
關鍵詞:交直流混合配電網;網架結構;控制方法;離并網切換
中圖分類號:TM727 文獻標識碼:A 文章編號:1007-3175(2018)11-0016-06
Research on Control Methods of AC/DC Hybrid Distribution Network in Suzhou Industrial Park
LI Bin1, JIN Xue2, WANG Hui2, JIANG Tong1
(1 School of Electrical & Electronic Engineering, North China Electric Power University, Beijing 102206, China;
2 State Grid Jiangsu Power Company Suzhou Power Supply Bureau, Suzhou 215004, China)
Abstract: AC / DC hybrid distribution network is a development trend in the future because it has advantages of both AC distribution network and DC distribution network. Introduction was made to the structure and operation characteristics of AC/DC hybrid distribution network in Suzhou industrial park.Combined with the actual grid structure, the operation principle and the operation mode etc features of AC/DC hybrid distribution network, the coordinated control methods of AC/DC hybrid distribution network in the industrial park were given under three conditions, including normal operation, failure condition and grid-connected/islanded transition.The proposed control strategy is beneficial to improve power supply capacity, to raise power supply reliability and to enhance power quality, which realizes multi-point synchronization and grid-connected/islanded flexible transition and achieves rapid fault isolation and self-healing, with very strong generalization performance.
Key words: AC/DC hybrid distribution network; grid structure; control method; grid-connected/islanded transition
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